Piezoelectric synergistic photocatalytic degradation of imidazolium ionic liquids
Ionic liquids were efficiently degraded under piezoelectric synergistic photocatalytic conditions using a dual Z-type ternary catalyst,AgI/Ag3PO4/BaTiO3,which was able to degrade 1-hexyl-3methylimidazolium tetrafluoroborate up to 87.3％in 120 min with an apparent rate constant of 1.7 times that of the best binary catalyst.The results of quenching experiments further demonstrated the synergistic effect of piezoelectric on photocatalysis,·O2-and h+were main active substances for the degradation of 1-hexyl-3methylimidazolium tetrafluoroborate.AgI/Ag3PO4/BaTiO3 has good stability and reusability,and the degradation rate is still more than 80％after three cycles.The double Z-type structure of AgI/Ag3PO4/BaTiO3 can provide additional electron channels and improve the transfer rate of photogenerated carriers;in addition,the built-in electric field generated by piezoelectricity can improve the electron-hole separation efficiency,which provides the high efficiency in the degradation of the piezoelectricity is the most efficient way to degrade pollutants.
万方数据
维普
