|Photocatalytic Activities of TiO2 Coated on Different Semiconductive SiC Foam Supports|
|D. Hao; Z. M. Yang; C. H. Jiang; J. S. Zhang
|Source Publication||Journal of Materials Science & Technology
|Abstract||Different semiconductive SiC foam supports were prepared by varying the sintering temperature and atmosphere, and with or without alkaline solution treatment and high temperature oxidation following a macromolecule pyrogenation combined with reaction bonding method. Nano-TiO2 particles were immobilized onto these SiC foam supports by a composite solegel method. The phase, surface morphology, the type of conduction and the photocatalytic activity of the TiO2-SiC composite photocatalysts were studied. The TiO2 coated on p-type Si-free SiC support showed the highest photocatalytic efficiency in degradation of 4aminobenzenesulfonic acid (4-ABS) in aqueous solution as compared to that coated on n-type SiC support and p-type SiC supports with residual Si or SiO2 on the surface. The result showed that the TiO2 coatings immobilized on p-type semiconductive SiC foam supports exhibited obviously higher photocatalytic activity in comparison to that coated on n-type SiC foam support. The pen heterojunctions formed between the p-type SiC supports and n-type TiO2 coatings might be able to account for the better charge separation and transfer as well as the photocatalytic activity of the TiO2-SiC composite photocatalyst.|
; yang, zhenming
; jiang, chunhai
; zhang, jinsong] chinese acad sci, inst met res, shenyang 110016, peoples r china. [hao, dong] univ chinese acad sci, beijing 100049, peoples r china.
; zhang, js (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china.
|Keyword||Sic Foam Ceramics
D. Hao,Z. M. Yang,C. H. Jiang,et al. Photocatalytic Activities of TiO2 Coated on Different Semiconductive SiC Foam Supports[J]. Journal of Materials Science & Technology,2013,29(11):1074-1078.
D. Hao,Z. M. Yang,C. H. Jiang,&J. S. Zhang.(2013).Photocatalytic Activities of TiO2 Coated on Different Semiconductive SiC Foam Supports.Journal of Materials Science & Technology,29(11),1074-1078.
D. Hao,et al."Photocatalytic Activities of TiO2 Coated on Different Semiconductive SiC Foam Supports".Journal of Materials Science & Technology 29.11(2013):1074-1078.
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