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Abstract
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As a potent analytical tool, electrochemical sensors have demonstrated superior abilities to detect electroactive chemicals, particularly environmental contaminants. In order to overcome the limitations of electroanalytical techniques, using highly selective and sensitive electrodes with various modifiers is required. Among the different electrode modifiers, tungsten trioxide nanoparticles have demonstrated interesting properties in electrochemistry, which increases their application potential in electrochemical sensors. As tungsten oxide and graphene are interested materials on the electrodes surface, we aim to simultaneously take advantage of graphene's conductivity and high surface to volume ratio as well as tungsten oxide's catalytic ability for the determination of important analytes such as hydrogen peroxide. It is expected that by using graphene and tungsten oxide on the surface of the modified electrodes, the sensitivity of hydrogen peroxide measurement will increase and we will be able to measure this compound in lower concentrations
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