文献类型：期刊文献

英文题名：Co-MOF Nanosheets Etched by FeCl2 Solution for Enhanced Electrocatalytic Oxygen Evolution

作者：Zhang, Weijun[1,2];Li, Fen[1,2];Fu, Zhinan[3];Dai, Sheng[1,2];Pan, Fenghongkang[4];Li, Jinxia[1,2];Zhou, Lihui[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：36

期号：8

起止页码：4524

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20221812046817);WOS:【SCI-EXPANDED(收录号:WOS:000793737800030)】；

基金：The authors express thanks for the support from the Fundamental Research Funds for the Central Universities and the Shanghai Rising-Star Program (20QA1402400). Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：Oxygen - Electronic structure - Metals - Morphology - Metal ions - Ion exchange - Catalyst activity

摘要：The appearance of mixed-metal MOF materialswith abundant metal active sites, high porosity, large surface area,and, particularly, the synergistic effect between different metalswhich show prominent catalytic activity for oxygen evolutionreaction (OER) has motivated profound research. Most of therelated reports focus on the hydrothermal methods to prepare themixed-metal MOFs containing metal ions such as Co, Ni, and Cr,etc. In this work, we proposed a facile impregnation methodthrough an ion-exchange process to fabricate Fe-doped Co-BDCnanosheets (Fe@Co-BDC NSs) that represented significantenhancement for electrocatalytic OER. The tuning mechanism ofthe ion-exchange method was investigated by the morphologychange and electronic structure of Fe@Co-BDC NSs, whichshould be important for an efficient OER catalyst. The optimized Fe@Co-BDC NSs (5 mM, 60 min) exhibited a significantly loweroverpotential of 307 mV with a smaller Tafel slope of 34.1 mVmiddotdec-1, as compared with the pure Co-BDC NSs.