Chemical Papers

, Volume 74, Issue 2, pp 441–449 | Cite as

An electrochemical sensor for determination of nitrite based on Au nanoparticles decorated MoS2 nanosheets

  • Xin Li
  • Na Zou
  • Zhaoxia Wang
  • Yanli Sun
  • Hongying Li
  • Chunping Gao
  • Tao Wang
  • Xueliang WangEmail author
Original Paper


An electrochemical sensor for the determination of nitrite was successfully fabricated via electro-depositing Au nanoparticles on a glassy carbon electrode (GCE) modified with MoS2 nanosheets. The morphology and composite of the resulted electrode were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. The modified processes of the nanoAu-MoS2/GCE were monitored by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The amperometric current–time (it) showed that the developed electrode had excellent response for sodium nitrite under the optimum conditions, and the oxidative current of sodium nitrite was proportionally correlated with its concentration (10–2100 μM) with a limit of detection (LOD) of 0.09 μM (S/N = 3), which can be employed in the determination of nitrite in river and drinking water with the advantages of good reproducibility, anti-interference, long-term stability and satisfactory recovery rate.


Nitrite Electrochemical sensor Au nanoparticles MoS2 nanosheets Application 



This work was supported by Natural Science Foundation Committee of Shandong Province, China (nos. ZR2017MB062, BS2013HZ027 and ZR2015BL014) and the National Natural Science Foundation of China (no. 21105023).

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2019

Authors and Affiliations

  • Xin Li
    • 1
  • Na Zou
    • 1
  • Zhaoxia Wang
    • 1
  • Yanli Sun
    • 1
  • Hongying Li
    • 1
  • Chunping Gao
    • 1
  • Tao Wang
    • 1
  • Xueliang Wang
    • 1
    Email author
  1. 1.College of Chemistry and Chemical EngineeringHeze UniversityHezeChina

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