Phase-evolution in Co-Sb System: CoSb3 Hydrothermal Synthesis

Abstract

Nanostructure CoSb3 samples were synthesized via hydrothermal technique along with different routes to study the phaseevolution in Co-Sb system. X-ray diffraction (XRD) explored to study the phase evolution in Co-Sb system via. Special emphasis on rietveld refinement and scanning electron microscope (SEM) were evaluated to study morphology of the samples. The samples prepared using ramp-route showed presence of different phases that eventually helps in formation of pure phase CoSb3 skuterrudite. Using different solvents to eliminate NaCl impurity also shows that DI-water eliminates NaCl impurity better because of its high solubility.