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Visible-light photocatalytic properties of γ-Bi2O3 composited with Fe2O3

更新时间:2012-3-14:  来源:毕业论文
by sol-gel method. The photocatalytic experiment shows the photocatalytic activity of the samples is enhanced compared to pure γ-Bi2O3, when the composite content (x) is under 30 wt. %. The best composite content is 10 wt. %. In this case, the rate constant is 0.2495 min-1, and is 4.1 times of that of γ-Bi2O3. Under irradiation of visible light, photoinduced holes of Fe2O3 migrate to the VB of γ-Bi2O3 and contribute to the degradation of RhB. This study indicates that constructing a heterojunction between γ-Bi2O3/Fe2O3(x) helps to utilize visible-light and to promote separation of electron-hole pair.
Acknowledgements
This work has been supported by the National Natural Science Foundation of China (No. 50732004 and No. 51072012).机械工程导论心得体会论文报告
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