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Multishell bimetallic AuAg nanoparticles: synthesis, structure and optical properties
Abstract
Core–shell and multishell bimetallic AuAg nanoparticles have been synthesized by successive reduction of metal salts with ascorbic acid on pre-made seeds in the presence of a cationic surfactant, cetyltrimethylammonium bromide (CTAB). The coverage of the seeds is extremely uniform, although in some cases deviations from a spherical shape are observed with the formation of nanorods or nanoprisms. The evolution of the optical properties as further metal layers are deposited is very dramatic and can be modelled using Mie theory for multilayer spheres. However, preliminary results using high-resolution STEM-XEDS elemental mapping suggest that the actual distribution of the two metals within the multilayer spheres may involve (partial) alloying of the metals.
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Citations
Cited by
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
Self-citationColloidal heterostructured nanocrystals: Synthesis and growth mechanisms
Carbone, L., & Cozzoli, P. D. (2010) · Nano Today · doi:10.1016/j.nantod.2010.08.006 · Cited by 691
Three-Layer Core/Shell Structure in Au−Pd Bimetallic Nanoparticles
Ferrer, D., Torres-Castro, A., Gao, X., Sepúlveda-Guzmán, S., Ortiz-Méndez, U., & José-Yacamán, M. (2007) · Nano Letters · doi:10.1021/nl070694a · Cited by 304
Metadata
- Authors
- Rodríguez-González, B., Burrows, A., Watanabe, M., Kiely, C. J., & Liz Marzán, L. M.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2005
- Volume
- 15
- Issue
- 17
- Pages
- 1755
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2019399725
- Cited by
- 292
- References
- 0
- FWCI
- 5.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Rodríguez-González, B., Burrows, A., Watanabe, M., Kiely, C. J., & Liz Marzán, L. M. (2005). Multishell bimetallic AuAg nanoparticles: synthesis, structure and optical properties. Journal of Materials Chemistry. https://doi.org/10.1039/b500556f
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