Abstract: An adsorption material which includes a carbon nanohorn aggregate in which a plurality of single-walled carbon nanohorns aggregate in a fibrous state, particularly coexisting a globular carbon nanohorn aggregate and some of the single-walled carbon nanohorns included in the carbon nanohorn aggregate have an opening portion, is used. The adsorption material including such a fibrous carbon nanohorn aggregate is produced by a method including: preparing an inert gas atmosphere, a nitrogen gas atmosphere or a mixed atmosphere in a vessel in which a catalyst-containing carbon target is placed; and evaporating the target to obtain a carbon nanohorn aggregate including a fibrous carbon nanohorn aggregate in which a plurality of single-walled carbon nanohorns aggregate in a fibrous state.

Abstract: The present disclosure provides a method for dispersing graphene. The method includes the following steps: providing a graphene material and a graphene dispersant, wherein the graphene dispersant comprises aniline oligomer or aniline oligomer derivative, the aniline oligomer or aniline oligomer derivative is an electroactive polymer, and the aniline oligomer or aniline oligomer derivative is able to combine with the graphene material via ?-? bond; and adding the graphene material and the graphene dispersant to a dispersing medium, making the aniline oligomer or aniline oligomer derivative combine with the graphene material via ?-? bond, and dispersing the graphene material in the dispersing medium by the graphene dispersant.

Abstract: A method for making a carbon nanotube array includes providing a substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface. The substrate has a plurality of through holes spaced from each other, and each of the plurality of through holes extends from the first substrate surface to the second substrate surface. A catalyst layer is deposited on the first substrate surface, to form a composite structure. The composite structure is placed in a chamber. The carbon source gas and protective gas are supplied to the chamber, and the composite structure is heated to a first temperature, to grow a carbon nanotube array on the first substrate surface.

Abstract: The present invention relates to a method for separating semi-conducting and metallic single-walled carbon nanotubes from each other and, if present, from other carbonaceous material, or for separating semi-conducting or metallic single-walled carbon nanotubes from other carbonaceous material via density separation using a solution of a polytungstate; to semi-conducting or metallic single-walled carbon nanotubes obtained by this method; and to the use of these semi-conducting or metallic single-walled carbon nanotubes.

Abstract: The disclosure discloses a method and reagent for improving a yield of selective dispersion of semiconducting carbon nanotubes.

Abstract: A method for manufacturing a roll-shaped and continuous graphene film includes: S1. performing corona treatment on a PI film to obtain a corona PI film, and coiling the corona PI film into a coiled material; S2. heating the coiled material by a heater, and carbonizing the coiled material at a first temperature so as to form a microcrystalline carbon precursor; and S3. graphitizing the carbon precursor at a second temperature, so as to form a graphene film, where in the carbonization and graphitization processes, a central axis of the coiled material is perpendicular, in a same horizontal plane, to a movement direction of the flowing conveyor belt, and the coiled material is horizontally placed and circularly rolls over at 360° around the central axis. Graphene films can be efficiently and continuously produced from roll to roll in large scales with low costs. Moreover, a manufactured product has a high yield.

Abstract: Processes for selectively dispersing semi-conducting single-walled carbon nanotubes (sc-SWCNTs) in a solvent. One process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, in which the amine partially displaces the conjugate polymer associated with the sc-SWNTs dispersed in the solvent. Another process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, with the proviso that the amine excludes EDTA. Also, a process for displacement of a conjugated polymer from the surface of semi-conducting single-walled carbon nanotubes (sc-SWCNTs) dispersed in a solvent, which comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs.

Abstract: A graphene material in a specific form is provided that has a high dispersibility and can maintain a high electric conductivity and ion conductivity when used as material for electrode manufacturing. A graphene dispersion liquid is provided including graphene dispersed in a solvent having a N-methyl pyrolidone content of 50 mass % or more and, when diluted with N-methylpyrolidone to a graphene weight fraction of 0.000013, giving a diluted solution having a weight-based absorptivity coefficient, which is calculated by Equation (1) given below, of 25,000 cm?1 or more and 200,000 cm?1 or less at a wavelength of 270 nm: weight-based absorptivity coefficient (cm?1)=absorbance/{0.000013×cell's optical path length (cm)}.

Abstract: Methods for preparing solid metal oxide nanoparticles via controlled oxidation comprising preparing a plurality of metal nanoparticles, contacting the plurality of metal nanoparticles with an aqueous agent to provide metal oxide nanoparticles having a desired particle size, and removing the resulting metal oxide nanoparticles from the aqueous agent. Aspects of the present disclosure also relate to solid metal oxide nanoparticles obtained by this method.

