Nano-sized Fe-metal catalyst on ZnO-SiO2: (photo-assisted deposition and impregnation) Synthesis routes and nanostructure characterization

被引：20
|
作者：
Mohamed, R. M. [1 ,2 ]
Al-Rayyani, M. A. [1 ]
Baeissa, E. S. [1 ]
Mkhalid, I. A. [1 ]
机构：
[1] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia
[2] CMRDI, Adv Mat Dept, Cairo, Egypt
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 24期
关键词：
Sol-gel technique; Visible photocatalyst; Waste water treatment; PHOTOCATALYTIC DEGRADATION; METHYLENE-BLUE; ZNO; SILICA;
D O I：
10.1016/j.jallcom.2011.03.098
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A nano-sized Fe metal on ZnO-SiO2 was synthesized using the photo-assisted deposition (PAD) and impregnation routes. The obtained samples were characterized by a series of techniques including X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy, N-2 adsorption, extended X-ray absorption fine structure (EXAFS), and transmission electron microscopy (TEM). Photocatalytic reactivity using Fe-ZnO-SiO2 catalysts under visible-light condition on the degradation of methylene blue dye was evaluated. The results of characterization reveal, a notable photocatalytic activity of PAD:Fe-ZnO-SiO2 which was about 9 and 12 times higher than that of Img:Fe-ZnO-SiO2 and ZnO-SiO2, respectively. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：6824 / 6828
页数：5
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