Structural characterization of SnO nanoparticles synthesized by the hydrothermal and microwave routes

Autor(es)

Dias, J. S. ^[1] ; Batista, F. R. M. ^[1] ; Bacani, R. ^[1] ; Triboni, E. R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo EEL USP, Escola Engn Lorena, Lab Nanotechnol & Proc Engn NEP, BR-12602810 Lorena, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 10, n. 1 JUN 10 2020.
• Citações Web of Science: 0

Resumo

SnO particles were synthesized by an alkali-assisted hydrothermal and microwave methods. The aqueous-based reactions were carried out at pH similar to 8, under inert atmosphere (Ar). The reactions were taken under different times, and a full XRD structural analysis was made to evaluate the conversion from the Sn6O4(OH)(4) intermediate to SnO particles. Williamson-Hall analysis showed that the size and strain of the SnO particles were time and route treatment dependent. Microwave heating yielded a single tetragonal SnO phase after 1h of thermal treatment, and TEM images revealed spherical-shaped SnO nanoparticles with an average size of 9(1) nm. While by the hydrothermal treatment single SnO phase was obtained only after 4hours, yielding non-uniform and elongated particles with sub-micrometric size. A dissolution-recrystallization process was taken into account as the mechanism for SnO particles formation, in which hydroxylated complexes, Sn-2(OH)(6)(-2), then condense to form the oxide. The time-shorting reaction provided by the microwave-assisted synthesis may be attributed to better heat distribution. (AU)

• Processo FAPESP: 17/13839-0 - Sistemas orgânicos e inorgânicos para a preparação de meso e nanoestruturas
• Beneficiário: Eduardo Rezende Triboni
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/08166-5 - Química em interfaces: interações de fármacos, peptídios e enzimas com membranas modelos
• Beneficiário: Iolanda Midea Cuccovia
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/17708-4 - Síntese de óxido de estanho (II) por micro-ondas
• Beneficiário: Juliana da Silva Dias
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica