Abstract：A heterogeneous catalyst with TiO2 as carrier(Fe/TIO-P25) was prepared using TiO2P25(TIO-P25) and Fe(NO3)3 as precursors, its synergistic effects with H2O2 assistance were also studied using prometryn as model pollutant. XRD, XPS, EDS and SEM analytical results indicated that iron element was highly dispersed on the surface of TIO-P25 with the form of Fe2O3, its loading was about 1.5% (wt%), and had not evident influence on the particle size and microscopic morphology of TIO-P25, the particle size of Fe/TIO-P25 was about 20~40nm. The photocatalytic results indicated that prometryn could be degraded by Fe/TIO-P25 with H2O2 and visible light assistance, the degradation ratio could be 100% after 30minutes reaction, and the degradation efficiency was far more than TIO-P25, showing evident synergistic effects between immobilized iron and TIO-P25. Fluorescence spectrum analysis indicated that the reaction process was not limited to the generation of hydroxyl free radicals (·OH) in the system.
唐建军, 陈益清, 李文龙. TiO2及负载Fe(Ⅲ)可见光催化H2O2降解扑草净的协同效应[J]. 中国环境科学, 2015, 35(3): 777-782.
TANG Jian-Jun, CHEN Yi-Qing, LI Wen-Long. The synergistic effects of prometryn degradation with H2O2 photocatalyzed by TiO2 and loading Fe3+ under visible irradiation. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(3): 777-782.
