期刊
NANOSCALE
卷 7, 期 12, 页码 5169-5177出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr07308h
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资金
- NSF NIRT for Nanoceria research (NSF) [CBET 1028996]
- EPSRC, UK [EP/H001220, EP/H001298]
- EPSRC [EP/H001298/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H001298/1] Funding Source: researchfish
Single-crystalline ceria nanorods were fabricated using a hydrothermal process and annealed at 325 degrees C-800 degrees 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.
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