MOFs-derived copper@nitrogen-doped carbon composite for the selective electroreduction of CO2
作者单位：School of Chemistry and Chemical Engineering Institute of Materials Sciences and Engineering Anhui University of Technology College of Chemistry and Materials Science Key Laboratory of Functional Molecular Solids the Ministry of Education Anhui Normal University
会议名称：《中国化学会第十届全国无机化学学术会议》
会议日期：2019年
学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术]
关 键 词：Copper Nitrogen-doped carbon Composite catalysts Electroreduction Carbon dioxide
摘 要：Development of Cu-based complex electrocatalysts is more easily to achieve a high activity and selectivity for reducing CO to multi-carbon hydrocarbons, exploring the synergistic effect between Cu and other materials may help the design of high efficient catalysts. This paper reports an impact factor for synergistic effect between Cu and nitrogen doped carbon(NC) support by comparing CO reduction reaction(CO RR) performances on MOFs-derived Cu-NC catalysts obtained by calcining N-containing benzimidazole(BEN) modified Cu-BTC(1, 3, 5-benzenetricarboxylic acid) MOFs(BEN-Cu-BTC) at different temperatures. The characterization and experimental results indicate that high contents of pyrrolic-N and pyridinic-N doped carbon support formation at low annealing temperature can facilitate the C-product generation on Cu surface, with the faradaic efficiency for ethylene(11%) and ethanol(18%) achieving at-1.01 V(vs. reversible hydrogen electrode), while high contents of graphitic-N or N-free samples show a completely different features. This means that the catalytic activity on MOFs-derived Cu-NC catalyst can be controlled by N-types changes dominating of annealing temperatures, offering a new tack for designing highly selective complex catalysts.