Synthesis of One-Dimensional Nanostructures of CeO2–10% Y2O3 Oxide by Programmed Coprecipitation in the Presence of Polyvinyl Alcohol

Resumo

Hierarchical nanostructures based on rodlike particles of the composition CeO₂–10% Y₂O₃ were obtained by programmed direct coprecipitation of metal hydroxides in the presence of polyvinyl alcohol. The effect of the concentration of the structure-forming polymer template on the morphology of the formed oxides was shown. The dependence of the particle size and microstructure of the products on the polyvinyl alcohol concentration in the reaction system was identified. Simultaneous thermal and X-ray powder diffraction analyses determined that the polymer during precipitation is incorporated into the structure of the produced nanopowder, preventing coarsening of particles during heat treatment.