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。

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.

樊成(2000-),男,本科生,研究方向为电催化二氧化碳还原,2857278966@qq.com;杨淑清(1974-),女,博士,副教授,研究方向为石油加工,通讯联系人,ysqjane@163.com。