| 저자(한글) |
Zhou, Y.,Xiao, B.,Liu, S.Q.,Meng, Z.,Chen, Z.G.,Zou, C.Y.,Liu, C.B.,Chen, F.,Zhou, X. |
| 초록 |
Graphene-manganese ferrite (rG-MnFe 2 O 4 ) was developed to degrade NH 3 . It was characterized by X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results using rG-MnFe 2 O 4 as a heterogeneous photo-Fenton catalyst showed a degradation of 92.0% was achieved through visible light irradiation of 50.0mgL -1 NH 3 -N solution at pH 10.5 in the presence of 1.0mmol/L H 2 O 2 for 10h. The product for the degradation of NH 3 was identified as N 2 but not NO 2 - or NO 3 - . The degradation of ammonia follows the pseudo first order reaction law, the average apparent reaction rate constant is obtained to be 0.0396min -1 under white light irradiation. XPS measurements showed that Mn(III) and Fe(II) are formed during photo-Fenton degradation of NH 3 , which suggests that Mn and Fe simultaneously participate in the photocatalytic cycle. Thus, rG-MnFe 2 O 4 is a double-effect photo-Fenton catalyst. The double-active catalytic mechanism was explored. |
