Catalytic hydrogenation performance of ZIF-8 carbide for electrochemical reduction of carbon dioxide

查看全文 作　　者：Shuai [1]Fan;Huiyuan [1]Cheng;Manman [1]Feng;Xuemei [1]Wu;Zihao [1]Fan;Dongwei [1]Pan;Gaohong [1]He

机构地区：[1]State Key Laboratory of Fine Chemicals,Research and Development Center of Membrane Science and Technology,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Chinese Journal of Chemical Engineering》索引2021年第34卷第11期,共10页

基　　金：the National Natural Science Foundation of China(Joint Fund U1663223 and 21776034);Science Fund for Creative Research Groups of the National Natural Science Foundation of China(22021005);the National Key Research and Development Program of China(2016YFB0101203);Educational Department of Liaoning Province of China(LT2015007);Fundamental Research Funds for the Central Universities(DUT16TD19);the Changjiang Scholar Program(T2012049). 摘　　要：The conversion of CO_(2) electrocatalytic hydrogenation into energy-rich fuel is considered to be the most effective way to carbon recycle.Nitrogen-doping carbonized ZIF-8 is proposed as carrier of the earth-rich Sn catalyst to overcome the limit of electron transfer and CO_(2) adsorption capacity of Sn.Hierarchically porous structure of Sn doped carbonized ZIF-8 is controlled by hydrothermal and carbonization conditions,which induces much higher specific surface area than that of the commercial Sn nanoparticle(1003.174 vs.7.410 m^(2)·g^(-1)).The shift of nitrogen peaks in X-ray Photoelectron Spectroscopy spectra indicates interaction between ZIF-8 and Sn,which induces the shift of electron cloud from Sn to the chemical nitrogen to enhance conductivity and regulate electron transfer from catalyst to CO_(2).Lower mass transfer resistance and Warburg resistance are investigated through EIS,which significantly improves the catalytic activity for CO_(2) reduction reaction(CO_(2)RR).Onset potential of the reaction is reduced from-0.74 V to less than-0.54 V vs.RHE.The total Faraday efficiency of HCOOH and CO reaches 68.9%at-1.14 V vs.RHE,which is much higher than that of the commercial Sn(45.0%)and some other Sn-based catalyst reported in the literature. 关键词：Carbon dioxide ELECTROCHEMISTRY Selective catalytic reduction Electrochemical hydrogen pump Nitrogen-doping carbonized ZIF-8

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Catalytic hydrogenation performance of ZIF-8 carbide for electrochemical reduction of carbon dioxide

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