Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 394, Issue -, Pages 434-440Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.12.005
Keywords
Self-assembly; Dyes; Magnetic microspheres; Photocatalyst; Visible light
Categories
Funding
- 973 Program [2011CB932504, 2007CB815303]
- NSFC [20731005, 20821061, 21101155, 91022007]
- Fujian Key Laboratory of Nanomaterials [2006120005]
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(PW12-TH)(n) multilayer films (PW12 = PW12O403-, TH = thionine) were deposited successfully on core-shell structured Fe3O4@SiO2 magnetic microspheres through layer-by-layer (LbL) self-assembly method. The physical and photocatalytic properties of such magnetic microspheres coated with (PW12-TH)(n) films have been characterized by SEM, FTIR, and UV-vis spectra. The microspheres exhibit better photocatalytic activity toward the degradation of methyl orange (MO) under visible light irradiation than the quartz slides support. In addition, the use of magnetic support guarantees facile, clean, fast, and efficient separation of the photocatalyst after the degradation of MO. Such catalysts can be reused several times and display good reproducibility by magnetic separation. (C) 2012 Elsevier Inc. All rights reserved.
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