Metal nanoparticles (NPs) are described in the nanoscale and made from either pure metals or
their compounds such as oxides. Metallic NPs have certain indistinct functional groups due to which
these can bind with any type of ligand, antibody and drugs. Organic polymers, which conduct electricity,
are called conducting polymers (intrinsically conducting polymers). They behave like semiconductors by
exhibiting metallic conductivity. Process-ability is the major advantage of conducting polymers. Nanocomposite
is a novel material having nano-fillers scattered in a matrix with morphology and interfacial
characteristics of nano-composites including their individual property that influence their characteristics.
Conducting polymers and NP composites can enhance the rate of electron transport between the current
collector material (electrode) and the electrolyte; therefore they have been employed in the construction
of improved electrochemical sensors such as amperometric, catalytic and potentiodynamic affinity sensors.
Keywords: Metal nanoparticles, Zinc oxide nano-particles, Gold nanoparticles, Conducting polymers, Electrochemical biosensor,
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