文献类型：期刊文献

英文题名：Reconstructed PbCO3 with abundant oxygen vacancies for efficient CO2-to-formate electrocatalysis

作者：Wang, Huan[1];Zhao, Jia Yue[1];Yang, Qian Qian[1];Wu, Jia Chen[1];Zhang, Xin Yu[1];Yuan, Hai Yang[1];Xu, Xiao Lei[2];He, Jing Jing[2];Niu, Qiang[2];Liu, Peng Fei[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Minist Educ,Key Lab Ultrafine Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Inner Mongolia Erdos Elect Power & Met Grp Co Ltd, Natl Enterprise Technol Ctr, Ordos 016064, Inner Mongolia, Peoples R China

年份：2024

卷号：12

期号：32

起止页码：21406

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20243016769645);WOS:【SCI-EXPANDED(收录号:WOS:001274583100001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22376062, 51920105003 and 22309053), the Shanghai Pilot Program for Basic Research (22TQ1400100-12), the Science and Technology Commission of Shanghai Municipality (21DZ1207101, 22ZR1416400 and 23YF1408500), the Major Science and Technology Projects of Inner Mongolia Autonomous Region (2021ZD0042) and the Fundamental Research Funds for the Central Universities. The authors also thank the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF) and the 1W1B beamline of the Beijing Synchrotron Radiation Facility (BSRF) for their constructive assistance with the XAFS measurements and data analyses. The authors also thank Jiaxing Puxiang Technology Co. Ltd for the helpful test and discussion of in situ ATR-SEIRAS results.

语种：英文

外文关键词：Absorption spectroscopy - Carbon dioxide - Electrocatalysis - Electron spin resonance spectroscopy - Energy policy - Global warming - Lead compounds - Light absorption - Paramagnetic resonance - X ray absorption - X ray absorption near edge structure spectroscopy - X ray photoelectron spectroscopy

摘要：The electrosynthesis of valuable chemical feedstocks and fuels through the CO2 reduction reaction (CO2RR) provides a promising approach to solve the global warming problem and the energy crisis. Numerous studies have been devoted to developing electrocatalysts; however, few studies focus on Pb actives sites as well as the defect engineering of active sites. Herein, an O vacancy-rich PbCO3 electrocatalyst (O-PbCO3) derived Pb-2(OH)(2)(CH3COO)(2) precatalyst is reported. X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) results prove the existence of O vacancies while the X-ray absorption fine structure (XAFS) results reveal the distorted structure of the O-PbCO3. Electrochemical measurements of the O-PbCO3 sample exhibit a remarkable selectivity and activity towards formate of over 90% in a wide range of current densities of 50 to 400 mA cm(-2). Further in situ surface-enhanced infrared absorption spectroscopy (SEIRAS) characterization indicates that the O vacancies can optimize the adsorption of the *HCOO intermediate for enhanced CO2RR performance.