Abstract
CuS hollow nanospheres have been successfully synthesized in high yield by reacting anhydrous cupricsulfate (CuSO4·5H2O) with thioacetamide (TAA) in ethylene glycol (EG) with the assistance ofcetyltrimethylammonium bromide (CTAB). The products were characterized systematicallyby XRD, EDX, FESEM, TEM and BET measurement and size analysis, CV, LSV and CP.FESEM and TEM images revealed that the as-prepared CuS hollow nanospheres had amean diameter of about 500 nm with a hollow cavity of about 340 nm and shellthickness of about 80 nm. The spheres were constructed by numerous nanoflakes. TheBrunauer–Emmett–Teller (BET) surface area of the as-synthesized products was measured to be99.77 m2g − 1. The Barrett–Joyner–Halenda (BJH) model analysis showed that the as-prepared CuSmaterials had a main pore size distribution of around 25 nm. CV curves, LSV of CuS foroxygen electroreduction and CP curves showed that the as-prepared CuS nanospheres werepotential candidates which can be used as cathode catalysts for the oxygen reductionreaction (ORR) in alkaline media.
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