Enhanced the Synergistic Effect of Tetracycline Adsorption and Photocatalytic Degradation on a Mesoporous Carbon Nitride

A mesoporous g-C3N4 with guanidine hydrochloride as precursor was prepared by molten salt assisted hard template of silica (SiO2) aerogel for photocatalytic degradation tetracycline (TC). The study shows that the successfully synthesized presented a coral-like rod shaped and heptazine ring structure. When amount SiO2 1.4 g, lower band gap (2.31 eV) sample (GM-1.4) interfacial resistance displayed. rate GM-1.4 TC reached to 100% under visible illumination 210 min, efficiency enhanced synergistic effect adsorption. Furthermore, rich porous structure provided more active sites, boosted separation transfer photoexcited charge carriers, then production main species ·O2− h+, resulting in efficient destruction intrinsic functional groups molecules.