The Effect of Erbium on the Adsorption and Photodegradation of Orange I in Aqueous Er super(3+)-TiO sub(2) Suspension

The adsorption, degradation and mineralization of orange I in aqueous suspension using the pure titanium dioxide (TiO sub(2)) and erbium ion-doped TiO sub(2) (Er super(3+)-TiO sub(2)) catalysts were investigated. A series of Er super(3+)-TiO sub(2) catalysts were prepared by doping erbium ion into T...

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Bibliographic Details
Published in:Journal of hazardous materials 2006-12, Vol.138 (3), p.471-471
Main Authors: Liang, Chun-Hua, Hou, Mei-Fang, Zhou, Shun-Gui, Li, Fang-Bai, Liu, Cheng-Shuai, Liu, Tong-Xu, Gao, Yuan-Xue
Format: Article
Language:English
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Summary:The adsorption, degradation and mineralization of orange I in aqueous suspension using the pure titanium dioxide (TiO sub(2)) and erbium ion-doped TiO sub(2) (Er super(3+)-TiO sub(2)) catalysts were investigated. A series of Er super(3+)-TiO sub(2) catalysts were prepared by doping erbium ion into TiO sub(2) structure with different content by the sol-gel method. The X-ray diffraction (XRD) results showed that erbium ion doping could enhance the thermal stability of TiO sub(2) and inhibited the increase of the crystallite size. The results indicated that the optimal dosage of erbium ion was 1.5% under both ultraviolet (UV) radiation and visible light. Er super(3+)-TiO sub(2) could mineralize orange I more effectively than pure TiO sub(2). The separation efficiency of interfacial charges by Er super(3+) doping might lead to an optimal Er super(3+) dosage for the degradation of orange I.
ISSN:0304-3894
DOI:10.1016/j.jhazmat.2006.05.066