期刊
MATERIALS LETTERS
卷 91, 期 -, 页码 213-216出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.09.095
关键词
TiO2; Porous materials; Powder technology; Photocatalysis; Pentachlorophenol
资金
- National Natural Science Foundation of China [21206026]
- Natural Science Foundation of Hebei Province [B2012402011]
- Science and Technology Research Foundation of Hebei Education Department for Outstanding Young Teachers in University [Y2012028]
- Science and Technology Research and Development Projects of Handan City [1128130092, 1223120094]
Mesoporous TiO2 microspheres of sizes varying from 0.5 to 4.5 mu m, which are composed of numerous pure anatase TiO2 nanoparticles of diameter similar to 18 nm were successfully synthesized via a facile route without any template or structure-directing agent. XRD, FESEM, UV-vis DRS and N-2 adsorption-desorption analysis were used to characterize the product. A possible auto-orientation assembly formation mechanism of the TiO2 spherical structure has been proposed. Experimental results show that the obtained mesoporous TiO2 microspheres can be used as photocatalyst to effectively degrade persistent organic pollutant pentachlorophenol under UV irradiation, and the photocatalytic activity of them is much higher than that of commercial P25. (c) 2012 Elsevier B.V. All rights reserved.
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