Ag2Se-Graphene/TiO2 Nanocomposites, Sonochemical Synthesis and Enhanced Photocatalytic Properties Under Visible Light

被引：21

作者：

Meng, Ze-Da ^{[1
]}

Zhu, Lei ^{[1
]}

Ghosh, Trisha ^{[1
]}

Park, Chong-Yeon ^{[1
]}

Ullah, Kefayat ^{[1
]}

Nikam, Vikram ^{[1
]}

Oh, Won-Chun ^{[1
]}

机构：

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

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2012年 / 33卷 / 11期

关键词：

Ag2Se; Graphene; UV-vis absorption spectra; Visible light; Rhodamine B; GRAPHENE-OXIDE; TIO2-GRAPHENE NANOCOMPOSITES; TIO2; REDUCTION; COMPOSITE; ENERGY; NANOPARTICLES; DEGRADATION; TRANSPORT; LAYER;

D O I：

10.5012/bkcs.2012.33.11.3761

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ag2Se-Graphene/TiO2 composite was synthesized by a facile sonochemical method. The as-prepared products were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectrophotometer. During the reaction, both of the reduction of graphene oxide and loading of Ag2Se and TiO2 particles were achieved. The as-prepared Ag2Se-Graphene/TiO2 composites possessed great adsorptivity of dyes, extended light absorption range, and efficient charge separation properties simultaneously. Hence, in the photodegradation of rhodamine B (Rh.B), a significant enhancement in the reaction rate was observed with Ag2Se-Graphene/TiO2 composites, compared to the pure TiO2. The high activity can be attributed to the synergetic effects of high charge mobility, and red shift in absorption edge of Ag2Se-Graphene/TiO2 composites.

引用

页码：3761 / 3766

页数：6

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