Multifunctional luminescent nanofibres from Eu3+-doped La2O2SO4 with enhanced oxygen storage capability

Mei Yang, Haiyan Shi, Liwei Ma, Qingyuan Gui, Jinlei Ma, Mimi Lin, Anwar Sunna, Wenjing Zhang, Liming Dai, Jia Qu, Yong Liu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The controlled synthesis of La2O2SO4:Eu3+ nanofibres (NF) for luminescent applications is presented here for the first time. Three dimensional nanofibrous structures with average diameter of 90 nm were prepared successfully. Eu3+ ions were further doped to study the luminescent property and phase structure. A strong red luminescence was obtained at the as-prepared NF. High asymmetry ratio (R) in the emission spectrum indicated that the Eu3+ ions were located in a distorted cation environment and the luminescent NF obtained possessed a good colour purity. The emission intensity of the resulting NF varied with different Eu3+ contents with the best emission brightness obtained at 20% Eu3+ doping. An 18% improved luminescence decay time at a relative lower annealing temperature (650 °C) was obtained for the nanofibrous structure when compared to the corresponding bulk materials (BM). The quantum efficiency (QE) of the as-synthesised NF was found to be 6.3%, which was 17% enhanced from the QE of BM (5.4%). Oxidation activity of NF compared to BM was measured using Temperature-Programmed Reduction (TPR). The TPR peak temperature for the consumption of hydrogen was decreased 12% with the employment of NF, suggesting well improved oxygen storage capability of the resulting NF. Our results indicate the multifunctional applications of the resulting NF in different fields such as optics and oxygen storage.

LanguageEnglish
Pages202-207
Number of pages6
JournalJournal of Alloys and Compounds
Volume695
DOIs
Publication statusPublished - 25 Feb 2017

Fingerprint

Nanofibers
Oxygen
Quantum efficiency
Luminescence
Ions
Temperature
Phase structure
Cations
Hydrogen
Luminance
Optics
Positive ions
Doping (additives)
Annealing
Color
Oxidation

Keywords

  • Lanthanide oxysulfates
  • Luminescence properties
  • Nanofibres
  • Oxygen storage

Cite this

Yang, Mei ; Shi, Haiyan ; Ma, Liwei ; Gui, Qingyuan ; Ma, Jinlei ; Lin, Mimi ; Sunna, Anwar ; Zhang, Wenjing ; Dai, Liming ; Qu, Jia ; Liu, Yong. / Multifunctional luminescent nanofibres from Eu3+-doped La2O2SO4 with enhanced oxygen storage capability. In: Journal of Alloys and Compounds. 2017 ; Vol. 695. pp. 202-207.
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abstract = "The controlled synthesis of La2O2SO4:Eu3+ nanofibres (NF) for luminescent applications is presented here for the first time. Three dimensional nanofibrous structures with average diameter of 90 nm were prepared successfully. Eu3+ ions were further doped to study the luminescent property and phase structure. A strong red luminescence was obtained at the as-prepared NF. High asymmetry ratio (R) in the emission spectrum indicated that the Eu3+ ions were located in a distorted cation environment and the luminescent NF obtained possessed a good colour purity. The emission intensity of the resulting NF varied with different Eu3+ contents with the best emission brightness obtained at 20{\%} Eu3+ doping. An 18{\%} improved luminescence decay time at a relative lower annealing temperature (650 °C) was obtained for the nanofibrous structure when compared to the corresponding bulk materials (BM). The quantum efficiency (QE) of the as-synthesised NF was found to be 6.3{\%}, which was 17{\%} enhanced from the QE of BM (5.4{\%}). Oxidation activity of NF compared to BM was measured using Temperature-Programmed Reduction (TPR). The TPR peak temperature for the consumption of hydrogen was decreased 12{\%} with the employment of NF, suggesting well improved oxygen storage capability of the resulting NF. Our results indicate the multifunctional applications of the resulting NF in different fields such as optics and oxygen storage.",
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Multifunctional luminescent nanofibres from Eu3+-doped La2O2SO4 with enhanced oxygen storage capability. / Yang, Mei; Shi, Haiyan; Ma, Liwei; Gui, Qingyuan; Ma, Jinlei; Lin, Mimi; Sunna, Anwar; Zhang, Wenjing; Dai, Liming; Qu, Jia; Liu, Yong.

In: Journal of Alloys and Compounds, Vol. 695, 25.02.2017, p. 202-207.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Multifunctional luminescent nanofibres from Eu3+-doped La2O2SO4 with enhanced oxygen storage capability

AU - Yang, Mei

AU - Shi, Haiyan

AU - Ma, Liwei

AU - Gui, Qingyuan

AU - Ma, Jinlei

AU - Lin, Mimi

AU - Sunna, Anwar

AU - Zhang, Wenjing

AU - Dai, Liming

AU - Qu, Jia

AU - Liu, Yong

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Y1 - 2017/2/25

N2 - The controlled synthesis of La2O2SO4:Eu3+ nanofibres (NF) for luminescent applications is presented here for the first time. Three dimensional nanofibrous structures with average diameter of 90 nm were prepared successfully. Eu3+ ions were further doped to study the luminescent property and phase structure. A strong red luminescence was obtained at the as-prepared NF. High asymmetry ratio (R) in the emission spectrum indicated that the Eu3+ ions were located in a distorted cation environment and the luminescent NF obtained possessed a good colour purity. The emission intensity of the resulting NF varied with different Eu3+ contents with the best emission brightness obtained at 20% Eu3+ doping. An 18% improved luminescence decay time at a relative lower annealing temperature (650 °C) was obtained for the nanofibrous structure when compared to the corresponding bulk materials (BM). The quantum efficiency (QE) of the as-synthesised NF was found to be 6.3%, which was 17% enhanced from the QE of BM (5.4%). Oxidation activity of NF compared to BM was measured using Temperature-Programmed Reduction (TPR). The TPR peak temperature for the consumption of hydrogen was decreased 12% with the employment of NF, suggesting well improved oxygen storage capability of the resulting NF. Our results indicate the multifunctional applications of the resulting NF in different fields such as optics and oxygen storage.

AB - The controlled synthesis of La2O2SO4:Eu3+ nanofibres (NF) for luminescent applications is presented here for the first time. Three dimensional nanofibrous structures with average diameter of 90 nm were prepared successfully. Eu3+ ions were further doped to study the luminescent property and phase structure. A strong red luminescence was obtained at the as-prepared NF. High asymmetry ratio (R) in the emission spectrum indicated that the Eu3+ ions were located in a distorted cation environment and the luminescent NF obtained possessed a good colour purity. The emission intensity of the resulting NF varied with different Eu3+ contents with the best emission brightness obtained at 20% Eu3+ doping. An 18% improved luminescence decay time at a relative lower annealing temperature (650 °C) was obtained for the nanofibrous structure when compared to the corresponding bulk materials (BM). The quantum efficiency (QE) of the as-synthesised NF was found to be 6.3%, which was 17% enhanced from the QE of BM (5.4%). Oxidation activity of NF compared to BM was measured using Temperature-Programmed Reduction (TPR). The TPR peak temperature for the consumption of hydrogen was decreased 12% with the employment of NF, suggesting well improved oxygen storage capability of the resulting NF. Our results indicate the multifunctional applications of the resulting NF in different fields such as optics and oxygen storage.

KW - Lanthanide oxysulfates

KW - Luminescence properties

KW - Nanofibres

KW - Oxygen storage

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JO - Journal of Alloys and Compounds

T2 - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -