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Electrochemical Synthesis and Characterization of Barium Tungstate Crystallites
Author(s) -
Song Zuwei,
Ma Junfeng,
Li Xuyun,
Sun Yong,
Fang Jingrui,
Liu Zhengsen,
Gao Chang
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03042.x
Subject(s) - crystallite , tungstate , scheelite , materials science , scanning electron microscope , tetragonal crystal system , barium , tungsten , analytical chemistry (journal) , crystallization , crystallography , crystal structure , chemical engineering , chemistry , metallurgy , composite material , engineering , chromatography
Barium tungstate (BaWO 4 ) crystallites were successfully synthesized at room temperature via an easily‐manipulated electrochemical method, using tungsten plates as electrodes and Ba(OH) 2 solution as electrolyte. Effects of electric current value and reaction time on the crystallization and development of BaWO 4 crystallites were initially studied and characterized by X‐ray diffraction (XRD), scanning electron microscopy, and photoluminescent (PL) spectra technique, respectively. Experimental results showed that well‐crystallized BaWO 4 crystallites with ca. 2 μm in diameter could be obtained at 0.5 A and a short reaction time of 10 min. XRD analysis showed that the as‐prepared sample was a pure tetragonal phase of BaWO 4 with scheelite structure. PL spectra revealed that BaWO 4 crystallites displayed a very strong PL peak at 448 nm with the 380 nm excitation wavelength.