Journal
NANOMATERIALS
Volume 10, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/nano10061023
Keywords
gamma-Bi2O3; nanoparticles; metastable; Raman scattering; x-ray diffraction; oxygen vacancies
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Funding
- ministry of science and technology (MOST) of the Republic of China [MOST-107-2112-M-259005-MY3, MOST-107-2811-M-259-005]
- MOST
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We report the synthesis of room temperature (RT) stabilized gamma-Bi2O3 nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable gamma-Bi2O3 NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectroscopy. gamma-Bi2O3 NPs exhibited a strong red-band emission peaking at similar to 701 nm, covering 81% integrated intensity of photoluminescence spectra. Our findings suggest that the RT stabilization and enhanced red-band emission of gamma-Bi(2)O(3)is mediated by excess oxygen ion vacancies generated at the octahedral O(2) sites during the annealing process.
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