TY - JOUR
T1 - Photocatalytic performance of V2O5/TiO2 materials prepared by chemical vapor condensation and impregnation method under visible-light
AU - Cha, Woojoon
AU - Chin, Sungmin
AU - Park, Eunseuk
AU - Yun, Seong Taek
AU - Jurng, Jongsoo
N1 - Funding Information:
This work was supported by the Ministry of Environment ( 192-091-001 ) and the National Research Foundation of Korea Grant funded by the Korean Government (Ministry of Science, ICT & Future Planning) (2013, University-Institute cooperation program).
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/5
Y1 - 2014/5
N2 - 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).
AB - 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).
KW - Chemical vapor condensation
KW - TEM
KW - XPS
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U2 - 10.1016/j.powtec.2014.03.012
DO - 10.1016/j.powtec.2014.03.012
M3 - Article
AN - SCOPUS:84897408625
SN - 0032-5910
VL - 258
SP - 352
EP - 357
JO - Powder Technology
JF - Powder Technology
ER -