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A Hierarchically Porous Hollow Structure of Layered Bi 2 TiO 4 F 2 for Efficient Photocatalysis
Author(s) -
Lei Shuijin,
Gao Xijie,
Cheng Di,
Fei Linfeng,
Lu Wei,
Zhou Jianliang,
Xiao Yanhe,
Cheng Baochang,
Wang Yu,
Huang Haitao
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601319
Subject(s) - photocatalysis , rhodamine b , methyl orange , chemistry , chemical engineering , porosity , nanotechnology , bismuth , visible spectrum , aurivillius , solvothermal synthesis , scanning electron microscope , catalysis , materials science , inorganic chemistry , composite material , optoelectronics , organic chemistry , engineering , dielectric , ferroelectricity
Research into bismuth compounds has been greatly stimulated by their extensive applications in photocatalysis, which is a promising technique for environmental decontamination. In this research, Bi 2 TiO 4 F 2 hierarchically porous hollow spheres are successfully prepared by a simple solvothermal method. The X‐ray powder diffraction pattern shows that the sample has an Aurivillius‐type layered perovskite structure. The electron microscopy analyses reveal that the obtained hierarchical hollow spheres have a porous surface composed of interlaced nanoplates. A mechanism for the formation and growth of the hollow spheres is proposed on the basis of time‐dependent evolution experiments. The band gap of the prepared Bi 2 TiO 4 F 2 sample is measured to be ca. 2.85 eV, and its photocatalytic activity and mechanisms are explored systematically. The results demonstrate that the product can serve as an effective catalyst for the degradation of rhodamine B and methyl orange through photocatalytic reactions under irradiation with UV light and can also be used in the visible‐light degradation of rhodamine B through the photosensitization process.