The present invention provides an improved sorbent and corresponding device(s) and uses thereof for the capture and stabilization of volatile organic compounds (VOC) or semi-volatile organic compounds (SVOC) from a gaseous atmosphere. The sorbent is capable of rapid and high uptake of one or more compounds and provides quantitative release (recovery) of the compound(s) when exposed to elevated temperature and/or organic solvent. Uses of particular improved grades of mesoporous silica are disclosed.

A method for producing a semiconducting SWCNT dispersion of the present invention comprises: a step A of preparing a to-be-separated SWCNT dispersion that includes a SWCNT mixture, an aqueous medium, and a polymer including a structural unit A derived from a monomer represented by Formula (1), and a step B of centrifuging the to-be-separated SWCNT dispersion and subsequently collecting a supernatant including the semiconducting SWCNT from the centrifuged to-be-separated SWCNT dispersion. The weight-average molecular weight of the polymer is 1,000 or more and 100,000 or less.

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A method for making a carbon nanotube composite structure includes the following steps: dispersing a plurality of carbon nanotubes in water, to form a carbon nanotube dispersion; adding an aniline solution into the carbon nanotube dispersion, to form a mixed solution; adding an initiator into the mixed solution, to form a carbon nanotube composite structure preform; freeze-drying the carbon nanotube composite structure preform in a vacuum environment; and carbonizing the carbon nanotube composite structure preform in a protective gas after freeze-drying. The present application also relates to the carbon nanotube composite structure.

A bioelectrode includes an inorganic base material and a conductive layer covering the inorganic base material, in which the conductive layer has a polymer having moieties derived from a first compound having an epoxy group and an alkoxysilyl group, and at least one of an alkali metal ion and a Group 2 element ion supported in the polymer, and in the polymer, the moiety derived from the epoxy group is ring-opening polymerized, and the moiety derived from the alkoxysilyl group forms a siloxane bond.

Compositions contain boron nitride nanomaterials at least partially coated with biomolecules.

The present invention provides an improved sorbent and corresponding device(s) and uses thereof for the capture and stabilization of volatile organic compounds (VOC) or semi-volatile organic compounds (SVOC) from a gaseous atmosphere. The sorbent is capable of rapid and high uptake of one or more compounds and provides quantitative release (recovery) of the compound(s) when exposed to elevated temperature and/or organic solvent. Uses of particular improved grades of mesoporous silica are disclosed.

The present application pertains to dispersions comprising oxidized, discrete carbon nanotubes and high-surface area carbon nanotubes. The oxidized, discrete carbon nanotubes comprise an interior and exterior surface, each surface comprising an interior surface oxidized species content and an exterior surface oxidized species content. The interior surface oxidized species content differs from the exterior surface oxidized species content by at least 20%, and as high as 100%. The high-surface area nanotubes are generally single-wall nanotubes. The BET surface area of the high-surface area nanotubes is from about 550 m.sup.2/g to about 1500 m.sup.2/g according to ASTM D6556-16. The aspect ratio is at least about 500 up to about 6000. The dispersions comprise from about 0.1 to about 30% by weight nanotubes based on the total weight of the dispersion.

High quality, catalyst-free boron nitride nanotubes (BNNTs) that are long, flexible, have few wall molecules and few defects in the crystalline structure, can be efficiently produced by a process driven primarily by Direct Induction. Secondary Direct Induction coils, Direct Current heaters, lasers, and electric arcs can provide additional heating to tailor the processes and enhance the quality of the BNNTs while reducing impurities. Heating the initial boron feed stock to temperatures causing it to act as an electrical conductor can be achieved by including refractory metals in the initial boron feed stock, and providing additional heat via lasers or electric arcs. Direct Induction processes may be energy efficient and sustainable for indefinite period of time. Careful heat and gas flow profile management may be used to enhance production of high quality BNNT at significant production rates.

High quality Boron Nitride Nanotubes (BNNTs) may be synthesized by heating a boron melt target via one or more laser diodes, including laser diode stacks. The use of a diode stack and beam shaping optics to irradiate the boron melt eliminates the need for a conventional laser cavity as has been employed with previous embodiments. The diode arrangements facilitate managing power distribution on the born melt(s), nitrogen gas flows, and blackbody radiation that drive the BNNT self-assembly process. These parameters may be used for controlling the proportions and characteristics of boron species, a-BN particles, h-BN nanocages, and h-BN nano sheets in the as-synthesized BNNT material while enhancing the quality of the BNNTs.

An electrolysis electrode includes a metal-doped array of nanotubes formed on a substrate. The nanotube array (NTA) may be a stabilized metal-doped black TiO.sub.2 NTA formed on a titanium substrate, and the metal dopant may include any suitable metal, for example, cobalt. The metal dopant improves the reactivity of the electrode and enhances its service life. The metal-doped NTA electrode may provide improved chlorine evolution and/or oxygen evolution activity for electrochemical wastewater treatment. The electrode may also be useful for water splitting applications. Increasing the loading of the metal dopant may lead to the formation of a metal oxide layer on top of the NTA, which improves oxygen evolution reaction (OER) overpotential.