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Novel Bi 2 WO 6 ‐coupled Fe 3 O 4 Magnetic Photocatalysts: Preparation, Characterization and Photodegradation of Tetracycline Hydrochloride
Author(s) -
Wang Tianye,
Zhong Shuang,
Zou Shuang,
Jiang Fuhuan,
Feng Limin,
Su Xiaosi
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.12739
Subject(s) - photocatalysis , photodegradation , x ray photoelectron spectroscopy , materials science , tetracycline hydrochloride , diffuse reflectance infrared fourier transform , nuclear chemistry , dielectric spectroscopy , scanning electron microscope , magnetism , visible spectrum , transmission electron microscopy , chemical engineering , analytical chemistry (journal) , electrochemistry , nanotechnology , catalysis , tetracycline , chemistry , optoelectronics , organic chemistry , electrode , composite material , biochemistry , physics , antibiotics , quantum mechanics , engineering
Novel Bi 2 WO 6 ‐coupled Fe 3 O 4 magnetic photocatalysts with excellent and stable photocatalytic activity for degrading tetracycline hydrochloride and RhB were successfully synthesized via a facile solvothermal route. Through the characterization of the as‐prepared magnetic photocatalysts by X‐ray diffractometry, scanning electron microscopy, transmission electron microscopy, X‐ray photoelectron spectroscopy, UV–Vis diffuse reflectance spectra, it was found that the as‐prepared magnetic photocatalysts were synthesized by the coupling of Bi 2 WO 6 and Fe 3 O 4 , and introduction of appropriated Fe 3 O 4 can improve nanospheres morphology and visible‐light response. Among them, BFe2 (0.16% Fe 3 O 4 ) exhibited the best photocatalytic activity for degradation of tetracycline hydrochloride (TCH), reaching 81.53% after 90 min. Meanwhile, the as‐prepared magnetic photocatalysts showed great separation and recycle property. Moreover, the results of electrochemical impedance spectroscopy demonstrated that the well conductivity of Fe 3 O 4 can promote photogenerated charge carriers transfer and inhibit recombination of electron–hole pairs, so that Bi 2 WO 6 /Fe 3 O 4 exhibited enhanced photocatalytic activity on degradation of TCH and RhB. Hence, this work provides a principle method to synthesize Bi 2 WO 6 /Fe 3 O 4 with excellent photocatalytic performance for actual application, in addition, it showed that introduction of Fe 3 O 4 not only can provide magnetism, but also can enhance photocatalytic activity of Bi 2 WO 6 /Fe 3 O 4 magnetic photocatalysts.