期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 85, 期 -, 页码 255-265出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2015.05.028
关键词
Thin films; Photocatalyst; Sol-gel growth; Microstructure; Surface properties
资金
- Research Unit: Processes Materials and the Environment (URMPE)
- Ministry of Higher Education and Scientific Research, Algeria [PNR 8/U35/4754]
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. (C) 2015 Elsevier Ltd. All rights reserved.
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