Effect of operating parameters on photocatalytic degradation of dyes by using graphitic carbon nitride

Abstract Photocatalysis is an effective way to control industrial pollution and it is extensively used for the removal of various pollutants from wastewater. A metal-free conjugated polymer graphitic carbon nitride (g – C3N4) with its unique structure is becoming a new research hotspot in photocatalysis. Thermal heating of carbon-rich polymer, template-based method, and sol-gel method are the synthesis techniques discussed for g – C3N4 photocatalyst. Modification techniques like chemical functionalization and doping focused on enhancing the photocatalytic activity. Also, g – C3N4-based photocatalyst composites are discussed in this chapter. The effects of different parameters were discussed, such as initial pH, catalyst loading, light intensity, irradiation time, and scavengers. The modified g – C3N4 composites have better photocatalytic activity for dye degradation.