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This paper reports a stable heterogeneous nanoparticles catalyst MnFe_2O_4@PANI@Ag for the degradation of azo dyes.In this synthesizing method,MnFe_2O_4 is used as magnetic core and polyaniline(PANI)a linker to stabilize the Ag nanoparticles(NPs) on the surface of catalyst.The method has a high ability to prevent Ag NPs from aggregation on the PANI surface,thus resulting in small size and highly dispersed Ag NPs.The composition and nano-structural features of polycrystalline sample were studied by X-ray powder diffractometry,Fourier transform infrared spectroscopy,and scanning electron microscopy.Vibrating sample magnetometer measurements proved the super-paramagnetic property of the catalyst,and UV results demonstrated that MnFe_2O_4@PANI@Ag has a high ability to reduce the azo dyes,which come from industrial wastes in the form of pollutant.The nanocomposites could be readily separated by magnet and reused for the next four reductions with high generation efficiency.
This paper reports a stable heterogeneous nanoparticles catalyst MnFe 2 O 4 @ PANI @ Ag for the degradation of azo dyes. In this synthesizing method, MnFe 2 O 4 is used as a magnetic core and polyaniline (PANI) a linker to stabilize the Ag nanoparticles (NPs) on the surface of catalyst. The method has a high ability to prevent Ag NPs from aggregation on the PANI surface, thereby resulting in small size and highly dispersed Ag NPs.The composition and nano-structural features of polycrystalline sample were studied by X-ray powder diffractometry, Fourier transform infrared spectroscopy, and scanning electron microscopy. Vibrating sample magnetometer measurements proved the super-paramagnetic property of the catalyst, and UV results exemplary that MnFe_2O_4 @ PANI @ Ag has a high ability to reduce the azo dyes, which come from industrial wastes in the form of pollutant. The nanocomposites could be readily separated by magnet and reused for the next four reductions with high generation efficiency.