Heat treatment effect on the physical properties of cobalt doped TiO2 sol-gel materials
Identifieur interne : 000339 ( Main/Curation ); précédent : 000338; suivant : 000340Heat treatment effect on the physical properties of cobalt doped TiO2 sol-gel materials
Auteurs : L. Samet [Tunisie] ; J. Ben Nasseur [Tunisie] ; R. Chtourou [Tunisie] ; K. March [France] ; O. Stephan [France]Source :
- Materials characterization [ 1044-5803 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Dopage.
English descriptors
Abstract
Cobalt doped and undoped TiO2 powders have been prepared by sol-gel technique and annealed at temperatures ranging from 400 °C to 1000 °C. The effects of annealing temperature on the structural, morphological and optical properties have been characterized by X-ray diffraction, transmission electron microscopy, electron energy-loss spectroscopy and diffuse reflectance spectroscopy. For all doped samples there is a general reduction of the band gap energy, in comparison with undoped samples prepared in the same conditions. More specifically, experimental results indicate that cobalt doping, occurring as Co2+ ion insertion into the TiO2 (Ti4+) host lattice, inhibits the growth of the crystallites and delays the phase transformation from anatase to rutile. Moreover, at high temperature, a secondary phase (CoTiO3) is found to coexist with highly crystalline rutile. These structural characteristics are discussed in relation with the observed general trends for the optical properties.
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: Pour aller vers cette notice dans l'étape Curation :000018
- to stream PascalFrancis, to step Curation: Pour aller vers cette notice dans l'étape Curation :000277
- to stream PascalFrancis, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :000030
- to stream Main, to step Merge: Pour aller vers cette notice dans l'étape Curation :000340
Links to Exploration step
Pascal:14-0022698Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Heat treatment effect on the physical properties of cobalt doped TiO<sub>2 </sub>sol-gel materials</title><author><name sortKey="Samet, L" sort="Samet, L" uniqKey="Samet L" first="L." last="Samet">L. Samet</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut Préparatoires aux Etudes d'Ingénieurs d'El-Manar, Université Tunis El Manar, Campus Universitaire</s1><s2>2092 El Manar</s2><s3>TUN</s3><sZ>1 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>2092 El Manar</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="Ben Nasseur, J" sort="Ben Nasseur, J" uniqKey="Ben Nasseur J" first="J." last="Ben Nasseur">J. Ben Nasseur</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="Chtourou, R" sort="Chtourou, R" uniqKey="Chtourou R" first="R." last="Chtourou">R. Chtourou</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="March, K" sort="March, K" uniqKey="March K" first="K." last="March">K. March</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Laboratoire de Physique des Solides, UMR 8502 CNRS - Université Paris-Sud, Bât 510</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author><author><name sortKey="Stephan, O" sort="Stephan, O" uniqKey="Stephan O" first="O." last="Stephan">O. Stephan</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Laboratoire de Physique des Solides, UMR 8502 CNRS - Université Paris-Sud, Bât 510</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0022698</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 14-0022698 INIST</idno><idno type="RBID">Pascal:14-0022698</idno><idno type="wicri:Area/PascalFrancis/Corpus">000018</idno><idno type="wicri:Area/PascalFrancis/Curation">000277</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000030</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000030</idno><idno type="wicri:doubleKey">1044-5803:2013:Samet L:heat:treatment:effect</idno><idno type="wicri:Area/Main/Merge">000340</idno><idno type="wicri:Area/Main/Curation">000339</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Heat treatment effect on the physical properties of cobalt doped TiO<sub>2 </sub>sol-gel materials</title><author><name sortKey="Samet, L" sort="Samet, L" uniqKey="Samet L" first="L." last="Samet">L. Samet</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut Préparatoires aux Etudes d'Ingénieurs d'El-Manar, Université Tunis El Manar, Campus Universitaire</s1><s2>2092 El Manar</s2><s3>TUN</s3><sZ>1 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>2092 El Manar</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="Ben Nasseur, J" sort="Ben Nasseur, J" uniqKey="Ben Nasseur J" first="J." last="Ben Nasseur">J. Ben Nasseur</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="Chtourou, R" sort="Chtourou, R" uniqKey="Chtourou R" first="R." last="Chtourou">R. Chtourou</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</s1><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Laboratoire de Photovoltaique de Semi-conducteur et de Nanostructure, Centre de Recherches et des Technologies de l'Energie, Technopole borj cedria, Bp 95, hammamm lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="March, K" sort="March, K" uniqKey="March K" first="K." last="March">K. March</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Laboratoire de Physique des Solides, UMR 8502 CNRS - Université Paris-Sud, Bât 510</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author><author><name sortKey="Stephan, O" sort="Stephan, O" uniqKey="Stephan O" first="O." last="Stephan">O. Stephan</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Laboratoire de Physique des Solides, UMR 8502 CNRS - Université Paris-Sud, Bât 510</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author></analytic><series><title level="j" type="main">Materials characterization</title><title level="j" type="abbreviated">Mater. charact.</title><idno type="ISSN">1044-5803</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Materials characterization</title><title level="j" type="abbreviated">Mater. charact.</title><idno type="ISSN">1044-5803</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Doping</term><term>Heat treatments</term><term>Physical properties</term><term>Sol-gel process</term><term>Titanium oxide</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Traitement thermique</term><term>Propriété physique</term><term>Dopage</term><term>Oxyde de titane</term><term>Procédé sol gel</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Dopage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cobalt doped and undoped TiO<sub>2</sub> powders have been prepared by sol-gel technique and annealed at temperatures ranging from 400 °C to 1000 °C. The effects of annealing temperature on the structural, morphological and optical properties have been characterized by X-ray diffraction, transmission electron microscopy, electron energy-loss spectroscopy and diffuse reflectance spectroscopy. For all doped samples there is a general reduction of the band gap energy, in comparison with undoped samples prepared in the same conditions. More specifically, experimental results indicate that cobalt doping, occurring as Co<sup>2+</sup> ion insertion into the TiO<sub>2</sub> (Ti<sup>4+</sup>) host lattice, inhibits the growth of the crystallites and delays the phase transformation from anatase to rutile. Moreover, at high temperature, a secondary phase (CoTiO<sub>3</sub>) is found to coexist with highly crystalline rutile. These structural characteristics are discussed in relation with the observed general trends for the optical properties.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/CobaltMaghrebV1/Data/Main/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000339 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Curation/biblio.hfd -nk 000339 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= CobaltMaghrebV1
|flux= Main
|étape= Curation
|type= RBID
|clé= Pascal:14-0022698
|texte= Heat treatment effect on the physical properties of cobalt doped TiO2 sol-gel materials
}}
| This area was generated with Dilib version V0.6.32. |  |