The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
New Insights on the Nanoparticle Growth Mechanism in the Citrate Reduction of Gold(III) Salt: Formation of the Au Nanowire Intermediate and Its Nonlinear Optical Properties
Abstract
The synthesis of gold nanospheres via the reduction of AuCl 4 - salt by sodium citrate has been revisited, with focus on the mechanism of particle growth. In stark contrast to the widely accepted LaMer nucleation-growth model, the initially formed nanoclusters of about 5 nm diameter self-assemble to form an extensive network of nanowires. The diameter of the nanowires progressively increases in size, and at the same time the connected network is fragmented into small segments before the final spherical particles are formed. We put forward a modified nanocrystal growth mechanism, which is able to explain a number of other experimental observations. By arresting the reduction process by rapid cooling, the 5 nm diameter nanowires could be isolated and were found to be very stable. The nonlinear optical properties of the Au nanowires were investigated and discussed. Highly connected, small diameter nanowires of highly conductive metals may be useful for future electronic applications, e.g., conductive polymer−metal composites with low metal loading.
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Metadata
- Authors
- Pong, B.-K., Elim, H. I., Chong, J.-X., Ji, W., Trout, B. L., & Lee, J.-Y.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-04-12
- Volume
- 111
- Issue
- 17
- Pages
- 6281-6287
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W1969493186
- Cited by
- 310
- References
- 19
- FWCI
- 6.41
- 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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