Abstract:Methyl Orange was used as target for exploring the catalytic ability of Fe-MnOx. In the experiment

the factors of calcination temperature (300°C

400°C

500°C

600°C and 700°C) and doping ratio of Fe/Mn (Fe/Mn=1/3

Fe/Mn=1/1 and Fe/Mn=1/3) were studying to determine the optimal catalyst preparation condition. The Fe-MnOx with the highest catalytic ability was characterized by XPS

XRD

SEM and BET. The result showed that Fe-MnOx

prepared under the conditions of 400°C calcination temperature and Fe/Mn=1/1

exhibited the highest catalytic

after 20min reaction

the degradation of Methyl Orange was 70.26%

which increased by 32.29% when compared with that in the sole ozonation. With addition of Tert-butano(TBA)

the degradation of Methyl Orange was inhibited partly

which indicated that the reaction mechanism not only involved of the hydroxyl radical reaction mechanism

but also involved of other reaction mechanism. In order to further understand the intrinsic relationship between catalytic activity and internal structure of the catalyst

the Fe-MnOx with best catalytic activity was characterized by XPS

TEM

XRD and BET

which indicates that the Fe-MnOx consisted of Fe2O3

FeO(OH)

MnO2 and Mn5O8.Besides

the catalyst was in uncertain crystal and evacuated structure

corresponding to an big specific surface area of 117.81 m2/g.