文献类型：期刊文献

英文题名：Accelerated proton transmission in metal-organic frameworks for the efficient reduction of CO2 in aqueous solutions

作者：Mao, Fangxin[1];Jin, Yan-Huan[2,3];Liu, Peng Fei[1];Yang, Pengfei[1];Zhang, Le[1];Chen, Luyang[1];Cao, Xiao-Ming[2,3];Gu, Jinlou[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Ctr Computat Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：7

期号：40

起止页码：23055

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20194307569322);WOS:【SCI-EXPANDED(收录号:WOS:000490983100025)】；

基金：This work was financially supported by National Natural Science Funds for Distinguished Young Scholar (51725201), International (Regional) Cooperation and Exchange Projects of the National Natural Science Foundation of China (51920105003), Innovation Program of Shanghai Municipal Education Commission (E00014), National Natural Science Foundation of China (21573068, 51902105, 51502092), Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), Shanghai Sailing Program (19YF1411600), China Postdoctoral Science Foundation Funded Project (2018M641938) and Natural Science Foundation of China (51372084), Natural Science Foundation of Shanghai (18ZR1408700), TP2015028 and the 111 Project (B14018). The authors also thank the crew of 1W1B beamline of Beijing Synchrotron Radiation Facility for the constructive assistance in the XAFS measurements and data analyses.

语种：英文

外文关键词：Crystalline materials - Electrocatalysts - X ray absorption spectroscopy - Iron compounds - Chlorine compounds - Electrolytic reduction - Organometallics

摘要：Metal-organic frameworks (MOFs) have exhibited huge potential in the field of CO2 electroreduction but highly stable and active ones are still scarce. This study reports a (5,10,15,20-tetrakis(4-carboxyphenyl)porphyrinato)-Fe(iii) chloride (FeTCPPCl) co-building UiO-66 electrocatalyst for CO2 reduction in an aqueous solution. In situ X-ray absorption spectroscopy (XAS) measurements characterized its robust structure under catalysis. The unique framework of UiO-66 provides the available proton facilitator for improving CO2 reduction activity on iron porphyrin, and a concerted proton-electron transfer (CPET) mechanism might be considered for the catalytic pathway, achieving the highest faradaic efficiency of nearly 100% at an overpotential of 450 mV for turning CO2 to CO in the reported MOFs.