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Erschienen in:
01.01.2013
Controlled synthesis, formation mechanism and lumincence properties of novel 3-dimensional Gd2(MoO4)3:Eu3+ nanostructures
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 1/2013
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Abstract
Orthorhombic Gd2(MoO4)3:Eu3+ nanosized particles with complex 3D self-assembled superstructures (dumbbell) were successfully synthesized by a hydrothermal method in ethyleneiamine tetra-acetic acid (EDTA) mediated processes. The pH value, reaction time, temperature, ando molybdenum source have crucial influence on the growth mechanism, shape evolution, and nanostructures. In the hydrothermal process, EDTA not only acts as a chelating reagent to facilitate the formation of Gd2(MoO4)3:Eu3+, but also acts as a surface capping agent to adhere to the newly created surface and to promote the crystal splitting. Comprehensive structural, morphological studies like X-ray diffraction, scanning and transmission electron microscopy were employed to characterize the as synthesized nanostructures. Photoluminescence studies on Gd2(MoO4)3:Eu3+ showed strong red emission upon UV illumination, and this implied potential application in the field of luminescent nano ceramics.