Singla, M.L. and Negi, Anjali and Mahajan, Vikram and Singh, K.C. and Jain, D.V.S. (2007) Catalytic Behavior of Nickel Nanoparticles Stabilized by Lower Alkyl Ammonium Bromide in Aqueous Medium. Applied Catalysis A:General , 323. pp. 51-57. ISSN 0926-860X
Full text not available from this repository.Abstract
Heterogeneous synthesis of monodisperse pure nickel nanoparticles in aqueous medium has been carried out using cetyltrimethylammonium bromide and a lower alkylammonium bromide mixture of tetraethylammonium bromide and tetrabutylammonium bromide. The presence of cetyltrimethylammonium bromide alone results in the formation of a mixture of nickel hydroxide and nickel nanoparticles. The particles have been characterized using TEM, EDS, XRD, TGA-DSC and FTIR. The analysis showed that particles are spherical in shape, monodisperse, face-centered-cubic with average size about 15 nm and are stable in air up to 325 °C. The nanoparticles have been used as a solid phase catalyst for the reduction ofp-nitrophenol in the presence of hydrazine hydrate as reducing agent at different temperatures under varying conditions. The reduction process has been monitored by UV-vis analysis. The present study showed that nanoparticles are not poisoned after their repeated use in reduction of p-nitrophenol to p-aminophenol. TEM analysis also confirms that nanoparticles are stable in the dispersed medium for longer times.
Item Type: | Article |
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Uncontrolled Keywords: | Nickel nanoparticles; Lower alkylammonium bromide; Aqueous medium; p-Nitrophenol; Catalysis; p-Aminophenol |
Subjects: | CSIO > Chemistry |
Depositing User: | Ms. Narinder Kaur |
Date Deposited: | 09 Mar 2012 15:55 |
Last Modified: | 09 Mar 2012 15:55 |
URI: | http://csioir.csio.res.in/id/eprint/100 |
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