Abstract
The large-scale uniform triangular prism-like CeO2 nanostructures with rough surface have been purposefully fabricated by a simple and efficient hydrothermal route. X-ray diffractometer (XRD), scanning electron microscope (SEM), X-ray photoelectron spectrum, Raman spectra and photoluminescence (PL) spectra were employed to research the obtained CeO2 samples. It is found that many Ce3+ ions and oxygen vacancies in the surface of cubic fluorite structure CeO2 samples. The possible mechanism involved the dissolution of rod-like structures and followed by the recrystallization of triangular prism-like structures was discovered. Ce3+ ions and oxygen vacancies may account for the similar broad photoluminescence emission bands for all samples, while their different emission intensity is attributed to the effects of morphology and size of the samples.
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This work was supported by the Anhui Provincial Natural Science Foundation (Grant No. 1808085ME130).
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Ni, J., Wang, L. & Geng, X. Controlled synthesis, mechanism and optical properties of triangular prism-like CeO2 nanostructures with corrugated surface. J Mater Sci: Mater Electron 29, 21072–21077 (2018). https://doi.org/10.1007/s10854-018-0254-z
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DOI: https://doi.org/10.1007/s10854-018-0254-z