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Disposable carbon electrodes modified by a bismuth selenide/carboxylic multiwalled carbon nanotubes composite for the effective electrocatalytic analysis of nitrite

Sensors and Actuators B: Chemical, ISSN: 0925-4005, Vol: 332, Page: 129454
2021
  • 13
    Citations
  • 0
    Usage
  • 18
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    13
    • Citation Indexes
      13
  • Captures
    18

Article Description

A disposable electrochemical sensor is designed based on a bismuth selenide/carboxylic multiwalled carbon nanotube (Bi 2 Se 3 @MWNTs-COOH) nanocomposite for detecting nitrite. The Bi 2 Se 3 @MWNTs-COOH nanocomposite is synthesized via a one-step hydrothermal method with an oxygen connection betweenBi 2 Se 3 @MWNTs-COOH nanosheets. Compared to pure Bi 2 Se 3, the Bi 2 Se 3 @MWNTs-COOH nanocomposite possesses faster electron transfer rate and a higher electrochemically active surface area, resulting in enhanced electrochemical performance. The disposable electrochemical sensor exhibits excellent performance for nitrite detection, with a wide concentration range of 0.01 μM - 7.0 mM and a low detection limit of 0.002 μM in the low concentration range of 0.01 μM–500 μM. Hence, the prepared electrochemical sensor can be considered an effective analytical tool for monitoring nitrite. This work not only presents new insights into nitrite detection but also inspires the exploration of rapid and inexpensive detection methods with related nanocomposites and disposable systems.

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