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https://hdl.handle.net/1822/73481
Título: | Influence of the physical properties on the antibacterial and photocatalytic behavior of Ag-doped indium sulfide film deposited by spray pyrolysis |
Autor(es): | Tiss, Belgacem Moualhi, Youssef Bouguila, Noureddine Kraini, Mabrouk Alaya, Sahbi Croitoru, Catalin Ghiuta, Ioana Cristea, Daniel Patroi, Delia Moura, C. Cunha, Luís |
Palavras-chave: | Indium sulfide Ag doping Electrical properties Impedance spectroscopy Conduction processes Photocatalysis Antibacterial |
Data: | 24-Mar-2021 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Coatings |
Citação: | Tiss, B.; Moualhi, Y.; Bouguila, N.; Kraini, M.; Alaya, S.; Croitoru, C.; Ghiuta, I.; Cristea, D.; Patroi, D.; Moura, C.; Cunha, L. Influence of the Physical Properties on the Antibacterial and Photocatalytic Behavior of Ag-Doped Indium Sulfide Film Deposited by Spray Pyrolysis. Coatings 2021, 11, 370. https://doi.org/10.3390/coatings11040370 |
Resumo(s): | Spray pyrolysis was used to deposit indium sulfide (In<sub>2</sub>S<sub>3</sub>) films, with or without silver doping. The films are polycrystalline, and the inclusion of Ag in the In<sub>2</sub>S<sub>3</sub> structure leads to the formation of a solid solution, with the crystallite size of the order of tens of nanometers. In<sub>2</sub>S<sub>3</sub> films exhibit a semiconductive behavior, and the incorporation of Ag leads to an increase of the charge carrier concentration, enhancing the electrical conductivity of the films. The small polaron hopping mechanism, deduced by the fittings according to the double Jonscher variation, explains the evolution of the direct current (dc) conductivity at high temperature of the Ag-doped indium sulfide. From impedance spectroscopy, it was found that the doped film presents dielectric relaxation, and Nyquist diagrams indicate the importance of the grain and the grain boundaries’ contributions to the transport phenomena. The physical characteristics of the films have an influence on the photocatalytic performance, achieving photodegradation efficiency above 80% (85.5% in the case of Ag doping), and on the antibacterial activity. The obtained results indicate that indium sulfide films are good candidates for environmental and biological applications, confirming a multifunctional nature. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/73481 |
DOI: | 10.3390/coatings11040370 |
e-ISSN: | 2079-6412 |
Versão da editora: | https://www.mdpi.com/2079-6412/11/4/370 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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coatings-11-00370.pdf | 24,65 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons