Constructing subtle grain boundaries on Au sheets for enhanced CO2 photoreduction

作     者：Xu Li Tingting Zheng Lan Zhang Songtao Zhao Yinuo Chen Miaojin Wei Chunyan Shang Jun Bao Jie Zeng Xu Li;Tingting Zheng;Lan Zhang;Songtao Zhao;Yinuo Chen;Miaojin Wei;Chunyan Shang;Jun Bao;Jie Zeng

作者机构：Hefei National Laboratory for Physical Sciences at the MicroscaleNational Synchrotron Radiation LaboratoryCAS Key Laboratory of Strongly-Coupled Quantum Matter PhysicsKey Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2020年第63卷第12期

页      面：1705-1710页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This work was supported by the National Science Fund for Distinguished Young Scholars(21925204) the National Natural Science Foundation of China(U19A2015,21673214,U1732272) the National Key Research and Development Program of China(2019YFA-0405600) the Key Research Program of Frontier Sciences of the CAS(QYZDB-SSW-SLH017) the Fundamental Research Funds for the Central Universities,the USTC Research Funds of the Double First-Class Initiative(YD2340002002) the Taishan Scholar Program of Shandong Province of China(tsqn201909122) the China Postdoctoral Science Foundation(2019TQ0300) This work was partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication 

主　　题：Au sheet grain boundary Ni(OH)2 nanosheet CO2 photoreduction 

摘      要：Photocatalytic reduction of CO2 into value-added products is a promising strategy for mitigating environmental and energy problems ***,we developed Au sheets with subtle grain boundaries on ultrathin Ni(OH)2 nanosheets as efficient photocatalysts for CO2 *** to mechanistic studies,grain boundaries on the Au sheets served as electron trapping sites which enabled the optimization of electron-hole ***,grain boundaries perturbed electron distribution,which assisted in stabilizing CO2^δ- and HCOO^* *** a result,the unique hybrid structure achieved a high rate of 75.2μmol g^-1h^-1 for CO2 *** work demonstrates the importance of defect engineering in designing active photocatalysts and also provides insight into development of related photo-energy conversion schemes.