Synthesis, Characterization, and Activity Evaluation of DyVO4/g-C3N4 Composites under Visible-Light Irradiation

被引：136

作者：

He, Yiming ^{[1
]}

Cai, Jun ^{[1
]}

Li, Tingting ^{[2
]}

Wu, Ying ^{[2
]}

Yi, Yanmin ^{[3
]}

Luo, Mengfei ^{[2
]}

Zhao, Leihong ^{[2
]}

机构：

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

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

[3] Ctr Stn Suzhou Environm Monitoring, Suzhou 215004, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 45期

基金：

中国国家自然科学基金;

关键词：

GRAPHITIC CARBON NITRIDE; PHOTOCATALYTIC DEGRADATION; TITANIUM-DIOXIDE; ELECTRONIC-STRUCTURE; WATER; TIO2; NANOCRYSTALS; PHOTOREACTIVITY; MORPHOLOGY; CONVERSION;

D O I：

10.1021/ie301774e

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

DyVO4/graphitic carbon nitride (DyVO4/g-C3N4) composite photocatalyst with visible-light response was prepared by a milling and heating treatment method. The synthesized powder was characterized by X-ray diffraction, thermogravimetry/differential thermal analysis, N-2 adsorption, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV-vis diffuse reflection spectroscopy. The activity of composite photocatalyst DyVO4/g-C3N4 for photodegradation of rhodamine B is much higher than that of either single-phase g-C3N4 or DyVO4. The obviously increased performance of DyVO4/g-C3N4 is mainly ascribed to the electron-hole separation enhancement at the interface of the two semiconductors, as proven by photoluminescence spectroscopy and photocurrent measurement In addition, it is found that holes and O-center dot(2)- are the main active species in the photocatalytic oxidation of RhB solution in the presence of DyVO4/g-C3N4 composite.

引用

页码：14729 / 14737

页数：9

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