文献类型：期刊文献

英文题名：Electro-initiated co-precipitation for synthesis of copper-based powder catalysts

作者：Gu, Haoyuan[1];Dong, Shengbin[1];Tian, Pengfei[2];Guo, Jiancheng[1];Xuan, Fu-Zhen[2];Zhu, Minghui[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

年份：2026

卷号：326

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20260620029005);WOS:【SCI-EXPANDED(收录号:WOS:001688185500001)】；

基金：This work was supported by the National Natural Science Foundation of China (22578125, 22078089) , Shanghai Pilot Program for Basic Research (22TQ1400100-7) , the Basic Research Program of Science and Technology Commission of Shanghai Municipality (22JC1400600) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Cu-based catalyst; Electrochemical synthesis; CO oxidation; Cerium; Morphology

摘要：Copper-based catalysts are extensively utilized in heterogeneous catalysis due to their cost-effectiveness and superior activity. However, their industrial production predominantly relies on conventional precipitation or impregnation methods, which inevitably generate substantial liquid and gaseous waste. Furthermore, these routes typically depend on nitrate precursors, where the production involves dissolving metals in strong acids, creating significant upstream environmental burdens. To address these issues, this work presents a facile and environmentally friendly electrochemical synthesis strategy. In this approach, a Cu mesh acts as the in-situ Cu2+ source, while OH-generated from the hydrogen evolution reaction serves as the precipitating agent. Furthermore, by adding sodium citrate to the electrolyte, we can control the morphology of the catalyst, and by replacing the metal cations in the nitrate electrolyte, we can control the composition of the catalyst. Notably, a copper-cerium mixed oxide synthesized with 0.1 M cerium nitrate and 0.01 M sodium citrate delivers exceptional performance in CO oxidation, achieving a T60 of 78 degrees C and a T90 of 92 degrees C. This enhanced activity is attributed to a unique dispersed nanosheet morphology that promotes the formation of Cu-Ce solid solutions and oxygen vacancies. Consequently, this green synthesis protocol holds great promise for sustainable industrial catalyst manufacturing.