Gold nanoparticle/single-walled carbon nanotube film on the surface of glassy carbon electrode and its application

• Published in: Materials letters 2011-12, Vol.65 (23), p.3612-3614
• Main Authors: Song, Yuan-Zhi, Zhu, An-Feng, Zhong, Hui, Song, Yang, Wu, Fei-Yue, Yang, Wen-lan, Huang, Hui
• Format: Article
• Language: English
• Subjects: carbon; Carbon nanotubes; detection limit; electrochemistry; Electrodes; epinephrine; Glassy carbon; Gold; Hydrochlorides; Nanocomposites; Nanomaterials; Nanostructure; oxidation; Sensors; Single wall carbon nanotubes; Surfaces
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2011.06.031

A sensor based on gold nanoparticle/single-walled carbon nanotube film on the surface of glassy carbon electrode is prepared. Electrochemical behavior of adrenaline hydrochloride (AH) on the surface of gold nanoparticle/single-walled carbon nanotube modified glassy carbon electrode is investigated. A simple, sensitive, and inexpensive method for determination of AH is proposed. The oxidation peak currents is proportional to adrenaline hydrochloride concentrations in the range of 0.20 mg L − 1 to 1.80 mg L − 1 in 0.1 M phosphate buffer solution of pH 7.3, the detection limit for AH is 0.06 mg L − 1 , and the recoveries are in the range from 100.0 to 110.0% with RSD of 1.2–1.9% (n = 6). ► Electrochemical deposition of gold nanoparticles (GNs) on the surface of SWCNTs. ► Electrochemical behavior of adrenaline hydrochloride on the surface of GN/SWCNTs. ► A simple method for determination of adrenaline hydrochloride.