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Synthesis of Graphene Oxide-Nanozeolite Composite
Electrode for Aspirin Analysis by Cyclic Voltammetry

A graphene oxide-nanozeolite composite was prepared and empolyed as electrode for cyclic
voltammetric analysis of aspirin. Graphene oxide was synthesized with the improved Hummer method,
while nanozeolite synthesized using a mechanical ball milling method. Cyclic voltammetric analysis
of aspirin was influenced by several factors viz. the composition of working electrode, pH, deposition
time and scan rate. The optimized parameters of graphene oxide-nanozeolite composite electrode has
the best composition at a ratio of 3:2:5 at pH of solution 4, deposition time at 5 s and scan rate at 100
mV s-1. A recovery percentage of 99.61% having limit detection of electrode was 0.0611 ppm (0.002
mM).