Affiliation:
1. Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Janiszewskiego 11/17, 50-372 Wroclaw , Poland
Abstract
Abstract
In this paper, structural and photocatalytic properties of TiO2 nanopowders doped with 1 at.% of cerium, cobalt, cooper and iron have been compared. Nanoparticles were synthesized by sol-gel technique and characterized by SEM, EDS and XRD methods. Moreover, their photocatalytic activity was determined based on decomposition of methyl orange. Results were compared with undoped powder. The structural investigations have revealed that all prepared nanopowders were nanocrystalline and had TiO2-anatase structure. The average size of crystallites was ca. 4 nm to 5 nm. The distribution of the dopant was homogenous in case of all manufactured powders. Moreover, for TiO2 doped with Co, Ce and Cu, aggregation effect was not as large as for TiO2:Fe. The results of photocatalytic decomposition showed that self-cleaning activity of all prepared nanopowders was higher as compared to undoped one. Due to the efficiency of these reactions (after 5 hours) nanopowders can be ordered as: TiO2:Co > TiO2:Ce > TiO2:Cu > TiO2:Fe > TiO2.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference52 articles.
1. [1] FUJISHIMA A., RAO T.N., TRYK D.A., J. Photoch. Photobio. C, 1 (2000), 1.
2. [2] FOX M.A., DULAY M.T., Chem. Rev., 83 (1995), 341.
3. [3] THOMPSON T.L., YATES J.T., Chem. Rev., 106 (2006), 4428.
4. [4] FIJISFIMA A., ZHANG X., Comptes. Rendus. Chimie., 9 (2006), 750.
5. [5] CHEN X., MAO S.S., Chem. Rev., 107 (2007), 2891.
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献