Study of the photocatalysis and increase of antimicrobial properties of Fe3+and Pb2+ co-doped ZnO nanoparticles obtained by microwave-assisted hydrothermal method

Paskocimas, Carlos Alberto; Andrade Neto, Nivaldo Freire de; Matsui, Katia Nicolau; Delmonte, Maurício Roberto Bomio; Motta, Fabiana Villela da

Study of the photocatalysis and increase of antimicrobial properties of Fe3+and Pb2+ co-doped ZnO nanoparticles obtained by microwave-assisted hydrothermal method

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dc.contributor.author	Paskocimas, Carlos Alberto
dc.contributor.author	Andrade Neto, Nivaldo Freire de
dc.contributor.author	Matsui, Katia Nicolau
dc.contributor.author	Delmonte, Maurício Roberto Bomio
dc.contributor.author	Motta, Fabiana Villela da
dc.date.accessioned	2021-03-31T20:10:45Z
dc.date.issued	2019-04
dc.description.embargo	2021-05
dc.description.resumo	The difficulty in treating organic effluents and increasing the resistance of microorganisms to conventional treatments promotes the development of new materials for these applications. In this work, it was obtained ZnO co-doped with Fe3+ and Pb2+ (ZnO:xFe:yPb, with x and y varying between 0, 1, 3 and 7 mol%) by microwave-assisted hydrothermal method with a reaction temperature of 140 °C for 30 min. The powders were characterized by X-ray diffraction (XRD), field-scanning electron microscopy (SEM), Brunauer-Emmett-Teller method (BET) ultraviolet diffuse reflectance spectroscopy (DRS-UV), X-ray fluorescence analysis (XRF) and Fourier transform infrared spectroscopy (FTIR). Photocatalytic properties were estimated by the degradation of the methylene blue dye when subjected to UV radiation. The antimicrobial properties were investigated by the formation of inhibition halos against E. coli and S. aureus bacteria. The XRD patterns show that there was no formation of secondary phases, obtaining only the ZnO phase, with hexagonal structure. Through the XRD, it can be seen that the intensity of the characteristic peaks is also reduced as the dopant concentration increases, indicating the appearance of defects in the crystalline lattice. SEM images show that an increase in the dopant concentration promotes a loss in the morphology of ZnO nanoparticles, accompanied by a reduction in their mean size. The codoping reduces the photocatalytic activity of ZnO against the methylene blue dye, but increases the anti-microbial activity against E. coli and S. aureus bacteria	pt_BR
dc.identifier.citation	ANDRADE NETO, N.F. ; MATSUI, K.N. ; PASKOCIMAS, C. A. ; BOMIO, M. R. D. ; MOTTA, F.V. . Study of the photocatalysis and increase of antimicrobial properties of Fe3+and Pb2+ co-doped ZnO nanoparticles obtained by microwave-assisted hydrothermal method. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, v. 93, p. 123-133, 2019. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1369800118313878?via%3Dihub Acesso em: 03 dez. 2020. https://doi.org/10.1016/j.mssp.2018.12.034.	pt_BR
dc.identifier.doi	10.1016/j.mssp.2018.12.034
dc.identifier.issn	1369-8001
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32033
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	ZnO	pt_BR
dc.subject	Co-doping	pt_BR
dc.subject	Photocatalysis	pt_BR
dc.subject	Antimicrobial activity	pt_BR
dc.title	Study of the photocatalysis and increase of antimicrobial properties of Fe3+and Pb2+ co-doped ZnO nanoparticles obtained by microwave-assisted hydrothermal method	pt_BR
dc.type	article	pt_BR