Fe2O3/MWCNTs nanocomposite decorated glassy carbon electrode for the determination of nitrite

作者：Lin, Xiu Ru; Zheng, Yi Fan; Song, Xu Chun^*

来源：Bulletin of Materials Science, 2018, 41(2): 35.

DOI：10.1007/s12034-018-1553-y

• Fe2O3
• MWCNTs
• electrochemical determination
• nitrite

A novel ferric oxide/multi-walled carbon nanotubes (Fe2O3/MWCNTs)-modified glassy carbon electrode (GCE) was prepared by drop casting Fe2O3/MWCNTs onto the surface ofGCE. Scanning electron microscopy (SEM) image shows that the Fe2O3/MWCNTs has a nanostructure. Cyclic voltammetry (CV) results show that the Fe2O3/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 Fe2O3 and MWCNTs-modified GCE. Differential pulse voltammetry (DPV) results also show that the Fe2O3/MWCNTs has excellent electrocatalytic performance to nitrite in a pH 7.0 PBS. The amperometric response result shows that the Fe2O3/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.

• 出版日期2018-4
• 单位宁德师范学院; 浙江工业大学; 福建师范大学