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Solution-Phase Synthesis of Sub-10 nm Au−Ag Alloy Nanoparticles
Abstract
Gold−silver alloy nanoparticles were synthesized via reduction of varying mole fractions of HAuCl 4 and AgNO 3 by sodium borohydride in the presence of sodium citrate as a capping agent, in water. Solution concentrations were adjusted to avoid the precipitation of AgCl during the course of the reaction. The plasmon absorption band of Ag−Au nanoparticles shifts linearly to the red with increasing Au content. Due to the direct dependence of the metal salt ratio to the shift of the absorbance peak and the lack of an apparent core−shell structure in transmission electron microscope images, it is concluded that the nanoparticles are alloys, rather than core−shell composites.
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Citations
Cited by
Nanoalloys: From Theory to Applications of Alloy Clusters and Nanoparticles
Ferrando, R., Jellinek, J., & Johnston, R. L. (2008) · Chemical Reviews · doi:10.1021/cr040090g · Cited by 3,690
Tailoring Surface Plasmons through the Morphology and Assembly of Metal Nanoparticles
Liz-Marzán, L. M. (2006) · Langmuir · doi:10.1021/la0513353 · Cited by 1,645
Alloyed Semiconductor Quantum Dots: Tuning the Optical Properties without Changing the Particle Size
Bailey, R. E., & Nie, S. (2003) · Journal of the American Chemical Society · doi:10.1021/ja035000o · Cited by 936
Synthesis and Optical Properties of Hybrid and Alloy Plasmonic Nanoparticles
Cortie, M. B., & McDonagh, A. M. (2011) · Chemical Reviews · doi:10.1021/cr1002529 · Cited by 834
Microbial synthesis of gold nanoparticles: Current status and future prospects
Shedbalkar, U., Singh, R., Wadhwani, S., Gaidhani, S., & Chopade, B. A. (2014) · Advances in Colloid and Interface Science · doi:10.1016/j.cis.2013.12.011 · Cited by 330
Metadata
- Authors
- Mallin, M. P., & Murphy, C. J.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-10-02
- Volume
- 2
- Issue
- 11
- Pages
- 1235-1237
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2012257838
- Cited by
- 581
- References
- 0
- FWCI
- 9.81
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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