Low-coordination environment design of single Co atoms for efficient CO_(2) photoreduction  

作　　者：Zhentao Ma Qingyu Wang Limin Liu Rong-Ao Zhang Qichen Liu Peigen Liu Lihui Wu Chengyuan Liu Yu Bai Yida Zhang Haibin Pan Xusheng Zheng 

机构地区：[1]National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China [2]College of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,China [3]Experimental Center of Engineering and Material Science,University of Science and Technology of China,Hefei 230026,China

出　　处：《Nano Research》2024年第5期3745-3751,共7页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.1222508,U1932213);the Fundamental Research Funds for the Central Universities(No.WK2060000016);the USTC Research Funds of the Double First-Class Initiative(No.YD2310002005);the Youth Innovation Promotion Association CAS(No.2020454)。

摘　　要：Photocatalytic carbon dioxide(CO_(2))to carbon monoxide(CO)offers a promising way for both alleviating the greenhouse effect and meeting the industrial demand.Herein,we constructed a Co single-atom catalyst with intentional low-coordination environment design on porous ZnO(denoted as Co1/ZnO).Impressively,Co1/ZnO exhibited a remarkable activity with a CO yield rate of 22.25 mmol·g^(-1)·h^(-1) and a selectivity of 80.2%for CO_(2) photoreduction reactions under visible light.The incorporation of single Co atoms provided an additional photo-generated electron transfer channel,which suppressed the carrier recombination of photocatalysts.Moreover,the unsaturated Co active sites were capable to adsorb CO_(2) molecule spontaneously,thus facilitating the activation of CO_(2) molecule during CO_(2) reduction course.

关 键 词：photocatalytic CO_(2)reduction single atoms low-coordination CO_(2)adsorption electron transfer 

分 类 号：O64[理学—物理化学]