Transition metal phosphide hydrogen-evolution composite material as well as preparation method and application thereof

A transition metal and composite material technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrolysis processes, etc., can solve the problems of complex transition metal phosphide methods, large consumption, dangerous operation, etc. The effect of large-scale production, improved application value and low price
CN109590002AInactive Publication Date: 2019-04-09CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2019-04-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the hydrogen-evolution material field and particularly discloses a transition metal phosphide hydrogen-evolution composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a phosphorus source into water, and adding a certain amount of an organic amine alkali compound, so as to obtain a solution A, wherein the phosphorus source is at least one of a polymer containing phosphonic acid groups and a monomer containing phosphonic acid groups; adding a transition metal source into the solution A, and stirring to obtain dispersion liquid B; adding agar into the dispersion liquid B, and stirring, so as to obtain double-network hydrogel; cooling the double-network hydrogel, and drying, so as toobtain dried gel; and calcining the dried gel at 750-1000 DEG C in a protective atmosphere, so as to obtain the transition metal phosphide hydrogen-evolution composite material. The preparation method is wide in raw material source and low in cost, obtained transition metal phosphide has excellent electro-catalytic property, and the preparation method is hopefully applied to the industrial production.
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Description

technical field

[0001] The invention belongs to the field of hydrogen-producing materials, and relates to a double-network hydrogel, in particular to a metal phosphide hydrogen-evolution composite material prepared by using the double-network hydrogel and a preparation method thereof. Background technique

[0002] In recent years, transition metal phosphides (TMPs) have attracted intense interest in catalyzing the hydrogen evolution reaction (HER) due to their high activity and low cost. However, there are currently two main strategies for the preparation of TMP, namely, solution-phase reaction and solid-phase reaction. Considering the strong coordination effect, trioctylphosphine (TOP) is a common phosphorus source for most solution-phase reactions. However, observing the demand for high-temperature organic solvents on the reaction system indicates that solution-phase reactions are highly corrosive and flammable. by NaH 2 PO 2 The PH produced by thermal decomposition 3...

Claims

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