Bimetallic gold/silver alloy nanoparticles prepared in the presence of tryptophan
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: |
Інститут хімії поверхні ім. О.О. Чуйка НАН України
2016
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| Series: | Поверхность |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/148518 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Bimetallic gold/silver alloy nanoparticles prepared in the presence of tryptophan / N. Vityuk, Iu. Mukha, G. Grodzyuk, A. Eremenko // Поверхность. — 2016. — Вип. 8 (23). — С. 118-122. — Бібліогр.: 11 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| 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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