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Citation: CHEN Qi, FEI Xia, HE Qinqin, WU Qiliang, HE Bing, LIU Xueting. Synthesis,Characterization and Synergistic Effect of Tb-loaded Mesoporous Titanium Dioxide[J]. Chinese Journal of Applied Chemistry, ;2014, 31(10): 1222-1228. doi: 10.3724/SP.J.1095.2014.30576 shu

Synthesis,Characterization and Synergistic Effect of Tb-loaded Mesoporous Titanium Dioxide

1.
School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China

Corresponding author: LIU Xueting,
Received Date: 15 November 2013
Available Online: 23 May 2014
Fund Project: 安徽省高校省级自然科学研究重点项目(KJ2010A271) (KJ2010A271)

Using block copolymer P123 as the template, Tb(terbium)-loaded mesoporous TiO₂ photocatalysts were prepared by the evaporation induced self-assembly method and characterized by X-ray diffraction(XRD), N₂ adsorption-desorption and ultraviolet-visible(UV-Vis) absorbance spectroscopy. Tb-loaded mesoporous TiO₂ with a mixture of anatase and rutile phases exhibits a high photocatalytic activity for degradation of rhodamine B(RhB) under the irradiation of visible light. It is found that 0.7% loading of Tb and 380℃ calcination temperature are the most appropriate preparation conditions for achieving high photocatalytic performance. The synergistic effect of high specific surface area, small crystallite size of mesoporous TiO₂, Tb-induced charge-separation and increase of visible light absorption has improved the photocatalytic activity. The mechanism of enhancement of photocatalysis in Tb loaded TiO₂ is proposed.
- mesoporous titanium dioxide,
- Tb-loaded,
- synergistic effect
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