Engineering Cu_(2)O/Cu/N-C interface to induce directional migration of charge for driving photocatalytic homo-coupling of terminal alkynes  

作　　者：Xiaoqin Yan Tianyi Xu Wenwen Zhan Yang Yang Yang Yu Jianjian Yi Xiaoxiao He Lei Yang Jianwei Zhao Liming Sun Xiguang Han 

机构地区：[1]Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials,Department of Chemistry,School of Chemistry&Materials Science,Jiangsu Normal University,Xuzhou 221116,China [2]State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China [3]College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225009,China [4]Shenzhen HUASUAN Technology Co.,Ltd,Shenzhen 518055,China

出　　处：《Nano Research》2024年第8期6895-6902,共8页纳米研究（英文版）

基　　金：supported by the Xuzhou Key Research and Development Program(Social Development)(No.KC23298);the National Natural Science Foundation of China(No.22271122);the Natural Science Foundation of Jiangsu Province(No.BK20211549);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX23_2903).

摘　　要：The efficient utilization of visible light catalysts for organic reactions necessitates not only the effective separation of photogenerated electrons and holes to participate in the reaction,but also their ability to form key intermediates with reactant molecules.The present study successfully synthesized a crusiform-like mesoporous structure of nitrogen-doped carbon-coated Cu_(2)O/Cu(Cu_(2)O/Cu/N-C)with a Cu_(2)O/dual electron acceptor interface using etched HKUST-1 as the precursor.A series of theoretical and experimental studies have demonstrated that the Cu_(2)O/Cu/N-C interface in the photocatalytic homo-coupling of terminal alkynes not only effectively enhances the separation of photogenerated electron−hole pairs,but also facilitates the formation of the key intermediate[Cu_(2)O/Cu/N-C]-phenylacetylide and promotes the rearrangement of its internal charges.As a result,the homo-coupling reaction can be effectively facilitated.The primary reason for the functional role of Cu_(2)O/Cu/N-C interface lies in the downward bending of energy band from Cu_(2)O to N-doped C layers,induced by the different work functions of Cu_(2)O,Cu and N-doped C layers.Consequently,Cu_(2)O/Cu/N-C photocatalysts demonstrate exceptional photocatalytic activity in the homo-coupling reaction of terminal alkynes under blue-light irradiation and air atmosphere.The present study presents a novel research methodology for the development of highly efficient visible light catalysts to facilitate organic reactions in future applications.

关 键 词：photocatalysis homo-coupling of terminal alkynes directional migration of charges heterojunction interface Cu_(2)O carbon coated 

分 类 号：O62[理学—有机化学]