Kalidindi, Suresh Babu ; Jagirdar, Balaji R. (2008) Synthesis of Cu@ZnO core−shell nanocomposite through digestive ripening of Cu and Zn nanoparticles Journal of Physical Chemistry C, 112 (11). pp. 4042-4048. ISSN 1932-7447
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp7100896
Related URL: http://dx.doi.org/10.1021/jp7100896
Abstract
The synthesis of colloids of copper and zinc nanoparticles by solvated metal atom dispersion (SMAD) is described. The as-prepared colloids with a large size distribution of the particles are transformed into colloidal nanoparticles of a narrow size distribution by the digestive ripening process which involves refluxing the colloid at or near the boiling point of the solvent in the presence of a passivating ligand. The copper nanoparticles of 2.1 ± 0.3 nm and zinc nanoparticles of 3.9 ± 0.3 nm diameters have thus been obtained. Digestive ripening of the as-prepared copper and zinc colloids together in the presence of a passivating agent gave Cu@ZnO core−shell nanoparticles, with an average diameter of 3.0 ± 0.7 nm. Particles synthesized in this manner were characterized by UV−visible spectroscopy, high-resolution electron microscopy, energy-filtered electron microscopy, and powder X-ray diffraction methods which confirm the core−shell structure.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 102248 |
Deposited On: | 12 Feb 2018 12:18 |
Last Modified: | 12 Feb 2018 12:18 |
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