Microchimica Acta

, 186:624 | Cite as

Amperometric determination of nitrite by using a nanocomposite prepared from gold nanoparticles, reduced graphene oxide and multi-walled carbon nanotubes

  • Hao YuEmail author
  • Rui Li
  • Kai-li Song
Original Paper


A nanocomposite consisting of gold nanoparticles (AuNP), reduced graphene oxide (rGO) and multi-walled carbon nanotubes (MWCNTs) was synthesized using a co-reduction strategy in ethylene glycol using sodium citrate as the reducing agent. The nanocomposite was successfully characterized using X-ray powder diffraction, scanning electron microscopy and electrochemical methods. The material was deposited on a glassy carbon electrode and then was found to have high electrocatalytic capability for the electrode process of nitrite. This is attributed to the synergic actions of rGO, MWCNTs and AuNPs. Based on this, an amperometric nitrite sensing scheme was worked out that had attractive features: (a) a wide linear range that extends from 50 nM to 2.2 mM, (b) a working potential of 0.80 V (vs.SCE) at pH 5.0, (c) a 14 nM detection limit (at an SNR of 3), and (d) an electrochemical sensitivity of 1201 μA·mM−1·cm−2. The sensor was successfully applied to the determination of nitrite in the local river water.

Graphical abstract

Schematic presentation of the fabrication of the AuNPs-rGO-MWCNTs composite modified electrode and its application for the nitrite electrochemical sensing.


Metal nanoparticles Carbon materials Nanocomposite Chemical co-reduction Ethylene glycol Electrochemical sensor Electrocatalysis Environmental detection Water quality analysis Nitrite 



We would like to thank the support by the Special Research Fund of Education Department of Shaanxi Province, Grant Number: 17JS139, and the Natural Science Fund of Shaanxi Province in China, Grant Number: 2018JM2053.

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2019_3735_MOESM1_ESM.docx (3.9 mb)
ESM 1 (DOCX 3.93 mb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Chemistry and Chemical EngineeringYan’an UniversityYan’anChina
  2. 2.Shaanxi Key Laboratory of Chemical Reaction EngineeringYan’an UniversityYan’anChina

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