An efficient sensor surface is crucial in design of a carbon-based
electrochemical sensing device when an ultralow and selective detection is required .
Today, functional nanomaterials are synthesized and applied for sensor surface
engineering to lower the limit of detection, rapid signal, and for onsite analysis results.
This chapter surveys widely used materials that are applied to modify the carbon
electrode. Besides, modification strategies, application in sensing, and the reported
results are briefly discussed.
Keywords: Carbon electrode, Electrochemical detection, Modification, Sensor.
