Effect of Ag+ reduction on the photocatalytic activity of Ag-doped TiO2

被引：39
|
作者：
Elsellami, L. [1 ,2 ]
Dappozze, F. [2 ]
Houas, A. [1 ,3 ]
Guillard, C. [2 ]
机构：
[1] Univ Gabes, Unite Rech Catalyse & Mat Environm & Proc, URCMEP, UR11ES85, Gabes, Tunisia
[2] Univ Lyon 1, CNRS, UMR 5256, IRCELYON, Villeurbanne, France
[3] Al Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Chem, Riyadh 11623, Saudi Arabia
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2017年 / 109卷
关键词：
Ag-doped TiO2; Sol-gel method; Ag+ reduction; Photocatalytic activity; NANOTUBE ARRAYS; DEGRADATION; TITANIA; DEPOSITION; KINETICS; PATHWAY;
D O I：
10.1016/j.spmi.2017.05.043
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Ag-doped TiO2 nanomaterials (Ag TiO2) were prepared with different percentages (1%, 2%, and 4%) by a sol-gel method. This mixture was subsequently calcined at 600 degrees C. The structures of Ag TiO2 nanomaterials were characterized by X-ray diffraction (XRD), UV vis diffuse reflectance spectra (DRS) and transmission electron microscope (TEM). The evaluation of the photocatalytic activity was carried out using formic acid (FA) as a model of chemical pollutants in UV conditions. The results showed that the Ag-doping at different percentages played an important role in the microstructure and photocatalytic activity of the samples. The Ag-doped TiO2 sample at (1%) showed a photocatalytic activity about three times higher than that of P25 under UV light irradiation. Both the photocatalysis and the improvement of adsorption brought about more efficiency (1%) of Ag-doped TiO2 due to the reduction of Ag+. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：511 / 518
页数：8
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