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Issue 28, 2014
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Adsorption dominant catalytic activity of a carbon dots stabilized gold nanoparticles system

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Abstract

Carbon dots (CDs) with abundant functional groups (–OH, –COOH, C[double bond, length as m-dash]O) on their surface were specially designed to enhance the adsorption capacity and the catalytic activity of gold nanoparticles (AuNPs). The CDs stabilized gold nanoparticles (AuNPs-CDs) were greenly synthesized by a one-step reduction of HAuCl4 with CDs which were used as both the reductant and the stabilizer under visible light irradiation. The resulting AuNPs-CDs exhibit a high catalytic activity towards the reduction of 4-nitrophenol, with a good linear correlation of ln(Ci/C0) versus time and a kinetic rate constant about 0.68 min−1. Further detailed adsorption kinetics data indicated that the present adsorption system follows a predominantly second-order rate model, and the CDs capped on the surface of the AuNPs also enhanced the adsorption capacity and the catalytic activity of the AuNPs.

Graphical abstract: Adsorption dominant catalytic activity of a carbon dots stabilized gold nanoparticles system

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Supplementary files

Article information


Submitted
01 Mar 2014
Accepted
24 Apr 2014
First published
24 Apr 2014

Dalton Trans., 2014,43, 10920-10929
Article type
Paper

Adsorption dominant catalytic activity of a carbon dots stabilized gold nanoparticles system

R. Liu, J. Liu, W. Kong, H. Huang, X. Han, X. Zhang, Y. Liu and Z. Kang, Dalton Trans., 2014, 43, 10920
DOI: 10.1039/C4DT00630E

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