Affiliation:
1. Tom Mboya University, Kenya
Abstract
Development of sensors for analysis of pesticides in environmental samples is essential. Pesticides are essential for growth of crops and flowers; however, due to their adverse effects and those of their metabolites, there is need to monitor their release and toxicological effects in the environment. Electrochemical (bio)sensors have emerged as simple, fast, cheap, portable, and selective devices. To this end, extensive research has been carried out on several nanomaterials that have then been used to modify electrodes, amongst them being graphene (GR). The excellent electrical conductivity, electrocatalytic activity, and large surface area have been the driving force behind the extensive use of GR in construction of electrochemical sensors. These properties can be further enhanced by doping with heteroatoms or functionalizing with polymers and semi-conductor nanomaterials. This chapter outlines the preparations of graphene nanocomposite and their application in sensitive detection of pesticides.