Titanium Dioxide Patents (Class 423/610)
  • Patent number: 10480047
    Abstract: A process operating at super-atmospheric pressure for leaching a titanium containing ore with an HCl and producing titanium dioxide with integrated steps of solvent extraction for removing iron from the leached ore and solvent extraction of a resulting titanium enriched raffinate to produce particles suitable for finishing into pigment grade TiO2. The process can integrate the recovery of HCl from both solvent recovery steps and the recovery of solvent. The process also produces commercial grade ferric chloride.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: November 19, 2019
    Assignee: ARGEX TITANIUM INC.
    Inventors: Eric Larochelle, Carroll Moore, Tommee Larochelle, Richard A. Sixberry, Oumar Bashir, Steeve Lafontaine
  • Patent number: 10456776
    Abstract: The method of fabricating a photocatalyst for water splitting includes electrospinning a Zn-based solution mixed with CdS nanoparticles and then calcining to produce CdS nanoparticle decorated ZnO nanofibers having significant photocatalytic activity for water splitting reactions. The photocatalyst fabricated according to the method can produce H2 at a rate of 820 ?molh?1g?1 catalyst from aqueous solution under light irradiation.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: October 29, 2019
    Assignee: King Saud University
    Inventors: Abdullah M. Al-Enizi, Tansir Ahamad, Ayman Yousef
  • Patent number: 10449530
    Abstract: Photocatalysts for reduction of carbon dioxide and water are provided that can be tuned to produce certain reaction products, including hydrogen, alcohol, aldehyde, and/or hydrocarbon products. These photocatalysts can form artificial photosystems and can be incorporated into devices that reduce carbon dioxide and water for production of various fuels. Doped wide-bandgap semiconductor nanotubes are provided along with synthesis methods. A variety of optical, electronic and magnetic dopants (substitutional and interstitial, energetically shallow and deep) are incorporated into hollow nanotubes, ranging from a few dopants to heavily-doped semiconductors. The resulting wide-bandgap nanotubes, with desired electronic (p- or n-doped), optical (ultraviolet bandgap to infrared absorption in co-doped nanotubes), and magnetic (from paramagnetic to ferromagnetic) properties, can be used in photovoltaics, display technologies, photocatalysis, and spintronic applications.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 22, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
    Inventors: Prashant Nagpal, Vivek Singh, Ignacio Castellanos Beltran, Yahya Alivov, Yuchen Ding, Logan Jerome Cerkovnik
  • Patent number: 10155220
    Abstract: A titanium oxide particle includes bonded thereon a metal-containing compound which has a hydrocarbon group, wherein the titanium oxide particle has an absorption at 450 nm and 750 nm in a visible absorption spectrum, and with respect to a surface of the particle, an element ratio M/Ti between metal M of the metal-containing compound and titanium is from 0.1 to 0.4 and an element ratio C/Ti between carbon C and titanium is from 0.3 to 1.2.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: December 18, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yasunobu Kashima, Hiroyoshi Okuno, Hideaki Yoshikawa, Takeshi Iwanaga, Sakae Takeuchi
  • Patent number: 10106657
    Abstract: A process is provided for the preparation of lacing resistant, titanium dioxide particles for use in photodurable thin film production. Said process involves dewatering titanium dioxide particles that have been encapsulated with a layer of amorphous alumina in continuous fashion at temperatures in excess of 100° C.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 23, 2018
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Peter Jernakoff, John Davis Bolt
  • Patent number: 9972840
    Abstract: A titanium oxide compound according to the present invention comprises bronze-type titanium oxide or titanium oxide mainly composed of bronze-type titanium oxide, and contains calcium and/or silicon. The titanium oxide compound contains 0.005 to 2.5 mass % inclusive of calcium or 0.15 to 0.55 mass % inclusive of silicon, or contains 0.005 to 1.2 mass % inclusive of calcium and 0.15 to 0.2 mass % inclusive of silicon, or contains 0.005 to 0.1 mass % inclusive of calcium and 0.15 to 0.5 mass % inclusive of silicon.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 15, 2018
    Assignee: KUBOTA CORPORATION
    Inventors: Kenji Higashi, Hiroshi Okumura, Yoshiyuki Hirono
  • Patent number: 9944824
