A high-efficiency bimetallic nickel-molybdenum-selenide electrocatalytic material and its preparation method
A metal nickel-molybdenum and selenide electrotechnology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve poor stability, small number of active sites, performance of transition metal molybdenum diselenide Insufficient and other problems, to achieve the effect of stability improvement, high-efficiency catalysis, and improvement of catalytic performance
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[0036] The preparation method of a kind of high-efficiency bimetallic nickel-molybdenum-selenide electrocatalytic material proposed by the present invention comprises steps:
[0037] S1. Preparation of nickel-molybdenum mixed solution: according to the molar ratio of nickel to molybdenum of 1-3:1-3, nickel source and molybdenum source are added to the solvent containing surfactant, and after stirring and mixing, the obtained Said nickel-molybdenum mixture;
[0038]S2. Preparation of nanowire precursor: transfer the nickel-molybdenum mixture into a reaction vessel filled with nickel foam (Nickel foam, NF) for solvothermal treatment, take out the nickel foam and vacuum-dry it to obtain in-situ growth the nanowire precursor;
[0039] S3, primary calcination: the nanowire precursor is covered with selenium powder, and the first calcination is carried out at 300-500°C in an argon-hydrogen mixed atmosphere to obtain a nickel-molybdenum bimetallic selenide material Ni with a nickel ...
Embodiment 1
[0064] S1, Preparation of nickel-molybdenum mixed solution: Preparation of nickel-molybdenum mixed solution: Take 81.4mg nickel nitrate hexahydrate, 74.1mg ammonium molybdate tetrahydrate (molar ratio Ni:Mo=2:3) and 65mg CTAB dissolved in 30mL solvent B In the aqueous glycol solution, the nickel-molybdenum mixed solution is obtained after magnetic stirring for half an hour;
[0065] S2, preparation of nanowire precursor: transfer the nickel-molybdenum mixture into a clean container with an area of 1x3cm 2 In the reaction kettle (50mL) of foamed nickel, put the reaction kettle into an oven, heat it at 160°C for 6 hours and carry out solvent heat treatment, take out the foamed nickel and rinse it several times with ethanol aqueous solution, then put it into a vacuum oven, and heat it at 60 After vacuum drying for 3 hours at °C, the nanowire precursor grown in situ on nickel foam (NF) was obtained;
[0066] S3, calcining: cutting the nanowire precursor into 0.5x1.5 cm 2 The s...
Embodiment 2
[0069] A kind of nickel molybdenum double metal selenide catalytic material Ni of the present invention 0.85 Se-MoSe 2 The preparation method of / NF comprises the steps:
[0070] S1, Preparation of nickel-molybdenum mixed solution: Preparation of nickel-molybdenum mixed solution: Take 81.4mg nickel nitrate hexahydrate, 74.1mg ammonium molybdate tetrahydrate (molar ratio Ni:Mo=2:3) and 65mg CTAB dissolved in 30mL solvent B In the aqueous glycol solution, the nickel-molybdenum mixed solution is obtained after magnetic stirring for half an hour;
[0071] S2, preparation of nanowire precursor: transfer the nickel-molybdenum mixture into a clean container with an area of 1x3cm 2 In the reaction kettle (50mL) of nickel foam, the reaction kettle was put into an oven, and after heat treatment by solvent at 180°C for 6 hours, the nickel foam was taken out and rinsed several times with aqueous ethanol solution, and then put into a vacuum oven, at 60 The nanowire precursor grown in ...
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