The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.
Photovoltage Mechanism for Room Light Conversion of Citrate Stabilized Silver Nanocrystal Seeds to Large Nanoprisms
Abstract
We investigate the photoconversion of aqueous 8 nm Ag nanocrystal seeds into 70 nm single crystal plate nanoprisms. The process relies on the excitation of Ag surface plasmons. The process requires dioxygen, and the transformation rate is first-order in seed concentration. Although citrate is necessary for the conversion, and is consumed, the transformation rate is independent of citrate concentration. We propose a mechanism that accounts for these features by coupling the oxidative etching of the seed and the subsequent photoreduction of aqueous Ag(+). The reduced Ag deposits onto a Ag prism of specific size that has a cathodic photovoltage resulting from plasmon "hot hole" citrate photo-oxidation. This photovoltage mechanism also explains recent experimental results involving single and dual wavelength irradiation and the core/shell synthesis of Ag layers on Au seeds.
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Metadata
- Authors
- Wu, X., Redmond, P. L., Liu, H., Chen, Y., Steigerwald, M., & Brus, L.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-06-26
- Volume
- 130
- Issue
- 29
- Pages
- 9500-9506
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2092539730
- Cited by
- 262
- References
- 35
- FWCI
- 5.83
- Type
- journal article
- Language
- en
- Open access
- closed
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