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CeO 2 /Bi 2 WO 6 Heterostructured Microsphere with Excellent Visible‐light‐driven Photocatalytic Performance for Degradation of Tetracycline Hydrochloride
Author(s) -
Zhang Fengjun,
Zou Shuang,
Wang Tianye,
Shi Yuxi,
Liu Peng
Publication year - 2017
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.12747
Subject(s) - photocatalysis , tetracycline hydrochloride , rhodamine b , degradation (telecommunications) , materials science , heterojunction , visible spectrum , chemical engineering , microsphere , nuclear chemistry , nanotechnology , irradiation , tetracycline , catalysis , optoelectronics , chemistry , organic chemistry , telecommunications , biochemistry , computer science , engineering , antibiotics , physics , nuclear physics
CeO 2 /Bi 2 WO 6 heterostructured microsphere with excellent and stable photocatalytic activity for degradation tetracyclines was successfully synthesized via a facile solvothermal route. The photocatalytic experiments indicated that CeO 2 /Bi 2 WO 6 heterostructured microspheres exhibited enhanced photocatalytic activity compared to pure Bi 2 WO 6 in both the degradation of tetracycline hydrochloride ( TCH ) and rhodamine B (RhB) under visible‐light irradiation. The 1CeO 2 /2Bi 2 WO 6 exhibited the best photocatalytic activity for degradation of TCH , reaching 91% after 60 min reaction. The results suggested that the particular morphological conformation of the microspheres resulted in smaller size and more uniform morphology so as to increase the specific surface area. Meanwhile, the heterojunction was formed by coupling CeO 2 and Bi 2 WO 6 in the as‐prepared microspheres, so that the separation efficiency of photogenerated electrons and holes was dramatically improved and the lifetimes of charge carriers were prolonged. Hence, introduction of CeO 2 could significantly enhance the photocatalytic activity of CeO 2 /Bi 2 WO 6 heterostructured microspheres and facilitate the degradation of TCH . This work provided not only a principle method to synthesize CeO 2 /Bi 2 WO 6 with the excellent photocatalytic performance for actual produce, but also a excellent property of the photocatalyst for potential application in photocatalytic treatment of tetracyclines wastewater from pharmaceutical factory.