Exfoliated Porous Carbon Nitride by Simultaneous Oxidation-Corrosion for Photocatalytic H₂O₂ Production and Organic Degradation

Graphitic carbon nitride (g-C₃N₄) is a fascinating material with potential applications in photocatalysis due to its good chemical stability, high thermal stability, and relative ease of synthesis. In this work, ultrathin g-C₃N₄ is constructed using a hybridized method, which combines the advantages of thermal and liquid-phase stripping methods. This sample can improve performance in degrading organic pollutants several times, and the highest enhancement efficiency occurs in an alkaline environment. In addition, photocatalytic production of hydrogen peroxide can be increased to 2.6 times that of the bulk sample. These improved properties are due to the increase in specific surface area, the generation of free radicals, and adsorption capacity. This work presents a one-step exfoliation method for bulk g-C₃N₄ for more surface-active sites and strong redox capacity.