Provided are methods of stabilizing MXene compositions using polyanionic salts so as to reduce the oxidation of the MXenes. Also provided are stabilized MXene compositions.

Provided are methods of stabilizing MXene compositions using polyanionic salts so as to reduce the oxidation of the MXenes. Also provided are stabilized MXene compositions.

Provided is a three-phase system V.sub.2O.sub.3/VN/Mo.sub.2C nanoelectrode material, and a preparation method and application thereof. The nanoelectrode material comprises V.sub.2O.sub.3 particles, VN particles, and Mo.sub.2C particles. The V.sub.2O.sub.3 particles, VN particles, and Mo.sub.2C particles are interlaced in lattice stripes and are uniformly distributed. The mass ratio of the V.sub.2O.sub.3, VN and Mo.sub.2C is (1 to 4):(10 to 40):(4 to 16). The above-mentioned three kinds of nanoparticles are intertwined to form more incoherent interface area. The increase in the area of the incoherent interface area will cause more defects, so that more active sites are provided, and the hydrogen production performance is improved.

The present disclosure relates to a method of preparing a nano-porous powder material. The method includes: firstly removing A in the alloy A.sub.xT.sub.y by using an ultrasonically-assisted de-alloying method to prepare a nano-porous T coarse powder, and then, allowing the nano-porous T coarse powder to perform M-ization reaction with a gas reactant containing M to obtain a nano-porous T-M coarse powder, and finally, further crushing the nano-porous T-M coarse powder using a jet mill to obtain a nano-porous T-M fine powder. The method can achieve low-cost mass production of the nano-porous T-M fine powder, bringing broad application prospects.

Provided are methods of stabilizing MXene compositions using polyanionic salts so as to reduce the oxidation of the MXenes. Also provided are stabilized MXene compositions.

Reactant materials for use in the synthesis of compounds comprising a non-metal and hydrogen, and methods of making and using the same are provided. The reactant materials generally comprise first and second non-metals, metals, a cation, and a transition metal, and can be formed and used in reactions occurring at relatively low-pressure conditions using heat energy that can be supplied via solar radiation. In particular, the reactant materials can be used in the synthesis of ammonia and various hydrocarbon compounds using air, water, and sunlight.

A method of producing nitride nanoparticles comprises reacting at least one organometallic compound, for example an alkyl metal, with at least one source of nitrogen. The reaction may involve one or more liquid phase organometallic compounds, or may involve one or more liquid phase organometallic compounds dissolved in a solvent or solvent mixture. The reaction constituents may be heated to a desired reaction temperature (for example in the range 40 C. to 300 C.).

Provided is a three-phase system V.sub.2O.sub.3/VN/Mo.sub.2C nanoelectrode material, and a preparation method and application thereof. The nanoelectrode material comprises V.sub.2O.sub.3 particles, VN particles, and Mo.sub.2C particles. The V.sub.2O.sub.3 particles, VN particles, and Mo.sub.2C particles are interlaced in lattice stripes and are uniformly distributed. The mass ratio of the V.sub.2O.sub.3, VN and Mo.sub.2C is (1 to 4):(10 to 40):(4 to 16). The above-mentioned three kinds of nanoparticles are intertwined to form more incoherent interface area. The increase in the area of the incoherent interface area will cause more defects, so that more active sites are provided, and the hydrogen production performance is improved.

Provided are methods of stabilizing MXene compositions using polyanionic salts so as to reduce the oxidation of the MXenes. Also provided are stabilized MXene compositions.

The present disclosure relates to a method of preparing a nano-porous powder material. The method includes: firstly removing A in the alloy A.sub.xT.sub.y by using an ultrasonically-assisted de-alloying method to prepare a nano-porous T coarse powder, and then, allowing the nano-porous T coarse powder to perform M-ization reaction with a gas reactant containing M to obtain a nano-porous T-M coarse powder, and finally, further crushing the nano-porous T-M coarse powder using a jet mill to obtain a nano-porous T-M fine powder. The method can achieve low-cost mass production of the nano-porous T-M fine powder, bringing broad application prospects.