    Abstract: The invention relates to compositions which contain polyorganosiloxanes, a hydrosilylation catalyst, an inhibitor or moderator and doped pyrogenic titanium dioxide, to the use thereof for applying protective coatings to an electrical or electronic component or device and to the protective coatings as such.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: April 17, 2018
    Assignees: ELANTAS GMBH, ANDREAS STEINMANN
    Inventor: Andreas Steinmann
  • Patent number: 9908101
    Abstract: The present invention provides a process and catalyst for the direct and selective conversion of ethane to ethylene. The process provides a direct single step vapor phase selective dehydrogenation/oxidative dehydrogenation of ethane to ethylene over Mo supported nanocrystalline TiO2. The process provides ethane conversion of 65-96% and selectivity of ethylene up to 100%. The process may be conducted in the presence or absence of oxygen.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 6, 2018
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajaram Bal, Bipul Sarkar, Rajib Kumar Singha, Chandrashekar Pendem, Shubhra Acharyya Shankha, Shilpi Ghosh
  • Patent number: 9809461
    Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: November 7, 2017
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
  • Patent number: 9773918
    Abstract: A thin film circuit includes a thin film transistor with a metal oxide semiconductor channel having a conduction band minimum (CBM) with a first energy level. The transistor further includes a layer of passivation material covering at least a portion of the metal oxide semiconductor channel. The passivation material has a conduction band minimum (CBM) with a second energy level. The second energy level being lower than, equal to, or no more than 0.5 eV above the first energy level. The circuit is used for an electronic device including any one of an AMLCD, AMOLED, AMLED, AMEPD.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: September 26, 2017
    Assignee: CBRITE INC.
    Inventors: Gang Yu, Chan-Long Shieh, Juergen Musolf, Fatt Foong, Tian Xiao
  • Patent number: 9744523
    Abstract: Disclosed is a photocatalyst, and methods for its use, that includes a photoactive material comprising a photonic band gap and an electronic band gap, wherein the photonic band gap at least partially overlaps with the electronic band gap, and an electrically conductive material deposited on the photoactive material.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 29, 2017
    Assignee: SABIC Global Technologies B.V.
    Inventors: Hicham Idriss, Ahmed Khaja Wahab, Maher Al-Oufi, Geoff Waterhouse
  • Patent number: 9567236
    Abstract: Ordered acicular aggregates of elongated TiO2 crystallites which resemble nano-sized flower bouquets and/or triangular funnels, and process for their preparation by thermally hydrolyzing a soluble TiO2 precursor compound in aqueous solution in the presence of a morphology controlling agent selected from carboxylic acids and amino acids.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 14, 2017
    Assignee: Cristal Inorganic Chemicals Switzerland Ltd.
    Inventors: Guoyi Fu, Mark B. Watson
  • Patent number: 9504986
    Abstract: Embodiments of the present disclosure provide for multi-component metal-organic materials (MOMs) systems that exhibit permanent porosity and using MOMs to separate components in a gas mixture, methods of separating polarizable gases from a gas mixture, and the like.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: November 29, 2016
    Assignee: University of South Florida
    Inventors: Michael Zaworotko, Patrick Nugent, Vanessah Rhodus
  • Patent number: 9458522
    Abstract: Digestion of a laterite ore with sulfuric acid dissolves all constituents except silica. The resulting sulfates—aluminum sulfate, ferric sulfate, titanyl sulfate, and magnesium sulfate—remain in solution at approximately 90° C. Hot filtration separates silica. Solution flow over metallic iron reduces ferric sulfate to ferrous sulfate. Controlled ammonia addition promotes hydrolysis and precipitation of hydrated titania from titanyl sulfate that is removed by filtration. Continued addition of ammonia forms ferrous ammonium sulfate and ammonium aluminum sulfate solutions. Alum is preferentially separated by crystallization. Ammonia addition to ammonium alum solution precipitates aluminum hydroxide, leaving ammonium sulfate in solution. The remaining iron rich liquor also contains magnesium sulfate. The addition of oxalic acid generates insoluble ferrous oxalate which is thermally decomposed to ferrous oxide and carbon monoxide which is used to reduce the ferrous oxide to metallic iron.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: October 4, 2016
    Assignee: AluChem, Inc.
