Biswas, Kanishka ; Varghese, Neenu ; Rao, Chintamani N. R. (2008) Growth Kinetics of Gold Nanocrystals: A Combined Small-Angle X-Ray Scattering and Calorimetric Study Small, 4 (5). pp. 649-655. ISSN 16136810
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Official URL: http://doi.org/10.1002/smll.200700937
Related URL: http://dx.doi.org/10.1002/smll.200700937
Abstract
The growth of gold nanocrystals prepared by the reduction of tetrachloroauric acid by tetrakis(hydroxymethyl)phosphonium chloride, which allows slow reduction, is investigated by small-angle X-ray scattering and isothermal titration calorimetry in combination with transmission electron microscopy. The growth of the nanocrystals does not follow the diffusion-limited Ostwald ripening but instead follows a sigmoidal rate curve. The activation energy obtained from the temperature-dependent growth study is very small. The heat change associated with the growth is determined for the first time as approximately 10 kcal mol−1 per 1 nm increase in the nanocrystals' diameter.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley & Sons, Inc. |
| ID Code: | 128126 |
| Deposited On: | 03 Nov 2022 05:55 |
| Last Modified: | 03 Nov 2022 05:55 |
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