Glassy carbon electrode coated with polyaniline-functionalized carbon nanotubes for detection of trace lead in acetate solution

作者：Wang Zhaomeng; Liu Erjia^*; Gu Donghao; Wang Yongsheng

来源：Thin Solid Films, 2011, 519(15): 5280-5284.

DOI：10.1016/j.tsf.2011.01.175

• MWCNT-CO-PANI nanocomposite coating
• Square wave anodic stripping voltammetry
• Surface morphology
• Trace Pb(II)

The performance of glassy carbon electrodes (GCEs) coated with polyaniline-multiwalled carbon nanotube (MWCNT-CO-PANI) nanocomposite coatings was investigated in detection of Pb2+ ions in a 0.1 M acetate buffer solution using square wave anodic stripping voltammetry (SWASV). It was found that the MWCNT-CO-PANI coated electrodes had a better performance than the bare GCEs. Different solvents were used to get a better dispersion of MWCNTs in the PANI matrix for higher stripping signals. The surface morphology and structure of the coated electrodes were examined using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and micro Raman spectroscopy, showing that the conductive PANI matrix worked as both a conductor to electrically connect the individual MWCNTs, and a binder to mechanically join the MWCNTs.

• 出版日期2011-5-31
• 单位南阳理工学院