Growth of barium oxalate crystals in agar–agar gel and their characterization

Abstract

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.

Growth and Characterization of Agar Gel Grown Brushite Crystals

“…The absorption peaks at 3541.42 cm −1 [33,34] and 3151.79 cm −1 [9] are attributed to O-H stretching. The peak at 1649.…”

Thermoelectric Power Measurement of Gel Grown Strontium Oxalate Crystals

“…Simple, inexpensive and suitable gel method [18][19][20] was used to grow strontium oxalate crystals at ambient temperature [21]. These gel grown strontium oxalate crystals were then used for the thermoelectric power studies.…”

Growth of strontium oxalate crystals in agar–agar gel

“…The growth of strontium oxalate crystals was carried out in agar-agar gel by adopting the similar techniques as reported (Dalal and Saraf 2009). Two vessels, one U-tube of length 25 cm and diameter 2·5 cm, and other a single glass tube of length 20 cm and diameter 2·5 cm were used.…”