Highly visible-light active nanoporous TiO2 photocatalysts for efficient solar photocatalytic applications

作者: Hyun Uk Lee , Soon Chang Lee , Sae Hae Choi , Byoungchul Son , Soo Jae Lee

DOI: 10.1016/J.APCATB.2012.09.010

关键词: PhotocatalysisThermal treatmentSol-gelNanoporousTitanium dioxideVisible spectrumAnataseNuclear chemistryNanotechnologyCrystalliteMaterials science

摘要: We report highly visible-light active nanoporous carbon-doped TiO2 (C-TiO2) and sulfur-doped TiO2 (S-TiO2) for environmental and biomedical applications. C-TiO2 and S-TiO2 were synthesized at room temperature without thermal treatment using modified sol–gel processing and ultrasound irradiation. Under visible-light irradiation, the highest photocatalytic activity for S-TiO2 ([k]= 3.121 h− 1) was found to be 28 times higher than that of undoped nanoporous TiO2 ([k]= 0.112 h− 1). The recyclability of the S-TiO2 photocatalyst …

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