APPLICATION OF NANOCOMPOSITES BASED CARBON PASTE ION SELECTIVE ELECTRODES

Nanocomposites are composites in which at least one of the phases shows dimensions in the nanometer range .The unique chemical and physical properties of nanocomposits make them extremely suitable for designing new and improved sensing devices, especially electrochemical sensors. Nanocomposites have been used for constructing electrochemical sensors and can play different roles in different sensing systems. The important functions provided by nanoparticles include the immobilization of biomolecules, the catalysis of electrochemical reactions, and the enhancement of electron transfer between electrode surfaces and reactant. Ion selective electrodes(ISEs) as a simple sensor have several advantages, for example speed, ease of preparation and procedures, simple instrumentation, short response time, no contamination, nondestructive, unaffected by color or turbidity, wide dynamic range, and reasonable selectivity. Over the past five decades, carbon paste has become one of the most popular electrode materials used for the laboratory preparation of various electrodes, sensors, and detectors. In this article we investigated on the advances in application of nanocomposite in carbon paste ion selective electrodes in recent years

Keywords:

Nanocomposite , Carbon paste , Ion selective electrode