Structure regulated catalytic performance of gold nanocluster-MOF nanocomposites  

作　　者：Yanfei Zhu Xueying Qiu Shenlong Zhao Jun Guo Xiaofei Zhang Wenshi Zhao Yanan Shi Zhiyong Tang 

机构地区：[1]CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,CAS Center for Excellence in Nanoscience,National Center for Nanoscience and Technology,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]School of Chemical and Biomolecular Engineering,The University of Sydney,Sydney,NSW 2006,Australia [4]School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Nano Research》2020年第7期1928-1932,共5页纳米研究（英文版）

基　　金：the National Key Basic Research Program of China(No.2016YFA0200700,Z.Y.T);the National Natural Science Foundation of China(Nos.21890381 and 21721002,Z.Y.T);Frontier Science Key Project of Chinese Academy of Sciences(No.QYZDJ-SSW-SLH038,Z.Y.T);K.C.Wong Education Foundation(Z.Y.T).

摘　　要：Atomically precise gold(Au)nanoclusters(NCs)as visible light photosensitizers supported on the substrate for photoredox catalysis have attracted considerable attentions.However,eficient control of their photocatalytic activity and long-term stability is still challenging.Herein,we report a coordination-assisted self-assembly strategy in combination with electrostatic interaction to sandwich Au2:(Capt)18(abbreviated as AU25,Capt=captopril)NCs between an inner core and an outer shell made of UiO-66,denoted as UiO-66@[e-mail],the sandwich-like nanocomposite displays significantly enhanced catalytic activity along with an excellent stability when used in the selective photocatalytic aerobic oxidation of sulfide to sulfoxide.As comparison,AU25 NCs simply located at the outer surface or insider matrix of UiO-66(short as Au2/UiO-66 and AU2s@UiO-66)show poor stability and low conversion,respectively.This structure regulated difference in the catalytic performances of three nanocomposites is assigned to the varied distribution of active sites(Au NCs)in metal-organic frameworks(MOFs).This work offers the opportunity for application of nanoclusters in catalysis,energy conversion and even biology.

关 键 词：Au nanoclusters metal-organic frameworks PHOTOCATALYSIS singlet oxygen SULFOXIDATION 

分 类 号：TB383[一般工业技术—材料科学与工程]