Combination of porous covalent triazine frameworks with spinel for highly improved photothermal catalytic oxidation of toluene

Abstract

The synergistic effect of adsorption and photothermal can be used to develop new efficient pollutant treatment technologies. Here, porous covalent triazine frameworks modified CuO@CoMn2O4 catalyst (PCTF-CCM) was constructed and applied to the full spectrum driven photothermal degradation of toluene. Toluene conversion and CO2 yield over PCTF-CCM under simulated solar irradiation (optical power density=350 mW/cm2) could be reached 100% and 98% with 40 min. Oxygen vacancies play an important role in thermal and photothermal catalysis by enhancing the adsorption of pollutant gases and the mobility of oxygen. The porous covalent triazine frameworks enriched the concentration of pollutants on the surface of catalyst and significantly improved the water resistant capability, leading to the performance of photothermal catalytic oxidation of toluene highly improved. The designed system extends the range and service life of catalyst in practical applications and provides a new idea for the design of adsorption-photothermal catalyst.