Nanostructured CeO2:Eu3+ luminophore obtained by low temperature benzenetricarboxylate method

Autor(es)

Silva, Ivan G. N. ^[1] ; Morais, Alysson E. ^[1] ; Zambon, Luis F. M. ^[2] ; Brito, Hermi F. ^[2] ; Mustafa, Danilo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Optical Materials; v. 76, p. 48-55, FEB 2018.
• Citações Web of Science: 1

Resumo

Nanostructured CeO2:Eu3+ was synthesized by low temperature thermolysis (500 degrees C, 1 h) of RE3+-benzenetricarboxylate precursors (RE: Rare Earth). This preparation method is shown to produce easily dispersible highly crystalline nanoparticles with sharp crystallite size distribution, presenting large advantage over widespread available processes. The resulting nanomaterial (empty set 7-48 nm obtained from TEM and PXRD analysis) presents exclusively Ce-IV oxidation state according to XANES measurements. The doping process provides a solid solution with Eu3+ occupying the octahedral Celv site, indicated by the photoluminescent characterization of the nanoparticles. The use of aqueous solvent, simple experimental apparatus, low energy input and easily accessible precursors make the benzenetricarboxylate method attractive for low cost nanoparticle synthesis. (C) 2017 Published by Elsevier B.V. (AU)

• Processo FAPESP: 15/19210-0 - Hidróxidos duplos lamelares (LDH) nanoestruturados com propriedades de up e down-conversion para aplicações como sensibilizadores em células solares
• Beneficiário: Danilo Mustafa
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores