Hostname: page-component-76fb5796d-vfjqv Total loading time: 0 Render date: 2024-04-27T04:31:04.523Z Has data issue: false hasContentIssue false
  • English
  • Français

Doping of TiO2 nanopowders with vanadium for the reduction of its band gap reaching the visible light spectrum region

Published online by Cambridge University Press:  03 June 2014

Majid Ahmadi  and
Maxime J-F. Guinel
Majid Ahmadi
Affiliation:
Department of Physics, College of Natural Sciences, University of Puerto Rico, PO Box 70377, San Juan, Puerto Rico 00936-8377
Maxime J-F. Guinel*
Affiliation:
Department of Physics, College of Natural Sciences, University of Puerto Rico, PO Box 70377, San Juan, Puerto Rico 00936-8377; Department of Chemistry, College of Natural Sciences, University of Puerto Rico, PO Box 70377, San Juan, Puerto Rico 00936-8377
*
Address all correspondence to Maxime J-F. Guinel atmaxime.guinel@upr.edu
Get access

Abstract

Titanium oxide (TiO2) nanoparticles (NPs) were doped with vanadium using a novel, facile, and inexpensive method. The TiO2 NPs were dispersed in a vanadyl oxalate solution prepared by dissolving vanadium pentoxide (V2O5) in oxalic acid. A short heat treatment at 400 °C applied to the dried mixture resulted in the doping of TiO2 with a net measured decrease of its band gap by about 0.5 eV, making this important semiconductor material usable in the visible light spectrum.

Type
Research Letters
Information
MRS Communications , Volume 4 , Issue 2 , June 2014 , pp. 73 - 76
Copyright
Copyright © Materials Research Society 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Fujishima, A. and Honda, K.: Electrochemical photolysis of water at a semiconductor electrode. Nature 238, 37–38 (1972).Google Scholar
2.Wu, J.C.S. and Chen, C.H.: A visible-light response vanadium-doped titania nanocatalyst by sol-gel method. J. Photochem. Photobiol. A: Chem. 163, 509–515 (2004).Google Scholar
3.Klosek, S. and Raftery, D.: Visible light driven V-doped TiO2 photocatalyst and its photooxidation of ethanol. J. Phys. Chem. B 105, 2815–2819 (2001).CrossRefGoogle Scholar
4.Zhou, W., Liu, Q., Zhu, Z., and Zhang, J.: Preparation and properties of vanadium-doped TiO2 photocatalysts. J. Phys. D: Appl. Phys. 43, 035301 (2010).CrossRefGoogle Scholar
5.Sene, J.J., Zeltner, W.A., and Anderson, M.A.: Fundamental photoelectrocatalytic and electrophoretic mobility studies of TiO2 and V-doped TiO2 thin-film electrode materials. J. Phys. Chem. B 107, 1597–1603 (2003).Google Scholar
6.Gu, D.E., Yang, B.C., and Hu, Y.D.: V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation. J. Catal. Commun. 9, 1472–1476 (2008).Google Scholar
7.Ohtani, B., Prieto-Mahaney, O.O., Li, D., and Abe, R.: What is Degussa (Evonik) P25- crystalline composition analysis, reconstruction from isolated pure particles and photocatalytic activity test. J. Photochem. Photobiol. A: Chem. 216, 179–182 (2010).Google Scholar
8.McComb, D.W.: Bonding and electronic structure in zirconia pseudopolymorphs investigated by electron energy-loss spectroscopy. Phys. Rev. B 54, 7094–7120 (1996).CrossRefGoogle ScholarPubMed
9.Pan, A., Zhang, J.G., Nie, Z., Cao, G., Arey, B.W., Li, G., Liang, S., and Liu, J.: Facile synthesized nanorod structured vanadium pentoxide for high-rate lithium batteries. J. Mater. Chem. 20, 9193–9199 (2010).CrossRefGoogle Scholar
10.Fischer, D.W.: X-ray band spectra and molecular-orbital structure of rutile TiO2. Phys. Rev. B 5, 4219–4226 (1972).Google Scholar
11.Pascual, J., Camassel, J., and Mathieu, H.: Fine structure in the intrinsic absorption edge of TiO2. Phys. Rev. B 18, 5605–5614 (1978).Google Scholar
12.Sanjines, R., Tang, H., Berger, H., Gozzo, F., Margaritondo, G., and Levy, F.: Electronic structure of anatase TiO2 oxide. J. Appl. Phys. 75, 2945–2951 (1994).CrossRefGoogle Scholar
Supplementary material: File

Ahmadi and Guinel Supplementary Material

Figure S1

Download Ahmadi and Guinel Supplementary Material(File)
File 3.6 MB
Supplementary material: Image

Ahmadi and Guinel Supplementary Material

Figure S1

Download Ahmadi and Guinel Supplementary Material(Image)
Image 3.6 MB