Singh, V. N and Mehta, B. R. (2005) Nanoparticle size-dependent lowering of temperature for phase transition from In(OH)3 to in2O3. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 5 (3). 431-435(5). ISSN 1533-4880
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Abstract
Phase transformation of In(OH)3 to In2O3 has been studied as a function of nanoparticle size without any alteration of nanoparticle size during transformation. Chemically capped In(OH)3 nanoparticles having sizes of 15, 11, and 8 nm transform to In2O3 at temperatures of 285, 272, and 255°C, respectively. This first-time unambiguous observation of size-dependent lowering of transformation temperature represents a thermodynamic characteristic of the nanoparticle system. The results have been explained in terms of a lower cohesive energy of surface atoms and an increase in surface-to-volume ratio with a decrease in nanoparticle size.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Nanophysics Physical Science > Nano objects Material Science > Nanochemistry Material Science > Nanostructured materials |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics Faculty of Engineering, Science and Mathematics > School of Chemistry |
| ID Code: | 5064 |
| Deposited By: | JNCASR |
| Deposited On: | 27 May 2009 10:20 |
| Last Modified: | 27 May 2009 10:20 |
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