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Application of graphene-based materials for detection of nitrate and nitrite in water—a review

  • Daoliang Li
    ,
  • Tan Wang
    ,
  • Zhen Li
    ,
  • Xianbao Xu
    ,
  • Cong Wang
    ,
  • Yanqing Duan
Research Output: Contribution to journal Review article Peer-review

Open access

Sustainable Development Goals

  • SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well

Abstract

Nitrite and nitrate are widely found in various water environments but the potential toxicity of nitrite and nitrate poses a great threat to human health. Recently, many methods have been developed to detect nitrate and nitrite in water. One of them is to use graphene-based materials. Graphene is a two-dimensional carbon nano-material with sp2 hybrid orbital, which has a large surface area and excellent conductivity and electron transfer ability. It is widely used for modifying electrodes for electrochemical sensors. Graphene based electrochemical sensors have the advantages of being low cost, effective and efficient for nitrite and nitrate detection. This paper reviews the application of graphene-based nanomaterials for electrochemical detection of nitrate and nitrite in water. The properties and advantages of the electrodes were modified by graphene, graphene oxide and reduced graphene oxide nanocomposite in the development of nitrite sensors are discussed in detail. Based on the review, the paper summarizes the working conditions and performance of different sensors, including working potential, pH, detection range, detection limit, sensitivity, reproducibility, repeatability and long-term stability. Furthermore, the challenges and suggestions for future research on the application of graphene-based nanocomposite electrochemical sensors for nitrite detection are also highlighted.

Publication Information

Output type

Research Output: Contribution to journal Review article Peer-review

Original language

English

Journal (Volume, Issue Number)

Sensors (Volume 20, Issue 1)

Publication milestones

  • Accepted/In press - 16/12/2019
  • Published - 20/12/2019

Publication status

Published - 20/12/2019

ISSN

1424-8220

External Publication IDs

  • handle.net: 10547/623743
  • Scopus: 85076883338

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