Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/22058
Título: | Antimicrobial activity of faujasite zeolites doped with silver |
Autor(es): | Ferreira, Liliana Domingues Reis Fonseca, António Manuel Botelho, Gabriela Almeida Aguiar, Cristina Neves, Isabel C. |
Palavras-chave: | NaY and NaX zeolites Silver Ion exchange XPS characterization Antimicrobial activity |
Data: | 2012 |
Editora: | Elsevier Science BV |
Revista: | Microporous and Mesoporous Materials |
Resumo(s): | The preparation, characterization and antimicrobial activity of faujasite (FAU) zeolites (NaY and NaX) doped with silver are reported. The antimicrobial activity properties were achieved in both FAU zeolites by ion exchange method. The characterization was performed by X-ray diffraction (XRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transformed infrared spectroscopy (FTIR) and chemical analyses. The characterization results indicate that silver were interchanged in the structure of FAU zeolites. Antimicrobial potential of silver zeolites (AgY and AgX) was evaluated using bacteria (Escherichia coli and Bacillus subtilis) and yeast (Saccharomyces cerevisiae and Candida albicans) as sensitive indicator strains. The detected antimicrobial properties were generated by the silver present in the zeolite structure, as confirmed by XPS analysis and antimicrobial activity assays. Both zeolites showed good antimicrobial properties, in particular antibacterial activity, but AgY displayed lower minimum inhibitory concentration (MIC) values than AgX. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/22058 |
DOI: | 10.1016/j.micromeso.2012.05.006 |
ISSN: | 1387-1811 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Molmat - 2012- Antimicrobial activity.pdf Acesso restrito! | 751,8 kB | Adobe PDF | Ver/Abrir |