Novel Bi4NbO8Cl/g-C3N4 nanocomposite for improved photocatalytic degradation of methylene blue dye under visible led light illumination

Abstract

A novel visible-light-responsive Bi4NbO8Cl/g-C3N4 nanocomposite photocatalyst was hydrothermally produced using Bi4NbO8Cl and g-C3N4. Methylene Blue'(MB) deterioration under visible LED light is an emergent dye pollution. The photocatalytic efficiency of the nanocomposite materials was evaluated using irradiation. At an ideal mass ratio of 1:2 (50mg of Bi4NbO8Cl to 100 mg of g-C3N4), the 50-Bi4NbO8Cl/g-C3N4 (50-BNOC/UGCN) nanocomposite was found to have the best photocatalytic degradation efficiency toward MB. The photocatalytic degradation of MB (10 mg/l) by 50-Bi4NbO8Cl/g-C3N4 (1 g/l) during 60 minutes of visible 20W LED light irradiation was 99.35%. The development of Z-scheme heterojunctions, which led to reduced recombination of photogenerated electron-hole pairs and improved visible light absorption, was responsible for this enhanced performance. The results not only demonstrate the construction of the Bi4NbO8Cl/g-C3N4 nanocomposite for the successful degradation of resistant pollutants by photocatalysis at affordable prices and energy efficiency, but they also promote the development of related photocatalysts aimed for environmental remediation.