Photo-Fenton degradation of ammonia via a manganese–iron double-active component catalyst of graphene–manganese ferrite under visible light》.pdfVIP

Chemical Engineering Journal 283 (2016) 266–275 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.else /locate/cej Photo-Fenton degradation of ammonia via a manganese–iron double-active component catalyst of graphene–manganese ferrite under visible light Yang Zhou, Bo Xiao, Shou-Qing Liu ⇑, Zeda Meng, Zhi-Gang Chen, Cong-Yang Zou, Cheng-Bao Liu, Feng Chen, Xing Zhou Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry, Biology and Material Engineering, Suzhou University of Scienc e and Technology, Suzhou 215009, China h i g h l i g h t s g r a p h i c a l a b s t r a c t Graphene–manganese ferrite is a A double-active component photo-Fenton catalytic system for the degradation of ammonia. double-active component photo-Fenton catalyst. Both manganese and iron promote simultaneously the degradation of ammonia. Ammonia is degraded into dinitrogen gas, showing the thorough removal of ammonia. Graphene–manganese ferrite is recoverable and reusable. a r t i c l e i n f o a b s t r a c t Article history: Graphene–manganese ferrite (rG–MnFe O ) was developed to degrade NH . It was characterized by X-ray 2 4 3 Received 15 February 2015 diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray Received in revised form 11 July 2015 photoelectron spectroscopy (XPS). The results using rG–MnFe2O4 as a hetero