AI Article Synopsis
- The study explores the creation of BaMoO4:Eu3+ micro-crystals, specifically microparticles and micro-rods, using a simple molten salt method involving NaCl-KCl.
- The synthesis process involves reacting a BaMoO4 precursor, produced from a co-precipitation method, with an eutectic salt at a high temperature of 700 degrees Celsius.
- Results indicate that the different micro-crystal shapes depend on the salt to precursor weight ratio, and the luminescent properties show that microparticles exhibit a stronger red emission than micro-rods at 615 nm due to the Eu3+ ions.
Article Abstract
This work focuses on the synthesis of morphology-controlled BaMoO4:Eu3+ micro-crystals such as microparticles and micro-rods using a facile molten salt method, and their morphology, structural characterization, and luminescent properties were comparatively investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and fluorescence spectra. The molten salt method synthesized products from a reaction of BaMoO4 precursor obtained by a co-precipitation method of BaCl2 and Na2MoO4 with an eutectic salt mixture of NaCl-KCl at 700 degrees C. Detailed studies revealed that the formation of the different morphologies of the micro-crystals was strongly dependent on the weight ratio of the salt (NaCl-KCl) to the BaMoO4 precursor, and the formation mechanism of the products in the present molten salt system was also investigated. Based on the investigations of the photoluminescence properties, the samples with different morphologies prepared by the molten salt method had the strongest red emission at 615 nm, corresponding to the Eu3+ 5D0-7F2 transition in the BaMoO4 host lattice, and the emission intensity of BaMoO4:Eu3+ microparticles was stronger than that of BaMoO4:Eu3+ micro-rods.
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| http://dx.doi.org/10.1166/jnn.2011.5298 | DOI Listing |
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