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| Formato: | Artículo Open Access |
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Wiley
2024
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| Acceso en línea: | https://aocs.onlinelibrary.wiley.com/doi/10.1002/jsde.12821 |
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| author | Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga |
| author_facet | Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga |
| collection | Wiley Open Access |
| contents | Silver nanoparticle synthesis assisted by micelles for the development of a colorimetric nanobiosensor capable of detecting contaminants in water Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga Journal of Surfactants and Detergents AbstractWe report the synthesis of silver nanoparticles (Ag NPs) functionalized with L‐cysteine (Ag‐cys NPs) for colorimetric detection of contaminants: Hg2+, Pb2+, Cr6+ (CrO42−/Cr2O72), and As3+ in water samples. AgNPs synthesized were obtained in water from the mixture of the cationic and non‐ionic surfactants, cetyltrimethylammonium bromide (CTAB) and nonylphenol ethoxylate (NP‐10), respectively. Physicochemical characterization demonstrated a monomodal distribution of spherical nanoparticles with an average size of 8.25 nm. The stability of the Ag‐cys NPs was evaluated by determining the surface charge, which was found to be +27.95 mV, indicating the stability of Ag‐cys NPs against flocculation. The interaction between Ag‐cys NPs and solutions of contaminants was studied. This was done by measuring the shift in LSPR band of Ag NPs covered with cys in the region of 400–450 nm. We observed a change or disappearance of color visually, indicating aggregation or oxidation of the Ag NPs. Concentration of cys, as well as the pH of the nanoparticles, were crucial in studying the aggregation process. This is a preliminary study in search of benefits such as low cost, in situ usability, ease of use, and rapid response making it a potential alternative to traditionally employed spectroscopic methods. 10.1002/jsde.12821 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/jsde.12821 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_jsde_12821 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2024 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Silver nanoparticle synthesis assisted by micelles for the development of a colorimetric nanobiosensor capable of detecting contaminants in water Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga Journal of Surfactants and Detergents Silver nanoparticle synthesis assisted by micelles for the development of a colorimetric nanobiosensor capable of detecting contaminants in water Rossannie Guasamucare Emma Parente Juan Carlos Pereira Livia Arizaga Journal of Surfactants and Detergents AbstractWe report the synthesis of silver nanoparticles (Ag NPs) functionalized with L‐cysteine (Ag‐cys NPs) for colorimetric detection of contaminants: Hg2+, Pb2+, Cr6+ (CrO42−/Cr2O72), and As3+ in water samples. AgNPs synthesized were obtained in water from the mixture of the cationic and non‐ionic surfactants, cetyltrimethylammonium bromide (CTAB) and nonylphenol ethoxylate (NP‐10), respectively. Physicochemical characterization demonstrated a monomodal distribution of spherical nanoparticles with an average size of 8.25 nm. The stability of the Ag‐cys NPs was evaluated by determining the surface charge, which was found to be +27.95 mV, indicating the stability of Ag‐cys NPs against flocculation. The interaction between Ag‐cys NPs and solutions of contaminants was studied. This was done by measuring the shift in LSPR band of Ag NPs covered with cys in the region of 400–450 nm. We observed a change or disappearance of color visually, indicating aggregation or oxidation of the Ag NPs. Concentration of cys, as well as the pH of the nanoparticles, were crucial in studying the aggregation process. This is a preliminary study in search of benefits such as low cost, in situ usability, ease of use, and rapid response making it a potential alternative to traditionally employed spectroscopic methods. 10.1002/jsde.12821 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Silver nanoparticle synthesis assisted by micelles for the development of a colorimetric nanobiosensor capable of detecting contaminants in water |
| topic | Journal of Surfactants and Detergents |
| url | https://aocs.onlinelibrary.wiley.com/doi/10.1002/jsde.12821 |