Issue 2, 2012
From the journal:

CrystEngComm

Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

Cristiane W. Raubach,*a   Matheus Z. Krolow,b   Marcia F. Mesko,b   Sergio Cava,c   Mario L. Moreira,d   Elson Longod  and  Neftalí L. V. Carreño.c  

* Corresponding authors

a LIEC, Department of Chemistry, Federal University of São Carlos, C. Postal 676, Rod. Washington Luis, Km 235, São Carlos, SP, Brazil
E-mail: cristiane@liec.ufscar.br

b Institute of Chemistry and Geosciences, Federal University of Pelotas, Pelotas, RS, Brazil

c Technology Development Center Federal University of Pelotas, Pelotas, RS, Brazil

d INCTMN, Institute of Chemistry, Unesp, Araraquara, SP, Brazil

Abstract

This research investigated the synthesis of the Al2O3/ZrO2 core-shell system using a polymeric precursor method. The interfacial features emission show the possibility for control of the luminescence behaviour. X-ray diffraction (XRD) patterns are well defined for α-Al2O3 and for γ-Al2O3, core structures and a zirconia shell phase for high concentrations. Photoluminescence (PL) spectra (λexc = 350.7 nm) reveal that the effect of the zirconia coating on the alumina was more effective for α-Al2O3 than for γ-Al2O3 which may be related to the zirconia coating process on alumina. The image transmission electron microscopy (TEM) shows an amorphous region of 10 nm which is attributed to a ZrO2 shell layer.

Graphical abstract: Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

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Article information

DOI
https://doi.org/10.1039/C1CE06099F
Article type
Communication
Submitted
25 Aug 2011
Accepted
07 Nov 2011
First published
28 Nov 2011

CrystEngComm, 2012,14, 393-396

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Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

C. W. Raubach, M. Z. Krolow, M. F. Mesko, S. Cava, M. L. Moreira, E. Longo and N. L. V. Carreño., CrystEngComm, 2012, 14, 393 DOI: 10.1039/C1CE06099F

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