Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (9): 1587-1595.DOI: 10.1016/S1872-2067(15)60938-X

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Tunable photocatalytic selectivity and stability of Ba-doped Ag3PO4 hollow nanosheets

Hongchao Yua,b, Haixiao Kanga, Zhengbo Jiaoa, Gongxuan Lüa, Yingpu Bia   

  1. a State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-03-30 Revised:2015-06-10 Online:2015-08-28 Published:2015-09-26
  • Supported by:

    The authors made equal contributions to this work. This work was supported by the Hundred Talents Program of the Chinese Academy of Sciences and the National Natural Science Foundation of China (21273255, 21303232).

Abstract:

A one-step cation exchange process has been applied for the first time to the fabrication of nanoporous Ba-doped Ag3PO4 hollow nanosheets using Ba3(PO4)2 as the starting material. The constituent-dependent changes in phase and morphology were investigated comprehensively to elucidate the nanosheet formation mechanism. The resultant Ba-doped Ag3PO4 hollow nanosheets exhibited much higher photocatalytic performance and photoconversion efficiency than Ag3PO4 cubes and spherical particles under visible light irradiation. More importantly, the photocatalyst exhibited unique preferential decomposition of methyl orange over rhodamine B and high photocatalytic stability under visible light irradiation.

Key words: Photocatalysis, Silver phosphate, Hollow nanosheet, Barium doping