Combustion synthesis and photocatalytic activities of Bi³⁺-doped TiO₂ nanocrystals

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• 作者：Jiaoxian Yu ; Suwen Liu ; Zhiliang Xiu ; Weina Yu ; Guangjian Feng
• 关键词：Titanium dioxide ; Combustion ; Photocatalytic ; Bi ion-doping
• 刊名：Journal of Alloys and Compounds
• 出版年：2008
• 出版时间：11 August 2008
• 年：2008
• 卷：461
• 期：1-2
• 页码：L17-L19
• 全文大小：286 K

文摘

Bismuth ions (Bi³⁺)-doped TiO₂ nanocrystals have been synthesized by citric acid sol–gel combustion method using bismuth nitrate pentahydrate (Bi(NO₃)₃·5H₂O) and titanium chloride (TiCl₄) as raw materials. The obtained products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV–vis absorption spectra. The experiments demonstrated that Bi³⁺ doping in TiO₂ enhances the photocatalytic degradation ratio of methyl orange in aqueous suspension and the optimal dopant of Bi³⁺ in TiO₂ is about 3 % .