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mtzh

捐助贵宾 (著名写手)

翻译EPI: 10
应助: 15 (小学生)
金币: 2710.3
散金: 1672
红花: 19
帖子: 2147
在线: 511.2小时
虫号: 336164
注册: 2007-04-01
性别: MM
专业: 污染控制化学

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wypward(金币+1):谢谢参与 2010-10-11 11:52:51
海之帆(金币+1, 翻译EPI+1):50 2010-10-13 09:39:49
ringzhu(金币+29):呵呵可能他不怎么会操作。。。偶帮你讨回金币来 2010-11-20 11:12:18
ringzhu(金币+20): 2010-11-20 11:12:26

Pr doped TiO2 photocatalyst possesses high stability with anatase as the main crystal phase, and the particle size is smaller than the undoped one, indicating that the Pr doping effectively inhibits the nanocrystal growth. Performance of photocatalytic degradation shows that the highest photoactivity is achieved when the Pr content is 2.0%（mol%. Increased numbers of H2O and hydroxyls on TiO2 surface resulting from the Pr doping facilitates the improvement of the photoactivity. As is shown in the photoluminescence spectra, the surface capture state is lower than that of the unmodified TiO2 which can inhibit the recombination of the photogenerated carriers and result in a higher photocatalytic activity. In photocatalytic degradation of Rhodamine B, hydroxyl adsorbed on TiO2 surface plays an important role.

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