Leelavathi, Annamalai ; Rao, Thumu Udaya Bhaskara ; Pradeep, Thalappil (2011) Ag7 and Ag8 quantum clusters supported on alumina: new catalysts for organic reactions International Journal of Nanoscience, 10 (4-5). pp. 839-843. ISSN 0219-581X
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Official URL: http://www.worldscinet.com/ijn/10/1004n05/S0219581...
Related URL: http://dx.doi.org/10.1142/S0219581X1100927
Abstract
Silver quantum clusters (QCs) stabilized by mercaptosuccinic acid (MSA) have been synthesized at room temperature from Ag nanoparticles through an interfacial etching process. The as-synthesized red emitting QCs were coated on alumina and the supported clusters have been characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX) and fluorescence spectroscopy. Catalytic activity of Ag QCs supported on alumina have been exploited for the reduction of 4-nitrophenol in presence of sodium borohydride. The reaction followed pseudo-first order kinetics. The catalyst separated from the product remains active and can be recycled several times. Other nitroaromatic compounds have also been tested. Synthesis of the solid phase catalyst, applications and detailed kinetic studies of the reduction of 4-nitrophenol are reported.
Item Type: | Article |
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Source: | Copyright of this article belongs to World Scientific Publishing Company. |
Keywords: | Quantum Clusters; Nanoparticles; Nanocatalysis; Enhanced Catalytic Activity; Fuorescence |
ID Code: | 82399 |
Deposited On: | 10 Feb 2012 12:54 |
Last Modified: | 10 Feb 2012 12:54 |
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