Raman Spectroscopy Of Nickel Molybdate And Its Modifications
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES(2021)
Abstract
While using hydrothermal method we obtained nanocrystal nickel molybdate hydrate (NiMoO4). Its further calcination at 400 degrees C enabled us to obtain alpha-phase of NiMoO4 hydrate. The modification of physical and chemical properties of prepared NiMoO4 hydrate was being done with the aid of powerful laser radiation with the further composite formation on its basis. We have established the interconnection of vibrational modes of triclinic and monoclinic structures of nickel molybdates with corresponding bands in Raman spectra. We established that registered intensive bands with maximum 947, 870, 828, and 354 cm(-1) correspond to vibrational modes of \MoO4 tetrahedrons of NiMoO4 hydrates, while intensive bands with maximum 960, 912, and 706 cm(-1) in alpha-NiMoO4 correspond to stretching vibrational modes in \Mo-O and O-\Mo-O, bending modes O-\Mo-O connections in MoO6 octahedron.
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Key words
Raman spectroscopy, nanomaterials, nickel molybdate, carbon material, laser irradiation
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