Effect of soaking time on the photoluminescence properties of cerium oxide nanoparticles

被引：36
作者：
Deus, R. C. [1 ]
Foschini, C. R. [3 ]
Spitova, B. [4 ]
Moura, F. [2 ]
Longo, E. [3 ]
Simoes, A. Z. [1 ,2 ]
机构：
[1] Univ Estadual Paulista, UNESP, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
[2] Univ Fed Itajuba Unifei, BR-3590037 Itabira, MG, Brazil
[3] Univ Estadual Paulista, Inst Quim, Lab Interdisciplinar Ceram, BR-14801907 Araraquara, SP, Brazil
[4] VSB Tech Univ Ostrava, Fac Met & Mat Engn, Ostrava 70833, Czech Republic
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Ceramics; Chemical syntheses; Powder metallurgy; X-ray diffraction; MICROWAVE-ASSISTED SYNTHESIS; PRASEODYMIUM-DOPED CERIA; HYDROTHERMAL SYNTHESIS; PT/CEO2; CATALYST; X-RAY; CEO2; ELECTROLYTE; PARTICLES; POWDERS; GROWTH;
D O I：
10.1016/j.ceramint.2013.06.043
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural and photoluminescence properties at room temperature of CeO2 nanoparticles synthesized by a microwave-assisted hydrothermal method (MAH) under different soaking times on KOH mineralizer added to a cerium ammonium nitrate aqueous solution were undertaken. X-ray. diffraction (XRD), Fourier transform infrared (FT-IR), Fourier transform Raman (PT-Raman) and photoluminescence (PL) measurements were employed. XRD revealed that the nanoparticles are free of secondary phases and crystallize in the cubic structure. The UV/vis absorption spectroscopy suggested the presence of intermediate energy levels in the band gap of structurally ordered powders. The most intense PL emission was obtained for nanoparticles which represent a lower particle size. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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页码：1 / 9
页数：9
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