    Inventor: Ian Manson
  • Patent number: 9352302
    Abstract: Present disclosure provides a process for the synthesis of visible light responsive doped titania photocatalysts. The process involves step a) milling a mixture containing titania and a precursor compound, the compound selected from the group consisting of chloroauric acid and a mixture containing chloroauric acid and silver nitrate, in the presence of water and oxide milling media, at a temperature in the range of 20 to 50° C. for a period of 60-120 minutes, to form a slurry, wherein the amount of water is in the range of 15 to 25% by weight of the total mixture; and b) filtering the slurry to separate the oxide milling media and obtain a filtrate containing doped titania nanoparticles.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: May 31, 2016
    Assignee: TATA CONSULTANCY SERVICES LTD
    Inventors: Auhin Kumar Maparu, Beena Rai
  • Patent number: 9248432
    Abstract: A copper compound-carried titanium oxide photocatalyst which is excellent in a photocatalytic activity and a viral inactivation property and a production process for the same can be provided by a copper compound-carried titanium oxide photocatalyst comprising titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more and a monovalent copper compound and a divalent copper compound which are carried on a surface of the titanium oxide described above and a production process for a copper compound-carried titanium oxide photocatalyst, comprising a step of carrying a monovalent copper compound and a divalent copper compound on a surface of titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: February 2, 2016
    Assignees: THE UNIVERSITY OF TOKYO, SHOW A DENKO K.K.
    Inventors: Kazuhito Hashimoto, Masahiro Miyauchi, Xiaoqing Qiu, Kayano Sunada, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li, Yoshiki Shimodaira
  • Patent number: 9211535
    Abstract: The invention provides a process for producing an aqueous dispersion of particles of rutile titanium oxide, which comprises: a first step in which after a chloride ion concentration of an aqueous solution of titanium tetrachloride is adjusted to 0.5 mole/L or more and less than 4.4 mole/L, the aqueous solution of titanium tetrachloride is heated at a temperature in a range of from 25° C. to 75° C.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: December 15, 2015
    Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takanori Morita, Kenichi Nakagawa, Atsushi Nomura
  • Patent number: 9183993
    Abstract: A one-pot synthesis of Nb5+-doped TiO2 nanoparticles (NPs) with low cost and high efficiency for dye sensitized solar cells (DSSCs) is disclosed in the present invention. The Nb5+-doped TiO2 NPs with Nb dopants of 0˜5 mol % are prepared by directly mixing TiO2 slurry with Nb2O5 gel obtained by UV treatment of a mixture of NbCl5 powder, ethanol and water in a certain ratio, following by heat treatment without using hydrothermal method. The as-prepared NPs exhibit well-crystallized pure anatase TiO2 phase with uniform particle distribution. The incorporation of Nb5+ leads to a stronger and broader light absorption in visible light range and a decrease of band gap with increasing Nb dopant content, which enhances the efficiencies of light-harvesting and electron injection and suppresses the charge recombination. The present method provides a simple and cost-effective mass-production route to synthesize n-type metallic ion doped TiO2 nanoparticles as excellent photoanode materials.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: November 10, 2015
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Shien-Ping Feng, Haijun Su, Ya-Huei Chang, Yu-Ting Huang, Nga Yu Hau, Peng Zhai
  • Patent number: 9159569
    Abstract: Some embodiments include methods of forming charge-trapping zones. The methods may include forming nanoparticles, transferring the nanoparticles to a liquid to form a dispersion, forming an aerosol from the dispersion, and then directing the aerosol onto a substrate to form charge-trapping centers comprising the nanoparticles. The charge-trapping zones may be incorporated into flash memory cells.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: October 13, 2015
    Assignee: Micron Technology, Inc.
