Increased degradation capacity of methylene blue dye using Mg-doped ZnO nanoparticles decorated by Ag0 nanoparticles

Paskocimas, Carlos Alberto; Paula, Celmo Hudson Reis de; Andrade Neto, Nivaldo Freire de; Garcia, Laurênia Martins Pereira; Nascimento, Rubens Maribondo do; Delmonte, Maurício Roberto Bomio; Motta, Fabiana Villela da

Increased degradation capacity of methylene blue dye using Mg-doped ZnO nanoparticles decorated by Ag0 nanoparticles

Página do item simplificado Estatísticas

dc.contributor.author	Paskocimas, Carlos Alberto
dc.contributor.author	Paula, Celmo Hudson Reis de
dc.contributor.author	Andrade Neto, Nivaldo Freire de
dc.contributor.author	Garcia, Laurênia Martins Pereira
dc.contributor.author	Nascimento, Rubens Maribondo do
dc.contributor.author	Delmonte, Maurício Roberto Bomio
dc.contributor.author	Motta, Fabiana Villela da
dc.date.accessioned	2021-04-06T19:16:26Z
dc.date.available	2021-04-06T19:16:26Z
dc.date.issued	2019-02-23
dc.description.resumo	Photocatalytic activity has been widely used for the treatment of organic effluents, mainly those generated by textile industries. Zinc oxide is widely investigated for this application due to its low cost, non-toxicity and high efficiency. In this work, the photocatalytic properties of ZnO:xMg (x = 1 mol.%, 2 mol.%, 4 mol.% and 8 mol.%) decorated with Ag0 were investigated against methylene blue dye (MB). Initially, the nanostructures of ZnO:xMg were produced by the microwave-assisted hydrothermal method, and the nanoparticles of Ag0 were deposited by ultraviolet (UV) photoreduction. The structural characteristics of the powders were determined by x-ray diffraction, the morphologies were investigated by field emission scanning electron microscopy (FE-SEM) and the optical absorbance of the photocatalysts was characterized by the diffuse reflectance spectra [UV–visible light (UV–Vis)]. The photocatalytic properties were estimated by degradation of MB, and the capacity for reuse of the powders was estimated by application in three consecutive cycles. Undoped ZnO powders reduced 84% of MB concentration, while the ZnO:8%Mg sample reduced 97% of it, indicating that doping with Mg2+ is efficient in increasing the degradation capacity of ZnO against MB degradation. The deposition of metallic silver nanoparticles on the ZnO surface considerably increases the photocatalytic efficiency, in which after 18 min, the 8%Mg sample completely degraded the MB. The reuse tests showed that the powders maintain their photocatalytic activity after three cycles and can be used for such application without generating secondary residues	pt_BR
dc.identifier.citation	PAULA, C. H. R. ; ANDRADE NETO, N. F. ; GARCIA, L. M. P. ; Nascimento, R. M. ; PASKOCIMAS, C. A. ; BOMIO, M. R. D. ; MOTTA, F. V. . Increased Degradation Capacity of Methylene Blue Dye Using Mg-doped ZnO Nanoparticles Decorated by Ag0 Nanoparticles. Journal of Electronic Materials, v. 1, p. 1, 2019. Disponível em: https://link.springer.com/article/10.1007%2Fs11664-019-07059-z Acesso: 03 dez. 2020. https://doi.org/10.1007/s11664-019-07059-z.	pt_BR
dc.identifier.doi	10.1007/s11664-019-07059-z
dc.identifier.issn	0361-5235
dc.identifier.issn	1543-186X
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32054
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	ZnO:xMg	pt_BR
dc.subject	Hydrothermal method	pt_BR
dc.subject	Ag0 photoreduction	pt_BR
dc.subject	Photocatalytic reuse	pt_BR
dc.title	Increased degradation capacity of methylene blue dye using Mg-doped ZnO nanoparticles decorated by Ag0 nanoparticles	pt_BR
dc.type	article	pt_BR