High‑sensitivity Hg2+ sensor based on the optical properties of silver nanoparticles synthesized with aqueous leaf extract of Mimusops coriacea
Carregando...
Data
2021
Data de publicação:
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Applied Physics A: Materials Science and Processing
Exportar
Resumo
In the presented manuscript, spherical silver nanoparticles (AgNPs) which were prepared via green chemical method in a
single step take only a few minutes to be ready as a Hg2+
ions detector based on the plasmon band changes. The AgNPs were
obtained with the aqueous extract of Mimusops coriacea leaves. The components of the extract as tannins and polyphenolic
compounds were responsible for the reduction in metal ions and the particles encapsulation. The AgNPs were characterized
by UV–Vis spectroscopy, fluorescence, Fourier transform infrared, dynamic light scattering analysis and transmission
electron microscopy. The AgNps presented an average diameter of 15 nm and a zeta potential value of ~ − 28 mV. They were
monodispersed and stable for up to 180 days. AgNPs are used as a Hg2+
sensor with high sensitivity and selectivity. The
fast, simple and low-cost method is based on changes in the AgNP surface plasmon resonance band (λ ≈ 410 nm) with LOD
6.5 ng/mL (32.5 nM), without functionalization of the AgNPs. The low LOD demonstrates its potential for Hg2+
quantification
in environmental samples such as fish, soil, and effluent discharge.
Como referenciar
LOPES, CARLA R.B.; SANTOS JUNIOR, DARIO; SILVA, FLAVIA R. de O.; COURROL, LILIA C. High‑sensitivity Hg2+ sensor based on the optical properties of silver nanoparticles synthesized with aqueous leaf extract of Mimusops coriacea. Applied Physics A: Materials Science and Processing, v. 127, n. 4, p. 1-13, 2021. DOI: 10.1007/s00339-021-04391-2. Disponível em: http://repositorio.ipen.br/handle/123456789/31999. Acesso em: 07 Jul 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.