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Synthesis of Organic Monolayer-Stabilized Copper Nanocrystals in Supercritical Water
Abstract
When water is heated and pressurized above the critical point, it becomes a suitable solvent to employ organic capping ligands to control and stabilize the synthesis of nanocrystals. Without alkanethiol ligands, Cu(NO(3))(2) hydrolyzes to form polydisperse copper(II) oxide particles with diameters from 10 to 35 nm. However, in the presence of 1-hexanethiol, X-ray photoelectron spectroscopy, selected area electron diffraction, and transmission electron microscopy reveal the formation of copper nanocrystals approximately 7 nm in diameter. The use of a different precursor, Cu(CH(3)COO)(2), leads to particles with significantly different morphologies. A mechanism is proposed for sterically stabilized nanocrystal growth in supercritical water that describes competing pathways of hydrolysis to large oxidized copper particles versus ligand exchange and arrested growth by thiols to produce small monodisperse Cu nanoparticles.
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Citations
Cited by
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Single-Phase and Gram-Scale Routes toward Nearly Monodisperse Au and Other Noble Metal Nanocrystals
Jana, N. R., & Peng, X. (2003) · Journal of the American Chemical Society · doi:10.1021/ja038219b · Cited by 555
Ultrathin Nanosheets of Li2MSiO4 (M = Fe, Mn) as High-Capacity Li-Ion Battery Electrode
Rangappa, D., Murukanahally, K. D., Tomai, T., Unemoto, A., & Honma, I. (2012) · Nano Letters · doi:10.1021/nl202681b · Cited by 337
Synthesis of Metal Oxide Nanostructures by Direct Sol–Gel Chemistry in Supercritical Fluids
Sui, R., & Charpentier, P. (2012) · Chemical Reviews · doi:10.1021/cr2000465 · Cited by 313
Influence of ligand structure on the stability and oxidation of copper nanoparticles
Kanninen, P., Johans, C., Merta, J., & Kontturi, K. (2008) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2007.09.069 · Cited by 289
Metadata
- Authors
- Ziegler, K. J., Doty, R. C., Johnston, K. P., & Korgel, B. A.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-07-20
- Volume
- 123
- Issue
- 32
- Pages
- 7797-7803
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2036046490
- Cited by
- 212
- References
- 0
- FWCI
- 8.32
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ziegler, K. J., Doty, R. C., Johnston, K. P., & Korgel, B. A. (2001). Synthesis of Organic Monolayer-Stabilized Copper Nanocrystals in Supercritical Water. Journal of the American Chemical Society. https://doi.org/10.1021/ja010824w
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