Engineering Of Nanoscale Defect Patterns In Ceo2 Nanorods Via Ex Situ And In Situ Annealing

Abstract

Single-crystalline ceria nanorods were fabricated using a hydrothermal process and annealed at 325°C-800°C. As-synthesized CeO2 nanorods contain a high concentration of defects, such as oxygen vacancies and high lattice strains. Annealing resulted in an improved lattice crystalline quality along with the evolution of novel cavity-shaped defects in the nanorods with polyhedral morphologies and bound by e.g. {111} and {100} (internal) surfaces, confirmed for both air (ex situ) and vacuum (in situ) heating. We postulate that the cavities evolve via agglomeration of vacancies within the as-synthesized nanorods.

Publication Date

3-28-2015

Publication Title

Nanoscale

Volume

7

Issue

12

Number of Pages

5169-5177

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c4nr07308h

Socpus ID

84924957542 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84924957542

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