Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1013-1016.doi: 10.1007/s40242-020-0229-5

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Photocatalytic Stille Cross-coupling on Gold/g-C3NNano-heterojunction

YU Qiuying, LIN Xiu, LI Xinhao, CHEN Jiesheng   

  1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • Received:2020-07-08 Revised:2020-08-13 Online:2020-12-01 Published:2020-12-03
  • Contact: LI Xinhao E-mail:xinhaoli@sjtu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21722103, 21931005, 21720102002, and 21673140), the Project of the Shanghai Science and Technology Committee, China(No.19JC1412600) and the Fund of the SJTU-MPI Partner Group.

Abstract: Heterogeneous catalysts have been developed for C-C coupling reactions, but stand low activity and always proceed under harsh conditions. Photocatalytic Stille cross-coupling reaction as a green catalytic method for C-C bond formation is of great interest for a wide range of scientists but still lacks stable and highly efficient catalysts. Herein, we have designed an Au nanoparticle-graphitic carbon nitride heterojunction as an outstanding photocatalyst for artificial photosynthesis in Stille cross-coupling reaction. The interface effect between metal and semiconductor makes electron rectify and prevents the recombination of electron-hole pairs. Moreover, the efficiency of Au nanoparticle catalysts could be adjusted by gold contents. Thus the turnover frequency(TOF) value reached the highest level of 788 h-1 over the optimal heterojunction catalyst. Most importantly, the C-C bond formation reaction has been proved to be carried out well under visible light irradiation, indicating the low-cost organic synthesis process. Further analysis confirmed the stability and general application of our heterogeneous Au nano-heterojunction catalyst.

Key words: Photocatalysis, Stille coupling reaction, Green chemistry, Interface effect