Cobalt transmission electron microscopy

Transmission electron microscopy (TEM) The dispersion of cobalt oxide species on the titania supports were determined using a JEOL-TEM 200CX transmission electron spectroscopy operated at 100 kV with 100k magnification. 

Ferromagnetic resonance (PMR) spectra of cobalt mcial were recorded at X-band frequencies on a Varian E-4 spectrometer. DPPH and weak pitch were used as standards for g factor. Transmission electron microscopy (TEM) was done with JEOL 200CX microscope using 160 KeV electrons. 

The transmission electron microscopy experiments reported here show that the particles of iron and cobalt are extremely small and that the microwave plasma procedure does not lead to degradation of... 

Highly cubic ordered cobalt oxides have been successfully synthesized from KlT-6 by an accurately controlled incipient wetness approach. The adding volume of cobalt nitrate and absolute ethanol were determined by the pore volume of KIT-6, and the synthesis procedure is effective and economical. Furthermore, the obtained mesoporous cobalt oxides have better mesostructure comparing with those of former reports. The X-ray diffraction, N2 sorption isotherms, transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS) and Fourier-transform infrared spectroscopy were used to characterize the as-synthesized mesoporous cohalt oxides. 

A comparison of the transmission electron microscopy (TEM) images between the Al O - and AlPO -coated LiCoO particles is shown in Fig. 10.6. In both cases, the aluminum or phosphorus elements are distributed over the LiCoO surfaces. The possible formation of a solid solution from a reaction between the coating materials and lithium (or even cobalt) during the heat treatment is not ruled out. 

FIGURE 2.5 Transmission electron microscopy images of polystyrene-coated cobalt nanoparticles with particle diameter of 32 nm after oxidation for 1 week. (Reprinted with permission from Keng, P.Y. et al., 2009, ACS Nano, 3, no. 10, 3143-3157. Copyright 2009 American Chemical Society.)... 

FIGURE 12.1 Transmission electron microscopy image of kaolinite particle showing surface precipitation of Al(OH)3. Mottled appearance resnlts from precipitation of the A1(0H)3 phase on basal surface. (Reprinted from Geochimica et Cosmochimica Acta, 63, Thompson et al., Dynamic interactions of dissolution, surface adsorption, and precipitation in an aging cobalt(II)-clay-water system, 1767-1779. Copyright 1999, with permission from Elsevier.)... 

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