Preparation, characterization and photocatalytic activity of nanocrystalline thin film TiO2 catalysts towards 3,5-dichlorophenol degradation

Arabatzis, IM; Antonaraki, S; Stergiopoulos, T; Hiskia, A; Papaconstantinou, E; Bernard, MC; Falaras, P

dc.contributor.author	Arabatzis, IM	en
dc.contributor.author	Antonaraki, S	en
dc.contributor.author	Stergiopoulos, T	en
dc.contributor.author	Hiskia, A	en
dc.contributor.author	Papaconstantinou, E	en
dc.contributor.author	Bernard, MC	en
dc.contributor.author	Falaras, P	en
dc.date.accessioned	2014-03-01T01:18:15Z
dc.date.available	2014-03-01T01:18:15Z
dc.date.issued	2002	en
dc.identifier.issn	1010-6030	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14888
dc.subject	3,5-dichlorophenol	en
dc.subject	Dip coating	en
dc.subject	Doctor blade	en
dc.subject	Photocatalysis	en
dc.subject	Surface properties	en
dc.subject	TiO2 films	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	3,5 dichlorophenol	en
dc.subject.other	crystallin	en
dc.subject.other	titanium dioxide	en
dc.subject.other	article	en
dc.subject.other	atomic force microscopy	en
dc.subject.other	catalysis	en
dc.subject.other	chemical reaction	en
dc.subject.other	chemical structure	en
dc.subject.other	controlled study	en
dc.subject.other	degradation kinetics	en
dc.subject.other	photodegradation	en
dc.subject.other	powder	en
dc.subject.other	Raman spectrometry	en
dc.subject.other	scanning electron microscopy	en
dc.subject.other	X ray diffraction	en
dc.title	Preparation, characterization and photocatalytic activity of nanocrystalline thin film TiO2 catalysts towards 3,5-dichlorophenol degradation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1010-6030(01)00645-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1010-6030(01)00645-1	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Both opaque and transparent TiO2 nanocrystalline thin films were developed on glass substrates by applying dip coating and doctor-blade deposition techniques, using titanium(IV) butoxide and Degussa P25 TiO2 powder as precursor and starting material, respectively. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) evaluated the surface characteristics of the films. Results on their structure and crystallinity were obtained by means of X-ray diffraction and Raman spectroscopy. The catalytic activity of the films towards photodegradation of 3,5-dichlorophenol (3,5-DCP) pollutant was examined and their efficiency was compared to that of the TiO2 powder (slurry) suspensions. Pseudo-first-order photodegradation kinetics were observed and the reaction constants were determined. It has been shown that the film photocatalysts can efficiently decompose the pollutant, although relatively higher decomposition rates were observed with the commercial starting powder. Differences in the film efficiencies can be attributed to differences in their grain size, surface roughness and fractal parameters. No altering on the doctor-blade films surface characteristics was observed for several hours of cyclic operation during which their photocatalytic efficiency remained remarkably stable. (C) 2002 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Journal of Photochemistry and Photobiology A: Chemistry	en
dc.identifier.doi	10.1016/S1010-6030(01)00645-1	en
dc.identifier.isi	ISI:000176728800028	en
dc.identifier.volume	149	en
dc.identifier.issue	1-3	en
dc.identifier.spage	237	en
dc.identifier.epage	245	en