Cl掺杂CuO在Cu+和O空位协同作用下高效电催化还原CO2为C2H4

Efficient electrocatalytic reduction of CO2 to ethylene over chlorine-doped CuO catalyst under synergistic effect of Cu+and O vacancies

樊成 ¹沈斌浩 ¹王逸菲 ²文建军 ¹杨淑清¹

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作者信息

1. 浙江海洋大学石油化工与环境学院,浙江舟山 316022
2. 浙江海洋大学外国语学院,浙江舟山 316022
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摘要

通过简单的一步水热合成法合成具有富集Cu+和氧空位活性位点的氯掺杂氧化铜催化剂(Cl-CuO),并通过调节氯元素的掺杂量使得Cu基催化剂对乙烯(C2H4)拥有较高的选择性和法拉第效率(FE).结果表明,在-1.2 V[针对可逆氢电极(RHE)]下,C2H4的最大法拉第效率为46.8％;并且在经过15 h电解后,法拉第效率和电流密度无明显下降.Cl-CuO中C2H4的生成归因于Cu+与氧空位的协同作用.

Abstract

A chlorine-doped copper oxide catalyst(Cl-CuO)with enrichment of Cu+and oxygen vacancy active sites is synthesized via a simple one-step hydrothermal synthesis method.By adjusting the doping amount of chlorine,Cl-CuO catalyst obtains high selectivity and Faraday efficiency(FE)for ethylene.Results show that at-1.2 V(for a reversible hydrogen electrode),ethylene has a maximum Faraday efficiency of 46.8％.After 15 h electrolysis,Faraday efficiency and current density have not decreased significantly.The formation of ethylene in Cl-CuO is attributed to the synergistic action of Cu+and oxygen vacancies.

关键词

电催化CO2还原/氯掺杂/氧化铜催化剂/乙烯/碳循环

Key words

electrocatalytic CO2 reduction/Cl-doped/CuO catalyst/ethylene/carbon cycle

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基金项目

浙江省自然科学基金资助项目(LQ21B030007)

出版年

2024

现代化工

中国化工信息中心

现代化工

CSTPCDCSCD北大核心

影响因子：0.553

ISSN：0253-4320

参考文献量1

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