Photocatalytic performance of V2O5/TiO2 materials prepared by chemical vapor condensation and impregnation method under visible-light
- Photocatalytic performance of V2O5/TiO2 materials prepared by chemical vapor condensation and impregnation method under visible-light
- 차우준; 진성민; 박은석; 윤성택; 정종수
- Photocatalytic; V2O5/TiO2; chemical vapor condensation; visible-light; Ti 3+; XPS; TEM
- Issue Date
- Powder technology
- VOL 258, 352-357
- In this study,we prepared V2O5/TiO2 nanosizedmaterials by chemical vapor condensation (CVC) and impregnation for visible-light photocatalysis. The physicochemical surface characteristics and optical properties of all samples were determined by XRD, BET, HR-TEM, XPS, UV–visible spectroscopy, and photoluminescence (PL) spectroscopy, and the visible-light photocatalytic performancewas evaluated. The materials prepared using CVC-TiO2 had a larger specific surface area,with very small particles in the amorphous phase, aswell as a greater numberof Ti3+ ions and hydroxyl groups, and lower PL intensity. The band gap of V2O5/TiO2 narrowed with increased V2O5 loading, resulting in increased photocatalytic activity and enhanced visible-light absorbance. The photocatalytic activity of V2O5/CVC-TiO2 was twice that of a sample obtained using commercial TiO2 (Daegussa, P25).
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