Bio-mineralized tin/bismuth oxide nanoparticles with silk fibroins for efficient electrochemical detection of 2-nitroaniline in river water samples.
Environ Res
; 221: 115285, 2023 03 15.
Article
em En
| MEDLINE
| ID: mdl-36640938
ABSTRACT
In recent years, the usage of nitroaniline has played a vital role in pharmaceutical formulations as it is a crucial ingredient in the synthesis of pesticides and dyes. However, the level of nitroaniline existing in industrial waste keeps rising the environmental contamination. Thus, monitoring of active nitro-residuals becomes more significant in reducing the toxicity of the ecosystem. Therefore, we have taken an attempt to evaluate the hazardous pollutant 2-nitroaniline (2-NA) using the electrocatalyst viz., tin-doped bismuth oxide inserted on a biopolymer silk fibroin composite modified glassy carbon electrode (Sn-Bi2O3/SF@GCE). The Sn-Bi2O3/SF nanocomposite was synthesized through hydrothermal and co-precipitation methods. The physicochemical properties of the prepared Sn-Bi2O3/SF hybrid composite were examined by conventional microscopy and spectroscopic techniques like FE-SEM, HR-TEM, XRD, FTIR, Raman, and XPS. Furthermore, the bio-mineralized Sn-Bi2O3/SF@GCE displayed a wide linear range (0.009 µM-785.7 µM) and a lower detection limit (3.5 nM) with good sensitivity for 2-NA detection under the optimum conditions. The result shows that the Sn-Bi2O3/SF-modified GCE has good reproducibility, repeatability, and excellent selectivity for 2-NA detection in the presence of other co-interfering compounds. Moreover, the practical applicability of Sn-Bi2O3/SF@GCE sensors was investigated for the effective detection of 2-NA in real river water samples, revealing good recovery results.
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Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Nanopartículas
/
Fibroínas
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Environ Res
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Taiwan