such as agoethiteprecursor to hematite. A polar landed package demands instruments that can sensemineralogydefinitively, such as XRD for bulk mineralogy and Raman for trace species. The European Lunar Lander includes a Raman spectrometer in its strawman payload (Carpenter et al., 2012). Given the...
Hematite and hematite–akageneite composites. XRD and electrokinetic study and interaction with ionic surfactantsAggregationIonic surfactantElectrophoretic mobilitySpecific adsorptionHematite and hematite-akageneite composites were obtained by hydrolysis of FeCl3 in acidic medium. The IEP of hematite and of ...
Hematite and hematite–akageneite composites. XRD and electrokinetic study and interaction with ionic surfactants Edward Ma˛czka, Marek Kosmulski⇑ Lublin University of Technology, Laboratory of Electrochemistry, Nadbystrzycka 38, 20 618 Lublin, Poland g r a p h i c a l a b s t r a...
XRD pattern of the hematite particles generated after 0.2 h of hydrothermal treatment. Full size image During Fe hydrolysis, OH- was involved in the formation of Fe oxyhydroxides. The residual H+ led to a decrease in solution pH from 0.4 to 0.2 (Fig. 1(C)). In the leaching acid, ...
XRD and electrokinetic study and interaction with ionic surfactants. Hematite and hematite-akageneite composites were obtained by hydrolysis of FeCl3 in acidic medium. The IEP of hematite and of hematite-akageneite composite... E Mczka,M Kosmulski - Joint International Conference on Information ...
XRD results indicate that the final product is a mixture of hematite and goethite (Fig. 7a). This means that, although aging took place in a magnetic field of ~100 μT, the preference for hematite formation was disturbed by the agitation. Therefore, we propose a model in which ...
XRD peak migration and apparent shift of cell-edge lengths of nano-sized hematite, goethite and lepidocrocite 来自 Cambridge Univ Press 喜欢 0 阅读量: 56 作者: Stanjek, H.摘要: X-ray powder diffraction patterns were simulated for nano-sized hematite, goethite and lepidocrocite by three-...
Keywords:InsituXRD;Nanocrystals;XANES;TEM;Kinetics;Maghemite;Hematite;Iron 1.Introductionshowsimilarbehaviorofcubicg-AlOandhexa- 23 gonala-AlO.Informationonthestabilityof 23 Itisknownthatcoarsegrainedmaghemite(g-maghemitewasmostlyobtainedbyDTA[5–7]. FeO)isonlyametastable,lowtemperatureFeOHowever,theinterpreta...
Nanoparticles were studied by means of transmission electron microscopy (TEM), X-ray diffraction (XRD), SQUID magnetometry, and transmission Mössbauer spectrometry (MS). Section snippets Sample preparation Samples of pure α-Fe2O3 phase differing in the mean size of the nanoparticles were prepared...
XRD and TEM analysis confirmed the texturing of a beneficial highly oriented hematite film (110) parallel to the back contact. Nevertheless, lower photocurrents for this post-annealed sample compared to the plasma one indicated that the catalytic centers were not fully recovered at the surface. ...