Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization

Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization

The efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc/calcium mixed ferrite nanoparticles prepared by the sol–gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtain...

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Main Authors: Ricardo J. C. Fernandes, Carlos A. B. Magalhães, Ana Rita O. Rodrigues, Bernardo G. Almeida, Ana Pires, André Miguel Pereira, João Pedro Araujo, Elisabete M. S. Castanheira, Paulo J. G. Coutinho
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Nanomaterials
Subjects:
zinc/calcium ferrite
silver photodeposition
photodegradation
azo dyes
Online Access:https://www.mdpi.com/2079-4991/11/4/831
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spelling doaj-23ea83c89a034540935af30d622d595c2021-03-25T00:03:16ZengMDPI AGNanomaterials2079-49912021-03-011183183110.3390/nano11040831Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst ReutilizationRicardo J. C. Fernandes0Carlos A. B. Magalhães1Ana Rita O. Rodrigues2Bernardo G. Almeida3Ana Pires4André Miguel Pereira5João Pedro Araujo6Elisabete M. S. Castanheira7Paulo J. G. Coutinho8Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalIFIMUP-Instituto de Física dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, PortugalIFIMUP-Instituto de Física dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, PortugalIFIMUP-Instituto de Física dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, PortugalPhysics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalThe efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc/calcium mixed ferrite nanoparticles prepared by the sol–gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtained zinc/calcium ferrites are mainly cubic-shaped nanoparticles sized 15 ± 2 nm determined from TEM and XRD and an optical bandgap of 1.6 eV. Magnetic measurements indicate a superparamagnetic behavior with saturation magnetizations of 44.22 emu/g and 27.97 emu/g, respectively, for Zn/Ca ferrite and Zn/Ca ferrite with photodeposited silver. The zinc/calcium ferrite nanoparticles with photodeposited silver showed efficient photodegradation of the textile azo dyes C.I. Reactive Blue 250 and C.I. Reactive Yellow 145. Subsequent cycles of the use of the photocatalyst indicate the possibility of magnetic recovery and reutilization without a significant loss of efficiency.https://www.mdpi.com/2079-4991/11/4/831zinc/calcium ferritesilver photodepositionphotodegradationazo dyes
collection DOAJ
language English
format Article
sources DOAJ
author Ricardo J. C. Fernandes
Carlos A. B. Magalhães
Ana Rita O. Rodrigues
Bernardo G. Almeida
Ana Pires
André Miguel Pereira
João Pedro Araujo
Elisabete M. S. Castanheira
Paulo J. G. Coutinho
spellingShingle Ricardo J. C. Fernandes
Carlos A. B. Magalhães
Ana Rita O. Rodrigues
Bernardo G. Almeida
Ana Pires
André Miguel Pereira
João Pedro Araujo
Elisabete M. S. Castanheira
Paulo J. G. Coutinho
Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
Nanomaterials
zinc/calcium ferrite
silver photodeposition
photodegradation
azo dyes
author_facet Ricardo J. C. Fernandes
Carlos A. B. Magalhães
Ana Rita O. Rodrigues
Bernardo G. Almeida
Ana Pires
André Miguel Pereira
João Pedro Araujo
Elisabete M. S. Castanheira
Paulo J. G. Coutinho
author_sort Ricardo J. C. Fernandes
title Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
title_short Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
title_full Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
title_fullStr Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
title_full_unstemmed Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization
title_sort photodeposition of silver on zinc/calcium ferrite nanoparticles: a contribution to efficient effluent remediation and catalyst reutilization
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2021-03-01
description The efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc/calcium mixed ferrite nanoparticles prepared by the sol–gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtained zinc/calcium ferrites are mainly cubic-shaped nanoparticles sized 15 ± 2 nm determined from TEM and XRD and an optical bandgap of 1.6 eV. Magnetic measurements indicate a superparamagnetic behavior with saturation magnetizations of 44.22 emu/g and 27.97 emu/g, respectively, for Zn/Ca ferrite and Zn/Ca ferrite with photodeposited silver. The zinc/calcium ferrite nanoparticles with photodeposited silver showed efficient photodegradation of the textile azo dyes C.I. Reactive Blue 250 and C.I. Reactive Yellow 145. Subsequent cycles of the use of the photocatalyst indicate the possibility of magnetic recovery and reutilization without a significant loss of efficiency.
topic zinc/calcium ferrite
silver photodeposition
photodegradation
azo dyes
url https://www.mdpi.com/2079-4991/11/4/831
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