Self-assembly of polyoxometalate-thionine multilayer films on magnetic microspheres as photocatalyst for methyl orange degradation under visible light irradiation

被引：18

作者：

Li, Hongfang ^{[1
]}

Gao, Shuiying ^{[1
]}

Cao, Minna ^{[1
]}

Cao, Rong ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 394卷

关键词：

Self-assembly; Dyes; Magnetic microspheres; Photocatalyst; Visible light; DYE-SENSITIZED TIO2; SEMICONDUCTOR PHOTOCATALYSIS; EFFICIENT DEGRADATION; IN-SITU; OXIDATION; PHOTOCHEMISTRY; WATER; NANOPARTICLES; SPECTROSCOPY; SYSTEM;

D O I：

10.1016/j.jcis.2012.12.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

(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.

引用

页码：434 / 440

页数：7

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