Application of multiwalled carbon nanotubes/ionic liquid modified electrode for amperometric determination of sulfadiazine | Zendy

Hong Xiaoping | Zendy; Zhu Yan | Zendy; Ma Jingying | Zendy

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Application of multiwalled carbon nanotubes/ionic liquid modified electrode for amperometric determination of sulfadiazine

Author(s) -

Hong Xiaoping,

Zhu Yan,

Ma Jingying

Publication year - 2012

Publication title -

drug testing and analysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.065

H-Index - 54

eISSN - 1942-7611

pISSN - 1942-7603

DOI - 10.1002/dta.329

Subject(s) - ionic liquid , amperometry , electrochemistry , carbon nanotube , electrode , hexafluorophosphate , chemical engineering , materials science , detection limit , sulfadiazine , glassy carbon , pyridinium , inorganic chemistry , chemistry , chromatography , nanotechnology , cyclic voltammetry , organic chemistry , catalysis , biochemistry , antibiotics , engineering

A highly sensitive amperometric sulfadiazine sensor based on coating multiwalled carbon nanotubes (MWCNTs) and N‐octyl‐pyridinium‐hexafluorophosphate (OPPF 6 ) ionic liquid composite on a glassy carbon (GC) electrode is described. The MWCNTs/OPPF 6 composite contributed new properties to electrochemical sensors by combining the advantages of both ionic liquids and MWCNTs. Compared with bare GC electrode, the electrocatalytic activity of MWCNTs/OPPF 6 generated a greatly improved electrochemical detection of sulfadiazine including low oxidation potential, high current responses, and good anti‐fouling performance. The oxidation peak currents of sulfadiazine obtained on the MWCNTs/OPPF 6 coated GC electrode were proportional to the concentration of sulfadiazine within the range of 3.3‐35.4 μM with a detection limit of 0.21 μM. Copyright © 2011 John Wiley & Sons, Ltd.

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