Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1039-1044.doi: 10.1007/s40242-020-0166-3

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Visible-light-driven Hydroamination of Alkynes over a New Type of Activated Carbon Immobilized Cu2+ Photocatalyst

GU Xianmo1, MA Pengwei1, LIU Pei1, WANG Ruiyi1, LI Xincheng1,2, ZHENG Zhanfeng1,2   

  1. 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China;
    2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2020-06-02 Revised:2020-07-22 Online:2020-12-01 Published:2020-07-29
  • Contact: ZHENG Zhanfeng E-mail:zfzheng@sxicc.ac.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21773284, 21703276) and the Hundred Talents Program of the Chinese Academy of Sciences and Shanxi Province, China.

Abstract: A new type of activated carbon immobilized copper(Cu/AC) photocatalyst was prepared by a facile impregnation-adsorption method, where Cu2+ is chemically adsorbed by abundant oxygenated functional groups on large-surface-area activated carbon surface. Cu/AC exhibited good activity and selectivity to imine for the hydro-amination of alkynes at 60℃ under visible light irradiation. The reaction is initialized by the activation of alkynes molecules at Cu active sites with the aid of light as evidenced by the solid-state NMR and laser photolysis measurements and the control experiments. This strategy for catalyst design is potentially extended to the immobilization of other metal homogeneous catalysts for various heterogeneous catalytic systems.

Key words: Activated carbon, Copper, Hydroamination, Photocatalysis