Srivastava, Chandan and Sushma, KVL (2014) Effect of Reflux Time on Nanoparticle Shape. In: MICROSCOPY AND MICROANALYSIS, 20 (3). pp. 847-851.
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In the present work, Pt nanoparticles were produced from a reaction mixture containing a trace amount of cobalt carbonyl salt acting as a shape inducer. Nanoparticle shape evolution during reaction mixture reflux was monitored by characterizing particles extracted from the reaction mixture at different times. It was observed that 5 min of reflux produced spherical nanoparticles, 30 min of reflux produced cube shaped nanoparticles, and 60 min of reflux produced truncated octahedron morphology nanoparticles. It is illustrated that during nanoparticle synthesis the reflux process can provide energy needed for shape transformation from a metastable cube morphology to a truncated octahedron morphology which is thermodynamically the most stable geometry for fcc crystals. An optimization of the reaction reflux is thus needed for isolating metastable shapes.
| Item Type: | Journal Article |
|---|---|
| Publication: | MICROSCOPY AND MICROANALYSIS |
| Additional Information: | Copyright for this article belongs to the CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 26 Aug 2014 06:44 |
| Last Modified: | 26 Aug 2014 06:44 |
| URI: | http://eprints.iisc.ac.in/id/eprint/49677 |
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