The Effect of the Composition of Tri-Elemental Doping (K, Al, S) on the Photocatalytic Performance of Synthesized TiO2 Nanoparticles in Oxidizing 2-Chlorophenol Over Visible Light Illumination

doi:10.1016/j.apcata.2011.05.028

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/27013

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题名:	The Effect of the Composition of Tri-Elemental Doping (K, Al, S) on the Photocatalytic Performance of Synthesized TiO2 Nanoparticles in Oxidizing 2-Chlorophenol Over Visible Light Illumination
作者:	Nolan, C.Tolosa Lu, Ming-Chun Herman, D.Mendoza Analiza, P.Rollon
贡献者:	環境資源管理系
关键词:	2-Chlorophenol Alkoxides Nanoparticles Oxo-polymers Tri-elemental
日期:	2011-07
上传时间:	2013-10-16 16:57:34 (UTC+8)
出版者:	Elsevier
摘要:	This study investigated the effect of tri-elemental doping specifically potasium (K), aluminum (Al) and sulfur (S) on the performance of the synthesized titanium dioxide (TiO2) nanoparticles under visible light illumination. The synthesized photocatalyst was prepared by sol–gel method using potash alum or potassium aluminun sulfate [KAl(SO4)2] as dopant. The process involves hydrolysis and condensation reactions of titanium alkoxides forming oxo-polymers. The process involved oxidation of 2-chlorophenol (2-CP) in aqueous conditions. The specific surface area, morphology, structure and surface charge of the synthesized photocatalyst were comparable to those of commercial Degussa P-25. Results show that the specific surface area of the catalysts decreased after calcination process. This effect corresponds with the XRD results, surface charge, EDS and photo-oxidation of the 2-CP using the TiO2/KAl(SO4)2 catalyst, wherein oxidation of 2-CP can be increased up to 96% in 4 h irradiation. However, complete mineralization of 2-CP needs longer irradiation time.
關聯:	Applied Catalysis A: General, 401(1-2), pp.233-238
显示于类别:	[Dept. of Environmental Resources Management] Periodical Articles

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