文献类型：期刊文献

英文题名：Construction of Cu cocatalyst on TiO2 for regulating the selectivity of photocatalytic CO2 reduction

作者：Hu, Songchang[1];Deng, Zesheng[1];Xing, Mingyang[1];Wu, Shiqun[1];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China

年份：2022

卷号：48

期号：8

起止页码：3275

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;EI(收录号：20222812341168);WOS:【SCI-EXPANDED(收录号:WOS:000822472500001)】；

基金：This work was supported by National Natural Science Foundation of China (21972040217, 73062), Innovation Program of Shanghai Municipal Education Commission(2021-0107-00-02-E00106), the Science and Technology Commission of Shanghai Municipality (20DZ2250400), and Shanghai Sailing Program (22YF1410200).

语种：英文

外文关键词：Cu; Product selectivity; CO2 photoreduction; Cocatalyst; TiO2

摘要：Construction of efficient photocatalysts without noble metals for selective photoreduction of CO2 to CH4 remains a challenge. Herein, Cu cocatalyst modified TiO2 photocatalysts were successfully prepared by a convenient solvothermal method. The selectivity of photocatalytic CO2 reduction can be well regulated through valence state and loading amount of Cu. Cu (0) is beneficial to H-2 evolution, while high valence Cu contributes to higher CH4 selectivity. The loaded Cu cocatalyst promoted the separation of photogenerated electron-hole and served as the active site for CO2 photoreduction, significantly improving the photocatalytic activity of TiO2. The highest CH4 generation rate of 12.52 mu mol g(-1) h(-1) was achieved on 0.1CT with high CH4 selectivity of 96.9% toward carbon products, which is 397 times higher than pure TiO2 in terms of electrons involved in the reaction. The current work provides significant guidance for the construction of efficient photocatalysts for regulating product selectivity toward CO2 photoreduction. [GRAPHICS]