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摘要
采用电沉积法在硫酸铜加乳酸的体系下制备氧化亚铜（Cu2O）薄膜催化剂，通过不同电极基底探究了其空间结构及化学组成对电催化反应性能的影响。在此基础上，利用泡沫铜三维多孔结构及Cu-Cu2O协同作用制备了Cu2O薄膜催化电极（Cu-foam@Cu2O-film），提高Cu2O对醇类产物的选择性和催化剂稳定性。结果表明，在0.5 mol/L KHCO3电解液及-0.9 V vs.Ag/AgCl电位下，醇类总法拉第效率为33.2%，相比于传统碳纸基底电极（Carbon@Cu2O-film）提高了近3倍。
Abstract
Cuprous oxide (Cu2O) film catalyst is prepared via electrodeposition method under copper sulfate/lactic acid system.The influences of the space structure and chemical composition of the electrode on electrocatalysis reaction performance are revealed through the comparison of different electrode substrates.On this base, Cu2O film catalytic electrode (Cu-foam@Cu2O-film) is prepared by means of three dimensional porous structure of foam copper and synergistic effect of Cu-Cu2O, in order to improve the selectivity of Cu2O on alcoholic products and the stability of the catalyst.It is indicated that at -0.9 V vs.Ag/AgCl in 0.5 mol·L-1 KHCO3 electrolyte, the Faradaic efficiency of methanol and ethanol is 33.2%, nearly triple that over traditional carbon paper substrate electrode.
关键词
氧化亚铜
/
乙醇
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甲醇
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二氧化碳
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催化
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电化学
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电沉积法
Key words
cuprous oxide
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ethanol
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methanol
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carbon dioxide
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catalysis
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electrochemistry
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electrodeposition
Author summay
雷涛宁(1997-),男,硕士生,研究方向为电催化二氧化碳还原,lemon4@sjtu.edu.cn
电沉积法制备Cu2O催化CO2制醇类燃料的研究[J].
现代化工, 2024, 44(2): 191-198 DOI:10.16606/j.cnki.issn0253-4320.2024.02.035
