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

Bulletin of Materials Science

XIU RU LIN^1,2¹  YI FAN ZHENG^3²  XU CHUN SONG^1³ 

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

关键词: Fe$_2$O$_3$;    MWCNTs;    electrochemical determination;    nitrite.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

CC BY