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Synthesis of Bi 2 WO 6 /Bi 2 O 3 Composite with Enhanced Photocatalytic Activity by a Facile One‐step Hydrothermal Synthesis Route
Author(s) -
Wang Tianye,
Zhang Fengjun,
Xiao Guosheng,
Zhong Shuang,
Lu Cong
Publication year - 2015
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12409
Subject(s) - photocatalysis , rhodamine b , materials science , hydrothermal circulation , scanning electron microscope , x ray photoelectron spectroscopy , hydrothermal synthesis , crystallite , visible spectrum , photoluminescence , diffuse reflectance infrared fourier transform , fourier transform infrared spectroscopy , nuclear chemistry , chemical engineering , catalysis , chemistry , composite material , organic chemistry , optoelectronics , engineering , metallurgy
In this study, the characterization and photocatalytic activity of Bi 2 WO 6 /Bi 2 O 3 under visible‐light irradiation was investigated in detail. The results suggested that Bi 2 WO 6 /Bi 2 O 3 can be synthesized by a facile one‐pot hydrothermal route using a super big 200 mL Teflon‐lined autoclave with optimal sodium oleate/Bi molar ratio of 1.25. Through the characterization of Bi 2 WO 6 /Bi 2 O 3 by X‐ray diffraction, scanning electron microscopy, X‐ray photoelectron spectroscopy, Fourier transform infrared, UV ‐vis diffuse reflectance spectra and Photoluminescence spectra, it was found that the as‐prepared composite possessed smaller crystallite size and higher visible‐light responsive than the pure Bi 2 WO 6 . Moreover, it was expected that the as‐prepared composites exhibited enhanced photocatalytic activity for the degradation of Rhodamine B under visible‐light irradiation, which could be ascribed to their improved light absorption property and the reduced recombination of the photogenerated electrons and holes during the photocatalytic reaction. In general, this study could provide a principle method to synthesize Bi 2 WO 6 /Bi 2 O 3 with enhanced photocatalytic activity by one‐step hydrothermal synthesis route for environmental purification.