Abstract: The present invention relates to a method for manufacturing thermally stabilized, non-sticky and stretchable fibers, which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. Also a highly oriented intermediate carbon fiber is disclosed together with a highly oriented carbon fiber.

Abstract: A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40° C. or higher in the oxidation oven.

Abstract: The present invention relates to a process for preparing an aqueous suspension comprising precipitated calcium carbonate. The invention further relates to an aqueous suspension comprising precipitated calcium carbonate as well as a partially dewatered or essentially completely dried precipitated calcium carbonate obtainable by the process and the use of the aqueous suspension comprising precipitated calcium carbonate and/or the partially dewatered or essentially completely dried precipitated calcium carbonate in paper making, paper coating, plastic, agricultural, adhesives, sealants and/or paint applications.

Abstract: High-quality noN-stoichiometric NiOx nanoparticles are synthesized by a facile chemical precipitation method. The NiOx film can function as an effective p-type semiconductor or hole transport layer (HTL) without any post-treatments, while offering wide temperature applicability from room-temperature to 150° C. For demonstrating the potential applications, high efficiency is achieved in organic solar cells using NiOx HTL. Better performance in NiOx based organic light emitting diodes is obtained as compared to devices using PEDOT:PSS. The solution-processed NiOx semiconductors at room temperature can favor a wide-range of applications of large-area and flexible optoelectronics.

Abstract: The present invention is a process, a method, and system for recovery and concentration of dissolved ammonium bicarbonate from a wastewater containing ammonia (NH3) using gas separation, condensation, and crystallization, each at controlled operating temperatures.

Abstract: Methods for determining desired doping conditions for a semiconducting single-walled carbon nanotube (s-SWCNT) are provided. One exemplary method includes doping each of a plurality of s-SWCNT networks under a respective set of doping conditions; determining a thermoelectric (TE) power factor as a function of a fractional bleach of an absorption spectrum for the plurality of s-SWCNT networks doped under the respective sets of doping conditions; and using the function to identify one of the TE power factors within a range of the fractional bleach of the absorption spectrum. The identified TE power factor corresponds to the desired doping conditions.

Abstract: Tantalum vanadate (TaVO5) forms into nanostructures, particularly nanorods, which may range in length between 100 and 600 nm with a length:width ratio between 20:1 to 50:1, and, as a bulk material, have a bandgap of 1.5 to 3.00 eV. Such nanostructures may be prepared by the hydrothermal method.

Abstract: A method for synthesizing carbon nanocages, including N-doped carbon nanocages, includes a first step of forming a solution including a metal salt and an organic carbon source; a second step of drying the solution to obtain a precursor powder; and a third step of annealing the precursor powder to obtain a nanocage including a metal nanoparticle surrounded by a carbon shell. The metal nanoparticle is then removed from the carbon shell by applying an acid solution.

Abstract: A method for separating a carbon nanotube array grown on a growth substrate from the growth substrate includes providing a carbon nanotube array grown on the growth substrate. The carbon nanotube array includes a plurality of carbon nanotube, each of the plurality of carbon nanotubes includes a top end and a bottom end, and the bottom end is bonded to the growth substrate. The bottom end is oxidized to form an oxidized carbon nanotube array. And then the oxidized carbon nanotube array or the growth substrate is applied to a force.

Abstract: Some embodiments are directed to a method and device for reducing a component composed of at least one graphene oxide and a matrix consisting of at least one polymer, characterized in that the method includes at least the following steps: introducing a mixture of polymer(s) and graphene oxide GO into a reactor subject to a value of temperature T and a value of pressure P suitable for placing a fluid under supercritical or subcritical conditions for a given period, the temperature T being suitable for not degrading the polymer; and cooling the reactor and removing the obtained product R consisting of reduced polymer(s) and graphene oxide rGO.

Abstract: A method for synthesizing nanoparticles includes aerosolizing a precursor solution in the presence of a flowing carrier gas to yield a reactant stream, the precursor solution comprising a volatile solvent and a nanoparticle precursor. The method further includes heating the reactant stream to a temperature above a boiling point of the volatile solvent to form a product stream comprising a plurality of nanoparticles, cooling the product stream, and passing the product stream through a collection liquid to collect the nanoparticles from the product stream.