    Inventor: Nishant Sinha
  • Patent number: 9108185
    Abstract: Catalyst support materials, catalysts, methods of making such and uses thereof are described. Methods of making catalyst support material include combining anatase titania slurry with i) a low molecular weight form of silica; and ii) a source of Mo to form a TiO2—MoO3—SiO2 mixture. Catalyst support material include from about 86% to about 94% weight anatase titanium dioxide; from about 0.1% to about 10% weight MoO3; and from about 0.1% to about 10% weight SiO2. Low molecular weight forms of silica include forms of silica having a volume weighted median size of less than 4 nm and average molecular weight of less than 44,000, either individually or in a combination of two or more thereof. Catalyst include such catalyst support material with from about 0.1 to about 3% weight of V2O5 and optionally from about 0.01% to about 2.5% weight P.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 18, 2015
    Assignee: Cristal USA Inc.
    Inventors: Steve M. Augustine, David M. Chapman, Dennis F. Clark
  • Patent number: 9085467
    Abstract: The present invention relates to a process for the preparation of materials with nanometric dimensions and controlled shape, based on titanium dioxide. The invention also relates to a process for the preparation of titanium dioxide nanorods and nanocubes with anatase phase composition, which are highly suitable for photocatalytic use, in particular for applications involving photovoltaic cells, for example Dye Sensitized Solar Cells (DSSC), photoelectrolysis cells and tandem cells for the conversion of solar energy and the production of hydrogen.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: July 21, 2015
    Assignee: DAUNIA SOLAR CELL S.R.L.
    Inventors: Isabella Zama, Francesco Matteucci, Christian Martelli, Giuseppe Ciccarella
  • Patent number: 9054238
    Abstract: A photovoltaic cell and method of forming the cell includes providing an electroformed metallic article having a plurality of electroformed elements that form a free-standing, unitary piece. The metallic article has gridlines that are spaced apart at a pitch PM. A semiconductor substrate has a top surface with a plurality of silver, where at least one of the silver patterns comprises pattern segments spaced apart at a pitch PS. The pattern segments have a length LS defined by the equation LS=PM?k*PS/2, k being a value from 1.0 to 1.4. The metallic article is coupled to the semiconductor substrate, in which a first electroformed element in the plurality of electroformed elements is coupled to a first silver pattern in the plurality of silver patterns.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: June 9, 2015
    Assignee: GTAT Corporation
    Inventors: Robert Brainard, Gopal Prabhu, David Tanner, Dong Xu
  • Patent number: 9028615
    Abstract: A domestic appliance includes at least one component having a surface that can become laden with organic dirt. The surface includes a photocatalyst and is made from a primary-formed first material in which the photocatalyst is dispersed. A photoradiation source is provided for irradiating the photocatalyst with an activating electromagnetic radiation.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: May 12, 2015
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Hans Eglmeier, Andreas Hanau, Hartmut Schaub, Ingo Schulze
  • Publication number: 20150110710
    Abstract: The present invention relates to a process for manufacturing low-dusting, smoothly-discharging, easily dispersible, powders such as pigmentary titanium dioxide that resist compaction, aging, lumping, and/or caking. Particularly, the present invention relates to a process for treating powders such as pigmentary titanium dioxide with ammonia or a similarly basic substance prior to or during agglomeration to produce a powder with improved bulk handling properties.
    Type: Application
    Filed: March 29, 2013
    Publication date: April 23, 2015
    Inventors: Timothy Allan Bell, David Richard Corbin, Scott Hutchison, Eugene Michael Mccarron, III, Thomas G. Calvarese
  • Publication number: 20150104374
    Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.
    Type: Application
    Filed: November 24, 2014
    Publication date: April 16, 2015
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Kaoru ISOBE, Katsuichi CHIBA, Takanori SAKAMOTO
  • Patent number: 9005567
    Abstract: A method for producing isolatable oxide microparticles or hydroxide microparticles using an apparatus that processes a fluid between processing surfaces of processing members that are arranged opposite each other so as to be able to approach to or separate from each other and such that at least one can rotate relative to the other. At least two fluids are mixed and oxide microparticles or hydroxide microparticles are separated, said two fluids including: a fluid containing a microparticle raw material solution comprising a microparticle raw material mixed into a solvent, and a fluid containing a microparticle-separation solution.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 14, 2015
    Assignee: M. Technique Co., Ltd.
    Inventors: Jun Kuraki, Kaeko Araki, Masaki Maekawa, Daisuke Honda, Masakazu Enomura
  • Publication number: 20150098883
    Abstract: The present invention disclosed use of lactam as a solvent in the preparation of nanomaterials by precipitation method, sol-gel method or high temperature pyrolysis. These methods are able to recycle lactam solvent, which meet requirements of environmental protection.
    Type: Application
    Filed: January 19, 2012
    Publication date: April 9, 2015
    Applicant: SHANGHAI GENIUS ADVANCED MATERIAL (GROUP) CO., LTD.
    Inventors: Housheng Xia, Guisheng Yang
  • Patent number: 8986580
    Abstract: Disclosed are: a visible-light-responsive titanium oxide microparticle dispersion comprising an aqueous dispersion medium and titanium oxide microparticles dispersed therein, and a peroxotitanium component, an iron component and/or a copper component and a tin component, wherein the content of the peroxotitanium component is 0.1 to 20 mass % relative to the titanium oxide content; and a process for producing a visible-light-responsive titanium oxide microparticle dispersion, comprising (1) producing peroxotitanic acid containing a tin compound from a raw material titanium compound, a tin compound and hydrogen peroxide, (2) heating an aqueous solution of peroxotitanic acid containing the tin compound to 80 to 250° C.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 24, 2015
    Assignee: Shin-etsu Chemical Co., Ltd.
    Inventors: Manabu Furudate, Tomohiro Inoue, Yoshitsugu Eguchi, Tadashi Amano
  • Patent number: 8986642
    Abstract: The present invention relates to spherical beads comprising at least one metal and/or semimetal oxide, having a mean diameter in the range from 10 to 120 ?m, a BET surface area in the range from 400 to 800 m2/g and a pore volume in the range from 0.3 to 3.0 cm3/g, wherein the diameter of a given bead at any one point of said bead deviates by less than 10% from the average diameter of said bead and the surface of said bead is substantially smooth, and also to a process for producing these spherical beads, to a particulate catalyst comprising the spherical beads and to the use of the spherical beads as catalysts or catalyst carriers.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: March 24, 2015
    Assignee: BASF SE
    Inventors: Angela Siegel, Tobias Eckardt, Andreas Braedikow, Thorsten Puvogel
  • Patent number: 8986742
    Abstract: A Rutile-type titanium dioxide having a rectangular particulate form configured such that major axial planes of rod-shaped particles having a minor axis diameter of 3 to 10 nm are oriented and aggregated in the minor axial direction, and a rod-shaped rutile-type titanium dioxide obtained by treating the rectangular rutile-type titanium dioxide with heat, wherein an apparent average major axial length of the oriented and aggregated particles is 100 to 400 nm, an apparent average minor axial length thereof is 30 to 150 nm, an apparent average axial ratio represented by apparent average major axial length/apparent average minor axial length is 2 to 5 and a specific surface area thereof is 10 to 100 m2/g.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: March 24, 2015
    Assignee: Titan Kogyo Kabushiki Kaisha
    Inventors: Akira Nakamura, Masayasu Morishita, Hisayoshi Funatsu, Caihong Liu
  • Publication number: 20150069307
    Abstract: Compositions and methods of making are provided for treated mesoporous metal oxide microspheres electrodes. The compositions include microspheres with an average diameter between about 200 nanometers and about 10 micrometers and mesopores on the surface and interior of the microspheres. The methods of making include forming a mesoporous metal oxide microsphere composition and treating the mesoporous metal oxide microspheres by at least annealing in a reducing atmosphere, doping with an aliovalent element, and coating with a coating composition.
