Preparation method of cuprous oxide-cobaltosic oxide core-shell material for electrocatalytic hydrolysis and product of preparation method
A technology of tricobalt tetroxide and cuprous oxide, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, electrolysis process, etc., can solve problems such as reduction of electrocatalytic activity, deactivation of metal oxides, simple material structure, etc., and achieve low production cost , Excellent catalytic activity, simple operation process
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Embodiment 1
[0032] (1) Prepare 1M copper nitrate solution, add 1.0g / L polyvinylpyrrolidone to the copper nitrate solution, add 3.7M sodium hydroxide and 1.75M glucose dropwise in turn, stir for 4h, then transfer the mixture to 25mL In a polytetrafluoroethylene-lined high-pressure reactor, react at 80°C for 4h, after cooling, centrifuge, wash with distilled water and ethanol three times in turn, and dry in a vacuum oven at 60°C for 12h to obtain cuprous oxide nanoparticles;
[0033] (2) Add cuprous oxide nanoparticles obtained in step (1) to 0.2M cobalt nitrate solution, add 5g / L polyvinylpyrrolidone and 0.25M sodium hydroxide solution successively, and transfer the mixture to 25mL polytetrafluoroethylene In an ethylene-lined autoclave, react at 160°C for 36h. After cooling, centrifuge, wash with distilled water and ethanol three times in turn, and dry in a vacuum oven at 60°C for 12h to obtain a cuprous oxide-cobalt trioxide core-shell material.
[0034] The cuprous oxide-cobalt tetroxide...
Embodiment 2
[0036] (1) 3.0M sodium hydroxide solution is joined in the copper nitrate solution of 2.0M, add 1.5g / L polyvinylpyrrolidone and 1M glucose successively, the drip rate of glucose solution is every three seconds one drop, after stirring 3h, will The mixture was transferred to a 25 mL polytetrafluoroethylene-lined autoclave, reacted at 60 °C for 3 h, cooled, centrifuged, washed with distilled water and ethanol three times in turn, and dried in a vacuum oven at 60 °C for 12 h to obtain oxidized Cuprous nanoparticles;
[0037] (2) Add cuprous oxide nanoparticles obtained in step (1) to 0.2M cobalt nitrate solution, add 0.25M sodium hydroxide solution and 8g / L polyvinylpyrrolidone successively, and transfer the mixture to 25mL polytetrafluoroethylene In an ethylene-lined autoclave, react at 150 °C for 36 h, after cooling, centrifuge, wash with distilled water and ethanol three times in sequence, and dry in a vacuum oven at 60 °C for 12 h to obtain a cuprous oxide-cobalt trioxide cor...
Embodiment 3
[0040](1) Add 2.5M sodium hydroxide solution to 1M copper nitrate solution, add 1.0g / L polyvinylpyrrolidone and 1M glucose in turn, after stirring for 2h, transfer the mixture to a 25mL high-pressure polytetrafluoroethylene-lined In the reaction kettle, react at 50°C for 4h, after cooling, centrifuge, wash with distilled water and ethanol three times in turn, and dry in a vacuum oven at 60°C for 12h to obtain cuprous oxide nanoparticles;
[0041] (2) Add cuprous oxide nanoparticles obtained in step (1) to 0.2M cobalt nitrate solution, add 0.25M sodium hydroxide solution and 2g / L polyvinylpyrrolidone successively, and transfer the mixture to 25mL polytetrafluoroethylene In an ethylene-lined autoclave, react at 150 °C for 24 h. After cooling, centrifuge, wash with distilled water and ethanol three times in sequence, and dry in a vacuum oven at 60 °C for 12 h to obtain a cuprous oxide-cobalt trioxide core-shell material.
[0042] The cuprous oxide-cobalt tetroxide core-shell mate...
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