Effect of Sodium Acetate Trihydrate Addition on Structural, Optical, Dielectric and NLO Properties of Thiourea Single Crystal

Abstract

Optically fine quality single crystals of pure thiourea (abbreviated as TU) CH 4 N 2 S and sodium acetatetrihydrate doped thiourea (abbreviated as STATH) NaC 3 H 13 N 2 SO 5 were effectively grown by slow evaporation method at room temperature from their aqueous solutions. The procured crystals were of average size 18×12×5 mm 3 (TU) and 17×8×5 mm 3 (STATH). Single and Powder X-ray Diffraction studies were consummated and the lattice specifications of the grown crystals have been assessed. Optical constants were appraised for both the samples by manipulating UV-Vis-NIR spectroscopy. Chemical composition of TU and STATH was scrutinized by EDX analysis. The dielectric response of both the samples was investigated in the frequency zone 100 Hz to 5 MHz besides solid state parameters were deliberated. The second harmonic generation (SHG) efficiency test manifests that STATH has the efficiency 1.506 times that of potassium dihydrogen phosphate (KDP).

Use of cellulose nanofibril (CNF)/silver nanoparticles (AgNPs) composite in salt hydrate phase change material for efficient thermal energy storage

“…All the characteristic peaks of the components were observed in the spectra of PCM composites and no new peaks appeared upon the preparation of SAT-based PCM composites. and (211) planes, respectively [47]. CNF showed two broad peaks centred at 16.3° and 22.6°, corresponding to the (110) and (200) crystal planes (JCPDS No.…”