Nanoflakes of alpha-Fe2O3 were prepared on Cu foil by using a thermal treatment method. The nanoflakes were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and Raman spectroscopy. The reversible Li-cycling properties of the alpha-Fe2...
Raman spectra摘要 We investigate the structural and transport properties of Mn doped hematite (alpha-Fe2O3). The X-ray diffraction pattern identifies the single-phase and corundum (Al2O3) type structure of the polycrystalline samples Fe2-xMnxO3 (x = 0, 0.01, 0.10 and 0.50). The resistivity...
The chemical composition, material structure, acid-base properties, and structure-activity relationship of (alpha-Fe2O3)(1-x)(V2O5)(x) catalysts were systematically analyzed by the techniques of XRD, XPS, TEM, N-2 adsorption-desorption, Raman, UV-Vis, ESR, NH3/CO2-TPD and Pyridine-IR. ...
A study of the crystal structure of Fe2O3in the pressure range up to 65 GPa using synchrotron radiation High-pressure X-ray powder diffraction has been performed on corundum-type αFe2O3 (hematite) in the pressure range up to 65 GPa using synchrotron radiatio... JS Olsen,CSG Cousins,L ...
By immersing mica modified with cetyltrimethylammonium bromide (CTAB) into the silver colloid, a high efficient surface enhanced Raman scattering (SERS) ac... W Gang,H Zhou,Z Liu,... - 《Applied Surface Science》 被引量: 108发表: 2005年 Dip-Pen Nanolithography with Magnetic Fe2O3 Nanocryst...
The morphologies and structure of the samples were characterized by means of SEM, TEM, EDS, XRD, Raman and XPS. The results show that the alpha-Fe2O3@C hollow spheres deliver high reversible lithium storage capacity and good cycling stability (initial discharge/charge specific capacity of 1377...
The Raman-scattering spectrum of the synthesized nanocubes exhibited several Raman-active modes which further confirmed the formation of pure alpha-Fe2O3. As a functional material, the synthesized alpha-Fe2O3 nanocubes were used as electrode material to fabricate ethanol gas sensor which was tested...
The Raman and FTIR spectra further confirmed the formation of Fe and O vibration modes. The optical reflection edges shifted toward higher wavelength with the increase in reaction temperatures and bandgap decreased from 2.88 to 2.74 eV. The Brunauer-Emmett-Teller results showed that the large ...
When the annealing temperature is increased to 750 degrees C and 850 degrees C, alpha-Fe2O3 impurity phase is formed along with the parent NFO phase. Raman spectra recorded at room temperature (RT) confirm the presence of , pure NFO phase for the sample annealed at 650 degrees C, and ...
Facile hydrothermal process was used to synthesized the nanocubes and characterized by several techniques which confirmed the large-quantity synthesis, well-crystallinity with rhombohedral structure of alpha-Fe2O3. The Raman-scattering spectrum of the synthesized nanocubes exhibited several Raman-active ...