University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Surface characterisation and photocatalytic performance of N-doped TiO2 thin films deposited onto 200 nm pore size alumina membranes by sol-gel methods

Grilli, R, Di Camillo, D, Lozzi, L, Horovitz, I, Mamane, H, Avisar, D and Baker, MA (2015) Surface characterisation and photocatalytic performance of N-doped TiO2 thin films deposited onto 200 nm pore size alumina membranes by sol-gel methods Materials Chemistry and Physics, 159. pp. 25-37.

[img] Text
MatChemPhys paper.docx
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (12MB)
[img]
Preview
Text (licence)
SRI_deposit_agreement.pdf
Available under License : See the attached licence file.

Download (33kB) | Preview
[img]
Preview
Text
MatChemPhys paper.pdf

Download (1MB) | Preview

Abstract

© 2015 Elsevier B.V. Membrane filtration is employed for water treatment and wastewater reclamation purposes, but membranes alone are unable to remove pollutant molecules and certain pathogens. Photocatalytically active N-doped TiO2 coatings have been deposited by sol-gel onto 200 nm pore size alumina membranes for water treatment applications using two different methods, via pipette droplets or spiral bar applicator. The uncoated and coated membranes were characterised by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectrometry (EDX). Both coatings showed the presence of N-doped anatase, with a surface coverage between 84 and 92%, and nitrogen concentration (predominantly interstitial) of 0.9 at.%. The spiral bar applicator deposited coatings exhibit a thicker mud-cracked surface layer with limited penetration of the porous membrane, whilst the pipette deposited coatings have mostly penetrated into the bulk of the membrane and a thinner layer is present at the surface. The photocatalytic activity (PCA), measured through the degradation of carbamazepine (CBZ), under irradiation of a solar simulator was 58.6% for the pipette coating and 63.3% for the spiral bar coating. These photocatalytically active N-doped sol-gel coated membranes offer strong potential in forming the fundamental basis of a sunlight based water treatment system.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
AuthorsEmailORCID
Grilli, RUNSPECIFIEDUNSPECIFIED
Di Camillo, DUNSPECIFIEDUNSPECIFIED
Lozzi, LUNSPECIFIEDUNSPECIFIED
Horovitz, IUNSPECIFIEDUNSPECIFIED
Mamane, HUNSPECIFIEDUNSPECIFIED
Avisar, DUNSPECIFIEDUNSPECIFIED
Baker, MAUNSPECIFIEDUNSPECIFIED
Date : 1 January 2015
Identification Number : 10.1016/j.matchemphys.2015.03.044
Additional Information : © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Depositing User : Symplectic Elements
Date Deposited : 20 Oct 2015 18:04
Last Modified : 01 Jan 2016 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/808987

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800