Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (10): 1674-1681.DOI: 10.1016/S1872-2067(20)63581-1

• Articles • Previous Articles    

Pyroelectricity effect on photoactivating palladium nanoparticles in PbTiO3 for Suzuki coupling reaction

Jieya Wena, Lili Lingb, Yao Chena, Zhenfeng Biana   

  1. a The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China;
    b Shanghai University of Electric Power, Shanghai 201303, China
  • Received:2020-02-21 Revised:2020-03-25 Online:2020-10-18 Published:2020-08-15
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21876114, 21761142011, 51572174), Shanghai Government (19160712900), International Joint Laboratory on Resource Chemistry (IJLRC), and Ministry of Education of China (PCSIRT_IRT_16R49). Research is also supported by The Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and Shuguang Research Program of Shanghai Education Committee. Shanghai Engineering Research Center of Green Energy Chemical Engineering (18DZ2254200).

Abstract: Combining microwave radiation with photocatalytic systems is a promising method to inhibit photogenerated electron-hole recombination and enhance the photocatalytic reaction performance. In this study, we have designed Pd/PbTiO3 catalysts that can use both microwave fields and photocatalysis. Benefiting from the synergistic effect of microwave field and UV light, the PbTiO3 crystals convert thermal energy into electrical energy via the pyroelectricity effect, generating positive and negative charges (q+ and q-), while Pd nanoparticles significantly improve the quantum efficiency of the photocatalytic process. The composite catalyst significantly enhances the reaction rate and selectivity of the model Suzuki coupling reaction performed with bromobenzene. Microwave fields can directly act on chemical systems, promoting or changing various chemical reactions in unique ways.

Key words: Photocatalysis, Pyroelectricity, Microwave, Suzuki coupling reaction