Background of the Study

CNTs are allotropes of carbon in the nano form of a cylinder. In this chapter, the history of generating CNTs, the applications, and chemical properties of CNTs are reviewed. Also, the different generation of glucose biosensors as well as CNTs-based nanocomposite for electrochemical detection of glucose are highlighted. Generally, nanostructures have great potential to explore as simple and easy blood glucose checking medical tools. Electrochemical based oxidation of the immobilized enzymes (glucose oxidase) on CNTs has opened exciting opportunities for the determination of glucose. According to the previous publication related to the CNTs-based biosensor, CNTs display a perfect combination of electrical properties which enhance the sensitivity and selectivity of the fabricated amperometric glucose biosensors.