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Development of a doped titania immobilised thin film multi tubular photoreactor.

Adams, Morgan; Skillen, Nathan; McCullagh, Cathy; Robertson, Peter K.J.


Nathan Skillen

Peter K.J. Robertson


This paper describes a novel doped titania immobilised thin film multi tubular photoreactor which has been developed for use with liquid, vapour or gas phase media. In designing photocatalytic reactors measuring active surface area of photocatalyst within the unit is one of the critical design parameters. This dictate greatly limits the applicability of any semi-conductor photocatalyst in industrial applications, as a large surface area equates to a powder catalyst. This demonstration of a thin film coating, doped with a rare earth element, novel photoreactor design produces a photocatalytic degradation of a model pollutant (methyl orange) which displayed a comparable degradation achieved with P25 TiO2. The use of lanthanide doping is reported here in the titania sol gel as it is thought to increase the electron hole separation therefore widening the potential useful wavelengths within the electromagnetic spectrum. Increasing doping from 0.5% to 1.0% increased photocatalytic degradation by ∼17% under visible irradiation. A linear relationship has been seen between increasing reactor volume and degradation which would not normally be observed in a typical suspended reactor system.


ADAMS, M., SKILLEN, N., MCCULLAGH, C., AL-KHATIB, S. and ROBERTSON, P.K.J. 2013. Development of a doped titania immobilised thin film multi tubular photoreactor. Applied catalysis B: Environmental [online], 130-131, pages 99-105. Avaialable from:

Journal Article Type Article
Acceptance Date Oct 14, 2012
Online Publication Date Oct 22, 2012
Publication Date Feb 7, 2013
Deposit Date Oct 15, 2014
Publicly Available Date Oct 15, 2014
Journal Applied catalysis B: Environmental
Print ISSN 0926-3373
Electronic ISSN 1873-3883
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 130-131
Pages 99-105
Keywords Photocatalysis; Thin film; Titanium dioxide (TiO2); Lanthanides; Surface area
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