Loading…
Photocatalytic performance of V2O5/TiO2 materials prepared by chemical vapor condensation and impregnation method under visible-light
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 ph...
Saved in:
Published in: | Powder technology 2014-05, Vol.258, p.352-357 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | 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).
[Display omitted]
•The intensity of Ti3+ in CVC-materials were higher than in P25-materials.•The CVC-materials contained only amorphous anatase and small particles.•PL intensities of CVC-materials were very low.•Photocatalytic activity of V2O5/CVC-TiO2 was double V2O5/P25-TiO2. |
---|---|
ISSN: | 0032-5910 1873-328X |
DOI: | 10.1016/j.powtec.2014.03.012 |