文献类型：期刊文献

英文题名：Isolating Single Sn Atoms in CuO Mesocrystal to Form Ordered Atomic Interfaces: An Effective Strategy for Designing Highly Efficient Mesocrystal Catalysts

作者：Ji, Yongjun[1,2];Zhou, Hui[3];Liu, Shaomian[2];Kang, Ting[2];Zhang, Yu[4];Chen, Wenxing[5];Fu, Dongxing[6];Zhong, Ziyi[7,8];Xu, Guangwen[9];Gong, Xue-Qing[3];Su, Fabing[2,9]

机构：[1]Beijing Technol & Business Univ, Sch Light Ind, Beijing 100048, Peoples R China;[2]Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Ctr Computat Chem, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]CNPC Managers Training Inst, Inst Educ & Talent, Beijing 100096, Peoples R China;[5]Beijing Inst Technol, Sch Mat Sci & Engn, Energy & Catalysis Ctr, Beijing 100081, Peoples R China;[6]Gripm Res Inst Co Ltd, Beijing 101407, Peoples R China;[7]Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China;[8]GTIIT, Guangdong Prov Key Lab Mat & Technol Energy Conve, Shantou 515063, Guangdong, Peoples R China;[9]Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China

年份：2022

卷号：18

期号：46

外文期刊名：SMALL

收录：;EI(收录号：20223912806387);WOS:【SCI-EXPANDED(收录号:WOS:000859076300001)】；

基金：Y.J., H.Z., and S.L. contributed equally to this work. The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (nos. 21978299 and 21878301), Open Research Fund of State Key Laboratory of Multiphase Complex Systems (MPCS-2021-D-08), and GRINM Group (G12620213102035). Y.J. thanks the financial supports from the Research Foundation for Advanced Talents of Beijing Technology and Business University (no. 19008020159). Z.Z. thanks the financial support of Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion (MATEC), Guangdong Technion - Israel Institute of Technology and Guangdong Key discipline fund (2022) for this collaboration.

语种：英文

外文关键词：electron transfer; high-efficiency catalysts; metal oxide mesocrystals; ordered atomic interfaces; single atoms

摘要：Tuning the electronic structures of mesocrystals at the atomic level is an effective approach to obtaining unprecedented properties. Here, a lattice-confined strategy to obtain isolated single-site Sn atoms in CuO mesocrystals to improve catalytic performance is reported. The Sn/CuO mesocrystal composite (Sn/CuO MC) has ordered Sn-O-Cu atomic interfaces originated from the long-range ordering of the CuO mesocrystal itself. X-ray absorption fine structure measurements confirm that the positively charged Sn atoms can tune the electronic structure of the Cu atoms to some extent in Sn/CuO MC, quite different from that in the conventional single-atom Sn-modified CuO nanoparticles and nanoparticulate SnO2-modified CuO mesocrystal catalysts. When tested for the Si hydrochlorination reaction to produce trichlorosilane, Sn/CuO MC exhibits significantly better performances than the above two catalysts. Theoretical calculations further reveal the electronic modification to the active Cu component and the induced improvement in HCl adsorption, and thus enhance the catalytic performance. This work demonstrates how to design efficient metal oxide mesocrystal catalysts through an electronic structure modification approach.