Morphological modifications and surface amorphization in ZnO sonochemically treated nanoparticles

Autor(es)

Arruda, Larisa B. ^[1] ; Orlandi, Marcelo O. ^[2] ; Lisboa-Filho, Paulo Noronha ^[3]

Afiliação do(s) autor(es)

^[1] POSMAT Programa Posgrad Ciencia & Tecnol Mat UNES, Bauru - Brazil

^[2] UNESP Univ Estadual Paulista, Inst Quim, Dept Quim Fis, Araraquara - Brazil

^[3] UNESP Univ Estadual Paulista, Fac Ciencias, Dept Fis, Bauru - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ULTRASONICS SONOCHEMISTRY; v. 20, n. 3, p. 799-804, MAY 2013.
• Citações Web of Science: 6

Resumo

Application of nanoscale materials in photovoltaic and photocatalysis devices and photosensors are dramatically affected by surface morphology of nanoparticles, which plays a fundamental role in the understanding of the physical and chemical properties of nanoscale materials. Zinc oxide nanoparticles with an average size of 20 nm were obtained by the use of a sonochemical technique. X-ray diffraction (XRD) associated to Rietveld refinements and transmission electron microscopy (TEM) were used to study structural and morphological characteristics of the samples. An amorphous shell approximately 10 nm thick was observed in the ultrasonically treated sample, and a large reduction in particle size and changes in the lattice parameters were also observed. (C) 2012 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 09/14628-6 - Nanoestruturas óxidas magnéticas diluídas
• Beneficiário: Paulo Noronha Lisboa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular