Patents by Inventor Tina M. Nenoff
Tina M. Nenoff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230168231Abstract: The invention is directed to a chemically robust, highly-selective, low power sensor that can be used for the direct electrical detection of mixed gases. In particular, metal-organic frameworks (MOFs) offer exceptional chemical and structural tunability as mixed-gas capture materials. As an example of the invention, the influence of interfering gases on trace NO2 detection in a simulated flue gas stream was investigated. The unique interaction of NO2 with the MOF's metal center leads to orders of magnitude decrease in MOF resistance. More broadly, the coadsorption of specific gases (e.g., H2O, SO2) can be beneficial to the electrical detection of the target gas (e.g., NO2), and careful electrical measurements can discern their presence independent of the target gas.Type: ApplicationFiled: January 31, 2023Publication date: June 1, 2023Inventors: Leo J. Small, Stephen J. Percival, Tina M. Nenoff, Mara E. Schindelholz
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Patent number: 11573217Abstract: Detection and capture of toxic nitrogen oxides (NOx) is important for emissions control of exhaust gases and general public health. The low power sensor provides direct electrically detection of trace (0.5-5 ppm) NO2 at relatively low temperatures (50° C.) via changes in the electrical properties of nitrogen-oxide-capture active materials. For example, the high impedance of MOF-74 enables applications requiring a near-zero power sensor or dosimeter, such as for smart industrial systems and the internet of things, with 0.8 mg MOF-74 active material drawing <15 pW for a macroscale sensor 35 mm2 area.Type: GrantFiled: February 11, 2021Date of Patent: February 7, 2023Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Leo J. Small, Susan Elizabeth Henkelis, Stephen J. Percival, Tina M. Nenoff, Mara Elizabeth Schindelholz
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Publication number: 20220260541Abstract: Detection and capture of toxic nitrogen oxides (NOx) is important for emissions control of exhaust gases and general public health. The low power sensor provides direct electrically detection of trace (0.5-5 ppm) NO2 at relatively low temperatures (50° C.) via changes in the electrical properties of nitrogen-oxide-capture active materials. For example, the high impedance of MOF-74 enables applications requiring a near-zero power sensor or dosimeter, such as for smart industrial systems and the internet of things, with 0.8 mg MOF-74 active material drawing <15 pW for a macroscale sensor 35 mm2 area.Type: ApplicationFiled: February 11, 2021Publication date: August 18, 2022Inventors: Leo J. Small, Susan Elizabeth Henkelis, Stephen J. Percival, Tina M. Nenoff
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Patent number: 11378547Abstract: We provide an electrochemical sensor in which working microelectrodes are arranged in an array and interconnected in parallel. The working electrodes are arranged so that in use, they are electrochemically coupled to a counter electrode structure through an electrolyte. The sensor also includes a microporous body arranged so that in use, it is situated at a boundary between a gaseous environment and the electrolyte. In another aspect, we provide a method of sensing in which a sample of gas is admitted to a liquid electrolyte maintained by pores of a porous substrate. A voltage is applied to the liquid electrolyte, and an electrical response to the applied voltage is observed, thereby to detect electrochemical evidence of an analyte within the liquid electrolyte.Type: GrantFiled: September 17, 2019Date of Patent: July 5, 2022Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Kyle Chris Klavetter, William G. Yelton, Tina M. Nenoff, Michael P. Siegal, Carlos R. Perez
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Publication number: 20210231628Abstract: The present invention relates to a metal-organic framework composition, as well as constructs and methods thereof. In one particular example, the composition is employed to detect the presence of an acid gas.Type: ApplicationFiled: January 6, 2021Publication date: July 29, 2021Inventors: Tina M. Nenoff, Dorina F. Sava Gallis, Dayton Jonathan Vogel, Jessica Rimsza
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Patent number: 10549261Abstract: MOFs are disclosed that can efficiently adsorb oxygen from a gas stream, such as air. Systems and methods are also disclosed that utilize MOFs to separate oxygen from a gas stream. The separated oxygen may be used in a commercial process such as a combustion process.Type: GrantFiled: May 20, 2019Date of Patent: February 4, 2020Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Marie Vernell Parkes, Jeffery Greathouse
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Publication number: 20190302078Abstract: An all solid-state, MOF-, zeolite-, or activated carbon-based electrical readout sensor with a long-lived signal can be tuned specifically for real-time sensing of iodine gas in ambient conditions. The sensor may be of use in nuclear accident scenarios for first responders and/or as process sensors in advanced nuclear fuel recycling.Type: ApplicationFiled: March 27, 2018Publication date: October 3, 2019Inventors: Leo J. Small, Tina M. Nenoff
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Publication number: 20190270068Abstract: MOFs are disclosed that can efficiently adsorb oxygen from a gas stream, such as air. Systems and methods are also disclosed that utilize MOFs to separate oxygen from a gas stream. The separated oxygen may be used in a commercial process such as a combustion process.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Inventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Marie Vernell Parkes, Jeffery Greathouse
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Patent number: 10343141Abstract: MOFs are disclosed that can efficiently adsorb oxygen from a gas stream, such as air. Systems and methods are also disclosed that utilize MOFs to separate oxygen from a gas stream. The separated oxygen may be used in a commercial process such as a combustion process.Type: GrantFiled: September 19, 2016Date of Patent: July 9, 2019Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Marie Vernell Parkes, Jeffery A. Greathouse
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Patent number: 9741945Abstract: The present disclosure is directed to new photoluminescent metal-organic frameworks (MOFs). The newly developed MOFs include either non rare earth element (REE) transition metal atoms or limited concentrations of REE atoms, including: Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Y, Ru, Ag, Cd, Sn, Sb, Ir, Pb, Bi, that are located in the MOF framework in site isolated locations, and have emission colors ranging from white to red, depending on the metal concentration levels and/or choice of ligand.Type: GrantFiled: June 30, 2014Date of Patent: August 22, 2017Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Lauren E.S. Rohwer
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Patent number: 9552897Abstract: Systems and methods for capturing waste are disclosed. The systems and methods provide for a high level of confinement and long term stability. The systems and methods include adsorbing waste into a metal-organic framework (MOF), and applying pressure to the MOF material's framework to crystallize or make amorphous the MOF material thereby changing the MOF's pore structure and sorption characteristics without collapsing the MOF framework.Type: GrantFiled: September 18, 2015Date of Patent: January 24, 2017Assignee: Sandia CorporationInventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Karena Chapman, Peter Chupas
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Patent number: 9343192Abstract: Materials and methods of making densified waste forms for temperature sensitive waste material, such as nuclear waste, formed with low temperature processing using metallic powder that forms the matrix that encapsulates the temperature sensitive waste material. The densified waste form includes a temperature sensitive waste material in a physically densified matrix, the matrix is a compacted metallic powder. The method for forming the densified waste form includes mixing a metallic powder and a temperature sensitive waste material to form a waste form precursor. The waste form precursor is compacted with sufficient pressure to densify the waste precursor and encapsulate the temperature sensitive waste material in a physically densified matrix.Type: GrantFiled: July 21, 2015Date of Patent: May 17, 2016Assignee: Sandia CorporationInventors: Terry J. Garino, Tina M. Nenoff, Dorina Florentina Sava Gallis
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Publication number: 20160012927Abstract: Systems and methods for capturing waste are disclosed. The systems and methods provide for a high level of confinement and long term stability. The systems and methods include adsorbing waste into a metal-organic framework (MOF), and applying pressure to the MOF material's framework to crystallize or make amorphous the MOF material thereby changing the MOF's pore structure and sorption characteristics without collapsing the MOF framework.Type: ApplicationFiled: September 18, 2015Publication date: January 14, 2016Inventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Karena Chapman, Peter Chupas
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Publication number: 20150332798Abstract: Materials and methods of making densified waste forms for temperature sensitive waste material, such as nuclear waste, formed with low temperature processing using metallic powder that forms the matrix that encapsulates the temperature sensitive waste material. The densified waste form includes a temperature sensitive waste material in a physically densified matrix, the matrix is a compacted metallic powder. The method for forming the densified waste form includes mixing a metallic powder and a temperature sensitive waste material to form a waste form precursor. The waste form precursor is compacted with sufficient pressure to densify the waste precursor and encapsulate the temperature sensitive waste material in a physically densified matrix.Type: ApplicationFiled: July 21, 2015Publication date: November 19, 2015Inventors: Terry J. Garino, Tina M. Nenoff, Dorina Florentina Sava Gallis
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Patent number: 9162914Abstract: The present disclosure is directed to systems and methods that absorb waste into a metal-organic framework (MOF), and applying pressure to the MOF material's framework to crystallize or make amorphous the MOF material thereby changing the MOF's pore structure and sorption characteristics without collapsing the MOF framework.Type: GrantFiled: October 23, 2013Date of Patent: October 20, 2015Assignee: Sandia CorporationInventors: Tina M. Nenoff, Dorina Florentina Sava Gallis, Karena Chapman, Peter Chupas
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Patent number: 9117560Abstract: Materials and methods of making densified waste forms for temperature sensitive waste material, such as nuclear waste, formed with low temperature processing using metallic powder that forms the matrix that encapsulates the temperature sensitive waste material. The densified waste form includes a temperature sensitive waste material in a physically densified matrix, the matrix is a compacted metallic powder. The method for forming the densified waste form includes mixing a metallic powder and a temperature sensitive waste material to form a waste form precursor. The waste form precursor is compacted with sufficient pressure to densify the waste precursor and encapsulate the temperature sensitive waste material in a physically densified matrix.Type: GrantFiled: November 15, 2013Date of Patent: August 25, 2015Assignee: Sandia CorporationInventors: Terry J. Garino, Tina M. Nenoff, Dorina Florentina Sava Gallis
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Patent number: 8926870Abstract: Materials and methods of synthesizing mixed-layered bismuth oxy-iodine materials, which can be synthesized in the presence of aqueous radioactive iodine species found in caustic solutions (e.g. NaOH or KOH). This technology provides a one-step process for both iodine sequestration and storage from nuclear fuel cycles. It results in materials that will be durable for repository conditions much like those found in Waste Isolation Pilot Plant (WIPP) and estimated for Yucca Mountain (YMP). By controlled reactant concentrations, optimized compositions of these mixed-layered bismuth oxy-iodine inorganic materials are produced that have both a high iodine weight percentage and a low solubility in groundwater environments.Type: GrantFiled: January 29, 2013Date of Patent: January 6, 2015Assignee: Sandia CorporationInventors: James L. Krumhansl, Tina M. Nenoff
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Patent number: 8383021Abstract: Materials and methods of synthesizing mixed-layered bismuth oxy-iodine materials, which can be synthesized in the presence of aqueous radioactive iodine species found in caustic solutions (e.g. NaOH or KOH). This technology provides a one-step process for both iodine sequestration and storage from nuclear fuel cycles. It results in materials that will be durable for repository conditions much like those found in Waste Isolation Pilot Plant (WIPP) and estimated for Yucca Mountain (YMP). By controlled reactant concentrations, optimized compositions of these mixed-layered bismuth oxy-iodine inorganic materials are produced that have both a high iodine weight percentage and a low solubility in groundwater environments.Type: GrantFiled: November 12, 2009Date of Patent: February 26, 2013Assignee: Sandia CorporationInventors: James L. Krumhansl, Tina M. Nenoff
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Patent number: 8262950Abstract: Materials and methods of making low-sintering-temperature glass waste forms that sequester radioactive iodine in a strong and durable structure. First, the iodine is captured by an adsorbant, which forms an iodine-loaded material, e.g., AgI, AgI-zeolite, AgI-mordenite, Ag-silica aerogel, ZnI2, CuI, or Bi5O7I. Next, particles of the iodine-loaded material are mixed with powdered frits of low-sintering-temperature glasses (comprising various oxides of Si, B, Bi, Pb, and Zn), and then sintered at a relatively low temperature, ranging from 425° C. to 550° C. The sintering converts the mixed powders into a solid block of a glassy waste form, having low iodine leaching rates. The vitrified glassy waste form can contain as much as 60 wt % AgI. A preferred glass, having a sintering temperature of 500° C. (below the silver iodide sublimation temperature of 500° C.) was identified that contains oxides of boron, bismuth, and zinc, while containing essentially no lead or silicon.Type: GrantFiled: March 19, 2010Date of Patent: September 11, 2012Assignee: Sandia CorporationInventors: Tina M. Nenoff, James L. Krumhansl, Terry J. Garino, Nathan W. Ockwig
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Patent number: 7998239Abstract: A method of forming stable nanoparticles comprising substantially uniform alloys of metals. A high dose of ionizing radiation is used to generate high concentrations of solvated electrons and optionally radical reducing species that rapidly reduce a mixture of metal ion source species to form alloy nanoparticles. The method can make uniform alloy nanoparticles from normally immiscible metals by overcoming the thermodynamic limitations that would preferentially produce core-shell nanoparticles.Type: GrantFiled: November 18, 2009Date of Patent: August 16, 2011Assignee: Sandia CorporationInventors: Tina M. Nenoff, Dana A. Powers, Zhenyuan Zhang