ZnO/WO3 nanostructure as an efficient visible light catalyst

被引：61
|
作者：
Sajjad, Ahmed Khan Leghari [2 ]
Sajjad, Shamaila [1 ]
Iqbal, Anum [1 ]
Ryma, Najam-ul-Athar [1 ]
机构：
[1] Int Islamic Univ, H-10, Islamabad, Pakistan
[2] Pakistan Inst Engn & Appl Sci, Islamabad, Pakistan
来源：
CERAMICS INTERNATIONAL | 2018年 / 44卷 / 08期
关键词：
Nanocomposite; Hydrothermal method; Photocatalysis; Methyl orange; Wet impregnation; PHOTOCATALYTIC ACTIVITY; TIO2; PHOTOCATALYST; TITANIUM-DIOXIDE; DOPED TITANIA; THIN-FILMS; WO3; SEMICONDUCTORS; DEGRADATION; OXIDATION; REDUCTION;
D O I：
10.1016/j.ceramint.2018.02.150
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：
Highly photosensitive ZnO/WO3 photocatalysts were fabricated by wet impregnation of zinc oxide (ZnO) in different contents. Tungsten trioxide (WO3) was synthesized by hydrothermal route. The presence of ZnO inhibited the crystallization of WO3 and caused agglomeration of WO3 nanoparticles surface. The formation of ZnO-W linkage was studied by X-ray photoelectron emission (XPS) and Fourier transforms Infra-red spectra (FTIR). These linkages were responsible for red shift of absorption peak of composites as compared to individual ZnO and WO3. The band gap was decreased due to incorporation of ZnO in WO3 which promoted the separation of photo-generated carriers. As a result, ZnO/WO3 composite showed extremely high efficiency for MO degradation in comparison with Degussa P25, pure ZnO and WO3. 2.0% ZnO/WO3 composite displayed the highest activity in photocatalytic decomposition of methyl orange (MO) dye.
引用
收藏
页码：9364 / 9371
页数：8
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