Aggregation-induced accelerating peroxidase-like activity of gold nanoclusters and their applications for colorimetric Pb2+ detection

Hong Liao; Guangjuan Liu; Yun Liu; Rong Li; Wensheng Fu; Lianzhe Hu

doi:10.1039/C7CC05409B

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Aggregation-induced accelerating peroxidase-like activity of gold nanoclusters and their applications for colorimetric Pb²⁺ detection†

Hong Liao,^a Guangjuan Liu,^a Yun Liu,^a Rong Li,^a Wensheng Fu^a and Lianzhe Hu

*^a

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* Corresponding authors

^a Chongqing Key Laboratory of Green Synthesis and Applications, and Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, China
E-mail: lianzhehu@cqnu.edu.cn

Abstract

In this study, we found that Pb²⁺-induced aggregation can greatly accelerate the peroxidase-like activity of Au nanoclusters (Au-NCs). The catalytic activities of Au-NCs toward peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation in the presence of H₂O₂ are nearly 10-fold increased after the Pb²⁺-induced aggregation. Based on this finding, a simple and reliable colorimetric method for Pb²⁺ detection was developed.

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Article information

DOI: https://doi.org/10.1039/C7CC05409B
Article type: Communication
Submitted: 13 Jul 2017
Accepted: 23 Aug 2017
First published: 23 Aug 2017

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Chem. Commun., 2017,53, 10160-10163

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Aggregation-induced accelerating peroxidase-like activity of gold nanoclusters and their applications for colorimetric Pb²⁺ detection

H. Liao, G. Liu, Y. Liu, R. Li, W. Fu and L. Hu, Chem. Commun., 2017, 53, 10160 DOI: 10.1039/C7CC05409B

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