研究目的
To explore the catalytic activity of p(HEA-APTM)-BiOI in the presence of PMS and visible light; to probe the effects of different variables (the molar radio of [PMS]/[MP], initial pH, Cl- and HCO3- concentration) on the MP degradation efficiency in the system; to reveal the mechanism of PMS activation during the reaction and propose a plausible degradation pathway.
研究成果
A novel and efficient catalytic oxidation system, p(HEA-APTM)-BiOI/PMS/Vis, was constructed to investigate the degradation of MP in aqueous solution. The system can effectively degrade 99% MP in 90 min, which was much higher than the p(HEA-APTM)-BiOI/H2O2 (PS)/Vis system. Moreover, the system possessed excellent pH tolerance in the acid to alkaline range and anti-interference ability except that the HCO3- exhibited moderately negative effects on the degradation of MP.
研究不足
The catalyst surface chemistry has been changed in a highly oxidized environment, and the decrease of active sites due to partially oxidation or destruction of active radicals generated by PMS activation; the inevitable loss of bismuth leaching under acid condition.
