TY - JOUR
T1 - Photocatalytic activity of titania coatings synthesised by a combined laser/sol-gel technique
AU - Adraider, Y.
AU - Pang, Y. X.
AU - Nabhani, F.
AU - Hodgson, S. N.
AU - Sharp, M. C.
AU - Al-Waidh, A.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Titania coatings were prepared using sol-gel method and then applied on the substrate surface by dip coating. Fibre laser (λ = 1064 nm) in continuous wave mode was used to irradiate the titania coated surfaces at different specific energies. The ATR-FTIR, XRD, SEM, EDS and contact angle measurement were employed to analyse surface morphology, phase composition and crystalline structure of laser-irradiated titania coatings, whilst the photocatalytic activity was evaluated by measuring the decomposition of methylene blue (MB) after exposure to the visible light for various illumination times. Results showed that the laser-irradiated titania coatings demonstrate significant different composition and microstructure in comparison with the as-coated from the same sol-gel titania. Photocatalytic efficiency of titania coatings was significantly improved after laser processing. The photocatalytic activity of laser-irradiated titania coatings was higher than that of the as-coated titania. The titania coating processed at laser specific energy of 6.5 J/mm2 exhibited the highest photocatalytic activity among all titania samples.
AB - Titania coatings were prepared using sol-gel method and then applied on the substrate surface by dip coating. Fibre laser (λ = 1064 nm) in continuous wave mode was used to irradiate the titania coated surfaces at different specific energies. The ATR-FTIR, XRD, SEM, EDS and contact angle measurement were employed to analyse surface morphology, phase composition and crystalline structure of laser-irradiated titania coatings, whilst the photocatalytic activity was evaluated by measuring the decomposition of methylene blue (MB) after exposure to the visible light for various illumination times. Results showed that the laser-irradiated titania coatings demonstrate significant different composition and microstructure in comparison with the as-coated from the same sol-gel titania. Photocatalytic efficiency of titania coatings was significantly improved after laser processing. The photocatalytic activity of laser-irradiated titania coatings was higher than that of the as-coated titania. The titania coating processed at laser specific energy of 6.5 J/mm2 exhibited the highest photocatalytic activity among all titania samples.
UR - http://www.scopus.com/inward/record.url?scp=84897381863&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2014.03.007
DO - 10.1016/j.materresbull.2014.03.007
M3 - Article
AN - SCOPUS:84897381863
SN - 0025-5408
VL - 54
SP - 54
EP - 60
JO - Materials Research Bulletin
JF - Materials Research Bulletin
ER -