A new strategy for enhancing electrochemical sensing from MWCNTs modified electrode with Langmuir-Blodgett film and used indetermination of methylparaben

作者：Wang, Lu; Li, Yinfeng; Li, Gaiping; Ye, Baoxian^*

来源：Sensors and Actuators B: Chemical , 2015, 211: 332-338.

DOI：10.1016/j.snb.2015.01.056

• Methylparaben
• Multi-walled carbon nanotubes
• Octadecylamine
• Langmuir-Blodgett film

A new type of voltammetric sensor, Langmuir-Blodgett (LB) film of multi-walled carbon nanotubes (MWCNTs) perpendicularly modified glassy carbon electrode (GCE), was prepared and applied in determination of methylparaben. Based on the excellent electrochemical property of vertical MWCNTs on the GCE (MWCNTs-LB/GCE), a sensitive voltammetric method for determination of methylparaben was erected with liner range from 1 x 10(-6) mol L-1 to 8 x 10(-5) mol L-1 and detection limit of 4 x 10(-7) mol L-1. The electrochemical characters of MWCNTs-LB/GCE were investigated in detail and the reaction mechanism of methylparaben was discussed. Meanwhile, cosmetic samples were analyzed using proposed method and the results obtained were well satisfactory.

• 出版日期2015-5
• 单位河南城建学院; 洛阳理工学院; 郑州大学