Abstract
An electrochemical biosensor is a potential and innovative analytical device, which has drawn great interest in the field of bio-molecular sensing since the last few decades, due to their high sensitivity and selectivity to diagnose biomarkers and determine biological species. Generally, metal-free electrochemical biosensors, utilizing electrode materials such as carbonaceous nanomaterials (e.g., graphene (GN), CNT, carbon quantum dot (QD), carbon nano-fiber, etc.), and conducting polymers (CPs) are of particular importance in bio-sensing, because of their interesting physical and electrochemical properties. In this chapter, we will study different perspectives of various types of metal-free electrode materials for electrochemical biosensors.
