title: Tungsten Doped TiO2 with Enhanced Photocatalytic and Optoelectrical Properties via Aerosol Assisted Chemical Vapor Deposition.
abstract: Tungsten doped titanium dioxide films with both transparent conducting oxide (TCO) and photocatalytic properties were produced via aerosol-assisted chemical vapor deposition of titanium ethoxide and dopant concentrations of tungsten ethoxide at 500 °C from a toluene solution. The films were anatase TiO2, with good n-type electrical conductivities as determined via Hall effect measurements. The film doped with 2.25 at.% W showed the lowest resistivity at 0.034 Ω.cm and respectable charge carrier mobility (14.9 cm(3)/V.s) and concentration (×10(19) cm(-3)). XPS indicated the presence of both W(6+) and W(4+) in the TiO2 matrix, with the substitutional doping of W(4+) inducing an expansion of the anatase unit cell as determined by XRD. The films also showed good photocatalytic activity under UV-light illumination, with degradation of resazurin redox dye at a higher rate than with undoped TiO2.
authors.affiliation: 1] Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK [2] Bio Nano Consulting Ltd, The Gridiron Building, One St. Pancras Square, London N1C 4AG, UK.
authors.forename: Sanjayan
authors.initials: S
authors.lastname: Sathasivam
authors.affiliation: Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors.forename: Davinder S
authors.initials: DS
authors.lastname: Bhachu
authors.affiliation: Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors.forename: Yao
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Chadwick
authors.affiliation: 1] Chemistry Department, King Abdulaziz University, Saudi Arabia [2] Surface Chemistry and Catalytic Studies Group, King Abdulaziz University, Saudi Arabia.
authors.forename: Shaeel A
authors.initials: SA
authors.lastname: Althabaiti
authors.affiliation: 1] Chemistry Department, King Abdulaziz University, Saudi Arabia [2] Surface Chemistry and Catalytic Studies Group, King Abdulaziz University, Saudi Arabia.
authors.forename: Abdulrahman O
authors.initials: AO
authors.lastname: Alyoubi
authors.affiliation: 1] Chemistry Department, King Abdulaziz University, Saudi Arabia [2] Surface Chemistry and Catalytic Studies Group, King Abdulaziz University, Saudi Arabia.
authors.forename: Sulaiman N
authors.initials: SN
authors.lastname: Basahel
authors.affiliation: Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors.forename: Claire J
authors.initials: CJ
authors.lastname: Carmalt
authors.affiliation: Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors.forename: Ivan P
authors.initials: IP
authors.lastname: Parkin