Background: Modified electrodes are a new approach to improving the characteristics of the
electrochemical sensors. The high conductivity and low charge transfer resistance are the major properties
of new mediators for improving electrochemical sensors. Metal-based nanoparticles showed good
electrical conductivity and can be selected as the suitbale mediator for modified electrodes.
Objective: Recently, metal-based nanoparticles, such as Au nanoparticle, TiO2 nanoparticle, Fe3O4 nanoparticle
and etc. were suggested as the suitable mediator for modification of solid electrodes. The
high surface area and low charge transfer resistance of metal-based nanoparticles, suggested the exceptional
intermediate in the electrochemical sensors. Here, we tried to consider these exceptional effects
through reviewing some of the recently published works.
Keywords: Metal-based nanoparticles, electrochemical sensors, Conductive mediators, modified electrodes, solid electrodes,
Rights & PermissionsPrintExport