A method for electroreduction of CO 2 Catalyst and preparation method thereof
A technology of CO2 and catalyst, which is applied in the field of electroreduction of CO2 catalyst and its preparation, which can solve the problems of easy aggregation of nanoparticles, low catalyst activity, and poor product selectivity, and achieve high catalytic activity, simple operation steps, and improved dispersion. Effect
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Embodiment 1
[0029] Preparation of Ni-supported Nitrogen-doped Carbon Catalyst with Nano-hollow Polyhedral Structure:
[0030]1) First prepare 100mL, 10.0mM Tris buffer solution, 50mL ZIF-8 dispersion (8.0mg mL -1 ) was poured into the obtained suspension, dispersed by ultrasound for 40 min, then 200 mg of dopamine hydrochloride and 100 mg of nickel nitrate hexahydrate were dissolved in the above MOFs suspension, stirred and reacted at room temperature for 24 h, after the reaction was completed, centrifuged and washed 3 times with deionized water and ethanol, respectively, Dry at 80°C to obtain the mixture.
[0031] 2) At 50mL min -1 Under the protection of Ar gas at the gas flow rate, the mixture prepared in step 1) was placed in a high-temperature tube furnace for calcination at 950°C for 2 hours to obtain 2 The nano-hollow polyhedral nickel-supported nitrogen-doped carbon catalyst is denoted as catalyst A.
Embodiment 2
[0037] Preparation of Ni-supported Nitrogen-doped Carbon Catalyst with Nano-hollow Polyhedral Structure:
[0038] 1) First prepare 50mL, 10.0mM Tris buffer solution, 50mL ZIF-8 dispersion (4.0mg mL -1 ) was poured into the obtained suspension, dispersed by ultrasound for 40 minutes, then 100 mg of dopamine hydrochloride and 50 mg of nickel nitrate hexahydrate were dissolved in the above MOFs suspension, stirred at room temperature for 24 hours, and after the reaction was completed, they were centrifuged and washed 3 times with deionized water and ethanol, respectively. Dry at 80°C to obtain the mixture.
[0039] 2) At 50mL min -1 Under the protection of Ar gas at the gas flow rate, the mixture prepared in step 1) was placed in a high-temperature tube furnace for calcination at 950°C for 2 hours to obtain 2 The nano-hollow polyhedral nickel-supported nitrogen-doped carbon catalyst, denoted as catalyst C.
Embodiment 3
[0044] Preparation of Ni-supported Nitrogen-doped Carbon Catalyst with Nano-hollow Polyhedral Structure:
[0045] 1) First prepare 100mL, 10.0mM Tris buffer solution, 50mL ZIF-8 dispersion (8.0mg mL -1 ) was poured into the obtained suspension, dispersed by ultrasound for 40 min, then 200 mg of dopamine hydrochloride and 100 mg of nickel nitrate hexahydrate were dissolved in the above MOFs suspension, stirred and reacted at room temperature for 24 h, after the reaction was completed, centrifuged and washed 3 times with deionized water and ethanol, respectively, Dry at 80°C to obtain the mixture.
[0046] 2) At 50mL min -1 Under the protection of Ar gas at the gas flow rate, the mixture prepared in step 1) was placed in a high-temperature tube furnace for calcination at 1000°C for 2 hours to obtain 2 The nano-hollow polyhedral nickel-supported nitrogen-doped carbon catalyst, denoted as catalyst E.
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Abstract
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