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

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

Chem Commun (Camb). 2017 Sep 12;53(73):10160-10163. doi: 10.1039/c7cc05409b.

Authors

Hong Liao¹, Guangjuan Liu, Yun Liu, Rong Li, Wensheng Fu, Lianzhe Hu

Affiliation

¹ 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. [email protected].

PMID: 28849818
DOI: 10.1039/c7cc05409b

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.