Síntese e caracterização de nano e microfios de óxidos metálicos semicondutores

• Autor(a) principal: Silva, Danilo Fernandes da [UNESP]
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203021; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2019-10-16/000918447.pdf
• topic: Antimônio; Nanofios; Filmes semicondutores; Antimony

This work was motivated by the production and study of unidirectional nano and microstructures of antimony oxide (Sb2O3) trying to set a thermodynamic route for a replicable synthesis of these nano and microwires associated with carbothermic reduction technique. For the analysis of these obtained structures structural characterization techniques were applied such as optical microscocopy, FEG-SEM, XRD, EDS, Raman Spectroscopy and Thermogravimetric analysis. From the study of these characterizations of the obtained samples it was possible to set routes that replicated Sb2O3 wires with width and length with sizes around micrometers, presenting optical transparency to the visible light, with cubic and orthorhombic phase geometry, confirming the Raman active modes shown in the bibliography, except one sample that shows a breakdown of Raman selection rule possibly associated with structural defects (oxygen vacancies)