Abstract

A new method is proposed for producing nanodisperse ceriabased solid solutions, involving microwave-hydrothermal (MW-HT) treatment of aqueous solutions containing salts of cerium and dopant elements and hexamethylenetetramine (HMTA). The specifics of HMTA hydrolysis under hydrothermal conditions are studied. Xray and electron diffract ion, Raman spectroscopy, and transmission electron microscopy are used to analyze the physicochemical characteristics of Ce1 - xGdxO2 - x/2 (x = 0.10, 0.15, 0.20) nanocrystalline solid solutions produced using the new method.

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