Amperometric Detection of Gallic Acid Based on Electrochemically Activated Screen Printed Carbon Electrode

作者：Raja N; Kokulnathan T; Chen Shen Ming^*; Liao Wei Cheng; Priya T Sakthi

来源：International Journal of Electrochemical Science, 2017, 12(6): 4620-4629.

DOI：10.20964/2017.06.22

• Gallic acid
• Amperometric technique
• Cyclic voltammetry
• Activated screen printed carbon electrode

A simple electrochemical sensor based on activated screen printed carbon electrode (ASPCE) was successfully fabricated for the selective and sensitive amperometric determination of gallic acid (GA). The activated screen printed carbon electrode (ASPCE) was fabricated by simple electrochemical technique and it was characterized by using scanning electron microscopy (SEM), Raman spectroscopy and electron impedance spectroscopy (EIS). The electrochemical properties of the electrodes were investigated by the cyclic voltammetry and amperometric method. Interestingly, ASPCE exhibited an excellent electrocatalytic activity in terms of decrease the potential and increase the anodic peak current for the detection of GA when compared to bare SPCE. The ASPCE was successfully determined the GA and it showed good wide linear response range from 0.01 to 1799.6 mu M and the lowest detection limit (LOD) of 0.031 mu M. Moreover, the fabricated sensor electrode was manifested a good selectivity, stability, repeatability and reprodubility. The sensor was applied to the determination of GA in real samples, where it shows good recovery and accuracy. To the best of our knowledge, this electrode is cost effective and excellent performance towards the detection of GA when compared with previously reported other chemically modified electrodes.

• 出版日期2017-6