\(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs nanocomposite decorated glassy carbon electrode for the determination of nitrite

  • Xiu Ru Lin
  • Yi Fan Zheng
  • Xu Chun Song


A novel ferric oxide/multi-walled carbon nanotubes (\(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs)-modified glassy carbon electrode (GCE) was prepared by drop casting \(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs onto the surface of GCE. Scanning electron microscopy (SEM) image shows that the \(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs has a nanostructure. Cyclic voltammetry (CV) results show that the \(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs-modified GCE presents excellent electrochemical activity in the presence of 1 mM nitrite in a 0.1 M phosphate-buffered saline (PBS) to compare the \(\hbox {Fe}_{2}\hbox {O}_{3}\) and MWCNTs-modified GCE. Differential pulse voltammetry (DPV) results also show that the \(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs has excellent electrocatalytic performance to nitrite in a pH 7.0 PBS. The amperometric response result shows that the \(\hbox {Fe}_{2}\hbox {O}_{3}\)/MWCNTs-modified GCE can be used to detect nitrite concentration in a wide linear range of \(10\textendash 1000\, \upmu \hbox {M}\) with a detection limit of \(0.1\, \upmu \hbox {M}\).


\(\hbox {Fe}_{2}\hbox {O}_{3}\) MWCNTs electrochemical determination nitrite 


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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Department of ChemistryFujian Normal UniversityFuzhouPeople’s Republic of China
  2. 2.Fujian Provincial Key Laboratory of Featured Materials in Biochemical IndustryNingde Normal UniversityNingdePeople’s Republic of China
  3. 3.Research Center of Analysis and MeasurementZhejiang University of TechnologyHangzhouPeople’s Republic of China

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