文献类型：期刊文献

英文题名：Reaction pathways for the highly selective and durable electrochemical CO2 to CO conversion on ZnO supported Ag nanoparticles in KCl electrolyte

作者：Bhalothia, Dinesh[1];Lee, Da-Wei[2];Jhao, Guan-Ping[2];Liu, Hsiao-Yun[2];Jia, Yanyan[3,4];Dai, Sheng[3,4];Wang, Kuan-Wen[1,2];Chen, Tsan-Yao[1,5]

机构：[1]Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan;[2]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 32001, Taiwan;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[5]Natl Cheng Kung Univ, Hierarch Green Energy Mat Hi GEM Res Ctr, Tainan 70101, Taiwan

年份：2023

卷号：608

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20224312989224);WOS:【SCI-EXPANDED(收录号:WOS:000875147300002)】；

基金：The authors thank the Fundamental Research Funds for the Central Universities, the Shanghai Rising-star Program (20QA1402400), and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning. Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center. T.-Y. Chen and K.-W. Wang acknowedge the funding support from the Ministry of Science and Technology, Taiwan with the grant numbers MOST 109-2923-E-007-005-, MOST 109-3116-F-007-001-, MOST 1092112-M-007-030-MY3) and MOST 110-2221-E-008 -061 -MY3.

语种：英文

外文关键词：ZnO; Ag; Nanocatalysts; Electrochemical CO2 reduction (ECR); Faradaic efficiency (FE)

摘要：Electrochemical CO2 reduction (ECR) is a promising approach for recycling atmospheric CO2 into value-added fuels. However, due to the sluggish ECR, highly effective ctalysts are needed. ZnO supported Ag nanocatalyst (NC) ((ZnO)(3)@Ag) is developed for CO2 to CO conversion where the faradaic efficiency (FE) was similar to 95% in 0.5 M KCl at 1.1 V, and that progressively decreased in 0.1 M KCl (89.7%) and 0.1 M KHCO3 (84.6%). Besides, (ZnO)(3)@Ag NC exhibited unprecedented stability in 0.5 M KCl with only 6.3% decay after 8 h while 14% and 14.3% decay were observed in 0.1 M KCl and 0.1 M KHCO3, respectively. The cross-referencing results of materials analyses and in-situ X-ray absorption spectroscopy suggest that the high CO selectivity of (ZnO)(3)@Ag NC in KCl originates from the synergistic collaboration between ZnO and Ag, where, ZnO supplies electrons to Ag for adsorption/structural rearrangement of CO2 molecule and subsequent desorption of CO. On the other hand, the presence of CO32- ions in KHCO3 hinder the mass transportation (i.e. the adsorption) of CO2, resulting in the decrease in selectivity and stability. Hereby, this study will spark motivation for designing the highly selective and stable ECR catalysts and uncover the mechanistic aspects of ECR.