Facile fabrication of Cu single atoms by utilizing nano-constrained environmentOA
Single-atom catalysts(SACs)exhibit exceptional catalytic activity across various processes due to their optimal utilization of metal sites at the atomic level.However,how to produce the SACs simply and efficiently remains a major challenge.Here,we present a convenient method for creating SACs by utilizing the nano-constrained environment between the silica walls and template in template-occupied mesoporous silica KIT-6(TOK).Following the introduction of Cu precursors to the nano-constrained environment of the TOK via grinding,Cu SACs can be efficiently generated during the calcination process.Individual Cu atoms form a covalent Cu-O-Si structure in the TOK,as evidenced by density functional theory(DFT)simulations and empirical data.In the CO_(2)cycloaddition of epichlorohydrin,the yield over CuTOK was 91.7%,which was significantly higher than that of the Cu catalysts synthesized without a nano-constrained environment(58.3%).In addition,the turnover frequency(TOF)over CuTOK was 127.3 h^(-1),which was much higher than the TOF over various Cu-containing catalysts.
Xiao-Qin Zheng;Yang Wang;Le-Ping Gao;Kai Zhang;Yang Liu;Xiang-Bin Shao;Song-Song Peng;Lin-Bing Sun
State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,ChinaState Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing,211816,China College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,China
化学化工
CopperSingle-atom catalystsNano-constrained environmentCO_(2)cycloaddition
《Green Chemical Engineering》 2026 (3)
P.336-342,7
National Science Fund for Distinguished Young Scholars(22125804)the National Natural Science Foundation of China(U24A20534)for their financial support of this work。
评论