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Issue 8, 2013
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Measurement of the catalytic activity of gold nanoparticles synthesized by a microwave-assisted heating method through time-dependent UV spectra

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Abstract

Spherical gold nanoparticles (GNPs), with an average diameter of 13 nm, were synthesized and their catalytic activity was measured by a spectroscopic method. The GNPs were synthesized by a microwave-assisted heating method under reflux, using trisodium citrate as the reducing agent. UV spectra and transmission electron microscopic (TEM) analysis were used to characterize the GNPs. The as-prepared GNP solutions were then successfully used as the catalyst in the borohydride reduction of nitrophenols. The reaction could be monitored by the time-dependent UV spectra. The reduction of nitrophenols followed a pseudo-first-order kinetic model and the apparent rate of different isomeric nitrophenols followed the order: m-nitrophenol > p-nitrophenol > o-nitrophenol.

Graphical abstract: Measurement of the catalytic activity of gold nanoparticles synthesized by a microwave-assisted heating method through time-dependent UV spectra

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Article information


Submitted
17 Oct 2012
Accepted
23 Feb 2013
First published
25 Feb 2013

Anal. Methods, 2013,5, 1991-1995
Article type
Paper

Measurement of the catalytic activity of gold nanoparticles synthesized by a microwave-assisted heating method through time-dependent UV spectra

J. Du and Z. Xia, Anal. Methods, 2013, 5, 1991
DOI: 10.1039/C3AY26222G

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