We successfully synthesized Cu/Cu2O nanocomposites using the wet chemical synthesis method. All X-ray diffraction (XRD), Reference Intensity Ratio (RIR), and Rietveld refinement methods confirmed that compounds Cu Cu2O are free of impurities. Scanning Electron Microscope (SEM) Transmission electron microscopy (TEM) images show morphology interactions in structure. The formation mechanism is als...

Aqueous tartaric acid-assisted sol–gel preparation technique was successfully applied to synthesise lithium aluminium molybdate with the initial composition of LiAl(MoO4)2. From results thermal analysis and Xray diffraction measurement, effect acid as a ligand on formation homogeneous gel precursor discussed. Besides, X-ray also revealed crystallisation final LiAlMo2O8 ceramic below temperature...

In this study, we report the optoelectric and thermoelectric properties of famatinite Cu3SbS4 that was mechanochemically synthesized in a planetary mill from powder elements for 120 min an inert atmosphere. The tetragonal nanocrystalline with crystallite size 14 nm, as endorsed by Rietveld refinement. High-resolution transmission electron microscopy showed several crystallites range 20–50 nm. R...

Experimental and theoretical studies enabled the reveal of patterns microstructure formation in surface layer Ti-6Al-4V titanium alloy subjected to ultrasonic impact treatment. The mixed amorphous nanocrystalline structure 200 nm thick uppermost dioxide TiO2 was demonstrated using transmission electron microscopy. 5 µm intermediate containing ? grains, 50–60 lower fragmented ?-Ti grains with re...

Growth of an ultrathin lead oxide layer causes massive changes in the shape of lead crystallites. The dynamics of this process was investigated with time-lapsed scanning tunneling microscopy. Pure lead crystallites proved extremely resistant to oxidation. Once nucleated by surface impurities, monolayer films of lead oxide grew readily on lead (111) microfacets in an autocatalytic process. The a...

recently, the al2o3–tio2–zro2 system has found valuable applications, particularly, as a support for nox storage–reduction (nsr) catalysts. nanocomposite powders were prepared from the co-precipitation method in inorganic precursors. the behaviors of mixed oxide nanoparticles under ultrasonic irradiation, such as dispersion, and crushing were studied. phase transformations, crystallite size, an...

The calcination reaction of limestone (CaCO3) to yield lime (CaO) is at the heart of many industrial applications as well as natural processes. In the recently emerged calcium-looping technology, CO2 capture is accomplished by the carbonation of CaO in a gas-solid reactor (carbonator). CaO is derived by the calcination of limestone in a calciner reactor under necessarily high CO2 partial pressu...

Mike Meier University of California, Davis September 13, 2004 Figure 1. FEG-SEM image of nanosized aluminum oxide powder. Note the magnification and the size of the micron bar. Also note how the smaller particles and the edges of the larger particles appear to be somewhat transparent. This is because much of the 5 kV electron beam can pass through these thinner parts of the particles. CRYSTALLI...

A single and self-contained method for determining the crystallite-size distribution and shape from experimental x-ray line profile data is presented. We have shown that the crystallite-size distribution can be determined without assuming a functional form for the size distribution, determining instead the size distribution with the least assumptions by applying the Bayesian/MaxEnt method. The ...