Preparation of Submicron- and Nanometer-Sized Particles of Y_2O_3:Eu^<3+> by Flame Spray Pyrolysis Using Ultrasonic and Two-Fluid Atomizers
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概要
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Submicron- and nanometer-sized red luminescent particles (Y2O3:Eu3+) were successfully generated by flame spray pyrolysis (FSP) and the effect of the type of the atomizer, i.e., the ultrasonic nebulizer (UN) and the two-fluid nozzle (TFN) sprayer, on the particle characteristics was investigated. The prepared particles were characterized by field emission-scanning electron microscopy (FE-SEM), an X-ray diffractometry (XRD) analysis and spectrophotometry. UN-FSP produced non aggregated particles with a mean diameter of 754 nm and the relative photoluminescence (PL) intensity (ratio of emission intensity of generated particles to that of commercial particles) varied from 0.36 to 1.01. The Y2O3:Eu3+ particles generated by TFN-FSP were softly agglomerated with a mean diameter of 24 nm and the relative PL intensity ranged from 0.21 to 0.24. Regardless of the type of the atomizer used, the generated particles were dense and spherical in the cubic phase and highly crystalline. These results show that TFN-FSP is a versatile method of producing Y2O3:Eu3+ nanometer-sized particles compared with UN-FSP.
- 社団法人 化学工学会の論文
- 2006-01-01
著者
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OKUYAMA KIKUO
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University
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LENGGORO I.
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University
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PURWANTO Agus
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University
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CHANG Hankwon
Nano-Materials Group, Korea Institute of Geoscience and Mineral Resources (KIGAM)
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CHANG Hankwon
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University
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Lenggoro I.wuled
Department Of Chemical Engineering Hiroshima University
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Lenggoro I.
広島大学大学院工学研究科
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Chang Hankwon
Nano-materials Group Korea Inst. Of Geoscience And Mineral Resources (kigam)
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Purwanto Agus
Department Of Chemical Engineering Graduate School Of Engineering Hiroshima University
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Okuyama Kikuo
Department Of Chemical Engineering Faculty Of Engineering Hiroshima University
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Purwanto Agus
Department Of Chemical Engineering Faculty Of Engineering Sebelas Maret University
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Okuyama K
Department Of Chemical Engineering Graduate School Of Engineering Hiroshima University
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Chang H
Nano-materials Group Korea Institute Of Geoscience And Mineral Resources (kigam)
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