Photocatalytic performance of V2O5/TiO2 materials prepared by chemical vapor condensation and impregnation method under visible-light
- Authors
- Cha, W.; Chin, S.; Park, E.; Yun, S.-T.; Jurng, J.
- Issue Date
- 2014
- Publisher
- Elsevier
- Keywords
- Chemical vapor condensation; TEM; XPS
- Citation
- Powder Technology, v.258, pp.352 - 357
- Indexed
- SCIE
SCOPUS
- Journal Title
- Powder Technology
- Volume
- 258
- Start Page
- 352
- End Page
- 357
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/100873
- DOI
- 10.1016/j.powtec.2014.03.012
- ISSN
- 0032-5910
- Abstract
- In this study, we prepared V2O5/TiO2 nanosized materials 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 performance was evaluated. The materials prepared using CVC-TiO2 had a larger specific surface area, with very small particles in the amorphous phase, as well as a greater number of 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). © 2014 Elsevier B.V.
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