Efficient photocatalysts by hydrothermal treatment of TiO2

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dc.contributor.author Kontos, AI en
dc.contributor.author Arabatzis, IM en
dc.contributor.author Tsoukleris, DS en
dc.contributor.author Kontos, AG en
dc.contributor.author Bernard, MC en
dc.contributor.author Petrakis, DE en
dc.contributor.author Falaras, P en
dc.date.accessioned 2014-03-01T02:43:13Z
dc.date.available 2014-03-01T02:43:13Z
dc.date.issued 2005 en
dc.identifier.issn 0920-5861 en
dc.identifier.uri http://hdl.handle.net/123456789/31315
dc.subject Adherence en
dc.subject AFM en
dc.subject Hydrothermal treatment en
dc.subject Methyl orange en
dc.subject Photocatalyst activity en
dc.subject Pollutant degradation en
dc.subject TiO2 nanocrystalline thin films en
dc.subject.classification Chemistry, Applied en
dc.subject.classification Chemistry, Physical en
dc.subject.classification Engineering, Chemical en
dc.subject.other Glass en
dc.subject.other Modification en
dc.subject.other Nanostructured materials en
dc.subject.other Photocatalysis en
dc.subject.other Powder metals en
dc.subject.other Solvent extraction en
dc.subject.other Titanium dioxide en
dc.subject.other Adherence en
dc.subject.other Hydrothermal treatment en
dc.subject.other Methyl orange en
dc.subject.other Photocatalyst activity en
dc.subject.other Pollutant degradation en
dc.subject.other TiO2 nanocrystalline thin films en
dc.subject.other Heat treatment en
dc.title Efficient photocatalysts by hydrothermal treatment of TiO2 en
heal.type conferenceItem en
heal.identifier.primary 10.1016/j.cattod.2005.03.003 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.cattod.2005.03.003 en
heal.language English en
heal.publicationDate 2005 en
heal.abstract Mixed phase nanocrystalline TiO2 powders (anatase-rutile) (Degussa P25) were prepared by hydrothermal modification. The preparation procedure took place at 200 ° C for 1-10 days in an autoclave system with water as the solvent. Thus, different degrees of modification were achieved. TiO2 water modified nanocrystalline thin films were immobilized on glass substrates by applying a doctor-blade's deposition technique. A variety of spectroscopic [UV-vis reflectance, infra-red (IR), Raman, structural X-ray diffraction (XRD), N-2 absorption (BET)] and microscopic [atomic force microscopy (AFM), scanning electron microscopy (SEM)] techniques were applied to characterize the modified films. A model textile industry pollutant (methyl orange) was used in order to evaluate the photocatalytic efficiency of the modified material. Our results show that the photocatalytic activity of the modified films is improved by a factor of 2 when we extend the hydrothermal treatment up from 1 to about 4 days in the autoclave system. Scratch tests revealed favorable interconnection of the titania nanoparticles as well as significantly higher adhesion to the glass substrate for the modified films, in comparison to the original P25 material. © 2005 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE BV en
heal.journalName Catalysis Today en
dc.identifier.doi 10.1016/j.cattod.2005.03.003 en
dc.identifier.isi ISI:000229535200013 en
dc.identifier.volume 101 en
dc.identifier.issue 3-4 SPEC. ISS. en
dc.identifier.spage 275 en
dc.identifier.epage 281 en

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