Formation of copper oxide II in polymer solution-blow-spun fibers and the successful non-woven ceramic production

Autor(es)

Bitencourt da Silva, Alex Nascimento ; de Moura, Marcia Regina ; Zadorosny, Rafael

• Tipo de documento: Artigo Científico
• Fonte: Materials Chemistry and Physics; v. 278, p. 7-pg., 2022-02-15.

Resumo

Copper oxide II is a p-type semiconductor that can be used in several applications. Focusing on producing such material using an easy and low-cost technique, we followed an acetate one-pot-like route for producing a polymer precursor solution with different acetates:PVP (polyvinylpyrrolidone) weight ratios. Then, composite nanofibers were produced using the solution blow spinning (SBS) technique. The ceramic CuO samples were obtained after a calcination process at 600 ? for 2 h, applying a heating rate of 0.5 ? /min. Non-woven fabric like ceramic samples with average diameters lower than 300 nm were successfully obtained. SEM images show relatively smooth fibers with a granular morphology. XRD shows the formation of randomly oriented grains of CuO. In addition, FTIR and XRD analyses show the CuO formation before the heat treatment. Thus, a chemical reaction sequence was proposed to explain the results. (AU)

• Processo FAPESP: 16/12390-6 - Supercondutividade em escalas macro e mesoscópica: síntese de materiais cerâmicos e simulações computacionais usando a teoria TDGL
• Beneficiário: Rafael Zadorosny
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/06170-1 - Incorporação de nanocelulose bacteriana em matrizes poliméricas hidrossolúveis comestíveis para o estudo da viabilidade no preparo de novos nanocompósitos
• Beneficiário: Márcia Regina de Moura Aouada
• Modalidade de apoio: Auxílio à Pesquisa - Regular