Hydrothermal Synthesis, Characterization and Improved Activity of a Visible-Light-Driven ZnSe-Sensitized TiO2 Composite Photocatalyst

被引：12

作者：

Zhu, Lei ^{[1
]}

Peng, Mei-Mei ^{[3
]}

Cho, Kwang Youn ^{[2
]}

Ye, Shu ^{[1
]}

Sarkar, Sourav ^{[1
]}

Ullah, Kefayat ^{[1
]}

Meng, Ze-Da ^{[1
]}

Oh, Won-Chun ^{[1
]}

机构：

[1] Hanseo Univ, Dept Adv Mat Sci & Engn, Chungnam 356706, South Korea

[2] Korea Inst Ceram Engn & Technol, Seoul 153801, South Korea

[3] Hanseo Univ, Chem Engn Dept, Seosan 360706, South Korea

来源：

JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2013年 / 50卷 / 06期

关键词：

TiO2; ZnSe; UV-vis; Hydrothermal; Visible light photocatalytic;

D O I：

10.4191/kcers.2013.50.6.504

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, ZnSe-TiO2 composites were synthesized by a facile hydrothermal-assisted sol-gel process and characterized by nitrogen adsorption isotherms (77 K), X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectrophotometry. The photocatalytic activity was investigated by decoloration methylene blue (MB), methyl orange (MO), and rhodamine B (Rh.B) in an aqueous solution under visible light irradiation. The results revealed that the photocatalytic activity of the ZnSe-TiO2 photocatalyst was much higher than that of pureTiO(2). The ZnSe nanoparticles, which act as a photosensitizer, not only extend the spectral response of TiO2 to the visible region but also reduce charge recombinations.

引用

页码：504 / 509

页数：6

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