Effect of CeO2 content in morphology and optoelectronic properties of TiO2-CeO2 nanoparticles in visible light organic degradation

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dc.citation.journalTitleMATERIALS SCIENCE IN SEMICONDUCTOR PROCESSINGspa
dc.contributor.authorCano-Franco, JC
dc.contributor.authorAlvarez-Lainez, M
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Diseño
dc.contributor.researchgroupIngeniería de Diseño (GRID)spa
dc.date.accessioned2021-04-12T21:15:02Z
dc.date.available2021-04-12T21:15:02Z
dc.date.issued2019-02-01
dc.description.abstractTiO2 is a semiconductor widely used in photocatalytic degradation of organic pollutants due to its band gap energy. However, its absorption range is restricted only to UV radiation that is less than 10% of solar light. With the aim of increasing the adsorption area on TiO2 nanoparticles a modified sol-gel method was used to produce a smaller particle size, and to extend the absorption range to the visible spectrum, TiO2 nanoparticles were synthesized with different CeO2 contents to generate semiconductor heterojunction between them. The crystallographic, morphological, and optoelectronic characteristics of these TiO2-CeO2 nanoparticles were studied, and two crystalline phases were differentiated: anatase for TiO2 and fluorite for CeO2. An increase in the CeO2 content produced crystallite sizes between 6.5 nm and 12.0 nm. TiO2-CeO2 nanoparticles showed morphological properties such as small particle size, heterogeneous surface and high BET surface area compared to bare commercial TiO2. These features involve a positive effect of CeO2 in TiO2 nanoparticles surface, thus TiO2-CeO2 nanoparticles exhibit enhanced optoelectronic properties caused by a decrease in the effective band gap and red-shift in the electromagnetic spectrum. In addition, methylene blue degradation showed that TiO2-CeO2 nanoparticles are suitable for high photocatalytic activity application under visible light. © 2018 Elsevier Ltdeng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8500
dc.identifier.doi10.1016/j.mssp.2018.10.017
dc.identifier.issn13698001
dc.identifier.issn18734081
dc.identifier.otherWOS;000450320600026
dc.identifier.otherSCOPUS;2-s2.0-85055619940
dc.identifier.urihttp://hdl.handle.net/10784/28997
dc.language.isoengeng
dc.publisherELSEVIER SCI LTD
dc.relationDOI;10.1016/j.mssp.2018.10.017
dc.relationWOS;000450320600026
dc.relationSCOPUS;2-s2.0-85055619940
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85055619940&doi=10.1016%2fj.mssp.2018.10.017&partnerID=40&md5=a79f4dd94da1fc4ac83e3e680ecf9056
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1369-8001
dc.sourceMATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
dc.subject.keywordAbsorption spectroscopyeng
dc.subject.keywordAromatic compoundseng
dc.subject.keywordCerium oxideeng
dc.subject.keywordDyeseng
dc.subject.keywordEnergy gapeng
dc.subject.keywordFluorspareng
dc.subject.keywordHeterojunctionseng
dc.subject.keywordLighteng
dc.subject.keywordMagnetic semiconductorseng
dc.subject.keywordNanoparticleseng
dc.subject.keywordOrganic pollutantseng
dc.subject.keywordOrganic polymerseng
dc.subject.keywordParticle sizeeng
dc.subject.keywordSol-gel processeng
dc.subject.keywordSol-gelseng
dc.subject.keywordSynthesis (chemical)eng
dc.subject.keywordTitanium dioxideeng
dc.subject.keywordBand gap energyeng
dc.subject.keywordHigh photocatalytic activitieseng
dc.subject.keywordMethylene blue degradationseng
dc.subject.keywordOptoelectronic characteristicseng
dc.subject.keywordOptoelectronic propertieseng
dc.subject.keywordPhoto catalytic degradationeng
dc.subject.keywordSemiconductor heterojunctionseng
dc.subject.keywordTiO2eng
dc.subject.keywordOxide semiconductorseng
dc.titleEffect of CeO2 content in morphology and optoelectronic properties of TiO2-CeO2 nanoparticles in visible light organic degradationeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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