Graphitic carbon nitride for photoelectrocatalysis

Unlike other material, graphitic carbon nitride (g-C3N4) is a polymeric 2D material, which consisting of C and N with tris-triazine units and possess some impurities of H. This g-C3N4 could compete with other major carbon materials due to its electron-rich properties acquired using surface functionalities and their bonding with H motifs in the occurrence of N and H atoms. In this chapter, these graphitic carbon nitride have been exemplified for their potential application in photoelectrocatalytic studies. Moreover, this chapter would summarize the fundamental mechanisms of photoelectrocatalysis, its influencing parameters followed by enhancement of its properties by incorporation with metal oxide, metal nanoparticles, conducting polymers, and nanohybrid/composite materials. In addition, the photoelectrocatalytic degradation of pollutants with improvement in photogenerated charge carriers as well as inhibition of recombination effect of electron-hole pairs were discussed in detail.