    Type: Application
    Filed: November 12, 2014
    Publication date: March 12, 2015
    Applicant: UT-BATTELLE, LLC
    Inventors: Mariappan Parans Paranthaman, Zhonghe Bi, Craig A. Bridges, Gilbert M. Brown
  • Patent number: 8974592
    Abstract: The present invention relates to a coating composition containing metal oxide particles with a high refractive index and low photocatalytic activity and a coating film obtained by applying the coating composition onto a substrate. The coating composition contains metal oxide particles with a high refractive index obtained by coating the specific fine particles of the titanium-based oxide on their surfaces with at least a silica-based oxide or a silica-based composite oxide, and the coating film is obtained by applying the coating composition onto a substrate. The metal oxide particles with not only a high refractive index but also low photocatalytic activity, and therefore a coating film with excellent weathering resistance and light resistance can be formed on a substrate.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: March 10, 2015
    Assignee: JGC Catalysts and Chemicals, Ltd.
    Inventors: Yoichi Ishihara, Sachio Murai, Toshiharu Hirai, Michio Komatsu
  • Patent number: 8968931
    Abstract: The present invention relates to the preparation of a mesoporous substantially pure anatase titanium oxide (meso-TiO2) and its use in electrochemical devices, in particular lithium-ion batteries.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 3, 2015
    Assignee: National University of Singapore
    Inventors: Palani Balaya, Ananthanarayanan Krishnamoorthy, Saravanan Kuppan
  • Publication number: 20150057151
    Abstract: TiO2 nanoparticles having improved consistent particle morphology, uniform particle size, and which contain uniform intra-particle pores in the mesopore size range are produced by wet chemical hydrolysis.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 26, 2015
    Inventors: Guoyi Fu, Mark Watson
  • Patent number: 8952188
    Abstract: The present invention is related to a family of Group 4 metal precursors represented by the formula: M(OR1)2(R2C(O)C(R3)C(O)OR1)2 wherein M is a Group 4 metals of Ti, Zr, or Hf; wherein R1 is selected from the group consisting of a linear or branched C1-10 alkyl and a C6-12 aryl, preferably methyl, ethyl or n-propyl; R2 is selected from the group consisting of branched C3-10 alkyls, preferably iso-propyl, tert-butyl, sec-butyl, iso-butyl, or tert-amyl and a C6-12 aryl; R3 is selected from the group consisting of hydrogen, C1-10 alkyls, and a C6-12 aryl, preferably hydrogen. In a preferred embodiment of this invention, the precursor is a liquid or a solid with a melting point below 60° C.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: February 10, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Sergei Vladimirovich Ivanov, Xinjian Lei, Hansong Cheng, Daniel P. Spence, Moo-Sung Kim
  • Publication number: 20150037245
    Abstract: The present invention relates to a method for tuning shape, exposed crystal face and size of titanium dioxide by using inorganic salts and changing pH value of the reaction environment. The present invention changes the shape of titanium dioxide crystal and the exposed face thereof by adding different inorganic salts during the reaction to utilize different alkali metal ions of the inorganic salts and also can change the size of titanium dioxide crystal by tuning different pH value in the reaction. By this synthesis method, the shape and size of titanium dioxide can be tuned for different applications, such as photocatalysis, dye-sensitized solar cells, photolysis of water and other optoelectronic components or materials, to achieve their optimal efficiencies.
    Type: Application
    Filed: January 27, 2014
    Publication date: February 5, 2015
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Chi-Young Lee, Hsin-Tien Chiu, Min-Han Yang
  • Publication number: 20150034150
    Abstract: The invention provides a process for producing a mesoporous single crystal of a semiconductor, wherein the shortest external dimension of said single crystal, measured along any of the crystallographic principal axes of said single crystal, is x, wherein x is equal to or greater than 50 nm, which process comprises growing a single crystal of a semiconductor within a mesoporous template material until said shortest external dimension of the single crystal is equal to or greater than x. Further provided is a mesoporous single crystal obtainable by the process of the invention. The invention also provides a mesoporous single crystal of a semiconductor, wherein the shortest external dimension of said single crystal measured along any of the principal axes of said single crystal is equal to or greater than 50 nm. Further provided is a composition comprising a plurality of mesoporous single crystals of the invention. The invention also provides a semiconducting layer of a mesoporous single crystal of the invention.
