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Anal Chim Acta. 2018 Dec 28;1043:28-34. doi: 10.1016/j.aca.2018.08.045. Epub 2018 Aug 27.

Construction of a highly sensitive non-enzymatic nitrite sensor using electrochemically reduced holey graphene.

Author information

1
School of Material Engineering, Shanghai University of Engineering Science, Shanghai, 201620, PR China.
2
School of Material Engineering, Shanghai University of Engineering Science, Shanghai, 201620, PR China. Electronic address: yanzhang@sues.edu.cn.

Abstract

An electrochemical nitrite sensor based on electrochemically reduced holey graphene (ERHG) was fabricated in this study. An abundant of nanopores were observed on the basal plane of the ERHG, and, with the aid of in-plane pores, many more exposed edge plane and a high density of defects were found. Both these phenomena can significantly improve the electron transfer and mass transport of electrodes. The ERHG-modified electrode showed superior electrocatalytic activity toward nitrites with a wide linear range, high sensitivity, and a low detection limit. Furthermore, the ERHG nitrite sensor showed excellent anti-interference ability and reproducibility, long-term stability, and fulfilled requirements for application to real samples.

KEYWORDS:

Edge plane; Electrochemically reduced holey graphene; Electron transfer; Mass transport; Nitrite sensor

PMID:
30392666
DOI:
10.1016/j.aca.2018.08.045

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