Preparation and Catalytic Performance of Epoxy Ionic Liquid-Bonded Hydroxyl-Modified Graphitic Carbon Nitride for CO2 Cycloaddition

In this study, hydroxyl-modified graphitic carbon nitride materials were synthesized through thermal polymerization combined with the hydrothermal method, and the samples exhibiting the best catalytic activity for the ECH and CO2 cycloaddition reaction were selected. The structural evolution of the material before and after the catalytic reaction was analyzed using various characterization methods, such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS); the effects of reaction temperature, reaction time, CO2 pressure, and catalyst dosage on the catalytic performance of the materials were investigated systematically, and a possible reaction mechanism was proposed based on the above analysis.