Issue 18, 2015

Gold nanocluster-enhanced peroxynitrous acid chemiluminescence for high selectivity sensing of nitrite

Abstract

Peroxynitrous acid (ONOOH) produced by online mixing of nitrite and acidified hydrogen peroxide could induce weak chemiluminescence (CL). A stronger chemiluminescence was observed in the presence of gold nanoclusters (Au NCs). This novel CL system was developed as a flow-injection method for the nitrite determination directly and conveniently. This method was achieved in acidic medium, which greatly improved its selectivity. The CL mechanism of the peroxynitrous acid–gold nanocluster system was investigated using CL spectroscopy, UV-visible spectroscopy and radical scavengers. The enhanced CL could be attributed to the catalysis of Au nanoclusters. The proposed method has been applied to determine nitrite in water samples with good accuracy and precision.

Graphical abstract: Gold nanocluster-enhanced peroxynitrous acid chemiluminescence for high selectivity sensing of nitrite

Article information

Article type
Paper
Submitted
28 Dec 2014
Accepted
20 Jan 2015
First published
20 Jan 2015

RSC Adv., 2015,5, 13495-13501

Author version available

Gold nanocluster-enhanced peroxynitrous acid chemiluminescence for high selectivity sensing of nitrite

Y. Sui, M. Deng, S. Xu and F. Chen, RSC Adv., 2015, 5, 13495 DOI: 10.1039/C4RA17164K

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