Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/91639
Título: | Valorization of plant by-products in the biosynthesis of silver nanoparticles with antimicrobial and catalytic properties |
Autor(es): | Rocha, Verónica Patrícia Moreira Ferreira-Santos, Pedro Aguiar, Cristina Neves, Isabel C. Tavares, T. |
Palavras-chave: | Plant by-products Sustainability Silver nanoparticles Disinfection Photodegradation Cost analysis |
Data: | Fev-2024 |
Editora: | Springer Nature |
Revista: | Environmental Science and Pollution Research |
Citação: | Rocha, Verónica; Ferreira-Santos, Pedro; Aguiar, Cristina; Neves, Isabel C.; Tavares, Teresa, Valorization of plant by-products in the biosynthesis of silver nanoparticles with antimicrobial and catalytic properties. Environmental Science and Pollution Research, 31(9), 14191-14207, 2024 |
Resumo(s): | Biosynthesis based on natural compounds has emerged as a sustainable approach for the production of metallic nanoparticles (MNP). The main objective of this study was to biosynthesize stable and multifunctional silver nanoparticles (AgNP) using different plant by-products as reducers and capping agents. Extracts obtained from Eucalyptus globulus, Pinus pinaster, Citrus sinensis, Cedrus atlantica and Camellia sinensis by-products, were evaluated. From all plant by-products tested, aqueous extract of eucalyptus leaves (EL), green tea (GT) and black tea (BT) were selected due to their higher antioxidant phenolic content and were individually employed as reducers and capping agents to biosynthesize AgNP. The green AgNP showed zeta potential values of -31.8 to -36.3 mV, with a wide range of particle sizes (40.6 to 86.4 nm), depending on the plant extract used. Green AgNP exhibited an inhibitory effect against various pathogenic bacteria, including Gram-negative (P. putida, E. coli, Vibrio spp.) and Gram-positive (B. megaterium, S. aureus, S. equisimilis) bacteria with EL-AgNP being the nanostructure with the greatest antimicrobial action. EL-AgNP showed an excellent photodegradation of indigo carmine (IC) dye under direct sunlight, with a removal percentage of up to 100\\% after 75 min. A complete cost analysis revealed a competitive total cost range of 8.0--9.0 \texteuro/g for the biosynthesis of AgNP. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/91639 |
DOI: | 10.1007/s11356-024-32180-w |
ISSN: | 0944-1344 |
Versão da editora: | http://www.springer.com/environment/journal/11356 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_57809_1.pdf | 1,73 MB | Adobe PDF | Ver/Abrir |