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Growth of barium oxalate crystals in agar–agar gel and their characterization
Author(s) -
Dalal P. V.,
Saraf K. B.,
Shah S.
Publication year - 2009
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200800221
Subject(s) - platy , thermogravimetric analysis , monoclinic crystal system , barium , oxalate , differential thermal analysis , agar , fourier transform infrared spectroscopy , materials science , thermal decomposition , crystallography , analytical chemistry (journal) , chemistry , nuclear chemistry , inorganic chemistry , crystal structure , diffraction , chromatography , chemical engineering , organic chemistry , optics , geology , paleontology , physics , engineering , bacteria , composite material
Single crystals of barium oxalate have been grown by gel method using agar‐agar gel as media of growth at ambient temperature. The optimum conditions were established by varying various parameters such as concentration of gel, concentration of reactant, gel setting time etc. Prismatic platy shaped transparent crystals were obtained. The grown crystals were characterized through powder X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR) studies, Thermogravimetric (TGA) and Differential thermal analysis (DTA). The compound crystallizes under monoclinic structure with lattice parameters a = 6.6562 Å, b = 8.0464 Å, c = 2.8090 Å, β= 96.832°, and V = 149.38 Å 3 . The FT‐IR spectrum indicates OH and carbonyl group along with the presence of metal‐oxygen bond. The TGA indicates 17.75% weight loss at 550°C from which the decomposition pattern is formulated. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)