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Tin(II) doped anatase (TiO2) nanoparticles: a potential route to "greener" yellow pigments.

hal.structure.identifierDepartment of Chemistry
dc.contributor.authorGHOSH, Moumita
hal.structure.identifierLaboratoire de cristallographie et sciences des matériaux [CRISMAT]
dc.contributor.authorPRALONG, Valérie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, A.
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorSLEIGHT, A. W.
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorSUBRAMANIAN, M. A.
dc.date.issued2009
dc.identifier.issn1861-4728
dc.description.abstractEnDuring our exploration of compounds in the Sn(II)-Ti(IV)-O system, we discovered that hydrolysis of titanium alkoxide solution in the presence of Sn(II) salts resulted in stable deep-yellow colored anatase nanoparticles. The samples were characterized by X-ray powder diffraction, electron microprobe, thermal analysis, transmission electron microscopy, and (119)Sn Mössbauer spectroscopy. Mössbauer data of the yellow colored samples showed the presence of both Sn(II) and Sn(IV) in a distorted environment as expected in the anatase structure. It is suggested that the cationic charge imbalance is compensated by oxygen vacancies and/or hydroxyl groups as evidenced by Mössbauer data which show two types of Sn(II) environments. When heated in air to 300 degrees C the samples changed color to completely white and (119)Sn Mössbauer data of these samples showed only the presence of Sn(IV). These observations indicate that the origin of the yellow color in our Sn doped anatase nanoparticles arises from filled Sn 5s states just above the O 2p band, thus decreasing the band gap. The Sn(II) doped anatase TiO(2) nanoparticles reported here can potentially lead to environmentally benign yellow pigments. The simplistic nature of the synthetic procedure could easily be adapted to large-scale industrial manufacture.
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.title.enTin(II) doped anatase (TiO2) nanoparticles: a potential route to "greener" yellow pigments.
dc.typeArticle de revue
dc.identifier.doi10.1002/asia.200900028
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry - An Asian Journal
bordeaux.page881-885
bordeaux.volume4
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-00528915
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00528915v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20-%20An%20Asian%20Journal&rft.date=2009&rft.volume=4&rft.issue=6&rft.spage=881-885&rft.epage=881-885&rft.eissn=1861-4728&rft.issn=1861-4728&rft.au=GHOSH,%20Moumita&PRALONG,%20Val%C3%A9rie&WATTIAUX,%20A.&SLEIGHT,%20A.%20W.&SUBRAMANIAN,%20M.%20A.&rft.genre=article


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