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https://hdl.handle.net/1822/73442
Título: | Photodeposition of silver on Zinc/Calcium ferrite nanoparticles: A contribution to efficient effluent remediation and catalyst reutilization |
Autor(es): | Fernandes, Ricardo Jorge Cunha Magalhães, Carlos A. B. Rodrigues, Ana Rita Oliveira Almeida, B. G. Pires, Ana Pereira, André Miguel Araujo, João Pedro Castanheira, Elisabete M. S. Coutinho, Paulo J. G. |
Palavras-chave: | Magnetic nanoparticles Photocatalytic activities Effluent remediation Silver photodeposition zinc calcium ferrite photodegradation azo dyes Zinc/calcium ferrite |
Data: | 24-Mar-2021 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Nanomaterials |
Citação: | Fernandes, R. J., Magalhães, C. A., Rodrigues, A. R. O., Almeida, B. G., et. al (2021). Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization. Nanomaterials, 11(4), 831 |
Resumo(s): | 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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/73442 |
DOI: | 10.3390/nano11040831 |
e-ISSN: | 2079-4991 |
Versão da editora: | https://www.mdpi.com/2079-4991/11/4/831 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | PHYSICS OF QUANTUM MATERIALS AND BIONANOSTRUCTURES (2018 - ...) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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nanomaterials2021.pdf | Main document | 4,14 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons