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Issue 37, 2010
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Self-templated and self-assembled synthesis of nano/microstructures of Gd-based rare-earth compounds: morphology control, magnetic and luminescence properties

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Abstract

Nearly monodisperse NaGdF4 and GdF3 nanowires/nanorods as well as GdBO3 microplates/microflowers have been successfully prepared by a designed chemical conversion approach using Gd(OH)3 nanowires/nanorods as precursors via a facile hydrothermal approach. The Gd(OH)3 nanowires/nanorods precursors were prepared through a simple hydrothermal process, which then served as sacrificial templates for the fabrication of NaGdF4 and GdF3 nanowires/nanorods as well as GdBO3 microplates/microflowers by a hydrothermal process. The possible formation mechanisms for the corresponding Gd3+-based various products are presented in detail. We have investigated the magnetic properties of the NaGdF4, GdF3, and GdBO3 samples. The as-obtained Eu3+ doped NaGdF4, GdF3, and GdBO3 samples show the strong characteristic red emission of Eu3+ under ultraviolet excitation. Moreover, the luminescence colors of the Eu3+ and Tb3+ co-doped GdBO3 samples can be tuned from red, through orange, yellow and green-yellow, to green by simply adjusting the relative doping concentrations of the activator ions under a single wavelength excitation, which might find potential applications in the fields such as light display systems and optoelectronic devices. More importantly, this simple method is expected to allow the large-scale production of other complex rare-earth compounds with controllable morphologies and sizes, and exploration of the morphology and phase-dependent photoluminescence properties.

Graphical abstract: Self-templated and self-assembled synthesis of nano/microstructures of Gd-based rare-earth compounds: morphology control, magnetic and luminescence properties

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Publication details

The article was received on 09 Apr 2010, accepted on 09 Jun 2010 and first published on 02 Aug 2010


Article type: Paper
DOI: 10.1039/C0CP00169D
Citation: Phys. Chem. Chem. Phys., 2010,12, 11315-11324
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    Self-templated and self-assembled synthesis of nano/microstructures of Gd-based rare-earth compounds: morphology control, magnetic and luminescence properties

    Z. Xu, C. Li, D. Yang, W. Wang, X. Kang, M. Shang and J. Lin, Phys. Chem. Chem. Phys., 2010, 12, 11315
    DOI: 10.1039/C0CP00169D

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