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Showing 1 to 8 of 8 for “"homogeneous precipitation"”.
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Growth Rate of Barium Chromate Crystals.
… This was achieved by themethod of controlled homogeneous precipitation from solutions oflow pH. However, this was not an optimum operation. Two basicrequirements were established for the quantitative study of thekinetics of barium chromate crystallisation. The first requirement was a knowledge …
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Study of Substituted Benzenesulfonate-Containing Layered Double Hydroxides and Investigation of the Hexamethylenetetramine Route of LDH Synthesis
… to verify if the mechanism is indeed homogeneous. This included attempting preparation of 2:1 Mg-Al LDH, 2:1 Zn-Al LDH and 2:1 Zn-Cr LDH with two different concentrations of hexamethylenetetramine. The analytical data of the products suggest that the homogeneous precipitation may not …
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Phosphors and photonic crystals
… RE phosphors have been prepared using the urea homogeneous precipitation method and firing. Stokes luminescence properties of Y2WO6: RE excited with a FRED (frequency doubled argon ion) UV laser (257 nm) have been studied. The emissions have been assigned to their corresponding energy levels. …
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Precipitation techniques and characterisation of rare earth element doped phosphor materials
… first aim was to study the use of a number of precipitation methods to control the size and morphology of precursor phosphor materials for potential applications in a new generation of high definition and field emission displays. The morphological and luminescent characteristics of these …
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Baldcypress Growth in South Carolina and Georgia: Lapses in its Correlation with Spring Precipitation
… between growth indices and local spring precipitation, stream flow and drought data for the Baldcypress chronologies on the Georgia/South Carolina (GA/SC) coastal plain. The correlations of Baldcypress tree ring growth with local growth season precipitation-related indicators exhibit a …
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Cobalt core-shell nanoparticles as precursors for cobalt-based Fischer-Tropsch synthesis catalysts
… around the core was studied by following a homogeneous precipitation synthesis. It was established that a two-step synthesis route was needed to synthesize the core-shell material with a fairly uniform Co3O4 shell. It was found that for both NiFe2O4@Co3O4 and ZnFe2O4@Co3O4 core-shell …
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TIMELESS QUESTIONS AND MODERN CHALLENGES: A JOURNEY FROM THE ORIGIN OF LIFE IN HYDROTHERMAL VENTS TO ELECTROCHEMICAL CO2 REDUCTION
… and Violarite [(Fe,Ni)3S4] have been prepared by homogeneous precipitation method, obtaining the materials in powder form. The samples have been widely characterized in terms of crystalline structure, particle dimensions, porosity, and surface oxidation state. A series of “mineral-based electrode” …