A sensitive voltammetric sensor for taxifolin based on graphene nanosheets with certain orientation modified glassy carbon electrode

作者：Wang, Fei; Wu, Yanju; Lu, Kui^*; Ye, Baoxian

来源：Sensors and Actuators B: Chemical , 2015, 208: 188-194.

DOI：10.1016/j.snb.2014.11.008

• Graphene oxide
• Pulse potential
• Voltammetric sensor
• Taxifolin

The electrodeposition of reduced graphene oxide (ERGO) film with preferred vertical orientation was fabricated on a glassy carbon electrode by using pulse potential method in a graphene oxide colloidal solution. Using square wave adsorptive stripping voltammetry (SWASV), the ERGO film was applied for the first time, in developing a high-sensitive electrochemical sensor for detection of taxifolin. Compared with bare glassy carbon electrode (GCE), the resulting electrodes (ERGO/GCE) exhibited excellent response toward the redox of taxifolin by significantly enhancing the redox peak currents and decreasing the peak-to-peak separation. Under the selected conditions, the peak currents were linear relationship with taxifolin concentration in the range of 1.0 x 10(-8)-1.0 x 10(-6)mol L-1, with detection limit of 2.0 x 10(-9)mol L-1. Besides, the ERGO/GCE also exhibited an excellent selectivity, stability, reproducibility and repeatability.

• 出版日期2015-3-1
• 单位郑州大学; 河南工程学院