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Self-organized vertically aligned or entangled randomly-oriented carbon nanotubes films filled with ferromagnetic Fe-based phases have recently attracted a great attention for numerous applications as potential electrodes. However the large difference between their synthesis –i) methods, -ii) parameters or –iii) the specific hydrocarbons-requirement have posed many challenges in the growth-selection...
We report an advanced chemical vapour deposition approach which yields not previously observed carbon-based foam-like films completely filled with a single phase of α-Fe. These films are found in the region of the chemical vapour deposition reactor where the temperature is relatively low (650–770 °C) and exhibit a high saturation magnetization as high as 200–220 emu/g at room temperature when small...
Multi-layer graphene standing on polycrystalline SiC microspheres was prepared by pyrolyzing liquid polysilacarbosilane. The lateral dimension of the multi-layer graphene is ∼100nm and the average diameter of the microspheres is ∼0.9μm. The growth of the multi-layer graphene is proposed to be initiated by phase separation of the microspheres, and facilitated with both crystallization inside and chemical...
A simple strategy was developed for the preparation of a graphene oxide (GO) colloid with good water-solubility and stability by the reaction of graphite oxide with nitric acid. The as-prepared GO colloid was characterized by atomic force microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy. The results demonstrated that the...
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