Fig. 5: Surface morphological analysis.

FESEM micrographs of a, b CSHK–Ni nanocomposite; elemental mapping of c Carbon, d Nickel, e Oxygen, f Copper, g Sulfur, h overall CSHK–Ni nanocomposite.

FESEM micrographs of a, b CSHK–Ni nanocomposite; elemental mapping of c Carbon, d Nickel, e Oxygen, f Copper, g Sulfur, h overall CSHK–Ni nanocomposite.