A Non-Enzymatic Glucose Sensor Based on Pd-Fe/Ti Nanocomposites

作者：Yang, Chen; Cui, Xiaolu; Wang, Kaili; Cao, Yu^*; Wang, Chengyin^*; Hu, Xiaoya

来源：International Journal of Electrochemical Science, 2017, 12(6): 5492-5502.

DOI：10.20964/2017.06.55

• nanoparticles
• glucose
• non-enzyme sensor
• cyclic voltammetry
• chronoamperometric

A novel non-enzyme glucose sensor is constructed based on the three-dimensional Pd-Fe networks deposited on Ti substrates directly by a one-step chemical reduction method in aqueous solutions. Scanning electron microscopy (SEM) and energy-dispersive spectrometry (EDS) were used to characterize the as-synthesized nanoporous Pd-Fe composites. Amperometric and voltammetric methods were applied to evaluate the electrocatalytic activity of the modified electrodes toward non enzymatic glucose oxidation in a 0.50 M NaOH at selected potentials. The prepared Pd-Fe/Ti electrode exhibits an excellent electrocatalytic activity, a wide linear range for glucose concentration from 2.0x10(-3) to 3.0 mM (R = 0.9981), the sensitivity is 3.2x10(2) mu A mM(-1) cm(-2), and the detection limit was found to be 1.0X10(-3) mM (S/N = 3). It also shows good anti-interference capability in the presence of uric acid (UA), ascorbic acid (AA) and 4-acetamidophenol (AP). These results indicate that this Pd-Fe/Ti electrode has a potential application as a non-enzyme glucose sensor.

• 出版日期2017-6
• 单位扬州大学