Photodegradation of RhB over YVO4/g-C3N4 composites under visible light irradiation

被引：45

作者：

Cai, Jun ^{[1
]}

He, Yiming ^{[1
]}

Wang, Xiaoxing ^{[1
]}

Zhang, Lihong ^{[1
]}

Dong, Lvzhuo ^{[2
]}

Lin, Hongjun ^{[3
]}

Zhao, Leihong ^{[2
]}

Yi, Xiaodong ^{[4
]}

Weng, Weizheng ^{[4
]}

Wan, Huilin ^{[4
]}

机构：

[1] Zhejiang Normal Univ, Dept Mat Phys, Jinhua 321004, Peoples R China

[2] Zhejiang Normal Univ, Zhejiang Key Lab React Chem Solid Surfaces, Inst Phys Chem, Jinhua 321004, Peoples R China

[3] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China

[4] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

RSC ADVANCES | 2013年 / 3卷 / 43期

基金：

中国国家自然科学基金;

关键词：

PHOTOCATALYTIC PROPERTIES; DEGRADATION; G-C3N4; HYBRID; WATER; TIO2;

D O I：

10.1039/c3ra43592j

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

A series of novel YVO4/g-C3N4 photocatalysts were prepared by a facile mixing and calcination method. The obtained composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, ultraviolet visible diffuse reflection spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy, and a photocurrent-time experiment. The rhodamine B dye was selected as a model pollutant to evaluate the photocatalytic activity of the as-prepared YVO4/g-C3N4 composite. It shows that the photocatalytic activity of g-C3N4 can be largely improved by the doping of YVO4. The optimal YVO4 content is determined to be 25.8 wt%; and the corresponding degradation rate is 2.34 h(-1), about 2.75 folds that of pure g-C3N4. A possible mechanism of YVO4 on the enhancement of visible light performance is proposed. It suggests that YVO4 plays a key role, which may lead to efficiently suppressing the recombination of photogenerated charge carriers, consequently, improving the visible light photoactivity.

引用

页码：20862 / 20868

页数：7

共 37 条

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