Photodegradation of rhodamine B and 4-chlorophenol using plasmonic photocatalyst of Ag-AgI/Fe3O4@SiO2 magnetic nanoparticle under visible light irradiation

被引：173

作者：

Guo, Jian-Feng

Ma, Bowen

Yin, Anyuan

Fan, Kangnian

Dai, Wei-Lin ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2011年 / 101卷 / 3-4期

基金：

上海市自然科学基金;

关键词：

Photocatalyst; Visible-light-driven; Plasmon resonance; Magnetic nanoparticle; Rhodamine B dye; 4-Chlorophenol; SEMICONDUCTOR PHOTOCATALYSIS; STRUCTURAL-PROPERTIES; TITANIUM-DIOXIDE; HIGHLY EFFICIENT; DEGRADATION; DESTRUCTION; FABRICATION; BACTERIA; AZODYES; WATER;

D O I：

10.1016/j.apcatb.2010.10.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

A new plasmonic photocatalyst of Ag-AgI/Fe3O4@SiO2 was prepared by deposition-precipitation and photoreduction method. The catalyst exhibited efficient photocatalytic activity for the degradation of rhodamine B dye and 4-chlorophenol under visible light irradiation. The degradation rate of rhodamine B and 4-chlorophenol over Ag-AgI/Fe3O4@SiO2 was about 10 times and 4.1 times faster than that of N-TiO2. respectively. The catalyst could be easily recovered due to its paramagnetic property. X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscope were used to characterize the catalyst. The specified photocatalytic reaction and the study of electron paramagnetic resonance verified that both the O-2(-center dot) and (OH)-O-center dot radicals were the main active species in this reaction. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：580 / 586

页数：7

共 32 条

[1]

Efficient hydrogen evolution from aqueous mixture of I- and acetonitrile using a merocyanine dye-sensitized Pt/TiO2 photocatalyst under visible light irradiation [J].