Nucleation Kinetics, Growth and Characterization Studies of a Diamagnetic Crystal‐Zinc Sulphate Heptahydrate (ZSHH)

Abstract

Solubility, metastable zone width and induction period measurements have been performed on zinc sulphate heptahydrate (ZSHH). Interfacial tension values determined from induction period measurements have been used for the evaluation of the nucleation parameters such as radius of critical nucleus and the free energy of formation of critical nucleus. ZSHH crystallizes in the orthorhombic structure. Crystals of diamagnetic zinc sulphate heptahydrate have been grown by temperature lowering solution growth technique with the optimized growth parameters. The as-grown ZSHH crystals were characterized by the powder X-ray diffraction, UV-VIS absorption and transmittance, FT-IR absorption, TG-DTA, microhardness and etching studies.

Synthesis of 1-D ZnO nanorods and polypyrrole/1-D ZnO nanocomposites for photocatalysis and gas sensor applications

“…The precursor of ZnO synthesis shows the absorption spectra at 285.65 nm of zinc sulphate heptahydrate in the reported literature [42], after complete precipitation reaction with NaOH, it shows the absorption maxima at 361.5 nm of synthesized 1-D ZnO nanorods shown in figure 1. Similarly, crystal violet showed the absorption maxima at 584.1 nm.…”

Crystal Growth and Characterization of Potassium Manganese Nickel Sulphate Hexahydrate—A New UV Filter

“…The stretching vibrations of the water molecule are expected in 3000 -3600 cm -1 [8,11]. The broad vibration band observed at 3233 cm -1 , is attributed to symmetric stretching mode of water molecule.…”

X‐Ray and Thermal Studies on ZnxMg1-x SO4.7H2O Crystals

“…Crystals of maximum size were obtained in about 5-7 days. The maximum size of the grown crystals was 50 x 15 x 10 mm 3 .…”

“…In this aspect, ZSHH and MSHH play a key role as best dielectric materials. Growth of MSHH, ZSHH and NSHH crystals were reported in the literature [1][2][3] . However literature apparently shows that there is no systematic study have reported on the growth of mixed crystals of ZSHH and MSHH so far.…”

“…In the present study, we have attempted to grow pure and mixed MSHH and ZSHH crystals by slow evaporation method. The growth conditions were optimized and crystals of dimensions 50 x 15 x 10 mm 3 were obtained in the present study. The grown crystals were characterized by AAS, x-ray and thermal analysis.…”