孤立的Ni/Co双金属位点协同催化CO_(2)电还原  

Synergistically catalyzing electroreduction of CO_(2) by isolated Ni/Co diatomic active sites

作　　者：冯曼曼 方远鑫 程慧远 潘东伟 吴雪梅[1] 贺高红[1,2] FENG Man-man;FANG Yuan-xin;CHENG Hui-yuan;PAN Dong-wei;WU Xue-mei;HE Gao-hong(School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China;Panjin Industrial Technology Institute,Dalian University of Technology,Panjin 124221,China)

机构地区：[1]大连理工大学化工学院,辽宁大连116024 [2]大连理工大学盘锦产业技术研究院,辽宁盘锦124221

出　　处：《现代化工》2022年第3期92-97,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(21776034,22021005,U1663223);国家重点研究开发计划(2016YFB0101203,2019YFE0119200);MOST关键领域创新团队项目(2016RA4053);辽宁省教育厅项目(LT2015007);中央大学基础研究基金项目(DUT20LAB307,DUT21TD101);化学添加剂合成与分离辽宁省重点实验室项目(ZJKF2012)。

摘　　要：相邻活性位点间的协同作用可以促进催化活性,同时保持源自原子分散性质的高原子利用率,双金属位点催化剂正成为CO_(2)还原反应研究中的新领域。锚定在氮化碳上的原子级分散的Ni/Co双金属活性位点,可作为一种高效的CO_(2)电还原催化剂。该催化剂在-0.6~-1.1 V的宽电势范围内表现出优异的选择性(CO法拉第效率超过90%),并且在连续电解40 h后仍保持94%的初始选择性,显示出卓越的稳定性。The synergy between adjacent active sites can promote catalytic activity while maintaining high atomic utilization sourced from atomic dispersion properties.Bimetallic site catalyst is becoming a new item in studying CO_(2) electroreduction reaction.The isolated Ni-Co bimetal active sites anchored on carbon nitride can be used as an efficient catalyst for electroreduction of CO_(2).This catalyst exhibits excellent selectivity in a wide potential range from-0.6 to -1.1 V vs.RHE(CO Faraday efficiency exceeds 90%),and maintains an initial selectivity of 94%after 40 hours of continuous electrolysis,showing significant stability.This work provides a new perspective for advancing universal synthesis strategies to construct heteronuclear diatomic catalysts.

关 键 词：二氧化碳电还原 原子级催化剂 协同作用 活性位点 电化学氢泵反应器 

分 类 号：TQ150[化学工程—电化学工业]