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Visible Light Photocatalytic Activity of Bismuth Ferrites Tuned by Bi/Fe Ratio
Author(s) -
Wang Huanchun,
Xu Haomin,
Zeng Chengcheng,
Shen Yang,
Lin YuanHua,
Nan CeWen
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14113
Subject(s) - photocatalysis , materials science , hydrothermal circulation , bismuth , perovskite (structure) , morphology (biology) , phase (matter) , chemical engineering , degradation (telecommunications) , ion , solid solution , catalysis , metallurgy , chemistry , organic chemistry , biology , computer science , telecommunications , engineering , genetics
Pure perovskite BiFeO 3 , sillenite Bi 2 Fe 4 O 9 , and BiFeO 3 / Bi 2 Fe 4 O 9 were synthesized facilely by controlling the precursor Bi / Fe ion ratio through a hydrothermal method. The phase composition, morphology, optical properties, and photocatalytic activity of as‐prepared samples were investigated in detail. Our results indicate that the morphology and properties of products strongly dependent on the precursor Bi/Fe ion ratio. Photocatalysis of Congo Red reveals that sillenite Bi 2 Fe 4 O 9 shows superior activity to perovskite BiFeO 3 , and BiFeO 3 / Bi 2 Fe 4 O 9 exhibited higher activity with 71.45% degradation rate in 90 min. It provides an easy and efficient way to tune the composition and photocatalytic activity of Bi‐based oxides.