Hierarchical growth of ZnO nanorods over SnO2 seed layer: insights into electronic properties from photocatalytic activity

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dc.contributor.authorDa Silva, Luis F. [UNESP]
dc.contributor.authorLopes, Osmando F.
dc.contributor.authorCatto, Ariadne C.
dc.contributor.authorAvansi, Waldir
dc.contributor.authorBernardi, Maria I. B.
dc.contributor.authorLi, Maximo Siu
dc.contributor.authorRibeiro, Caue
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2018-11-26T17:55:45Z
dc.date.available2018-11-26T17:55:45Z
dc.date.issued2016-01-01
dc.description.abstractThe use of nanostructured heterojunctions has been a promising option for hindering the charge recombination and thus enhancing the photocatalytic performance of catalysts. Here we present a simple strategy to hierarchically grow heterostructures using a hydrothermal treatment route. A buffer SnO2 film was produced by a sol-gel derived method, resulting in a film of approximately 100 nm composed of 5-10 nm nanoparticles. X-ray diffraction and scanning electron microscopy revealed preferential growth of the nanorod-like structures along the c-axis perpendicular to the SnO2 film, with an average nanorod diameter and length of approximately 160 nm and 1.5 mu m, respectively. The photoluminescence spectra of ZnO-SnO2 revealed a reduction in UV emission compared to individual ZnO nanorods, indicating that the recombination of the photogenerated carriers was inhibited in the heterojunction. This behavior was confirmed by evaluating the photocatalytic performance of such films against methylene blue degradation, showing that the as-prepared ZnO-SnO2 heterojunction was superior to the individual semiconductors, ZnO and SnO2.en
dc.description.affiliationUniv Estadual Paulista, Inst Quim, LIEC, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationEMBRAPA Instrumentacao, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Inst Fis, BR-13565905 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, LIEC, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipBrazilian Nanotechnology National Laboratory, LNNano, Campinas, SP, Brazil
dc.description.sponsorshipIdCNPq: 442076/2014-2
dc.description.sponsorshipIdFAPESP: 2013/09573-3
dc.description.sponsorshipIdFAPESP: 2013/07296-2
dc.description.sponsorshipIdFAPESP: 2012/15170-6
dc.description.sponsorshipIdFAPESP: 2013/13888-0
dc.description.sponsorshipIdBrazilian Nanotechnology National Laboratory, LNNano, Campinas, SP, Brazil: XPS-18304
dc.description.sponsorshipIdBrazilian Nanotechnology National Laboratory, LNNano, Campinas, SP, Brazil: TEM-18566
dc.format.extent2112-2118
dc.identifierhttp://dx.doi.org/10.1039/c5ra23824b
dc.identifier.citationRsc Advances. Cambridge: Royal Soc Chemistry, v. 6, n. 3, p. 2112-2118, 2016.
dc.identifier.doi10.1039/c5ra23824b
dc.identifier.issn2046-2069
dc.identifier.urihttp://hdl.handle.net/11449/164704
dc.identifier.wosWOS:000368191100052
dc.language.isoeng
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofRsc Advances
dc.relation.ispartofsjr0,863
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleHierarchical growth of ZnO nanorods over SnO2 seed layer: insights into electronic properties from photocatalytic activityen
dc.typeArtigo
dcterms.rightsHolderRoyal Soc Chemistry
unesp.author.orcid0000-0002-8908-6343[7]
unesp.author.orcid0000-0001-8062-7791[8]

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