Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes
We report on the synthesis of core‐shell Au–Ag nanoparticles (NPs) with a high SERS enhancement factor to study the exchange and competition of different coating agents with different binding abilities to simulate the release of NPs into a receiving environment with a number of potential coating age...
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| Định dạng: | BB |
| Ngôn ngữ: | English |
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2020
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| Truy cập trực tuyến: | http://tailieuso.tlu.edu.vn/handle/DHTL/10038 |
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oai:localhost:DHTL-100382020-12-30T09:37:23Z Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes Amininejad, S. Ivleva, N.P. Baumann, T. Dynamic light scattering Engineered inorganic nanoparticle Electromagnetic Natural organic matter We report on the synthesis of core‐shell Au–Ag nanoparticles (NPs) with a high SERS enhancement factor to study the exchange and competition of different coating agents with different binding abilities to simulate the release of NPs into a receiving environment with a number of potential coating agents. Suwannee River natural organic matter (SRNOM), 4‐mercaptobenzoic acid (4‐MBA), and 4‐mercaptopyridine (4‐MPy) were selected molecules for the experiments. The SERS experimental setup parameters such as aggregation size, laser excitation wavelength, and laser power were optimized before further experiments were conducted. It was shown that 4‐MPy has a higher binding affinity than SRNOM and 4‐MBA through the presence of simultaneous S and N atoms, which leads to dominating the coating process when two coating agents are present in the media at the same time. In addition, it was observed that 4‐MPy and 4‐MBA can replace the SRNOM coating on Au–Ag NPs. https://acsess.onlinelibrary.wiley.com/doi/10.1002/vzj2.20076 2020-12-30T09:37:22Z 2020-12-30T09:37:22Z 2020 BB 1539-1663 http://tailieuso.tlu.edu.vn/handle/DHTL/10038 en Vadose Zone Journal, Volume 19, Issue 1 (2020), pp.1-12 |
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Trường Đại học Thủy Lợi |
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| language |
English |
| topic |
Dynamic light scattering Engineered inorganic nanoparticle Electromagnetic Natural organic matter |
| spellingShingle |
Dynamic light scattering Engineered inorganic nanoparticle Electromagnetic Natural organic matter Amininejad, S. Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| description |
We report on the synthesis of core‐shell Au–Ag nanoparticles (NPs) with a high SERS enhancement factor to study the exchange and competition of different coating agents with different binding abilities to simulate the release of NPs into a receiving environment with a number of potential coating agents. Suwannee River natural organic matter (SRNOM), 4‐mercaptobenzoic acid (4‐MBA), and 4‐mercaptopyridine (4‐MPy) were selected molecules for the experiments. The SERS experimental setup parameters such as aggregation size, laser excitation wavelength, and laser power were optimized before further experiments were conducted. It was shown that 4‐MPy has a higher binding affinity than SRNOM and 4‐MBA through the presence of simultaneous S and N atoms, which leads to dominating the coating process when two coating agents are present in the media at the same time. In addition, it was observed that 4‐MPy and 4‐MBA can replace the SRNOM coating on Au–Ag NPs. |
| author2 |
Ivleva, N.P. |
| author_facet |
Ivleva, N.P. Amininejad, S. |
| format |
BB |
| author |
Amininejad, S. |
| author_sort |
Amininejad, S. |
| title |
Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| title_short |
Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| title_full |
Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| title_fullStr |
Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| title_full_unstemmed |
Characterization of coatings on metallic nanoparticles by surface‐enhanced Raman scattering (SERS) for environmental purposes |
| title_sort |
characterization of coatings on metallic nanoparticles by surface‐enhanced raman scattering (sers) for environmental purposes |
| publishDate |
2020 |
| url |
http://tailieuso.tlu.edu.vn/handle/DHTL/10038 |
| work_keys_str_mv |
AT amininejads characterizationofcoatingsonmetallicnanoparticlesbysurfaceenhancedramanscatteringsersforenvironmentalpurposes |
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1787739586554757120 |