Síntese e caracterização de nanopartículas de ZnO obtidas por calcinação de nanofios eletrofiados para possivel aplicação como fotocatalisadores

Detalhes bibliográficos
Ano de defesa: 2018
Autor(a) principal: Silva, Alessandra Eugênio Carli da lattes
Orientador(a): Rosa, Maurício Ferreira da lattes
Banca de defesa: Rosa, Maurício Ferreira da lattes, Baricatti, Reinaldo Aparecido lattes, Matos, Roberto de lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual do Oeste do Paraná
Toledo
Programa de Pós-Graduação: Programa de Pós-Graduação em Ciências Ambientais
Departamento: Centro de Engenharias e Ciências Exatas
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede.unioeste.br/handle/tede/3743
Resumo: The presence of medicines in potable water is one of the biggest concernings in public health, once that there is not a lot knownledge about their chronical effects in a long term intake. The potential risk of contamination in the supplied water has motivated new researches aiming the increasing of the efficiency on removing these emerging pollutants. Among these researches the photocathalysis has widelly been studied due its efficiency on decontaminating chemical pollutants, effluents treatment and residual water purification. Photochemical processes presents positive results on the degradation of organic pollutants compounds and the possibility of obtaining photocataliysts in nanometric scales through the electrophase makes it even more efficient. In this work, by electrophase, was obtained a polimeric solution containing PBAT/ZnO, ZnO particlules with reduced scales. The charcterization of the synthetized material was made by X-Ray Difraction (XRD), Differential Thermal Analysis (DTA) Differential Scanning Calorimetry (DSC), Scanning Electronic Microscopy (SEM) and UV-Vis Spectrophotometry. From the obtained results it was possible to conclude that, the reduced distance between the needle and the collector and electric tension used during the electronspinning of ZnO/PBAT nanowires, influency on getting fibres with smaller diameters, from which there is a possibility of obtaining nanoparticles of ZnO, with mean diameter of 46,96 nm, in its crystalline characteristic phase and equivalent to the commercial material by the electrophased process, however, with the smaller particules, which suggests that with the increasing of the contact surface the compound to be oxidized, the phocatalysis process may be favored.