期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 228, 期 1-2, 页码 293-298出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2004.09.066
关键词
activated carbon; titanium dioxide; photocatalysis solar technology; phenol
Titanium oxide was deposited on activated carbon (AC) in two forms, as powder and as a pellet. This oxide was obtained using sol-gel process based on titanium isopropoxide and isopropyl alcohol. Nanocrystalline TiO2 anatase phase on activated carbon was obtained using an adequated thermal treatment of 325 degreesC for 5 h considering the thermal instability of the AC. The resulting material was characterized by spectroscopic X-ray fluorescence. scanning electron microscopy with energy dispersive X-ray microanalyses (EDX), and Brunauer-Emmett-Teller (BET) surface area measurements. Activity measurements performed under UV lamp and solar irradiation have shown good results for the photo degradation of phenol in aqueous solution. For solar applications. a polyethylene terephtalate bottle containing the photocatalyts was filled up with the contaminated water and placed a few hours under the solar radiation for a couple of sunny days. The results indicate that 20 ppm of phenol can be removed by using this method. (C) 2004 Elsevier B.V. All rights reserved.
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