Phase segregation in cerium-lanthanum solid solutions

Article Abstract:

Electron energy-loss spectroscopy (EELS) in combination with scanning transmission electron microscopy (STEM) has shown that La enrichment at the surface of cerium-lanthanum solid solutions is an averaged effect and that segregation occurs in a mixed oxide phase. STEM-EELS is a powerful method to clarify the existence of a multiphase system and it shows that XRF, XPS and XRD measure averaged results and do not show the phase complexity of the solids.

Analytical Laboratory Instrument Manufacturing, Analytical instruments, Lanthanum & Compounds, Photo-Electron Spectroscopy, Analysis, X-rays, X-ray diffraction, Electron spectroscopy, Lanthanum, Properties, Structure

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MnO(sub 2-) embedded-in-mesoporous-carbon-wall structure for use as electrochemical capacitors

Article Abstract:

An in situ reduction method is presented to synthesize a novel structured MnO(sub 2)/mesoporous carbon (MnC) composite. The results show that different MnO(sub 2) contents could be introduced into the pores of CMK-3 treated with different concentrations of potassium permanganate aqueous solution, while retaining the ordered mesostructure and larger surface area.

Science & research, Manganese Dioxide, Research, Carbon compounds, Chemical properties, Atomic properties, Electrochemical reactions

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Epitaxial synthesis of uniform cerium phosphate one-dimensional nanocable heterostructures with improved luminescence

Article Abstract:

Uniform CePO4LaPO4 and CePO4:Tb(super 3+)@LaPO4 one-dimensional single-crystalline nanocable heterostructures with highly enhanced photoluminescent emission is synthesized. The photoluminescence results for these one-dimensional nanocable heterostructures illustrate that the uniform LaPO4 sheaths remarkably increase the luminescent efficiency.

China, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Nonferrous Metals NEC, Observations, Photoluminescence, Rare earth metals

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