Citation: You Wenyu, Yang Tiejin. A Glassy Carbon Electrode Modified with Graphene and Silver Nanoparticles for Determination of Artemisinin[J]. Chemistry, ;2016, 79(11): 1035-1040. shu

A Glassy Carbon Electrode Modified with Graphene and Silver Nanoparticles for Determination of Artemisinin

You Wenyu ,
Yang Tiejin ^,

1.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006

Corresponding author: Yang Tiejin,
Received Date: 11 March 2016
Available Online: 30 July 2016

In this work, a novel artemisinin sensor was developed. Graphite oxide was coated and reduced to graphene(Gr) on a glassy carbon electrode(GCE) by electrochemical method. Then, Ag nanoparticles(AgNPs) were deposited on the above electrode to fabricate AgNPs/graphene modified electrode(AgNPs/Gr/GCE), which was denoted as the electrochemical sensor of artemisinin. The electrochemical behaviour of the modified electrode was studied by cyclic voltammetry, differential pulse voltammetry, electrochemical impedance spectroscopy, and so on. The modified electrode displays excellent performance in the electrochemical reduction of artemisinin for showing more positive reduction peak potential and high reduction peak currents. The effects of the experimental variables on the determination of arteminin such as solution pH and applied potential were investigated for optimum analytical conditions, the electrochemical sensor exhibited linear response to artemisinin in the concentration ranges from 1.1×10^-8 mol/L to 3.0×10^-6 mol/L, with a detection limit of 1.2×10^-9 mol/L(S/N of 3). In addition, the stability and reproducibility of this sensor was also evaluated and gave satisfactory results.
- Artemisinin,
- Graphene,
- Ag nanopaticles,
- Modified electrode
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沈阳化工大学材料科学与工程学院沈阳 110142