材料科学
光降解
光催化
罗丹明B
锐钛矿
掺杂剂
金红石
兴奋剂
微观结构
薄膜
化学工程
带隙
溶胶凝胶
纳米结构
分析化学(期刊)
纳米技术
光电子学
复合材料
催化作用
有机化学
化学
工程类
作者
F. Bensouici,T. Souier,A.A. Dakhel,A. Iratni,R. Tala-Ighil,M. Bououdina
标识
DOI:10.1016/j.spmi.2015.05.028
摘要
In this study, structure, microstructure, optical properties and photocatalytic degradation of Rhodamine B (RhB) have been investigated in an aqueous heterogeneous media containing pure and Ag doped TiO2 nanostructures thin films which were prepared by a simple sol–gel route. Thermal analysis demonstrated that Ag content decreased the temperature of anatase-to-rutile phase transformation. X-ray diffraction analysis confirmed that the prepared nanostructures crystallize within anatase-type structure and that the dopant Ag ions were not fully incorporated within TiO2 host lattice, meanwhile both the refractive index and optical band gap were affected by Ag concentration. The photodegradation of Rhodamine B under UV-C radiation by using pure and Ag-doped TiO2 nanostructures showed that Ag played an important role in a significant improvement of the photodegradation efficiency and that the optimum content of Ag ions was found to be 0.5% molar ratio.
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