    Type: Application
    Filed: March 1, 2013
    Publication date: February 5, 2015
    Inventors: Henry James Snaith, Edward James Crossland
  • Patent number: 8945773
    Abstract: According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 ? or more in the powder X-ray diffraction method using a Cu—K? radiation source, thereby making an attempt to improve effective capacity.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki, Keigo Hoshina
  • Publication number: 20150024539
    Abstract: The invention relates to a method for preparing a colloidal nanoparticle solution, including: (a) dissolving a titanium-oxide precursor, referred to as a precursor, in one or more solvents, referred to as precursor solvents; and (b) chemically converting, preferably by means of hydrolysis, said titanium-oxide precursor and said precursor solvent into a colloidal-solution solvent so as to form titanium-oxide nanoparticles that are dispersed in the colloidal-solution solvent, said colloidal solution having a dynamic viscosity of between 4 and 54 cP at 20° C. and 101,325 Pa. The invention also relates to a colloidal titanium-oxide nanoparticle solution containing a dispersion of titanium-oxide nanoparticles in a solvent or system of solvents, the viscosity of which is between 4 and 54 cP, said solution being particularly obtainable according to the method of the invention, as well as to the uses thereof, in particular for preparing photovoltaic cells.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 22, 2015
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S), UNIVERSITE DE NANTES, Commissariat à l'énergie atomique et aux énergies alternatives, ARDEJE
    Inventors: Luc René Roger Brohan, Arkadiusz Michal Karpinski, Mireille Richard-Plouet, Solenn Berson, Stéphane Guillerez, Mickaël Barret, Jérôme Mourao
  • Patent number: 8936675
    Abstract: The present invention relates to new precast cementitious products with photocatalytic activity, and to a process to obtain them.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: January 20, 2015
    Assignee: Italcementi S.p.A.
    Inventor: Roberta Alfani
  • Patent number: 8932556
    Abstract: Ordered acicular aggregates of elongated TiO2 crystallites which resemble nano-sized flower bouquets and/or triangular funnels, and process for their preparation by thermally hydrolyzing a soluble TiO2 precursor compound in aqueous solution in the presence of a morphology controlling agent selected from carboxylic acids and amino acids.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 13, 2015
    Assignee: Cristal USA Inc.
    Inventors: Guoyi Fu, Mark B. Watson
  • Patent number: 8920767
    Abstract: An array of titanium dioxide nanostructures for solar energy utilization includes a plurality of nanotubes, each nanotube including an outer layer coaxial with an inner layer, where the inner layer comprises p-type titanium dioxide and the outer layer comprises n-type titanium dioxide. An interface between the inner layer and the outer layer defines a p-n junction.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: December 30, 2014
    Assignee: UT-Battelle, LLC
    Inventors: Xiaofeng Qiu, Mariappan Parans Paranthaman, Miaofang Chi, Ilia N. Ivanov, Zhenyu Zhang
  • Patent number: 8916236
    Abstract: The invention relates to a method of forming (rutile) titanium dioxide-coated platelet-like pigments in which hydrous titanium dioxide is deposited on platelet-like particles followed by calcining, comprising (a) effecting the titanium deposit in the presence of an ?-hydroxy carboxylic acid, especially glycolic acid, or oxalic acid, and an amino acid, especially glycine, alanine, valine, aspartic acid (?-, ?- and ?-form); or an amino acid; to the pigments obtained by the method and the use thereof. The method can work in the absence of exogenous metal and Ti(III). The rutile TiO2-coated substrate of the present invention has at least the same advantages and characteristics of a tin containing product which includes luster, color, color homogeneity and few small particle formation during manufacture.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: December 23, 2014
    Assignee: Ciba Corporation
    Inventor: Patrice Bujard
  • Patent number: 8911904
    Abstract: Compositions and methods of making are provided for treated mesoporous metal oxide microspheres electrodes. The compositions comprise (a) microspheres with an average diameter between 200 nanometers (nm) and 10 micrometers (?m); (b) mesopores on the surface and interior of the microspheres, wherein the mesopores have an average diameter between 1 nm and 50 nm and the microspheres have a surface area between 50 m2/g and 500 m2/g, and wherein the composition has an electrical conductivity of at least 1×10?7 S/cm at 25° C. and 60 MPa. The methods of making comprise forming a mesoporous metal oxide microsphere composition and treating the mesoporous metal oxide microspheres by at least one method selected from the group consisting of: (i) annealing in a reducing atmosphere, (ii) doping with an aliovalent element, and (iii) coating with a coating composition.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 16, 2014
