A process for producing a material in the form of nanosheets by ball milling of crystals of the material, wherein the ball milling takes place in the presence of a reactive gas.

A process for obtaining borazane (NH.sub.3BH.sub.3) includes introducing anhydrous liquid ammonia (NH.sub.3(l)) into a reactor thermostatically regulated to between a temperature .sub.1 and 40 C.; introducing, with stirring, into the reactor an amine borane complex (Am.BH.sub.3), the corresponding amine (Am) of which is soluble in anhydrous liquid ammonia only to a proportion of less than 10 g in 100 g of ammonia at 20 C., being introduced in an amount such that the mole ratio R=(NH.sub.3(l))/(Am.BH.sub.3) is greater than or equal to 5; stirring the mixture; stopping the stirring to obtain two demixed phases: a light phase constituted essentially of a solution of anhydrous liquid ammonia (NH.sub.3(l)) containing borazane; and a heavy phase constituted essentially of the amine corresponding to the amine borane complex introduced; isolating the borazane and drying under vacuum thereof; the temperature .sub.1 being greater than or equal to the melting point of the amine borane complex.

A process for obtaining borazane (NH.sub.3BH.sub.3) includes introducing anhydrous liquid ammonia (NH.sub.3(l)) into a reactor thermostatically regulated to between a temperature .sub.1 and 40 C.; introducing, with stirring, into the reactor an amine borane complex (Am.BH.sub.3), the corresponding amine (Am) of which is soluble in anhydrous liquid ammonia only to a proportion of less than 10 g in 100 g of ammonia at 20 C., being introduced in an amount such that the mole ratio R=(NH.sub.3(l))/(Am.BH.sub.3) is greater than or equal to 5; stirring the mixture; stopping the stirring to obtain two demixed phases: a light phase constituted essentially of a solution of anhydrous liquid ammonia (NH.sub.3(l)) containing borazane; and a heavy phase constituted essentially of the amine corresponding to the amine borane complex introduced; isolating the borazane and drying under vacuum thereof; the temperature .sub.1 being greater than or equal to the melting point of the amine borane complex.

A method and apparatus for preparing boron nitride nanotubes (BNNTs) according to an embodiment may ensure mass-production, may increase yield by reducing a production time, and may prepare BNNTs with high purity. The method includes steps of providing a first powder including boron, forming a second powder including a boron precursor by nano-sizing the first powder, forming a precursor disk by mixing the second powder with a binder; and growing BNNTs on the precursor disk.

The present disclosure relates to the technical field of photocatalysis/electrocatalysis, and in particular to a non-metallic high-entropy compound, and a preparation method and use thereof. In the present disclosure, the non-metallic high-entropy compound includes at least five non-metallic elements, where each of the at least five non-metallic elements has a molar proportion of 0.1% to 99.0%, and a total atomic proportion of the at least five non-metallic elements are 100%. The non-metallic high-entropy compound has a controllable band gap, an adjustable conductivity, and a desirable surface activity, and shows a catalytic reaction activity for hydrogen production by high-efficiency photocatalytic/electrocatalytic water splitting, carbon dioxide reduction, or organic pollutant degradation. Moreover, synthetic raw materials are all non-metals, which are cheap and easily available, while a synthesis process is simple and easy to implement.

The present disclosure relates to the technical field of photocatalysis/electrocatalysis, and in particular to a non-metallic high-entropy compound, and a preparation method and use thereof. In the present disclosure, the non-metallic high-entropy compound includes at least five non-metallic elements, where each of the at least five non-metallic elements has a molar proportion of 0.1% to 99.0%, and a total atomic proportion of the at least five non-metallic elements are 100%. The non-metallic high-entropy compound has a controllable band gap, an adjustable conductivity, and a desirable surface activity, and shows a catalytic reaction activity for hydrogen production by high-efficiency photocatalytic/electrocatalytic water splitting, carbon dioxide reduction, or organic pollutant degradation. Moreover, synthetic raw materials are all non-metals, which are cheap and easily available, while a synthesis process is simple and easy to implement.

The invention relates to a method for obtaining sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or mixtures thereof from the powder of said materials. Said sheets consist of a set of strips, wherein said strips consist of between one and five layers. Said layers are layers of graphene, hexagonal boron nitride, molybdenum disulfide or tungsten disulfide having a monoatomic or monomolecular thickness. The invention also relates to a method for coating a surface with sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or sheets of mixtures thereof.

The invention relates to a method for obtaining sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or mixtures thereof from the powder of said materials. Said sheets consist of a set of strips, wherein said strips consist of between one and five layers. Said layers are layers of graphene, hexagonal boron nitride, molybdenum disulfide or tungsten disulfide having a monoatomic or monomolecular thickness. The invention also relates to a method for coating a surface with sheets of graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide or sheets of mixtures thereof.

An electrophotographic component includes a substrate and an optional cushioning layer disposed on the substrate. The optional cushioning layer comprises a material selected from the group consisting of silicones, fluorosilicones and fluoroelastomers. An optional release layer is disposed on the substrate and if present, on the optional cushioning layer. The optional release layer comprises a fluoropolymer. The substrate, the optional cushioning layer, the optional release layer, or any combination thereof, comprise a plurality of fluorinated boron nitride nanosheets. The electrophotographic component comprises at least one layer selected from the optional cushioning layer and the optional release layer.

Described herein are apparatus, systems, and methods for the continuous production of BNNT fibers, BNNT strands and BNNT initial yarns having few defects and good alignment. BNNTs may be formed by thermally exciting a boron feedstock in a chamber in the presence of pressurized nitrogen. BNNTs are encouraged to self-assemble into aligned BNNT fibers in a growth zone, and form BNNT strands and BNNT initial yarns, through various combinations of nitrogen gas flow direction and velocities, heat source distribution, temperature gradients, and chamber geometries.