Ternary magnetic g-C3N4/Fe3O4/AgI nanocomposites: Novel recyclable photocatalysts with enhanced activity in degradation of different pollutants under visible light

被引：85
作者：
Akhundi, Anise [1 ]
Habibi-Yangieh, Aziz [1 ]
机构：
[1] Univ Mohaghegh Ardabili, Dept Chem, Fac Sci, POB 179, Ardebil, Iran
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 174卷
关键词：
Composite materials; Semiconductors; Chemical synthesis; Electron microscopy; Magnetic properties; HIGHLY EFFICIENT; DRIVEN PHOTOCATALYSTS; FACILE FABRICATION; G-C3N4; COMPOSITE; HYDROGEN; HETEROJUNCTIONS; NANOPARTICLES; NANOSHEETS; CATALYSTS;
D O I：
10.1016/j.matchemphys.2016.02.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, we illustrate the preparation of graphitic carbon nitride/magnetite/silver iodide (g-C3N4/Fe3O4/AgI) nanocomposites, as novel magnetically recyclable visible-light-driven photocatalysts. The nanocomposites were prepared by reflux method at 96 degrees C with no require to any additives or post preparation treatments. The resultant samples were characterized using XRD, EDX, SEM, TEM, FT-IR, UV -vis DRS, PL, TGA, and VSM techniques. Among the nanocomposites, the sample with 20 percent of AgI displayed superior activity. This nanocomposite exhibited superparamagnetic property with a saturation magnetization of 16.9 emu/g. Photocatalytic activity of the g-C3N4/Fe3O4/Agl (20%) nanocomposite was about 8.7 and 6.9 fold higher than those of the g-C3N4 and g-C3N4/Fe3O4 samples, respectively for degradation of rhodamine B (RhB) under visible-light irradiation. Moreover, we investigated the influence of refluxing time, calcination temperature, and scavengers of the reactive species on the degradation activity. It was demonstrated that the ternary magnetic photocatalyst has considerable activity in degradation of two more dye pollutants. Besides, it was demonstrated that the ternary magnetic nanocomposite has reasonable stability during five recycling experiments. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：59 / 69
页数：11
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