Reactive template strategy for fabrication of MnO₂/polyaniline coaxial nanocables and their catalytic application in the oxidative decolorization of rhodamine B
2013
Han, Jie | Wang, Minggui | Cao, Shiyi | Fang, Ping | Lu, Song | Chen, Rong | Guo, Rong
MnO₂/polyaniline (PANI) coaxial nanocables were fabricated through an oxidative template route, where MnO₂ nanorods were selected as the reactive templates for polymerization of aniline in acidic aqueous solution. It was found that PANI could be coated on the surfaces of MnO₂ nanorods, accompanied by dissolution of the MnO₂ cores, leading to the formation of coaxial nanocable structures. Consequently, the compositions and structures of the MnO₂/PANI coaxial nanocables could be simply controlled by determining the reaction time. Thermogravimetric analysis, Fourier transform infrared spectrometry, X-ray diffraction, ultraviolet-visible spectrophotometry, and N₂ adsorption–desorption techniques were used to characterize the MnO₂/PANI coaxial nanocables. Furthermore, the catalytic activities of the MnO₂/PANI coaxial nanocables in the oxidative decolorization of Rhodamine B were also investigated.
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