Changing the calcination temperature to tune the microstructure and polishing properties of ceria octahedrons.

ABSTRACT: Ceria octahedrons with different microstructure and surface characteristics were prepared by calcining an octahedral CeO₂ precursor self-assembled from spherical primary nanocrystals of about 5 nm at 500-900 °C. Structural characterization revealed that with the calcination temperature increasing from 500 to 700 °C, the products maintained a hierarchical structure and primary nanocrystals changed from spherical to octahedral particles. Significant fusion occurred between the primary nanocrystals and the surface of the octahedrons became smooth at the calcination temperature of 800 °C. Single crystal CeO₂ octahedrons were formed when the calcination temperature reached 900 °C. The change in microstructure induced by elevated calcination temperature led to increased mec

SUBMITTER: Li Y 

PROVIDER: S-EPMC9168675 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature