Synthesis and luminescent properties of new tungstates Ln2Zr(WO4)5 (Ln = Tb, Dy)

• Published in: Chimica Techno Acta Vol. 9; no. 2
• Main Authors: B. G. Bazarov, S. G. Dorzhieva, R. Y. Shendrik, Y. L. Tushinova, Ts. T. Bazarova, D. O. Sofich, O. D. Chimitova, J. G. Bazarova
• Format: Journal Article
• Language: English
• Published: Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina 01-05-2022
• Subjects: framework structure; lanthanides; luminescence; sol-gel technology; solid-phase synthesis; tungstates
• ISSN: 2411-1414
• DOI: 10.15826/chimtech.2022.9.2.05

New polycrystalline powder samples of double Ln2Zr(WO4)5 (Ln = Dy, Tb) tungstates were synthesized using high-temperature solid-phase and sol-gel methods. The conditions of the sol-gel synthesis of tungstates were optimized. The obtained phases were characterized by the X-ray powder diffraction on the basis of the crystallographic data of similar Ln–Zr molybdates. It is found that Ln2Zr(WO4)5 (Ln = Dy, Tb) double tungstates crystallize in the orthorhombic crystal system, space group Cmc21 (Z = 4). The intensive luminescence in the green spectral region for Tb2Zr(WO4)5 and yellow spectral region for Dy2Zr(WO4)5 was shown.