Al3+ environments in nanostructured ZnAl2O4 and their effects on the luminescence properties

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorda Silva, Alison A.
dc.creatorGoncalves, Agnaldo S.
dc.creatorDavolos, Marian Rosaly
dc.creatorSantagneli, Silvia H.
dc.date2014-05-20T14:18:30Z
dc.date2016-10-25T17:40:34Z
dc.date2014-05-20T14:18:30Z
dc.date2016-10-25T17:40:34Z
dc.date2008-11-01
dc.date.accessioned2017-04-05T22:28:26Z
dc.date.available2017-04-05T22:28:26Z
dc.identifierJournal of Nanoscience and Nanotechnology. Stevenson Ranch: Amer Scientific Publishers, v. 8, n. 11, p. 5690-5695, 2008.
dc.identifier1533-4880
dc.identifierhttp://hdl.handle.net/11449/25573
dc.identifierhttp://acervodigital.unesp.br/handle/11449/25573
dc.identifier10.1166/jnn.2008.218
dc.identifierWOS:000261390800012
dc.identifierhttp://dx.doi.org/10.1166/jnn.2008.218
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/870440
dc.descriptionSingle-phase zinc aluminate (ZnAl(2)O(4)) with the spinel structure was successfully obtained by the Pechini method at different calcining temperatures for 4 hours. The nanoparticles are highly crystalline with no impurities related to ZnO or Al(2)O(3) residues. The microstructural environment of aluminium ions changes with heat treatment temperature, as observed by Fourier transform infrared spectroscopy. The spinel structure might present two different AlO(6) sites as evidenced by (27)Al solid-state magic-angle-spinning nuclear magnetic resonance spectra. Some AlO(4) sites were also detected for samples calcined at a temperature lower than 900 degrees C. The photoluminescence spectra show that the emission can be tuned depending on the calcining temperature. This effect was discussed on the basis of symmetry and oxygen vacancies.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherAmer Scientific Publishers
dc.relationJournal of Nanoscience and Nanotechnology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEmission Tuning
dc.subjectSpinel Structure
dc.subjectZinc Aluminate
dc.titleAl3+ environments in nanostructured ZnAl2O4 and their effects on the luminescence properties
dc.typeOtro


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