Preparation and characterization of Ag-doped TiO2 nanomaterials and their photocatalytic reduction of Cr(VI) under visible light
Preparation and characterization of Ag-doped TiO2 nanomaterials and their photocatalytic reduction of Cr(VI) under visible light
复制标题
DOI：
10.1016/j.apsusc.2014.10.045
复制
发表时间：
2014-12-01
影响因子：
6.7
通讯作者：
Yang, H.
中科院分区：
文献类型：
--
作者：
Lei, X. F.;Xue, X. X.;Yang, H.
采用溶胶-凝胶法制备了Ag掺杂TiO 2纳米材料（Ag-TiO 2）。采用X射线衍射（XRD）、紫外-可见漫反射光谱（DRS）、X射线光致发光光谱（PL）、X射线光电子能谱（XPS）、热重-差热分析（TG-DTA）、傅里叶变换红外光谱（FT-IR）、透射电镜（TEM）、扫描电子显微镜（SEM）和氮吸附-脱附等温线。以Cr（VI）为模型化合物，在可见光照射下考察了其光催化活性。结果表明，Ag掺杂和煅烧温度对样品的微观结构和光催化活性有重要影响。在可见光照射下，400 ℃煅烧的Ag掺杂TiO 2样品的光催化活性高于其他样品。(C)2014爱思唯尔有限公司版权所有。
Ag-doped TiO2 nanomaterials (Ag-TiO2) were prepared by a sol-gel method. The structures of Ag-TiO2 nanomaterials were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), X-ray photoluminescence (PL) spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetry and differential thermal analysis (TG-DTA), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), scanning electron microscopy (SEM) and nitrogen adsorption-desorption isotherms. The photocatalytic activities were checked through the photocatalytic reduction of Cr(VI) as a model compound under visible light irradiation. The results showed that the Ag doping and the calcination temperature played an important role on the microstructure and photocatalytic activity of the samples. Ag-doped TiO2 samples calcinated at 400 degrees C exhibits higher photocatalytic activity than that of the other samples under visible light irradiation. (C) 2014 Elsevier B.V. All rights reserved.