A new graphene nanocomposite modified electrode as efficient voltammetric sensor for determination of eriocitrin

作者：Wang, Lu; Wang, Qinqin; Sheng, Kai; Li, Gaiping; Ye, Baoxian^*

来源：Journal of Electroanalytical Chemistry, 2017, 785: 96-102.

DOI：10.1016/j.jelechem.2016.11.061

• Cerium oxide nanopartides
• Graphene
• Poly(diallyldimethylammonium chloride)
• Electrochemical sensor
• Eriocitrin

A new grapherie nanocomposite, CeO2-poly(diallyldimethylammonium chloride)-graphene (CeO2-PDDA-GR), was prepared by an easy and low-cost hydrothermal method. The images of transmission electron microscopy (TEM) showed that well-shaped CeO2 nanoparticles distributed more uniformly on the GR sheets. Based on the CeO2-PDDA-GR composites modified glassy carbon electrode, the electrochemical properties of eriocitrin were investigated in detail and a sensitive determination method was established synchronously. Differential pulse voltammetry (DPV) measurement revealed that the oxidation peak current increased linearly with eriocitrin concentrations in range of 1.0 x 10(-8) mol x 10(-8) mol L-1 with detection limit of 7.0 x 10(-10) mol L-1 (S/N = 3). Moreover, the proposed method was used in determination of eriocitrin in lemon sample with accurate results.

• 出版日期2017-1-15
• 单位洛阳理工学院; 郑州大学