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.

引用

页码：1 / 9

页数：9

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