Facile synthesis and characterization of interface charge transfer heterojunction of Bi_2MoO_6 modified by Ag/AgCl photosensitive material with enhanced photocatalytic activity

摘要

In this study, Bi2MoO6/Ag/AgCl composite photocatalysts were successfully prepared by modifying Bi2MoO6 flower-like microspheres with Ag/AgCl to improve photocatalytic activity. The prepared photocatalysts were characterized by field emission scanning electron microscopy, transmission electron microscopy, energy dispersive spectrometer, X-ray photoelectron spectroscopy X-ray diffraction spectra, UV-vis diffuse reflectance spectra and Brunauer-Emmett-Teller. The photocatalytic efficiency of Bi2MoO6/Ag/AgCl was evaluated by the degradation of RB-19 dye. Results indicated that Bi2MoO6/Ag/AgCl photocatalyst exhibited higher photocatalytic activity than Bi2MoO6. Simultaneously, h(+) was confirmed to be the most important active species in degradation of RB-19 by free radical and hole trapping experiment, proposing a potential photocatalytic mechanism. (C) 2019 Elsevier B.V. All rights reserved.