Біметальні наночастинки сплаву золото/срібло синтезовані у присутності триптофану
The stable colloidal solutions of monometallic and bimetallic gold and silver nanoparticles (NPs) have been obtained in the presence of amino acid tryptophan. For the synthesis of bimetallic composition the metals were used in a molar ratio of Ag:Au = 3:1, 1:1 and 1:3. The only one plasmon resonance...
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| Date: | 2016 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2016
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| Online Access: | https://surfacezbir.com.ua/index.php/surface/article/view/612 |
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| Journal Title: | Surface |
| Download file: |  |
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Surface| Summary: | The stable colloidal solutions of monometallic and bimetallic gold and silver nanoparticles (NPs) have been obtained in the presence of amino acid tryptophan. For the synthesis of bimetallic composition the metals were used in a molar ratio of Ag:Au = 3:1, 1:1 and 1:3. The only one plasmon resonance band in absorption spectra was located between the bands inherent to the individual metals and it was characteristic for “alloy” type bimetallic AgAu NPs. The position of its maximum strongly depends on the Ag:Au molar ratio. The surface of all synthesized nanoparticles carries a negative charge due to the stabilizing shell consisted of amino acid. In the paper we usedUV/visible spectroscopy and dynamic light scattering method to analyze the effect of experimental procedure on the properties of obtained NPs. |
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| DOI: | 10.15407/Surface.2016.08.118 |