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Room Temperature Synthesis of BiOI/Bi 5 O 7 I p–n Heterojunction with Enhanced Photocatalytic Activity for 17α‐Ethynylestradiol
Author(s) -
Wang Shan,
Chen Yu,
Long Yanju,
Li Lingxin,
Wang Lulu,
Zhang Sifeng,
Jiang Fengzhi
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800923
Subject(s) - photocatalysis , heterojunction , x ray photoelectron spectroscopy , composite number , materials science , decomposition , degradation (telecommunications) , solvent , chemical engineering , nuclear chemistry , photochemistry , catalysis , composite material , chemistry , optoelectronics , organic chemistry , electronic engineering , engineering
A p‐n heterojunction photocatalyst BiOI/Bi 5 O 7 I has been synthesized via a mixed solvent method at room temperature. The physical and chemical properties of as‐prepared composites were characterized by XRD, SEM, TEM, XPS, UV‐vis DRS, BET and PL. The photocatalytic performance of BiOI/Bi 5 O 7 I composite was evaluated by the photocatalytic decomposition of 17α‐ethinylestradiol (EE2) under visible light irradiation. The results revealed that the BiOI/Bi 5 O 7 I composite showed enhanced photocatalytic activity compared to pure BiOI and pure Bi 5 O 7 I. The mass ratio of BiOI/Bi 5 O 7 I and effect of pH value for photocatalytic activity of BiOI/Bi 5 O 7 I composite were investigated. Moreover, the photocatalytic mechanism of the degradation process was thoroughly elucidated. The enhanced photocatalytic performance of the BiOI/Bi 5 O 7 I composite should be attributed to fabrication of BiOI/Bi 5 O 7 I p‐n heterojunction, which was responsible for efficient separation and transfer of electron‐hole pairs.