Modifying the surface of electrochemical sensors

Modifying the surface of electrochemical sensors can increase selectivity. Modifying the surface of electrochemical sensors using various nano-structures has also been successful. Many of the unique physical and chemical properties of nanomaterials have made them promising candidates for gas detection, thereby increasing their sensitivity, mainly due to the high surface-to-volume ratio inherent in nanoparticles that make many active sites for Provides improvement in gas sensitivity [61]. Nanowires, nanotubes, nanofibers, nanospheres, graphene, and other two-dimensional layered materials have so far been promising, although selectivity between similar open analytes can be problematic [110-114]. The composite structures of these nanomaterials are also excellent candidates for chemical sensors and have attracted a great deal of attention in the last decade.