作为高效水氧化催化剂的多面体Cu2S块状晶体溶剂热合成  

Solvothermal Syntheis of Polyhedral Cu2S Bulk Crystals as an Efficient Catalyst for Water Oxidation

作　　者：魏聪聪 钟达忠 李丹丹 王强[1] 郭文君 郝根彦[1] 赵强[1] WEI Congcong;ZHONG Dazhong;LI Dandan;WANG Qiang;GUO Wenjun;HAO Genyan;ZHAO Qiang(Research Institute of Special Chemicals, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan 030024,China)

机构地区：[1]太原理工大学精细化工研究所气体能源高效清洁利用山西省重点实验室

出　　处：《太原理工大学学报》2019年第4期421-429,共9页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(21878202,21476153);山西省回国留学人员科研资助项目(2017-041);山西省自然科学基金资助项目(201801D121052)

摘　　要：以泡沫铜(CF)、硫代乙酰胺(TAA)为铜源和硫源,乙醇胺(en)为络合剂,乙醇为溶剂,在溶剂热的条件下,Cu^2+和en形成的[Cu(en) 2]^2+金属络合物,与溶液中的S^2-反应得到不稳定的无机-有机Cu2S-TAA前驱体。由其作为分子模板控制晶体的生长,制备了生长于泡沫铜基底上的Cu2S十四面体,将其作为高效的水氧化催化剂对Cu2S催化剂的阳极析氧电化学性能进行测试。结果表明:在1 mmol/L KOH电解液中,当电流密度为20 mA/cm^2时,过电位为200 mV,并且可以保持长达30 h的持久稳定性。Foam copper (CF) and thioacetamide (TAA) were used as copper source and sulfur source respectively, ethanolamine (en) was used as complexant, and ethanol was used as solvent. Under solvothermal conditions, the [Cu(en) 2]^ 2+ metal complex formed by Cu^2+ and ethanolamine reacted with S^2- in solution to obtain an unstable inorganic-organic Cu 2S-TAA precursor, which was used as a molecular template to control the growth of crystals. Finally, Cu 2S tetradecahedron grown on the copper foam was prepared, which can be used as a highly efficient water oxidation catalyst. The anodic oxygen evolution electrochemical performance test of the catalyst showed that in 1 mmol/L KOH electrolyte, when current density was 20 mA/cm 2, overpotential was 200 mV, and the long-term stability for up to 30 hours was maintained.

关 键 词：Cu2S 溶剂热法 晶体生长 水氧化 阳极析氧反应 

分 类 号：TQ151.1[化学工程—电化学工业]