Sunlight-activated AlFeO3/TiO2 photocatalyst

A nanocomposite photocatalyst composed of AlFeO3 and TiO2 is prepared, and characterized through X-ray diffraction. Application of the nanocomposite for the photodegradations of eosin dye and methyl orange gives an improved photoactivity compared with TiO2-only nanomaterials. The optimal concentrati...

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Published in:Science China. Chemistry 2006-02, Vol.49 (1), p.67-74
Main Authors: Yuan, Zhihao, Wang, Yuhong, Sun, Yongchang, Wang, Jing, Bie, Lijian, Duan, Yueqing
Format: Article
Language:English
Subjects:
Current carriers
Dyes
Energy utilization
Excitation
Nanocomposites
Nanomaterials
Photocatalysts
Photodegradation
Solar energy
Sunlight
Titanium dioxide
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cited_by cdi_FETCH-LOGICAL-c306t-4faa64c9a26d1745f3c0f3cfc4129fa94c9e744bb13f8ce0421ce42bb9a85ed83
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container_start_page 67
container_title Science China. Chemistry
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creator Yuan, Zhihao
Wang, Yuhong
Sun, Yongchang
Wang, Jing
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description A nanocomposite photocatalyst composed of AlFeO3 and TiO2 is prepared, and characterized through X-ray diffraction. Application of the nanocomposite for the photodegradations of eosin dye and methyl orange gives an improved photoactivity compared with TiO2-only nanomaterials. The optimal concentration of AlFeO3 in the composite is about 1.0 wt% under UV excitation, and 9.0 wt% under sunlight excitation for the improved photoactivity. Furthermore, this nanocomposite is more active for eosin photodegradation if natural sunlight rather than UV is used. This may be due to the reason that adding AlFeO3 nanoparticles into TiO2 matrix can promote the separation of photogener-ated charge carriers, and extend the photoresponse of TiO2 toward visible region, which results in an increase in the solar energy utilization efficiency.
doi_str_mv 10.1007/s11426-004-0106-y
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subjects Current carriers
Dyes
Energy utilization
Excitation
Nanocomposites
Nanomaterials
Photocatalysts
Photodegradation
Solar energy
Sunlight
Titanium dioxide
title Sunlight-activated AlFeO3/TiO2 photocatalyst
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