Multilayer films of carbon nanotubes and redox polymer on screen-printed carbon electrodes for electrocatalysis of ascorbic acid

Yufang Sha; Lei Qian; Ying Ma; Haixin Bai; Xiurong Yang

doi:10.1016/j.talanta.2006.01.007

Multilayer films of carbon nanotubes and redox polymer on screen-printed carbon electrodes for electrocatalysis of ascorbic acid

Talanta. 2006 Oct 15;70(3):556-60. doi: 10.1016/j.talanta.2006.01.007. Epub 2006 Mar 29.

Authors

Yufang Sha¹, Lei Qian, Ying Ma, Haixin Bai, Xiurong Yang

Affiliation

¹ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Remin Street 5625, Changchun Jilin 130022, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China.

PMID: 18970807
DOI: 10.1016/j.talanta.2006.01.007

Abstract

Multilayer films containing multiwall carbon nanotubes and redox polymer were successfully fabricated on a screen-printed carbon electrode using layer-by-layer (LBL) assembled method. UV-vis spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy and electrochemical method were used to characterize the assembled multilayer films. The multilayer films modified electrodes exhibited good electrocatalytic activity towards the oxidation of ascorbic acid (AA). Compared with the bare electrode, the oxidation peak potential negatively shifted about 350mV (versus Ag/AgCl). Furthermore, the modified screen-printed carbon electrodes (SPCEs) could be used for the determination of ascorbic acid in real samples.