A kind of foam nickel-based co-mo-s bifunctional nanocomposite material and its preparation method and application
A nanocomposite material and dual-function technology, applied in the field of electrocatalysis, to achieve high stability and excellent catalytic performance
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Embodiment 1
[0038] S1. After weighing 0.373g (1.5mmol) of cobalt acetate tetrahydrate and dissolving it in 40mL of ethylene glycol to form a uniform solution, add 2.37g (30.0mmol) of ammonium bicarbonate to the above solution, stir for 1h until fully dissolved, and then It was transferred into a 50mL stainless steel reaction kettle with polytetrafluoroethylene lining, sealed and placed in an oven, and reacted at 200°C for 20h. After the reaction was completed, it was naturally cooled to room temperature, and the reaction solution was taken out and centrifuged at 10,000rpm for 2min to obtain The product was washed three times alternately with deionized water and absolute ethanol, and finally dried in a forced air oven at 60 °C for 24 h to obtain a pink cobalt carbonate powder.
[0039] S2, take by weighing 60mg (0.5mmol) cobalt carbonate powder prepared in step S1 and 60mg (0.2mmol) ammonium thiomolybdate respectively and dissolve in 40mL deionized water, ultrasonic 1h obtains homogeneous d...
Embodiment 2
[0047] Weigh 30mg (0.25mmol) cobalt carbonate powder prepared by step S1 in Example 1 and 60mg (0.2mmol) ammonium thiomolybdate and dissolve them in 40mL deionized water, ultrasonic 1h to obtain a uniform dispersion, transfer the dispersion Put into a 50mL stainless steel reaction kettle with polytetrafluoroethylene lining and immerse the processed nickel foam into the solution, place it in a constant temperature oven at 120°C for 3 hours, cool it down to room temperature naturally, and take out the foam nickel with deionized water and Alternately washed with absolute ethanol for 3 times, and then dried in a forced air drying oven at 60°C for 12 hours, and finally a foamed nickel-based Co-Mo-S bifunctional nanocomposite was obtained, abbreviated as Co-Mo-S-1 / NF.
Embodiment 3
[0049] Weigh 90mg (0.75mmol) of cobalt carbonate powder prepared by step S1 in Example 1 and 60mg (0.2mmol) of ammonium thiomolybdate and dissolve them in 40mL of deionized water, and ultrasonically obtain a uniform dispersion for 1h, then transfer the dispersion to Put into a 50mL stainless steel reaction kettle with polytetrafluoroethylene lining and immerse the processed nickel foam into the solution, place it in a constant temperature oven at 120°C for 3 hours, cool it down to room temperature naturally, and take out the foam nickel with deionized water and Alternately washed with absolute ethanol for 3 times, and then dried in a forced air drying oven at 60°C for 12 hours to obtain foamed nickel-based Co-Mo-S bifunctional nanocomposites, abbreviated as Co-Mo-S-3 / NF.
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