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

TL;DR

This study investigates the phase evolution of CoSb3 nanostructures synthesized via hydrothermal methods, emphasizing synthesis routes, phase purity, and morphology, with implications for optimizing material quality.

Contribution

It introduces a hydrothermal synthesis approach with different routes and solvent choices, highlighting how these affect phase purity and morphology of CoSb3.

Findings

Ramp-route synthesis yields pure CoSb3 phase.

DI-water effectively removes NaCl impurities.

Morphology varies with synthesis route.

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.