关键词: 蒙脱土, 聚吡咯/STAB-钠基蒙脱土/GC电极;对苯二酚;电化学行为

Abstract: The PPy/STAB-MMT/GC electrode was made using montmorillonite modified by STAB and polypyrrole (PPy). The electrochemical behaviors of hydroquinone on the PPy/STAB-MMT/GC electrode were researched by cyclic voltammetry and square wave stripping voltammetry (SWSV). The results showed that the electrode reaction occurred on the hydroquinone electrode was controlled by diffusion in PBS (pH=6.0). The number of electron transfer was equal to the number of protons (n=m=1) with the effective area of PPy/STAB-MMT/GC electrode Aeff=0.031 cm2. Under the optimized conditions, the linear response of peak current in SWSV with the concentration of hydroquinone in a range of 8.0×10-6~8.0×10-4 mol/L was observed, and the detect limitation was 1.0×10-6 mol/L. The recovery of hydroquinone to testing requirements was satisfactory.

Key words: montmorillonite, PPy/STAB-MMT/GC electrode, hydroquinone, electrochemical behavior