It was concluded that ε-Fe2O3is an intermediate phase between γ-Fe2O3andα-Fe2O3and a series of distinct Raman vibrational bands were identified with the ε-Fe2O3phase. The structural transformation of γ-Fe2O3intoα-Fe2O3occurs either directly or via ε-Fe2O3, depending on the...
Characterisation was done by XRD, FTIR and Raman spectroscopy. TEM showed that the average particle size of the two samples were 9 nm and 6 nm with a small particle size distribution. FTIR and TG showed that the -Fe2O3 particles were capped with the diol. Mössbauer spectra of the 6 ...
nanocrystallinecapped gamma-Fe2O3Nanocrystalline gamma-Fe2O3 was prepared by refluxing ferric nitrate in 1,4-butanediol. Characterisation was done by XRD, FTIR and Raman spectroscopy. TEM showed that the average particle size of the two samples were 9 nm and 6 nm with a small particle size ...
By carefully controlling the reacting conditions, including atmosphere, temperature, and time, we directly acquire the nanowires of gamma-Fe2O3 from the nanowires of alpha-Fe2O3 in a reduced atmosphere. X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectrum, and transmission electronic...
It is integrated with ultrasensitive surface-enhanced Raman scattering imaging, high-resolution photo-acoustics imaging, real-time magnetic resonance imaging, and photothermal therapy capabilities.doi:10.1002/adma.201501942Huang, JieGuo, MiaoKe, Hengte...
Formation of these phases of iron oxide with variation in sols' molarity is also confirmed using FTIR spectra and Raman spectroscopy. Iron oxide nanoneedles show soft magnetic behavior with high saturation magnetization of 73.2, 43.43, and 75.18 emu/g at 0.2, 1.0, and 2.0 mM sols, respectively...
Morphology, composition, and structural properties of our economically sound photocatalyst are characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy, thermo-gravimetric, transmission electron microscopy, inductively coupled plasma, RAMAN and Fourier-transform infrared spectroscopy. (C) 2014 ...
Heating stage Raman microscopy reveals that the temperature of transition to maghemite phase up to hematite is 550 degrees C. The heating of our maghemite (gamma-Fe2O3) powder up to 550 degrees C yields a single phase of Hematite hexagonal-corundum structure with R (3) over barc space ...
Varadwaj KSK, Panigrahi MK, Ghose J (2004) Effect of capping and particle size on Raman laser-induced degradation of c- Fe2O3 nanoparticles. J Solid State Chem 177:4286-4292Varadwaj, K.; Panigrahi, M.; Ghose, J. Effect of capping and particle size on Raman laser-induced degradation ...
The presence of gamma-Fe2O3, Ag, and a-CN in the nanocomposite was confirmed by X-ray diffraction analysis, UV-visible absorption spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Ag + gamma-Fe2O3@a-CN catalyzed the degradation of methyl orange. This catalyst was also...