Characterization of MMoO4 (M = Ba, Sr and Ca) with different morphologies prepared using a cyclic microwave radiation |
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| Authors: | Titipun Thongtem Anukorn Phuruangrat |
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| Affiliation: | a Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
b Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand |
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| Abstract: | Scheelite molybdates (MMoO4, M = Ba, Sr and Ca) were successfully prepared by the reactions of M(NO3)2·2H2O and Na2MoO4·2H2O in propylene glycol and NaOH using a microwave radiation. The phases were detected using XRD and SAED. TEM analysis revealed the presence of micro-sized bi-pyramids with a square base, nano-sized particles in clusters, and dispersed nano-sized particles for BaMoO4, SrMoO4 and CaMoO4, respectively. Diffraction patterns of the bi-pyramids were simulated, and are in accord with the experimental results. Raman and FTIR spectra provide the evidence of scheelite structure with Mo-O stretching vibration in MoO42− tetrahedrons at 742-901 cm− 1. |
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| Keywords: | Cyclic microwave radiation Bi-pyramidal BaMoO4 Nano-sized SrMoO4 Nano-sized CaMoO4 |
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