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Porous ZnAl2O4 spinel nanorods doped with Eu3+: synthesis and photoluminescence

Authors
  • cheng, bc
  • sc, qu
  • zhou, hy
  • wang, zg
Publication Date
Jan 01, 2006
Source
Knowledge Repository of SEMI,CAS
Keywords
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Abstract

Eu3+-doped zinc aluminate (ZnAl2O4) nanorods with a spinel structure were successfully synthesized via an annealing transformation of layered precursors obtained by a homogeneous coprecipitation method combined with surfactant assembly. These spinel nanorods, which consist of much finer nanofibres together with large quantities of irregular mesopores and which possess a large surface area of 93.2 m(2) g(-1) and a relatively narrow pore size distribution in the range of 6 - 20 nm, are an ideal optical host for Eu3+ luminescent centres. In this nanostructure, rather disordered surroundings induce the typical electric-dipole emission (D-5(0) --> F-7(2)) of Eu3+ to predominate and broaden.

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