    Assignee: UT-Battelle, LLC
    Inventors: Mariappan Parans Paranthaman, Zhonghe Bi, Craig A. Bridges, Gilbert M. Brown
  • Publication number: 20140363368
    Abstract: The present invention relates to titanium dioxide nanoparticles, titanate, lithium titanate nanoparticles, and preparation methods thereof. According to the present invention, titanium dioxide nanoparticles having a quasicrystalline phase corresponding to an intermediate form between a crystalline phase and an amorphous phase may be provided.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 11, 2014
    Inventors: Dong Hyun Kim, Jhi-Yong Kim, Juno Seok, Seok-Mo Chung, Jong Son
  • Publication number: 20140356627
    Abstract: A brookite-form crystalline titanium oxide powder has a volume-standard median diameter in the range of 0.3 to 40 ?m as measured by a laser diffraction particle size distribution meter, and contains a brookite-form crystal in an amount of 90% by mass or more as measured by a powder X-ray diffraction method. A method for producing a brookite-form crystalline titanium oxide powder comprises a preparation step of preparing a crystalline titanium oxyoxalate powder, and a heating step of heating the crystalline titanium oxyoxalate powder at a temperature of 550° C. to 820° C.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 4, 2014
    Inventor: Koji Sugiura
  • Patent number: 8900705
    Abstract: TiO2 nanoparticles having improved consistent particle morphology, uniform particle size, and which contain uniform intra-particle pores in the mesopore size range are produced by wet chemical hydrolysis.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 2, 2014
    Assignee: Cristal USA Inc.
    Inventors: Guoyi Fu, Mark Watson
  • Publication number: 20140345676
    Abstract: Disclosed is a method for producing a mesoporous titanium dioxide thin film from a titanium precursor by using a polymer-grafted alumina composite as a support. The porous titanium dioxide thin film is obtained by using the polymer-grafted hybrid alumina composite as a support for sol-gel reaction, and thus it has a mesoporous structure and high surface area, thereby providing a high dye adsorption ratio. Therefore, a dye-sensitized solar cell using the mesoporous titanium dioxide thin film as a photoelectrode material has high energy conversion efficiency. In addition, it is possible to improve the long-term stability of a dye-sensitized solar cell through efficient infiltration of high-viscosity polymer and solid electrolyte as well as liquid electrolyte.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 27, 2014
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION YONSEI UNIVERSITY
    Inventors: Jong-Hak Kim, Jung-Tae Park, Harim Jeon, Sang Jin Kim
  • Patent number: 8883084
    Abstract: A photocatalytic device for reacting with volatile organic compounds includes a photocatalyst and at least one additive, such as hafnium oxide and zirconium oxide, that is capable of forming a stable silicate with silicon dioxide. The additive reacts with volatile silicon-containing compounds to form stable silicate compounds. As a result, the silicon-containing compounds are unavailable for deactivation of the photocatalyst.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: November 11, 2014
    Assignee: Carrier Corporation
    Inventors: Wayde R. Schmidt, Treese Campbell-Hugener, Tania Bhatia
  • Patent number: 8883674
    Abstract: A catalyst support material comprising TiO2, and optionally being doped with a transition metal element, and a method for synthesizing the same have been developed. The catalyst support material exhibits an electrical conductivity comparable to widely-used carbon materials. This is because the TiO2 present is primarily arranged in its rutile crystalline phase. Furthermore, a mesoporous morphology provides the catalyst support material with appropriate porosity and surface area properties such that it may be utilized as part of a fuel cell electrode (anode and/or cathode). The TiO2-based catalyst support material may be formed using a template method in which precursor titanium and transition metal alkoxides are hydrolyzed onto the surface of a latex template, dried, and heat treated.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 11, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Thanh Ba Do, Mei Cai, Martin S. Ruthkosky