Insight into the photodegradation mechanism of bisphenol-A by oxygen doped mesoporous carbon nitride under visible light irradiation and DFT calculations

Abstract

Glucose is an excellent oxygen atoms donor for synthesising oxygen doped mesoporous carbon nitride (O-MCN). The oxygen doping created sub-gap impurity, preserved surface area and created broad pore size distribution to enhance the photodegradation of bisphenol A (BPA).

Key Role of Valence Band Position in Porous Carbon Nitride for Photocatalytic Water Splitting

“…Most photocatalytic materials present unbalanced photocatalytic properties between two half-reactions. Likewise, the focus on the application of carbon nitride is the strong hydrogen-producing ability rather than the weak oxygen-producing ability. , In fact, the insufficient oxygen-producing overpotential of carbon nitride leads to a low oxidation capacity, limiting applications in broader fields. Therefore, besides narrowing the band gap , to broaden the absorption spectra, the effort of decreasing the VBP to break the bottleneck of oxygen production is considered a new horizon to improve the photocatalytic efficiency.…”

“…Likewise, the focus on the application of carbon nitride is the strong hydrogen-producing ability 16 rather than the weak oxygenproducing ability. 17,18 In fact, the insufficient oxygen-producing overpotential of carbon nitride leads to a low oxidation capacity, limiting applications in broader fields. Therefore, besides narrowing the band gap 19,20 to broaden the absorption spectra, the effort of decreasing the VBP to break the bottleneck of oxygen production 21 question, the electrical energy band structure of carbon nitride in this study has been tailored to construct a system with an equivalent overpotential between hydrogen and oxygen production.…”