Kumar, Suresh and Kaur, Inderpreet and Dharamvir, Keya and Bharadwaj, L.M. (2012) Controlling the density and site of attachment of goldnanoparticles onto the surface of carbonnanotubes. Journal of Colloid and Interface Science, 369 (1). pp. 23-27. ISSN 0021-9797
Full text not available from this repository.Abstract
A facile method for controlling the density and site of attachment of goldnanoparticles onto the surface of carbonnanotubes is demonstrated. Nitric acid based oxidation was carried out to create carboxylic groups exclusively at the ends of carbonnanotubes, whereas oxidation using a mixture of nitric and sulfuric acid with varied reaction time was carried out to control the population of carboxylic groups on the side walls of nanotubes. In turn, 4-aminothiophenol modified goldnanoparticles were covalently interfaced to these carboxylated multi-walled carbonnanotubes in the presence of a zero length cross-linker, 1-ethylene-3-(3-dimethylaminopropyl) carbodiimide. Raman spectroscopic results showed increase in height of disorder band with each of these successive steps, indicating the increase in degree of functionalization of the carbonnanotubes. Fourier transformed infrared spectroscopic analysis affirmed the functionalization of nanostructures and the formation of nanohybrid. Transmission electron and field emission scanning electron microscopic analysis ascertained the attachment of goldnanoparticles to the ends and side walls of the multi-walled carbonnanotubes. The new hybrid nanostructures may find applications in electronic, optoelectronic, and sensing devices.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Carbonnanotubes;Goldnanoparticles;Nanohybrid |
| Subjects: | CSIO > Nano Science and Nano Technology |
| Depositing User: | Ms. J Shrivastav |
| Date Deposited: | 22 Apr 2012 23:02 |
| Last Modified: | 22 Apr 2012 23:02 |
| URI: | http://csioir.csio.res.in/id/eprint/253 |
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