• Fe$_2$O$_3$/MWCNTs nanocomposite decorated glassy carbon electrode for the determination of nitrite

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    • Keywords


      Fe$_2$O$_3$; MWCNTs; electrochemical determination; nitrite.

    • Abstract


      A novel ferric oxide/multi-walled carbon nanotubes (Fe$_2$O$_3$/MWCNTs)-modified glassy carbon electrode (GCE)was prepared by drop casting Fe$_2$O$_3$/MWCNTs onto the surface of GCE. Scanning electron microscopy (SEM) image shows that the Fe2O3/MWCNTs has a nanostructure. Cyclic voltammetry (CV) results show that the Fe$_2$O$_3$/MWCNTsmodifiedGCE presents excellent electrochemical activity in the presence of 1 mM nitrite in a 0.1 M phosphate-buffered saline (PBS) to compare the Fe$_2$O$_3$ and MWCNTs-modified GCE. Differential pulse voltammetry (DPV) results also showthat the Fe$_2$O$_3$/MWCNTs has excellent electrocatalytic performance to nitrite in a pH 7.0 PBS. The amperometric response result shows that the Fe$_2$O$_3$/MWCNTs-modified GCE can be used to detect nitrite concentration in a wide linear range of 10–1000 $\mu$M with a detection limit of 0.1 $\mu$M.

    • Author Affiliations



      1. Department of Chemistry, Fujian Normal University, Fuzhou 350007, People’s Republic of China
      2. Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, People’s Republic of China
      3. Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
    • Dates

  • Bulletin of Materials Science | News

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