Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies

We report the synthesis of room temperature (RT) stabilized γ–Bi(2)O(3) nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi(2)O(3) NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectro...

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Autores principales: Gandhi, Ashish Chhaganlal, Cheng, Chia-Liang, Wu, Sheng Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7352962/
https://www.ncbi.nlm.nih.gov/pubmed/32471076
http://dx.doi.org/10.3390/nano10061023
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author Gandhi, Ashish Chhaganlal
Cheng, Chia-Liang
Wu, Sheng Yun
author_facet Gandhi, Ashish Chhaganlal
Cheng, Chia-Liang
Wu, Sheng Yun
author_sort Gandhi, Ashish Chhaganlal
collection PubMed
description We report the synthesis of room temperature (RT) stabilized γ–Bi(2)O(3) nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi(2)O(3) NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectroscopy. γ–Bi(2)O(3) NPs exhibited a strong red-band emission peaking at ~701 nm, covering 81% integrated intensity of photoluminescence spectra. Our findings suggest that the RT stabilization and enhanced red-band emission of γ‒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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spelling pubmed-73529622020-07-15 Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies Gandhi, Ashish Chhaganlal Cheng, Chia-Liang Wu, Sheng Yun Nanomaterials (Basel) Article We report the synthesis of room temperature (RT) stabilized γ–Bi(2)O(3) nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi(2)O(3) NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectroscopy. γ–Bi(2)O(3) NPs exhibited a strong red-band emission peaking at ~701 nm, covering 81% integrated intensity of photoluminescence spectra. Our findings suggest that the RT stabilization and enhanced red-band emission of γ‒Bi(2)O(3) is mediated by excess oxygen ion vacancies generated at the octahedral O(2) sites during the annealing process. MDPI 2020-05-27 /pmc/articles/PMC7352962/ /pubmed/32471076 http://dx.doi.org/10.3390/nano10061023 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gandhi, Ashish Chhaganlal
Cheng, Chia-Liang
Wu, Sheng Yun
Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title_full Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title_fullStr Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title_full_unstemmed Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title_short Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies
title_sort structural and enhanced optical properties of stabilized γ‒bi(2)o(3) nanoparticles: effect of oxygen ion vacancies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7352962/
https://www.ncbi.nlm.nih.gov/pubmed/32471076
http://dx.doi.org/10.3390/nano10061023
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AT chengchialiang structuralandenhancedopticalpropertiesofstabilizedgbi2o3nanoparticleseffectofoxygenionvacancies
AT wushengyun structuralandenhancedopticalpropertiesofstabilizedgbi2o3nanoparticleseffectofoxygenionvacancies

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