The XRD spectra clearly indicated the formation of pure g\\gamma -Fe2O3 nanoparticles and the absence of any other form of iron oxide. TEM images showed a uniform distribution of the nanoparticles of size ~ \\sim 6 nm on the surfaces of silica spheres (diameter ~ \\sim 35-60 nm). ...
Dynamic X-ray diffraction (XRD) was performed using a X′Pert PRO diffractometer (PANalytical, Netherlands) at 40 kV and 40 mA, with Cu Kα radiation (λ = 1.540 Å), and a scanning-rate of 8°/min from 10° to 60°. Show abstract Macroscopic and spectroscopic characterization of U...
RT，另外a-Fe2O3到底有没有磁性？能否用吸铁石吸起来？
计划和湖南省重点学科建设项目(2011-76)资助 摘要 结合水热法和超声法的优点, 首先用水热法合成出晶粒尺寸约为15 nm 的Fe 3 O 4 纳米实心 球, 用硝酸处理并最终在硝酸铁溶液中超声 Fe 3 O 4 纳米实心球, 得到了晶粒尺寸约在 5 nm 的 -Fe 2 O 3 纳米空心球. X 射线衍射(XRD)、X 射线散射能谱(...
12 and approx. 600 MeV at laboratory angles of 30/sup 0/, 45/sup 0/, 60/sup 0/, and 90/sup 0/. The neutron spectra above approx. 30 MeV are comparable with the predictions of a ''firestreak'' calculation. The neutron spectra differ from proton spectra reported for U and Pb....
From XRD analysis, the crystalline phase and size of the Fe2O3 and Fe2O3/ZnO nanoparticles were estimated. Analyzing the peaks belonging to the Fe2O3 (Figure 1), the diffraction peaks match the standard rhomboeric pattern, having the characteristics (012), (104), (110), (113), (024...
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 -Fe 2 O 3 particles were capped with the diol. Mssbauer spectra of the 6...
The techniques employed were XRD, nitrogen adsorption at 196 °C and catalytic conversion of ethanol and isopropanol at 250–400 °C using micropulse technique. The results showed that the supported solids being calcined at 400 °C consisted of well crystallized CuO, NiO, Fe 2 O 3 and AlOOH...
The isothermal decomposition process of gamma-Fe[N] (9.32 at.% N) prepared by a two-step gas nitriding method was investigated in-situ by X-ray diffraction (XRD). The XRD spectra showed that the alpha-Fe phase precipitated first from the parent austenite when the sample was aged at 225 ...
The properties of $\\gamma$ -Fe 2 O 3 nanoparticles without silica were compared with those on silica spheres. Both the nanoparticle assemblages were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Mssbauer (20, 80 and 300 K) and electron paramagnetic ...