High-efficient microwave synthesis and characterisation of SrSnO3

Autor(es)

Bohnemann, Joerg ^{[1, 2]} ; Libanori, Rafael ^[1] ; Moreira, Mario L. ^[1] ; Longo, Elson ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, LIEC, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Munster, Dept Chem, D-48149 Munster - Germany

^[3] Univ Estadual Paulista, Inst Quim, LIEC, BR-14800900 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL ENGINEERING JOURNAL; v. 155, n. 3, p. 905-909, DEC 15 2009.
• Citações Web of Science: 26

Resumo

Strontium stannate (SrSnO(3)) nanostructures were obtained by microwave- assisted calcination of a SrSn(OH)(6) precursor powder. Compared to other conventional calcination methods mentioned in the literature, this procedure led to a remarkable decrease of the reaction time and the synthesis temperature owing to direct interaction of radiation with the material. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and photoluminescence measurements were performed. A comparison of the characterisation results obtained by microwave and conventional methods was conducted, and differences concerning the properties of conventionally high-temperature calcined SrSnO(3) from that obtained by microwave-assisted calcination were observed. Furthermore, two different morphologies (nanosticks and nanobrushes) were obtained by a variation of the concentration of the reactants. (C) 2009 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 98/14324-0 - Multidisciplinary Center for Development of Ceramic Materials
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs