Photocatalytic Activities of TiO2 and TiO2/Al2O3 Films Coated on Foam Nickel Substrates

doi:10.3724/SP.J.1077.2007.00363

Abstract

Abstract: Anatase TiO₂ and TiO₂/Al₂O₃ films were successfully prepared on foam nickel substrates by sol-gel technique. The characteristics and photocatalytic activities of the TiO₂ and TiO₂/Al₂O₃ films were investigated by XRD, FE-SEM, etc and by photocatalytic degradation reactions of gaseous acetaldehyde under ultraviolet light irradiation, respectively. The TiO₂ and TiO₂/Al₂O₃ films coated on foam nickel substrates display a high photocatalytic activity for the degradation of acetaldehyde. Compared with the onefold TiO₂ films coated on foam nickel, the TiO₂/Al₂O₃ films show much higher photocatalytic activities. It is confirmed that photocatalytic activities and stabilities are enhanced by coating Al₂O₃ as transition layer on foam nickel, which increase the specific surface areas of substrate surface and absorption property, resulting in increase in the photocatalytic activity.

Key words: photocatalysis, foam nickel, TiO2/Al2O3 films, acetaldehyde degradation

CLC Number:

TB303
TQ032

HU Hai,XIAO Wen-Jun,YUAN Jian,SHI Jian-Wei,SHANGGUAN Wen-Feng. Photocatalytic Activities of TiO₂ and TiO₂/Al_2O3Films Coated on Foam Nickel Substrates[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00363.

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Photocatalytic Activities of TiO₂ and TiO₂/Al_2O3Films Coated on Foam Nickel Substrates

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