Morphology, phase and chemical composition of the nanostructures formed in the systems containing lanthanum, cerium, and silver

X-ray phase and thermogravimetric analysis, scanning electron microscopy energy-dispersion spectroscopy were used to study the products of formation during precipitation lanthanum cerium salts in presence silver nitrate recipients precipitators, nucleating agents hydrolysis regulators. Thermogravimetric analysis shows completion La(OH)3 lattice dehydroxylation process at a temperature ~ 300 °С probable destruction sulfates 340 °С. The interaction oxide(III) with ends T 400 °C. DTG curve two-stage weight loss, which characterizes hydroxides (250 °C) removal (~ °C), respectively. According TG, total loss is 21.6 %. For cerium-containing system only endothermic effect hydroxide = 250 °C its conversion into dioxide observed. nitrates (anionic component solutions) takes place Weight 150 53.9 Thus, on basis TG-DTA data, it can be assumed that composites particles based oxides, modified silver, diffraction data initial stage undergoes hydroxides, lyophilization precipitate (T 160 crystal partial trigonal oxides La2O3 Ce2O3. It has been found cations solution affect composition lyophilized structures CeO2 phase. shown hydroxylamine chloride injection initiate restoration oxide surface also partially restore LaO Temperature treatment samples °С) promotes homogenization composition: 30 nm clusters evenly distributed surface, hexagonal plates individual as second In three-component systems, two modifications (trigonal cubic), metallic are formed. chemical precipitates contains main elements – La, Ce, O, Ag impurity S or Cl, anionic solutions, N K suspension. morphology represented by oxide, spherical pseudocubic silver.