Magnetically Recovered Co and Co@Pt Catalysts Prepared by Galvanic Replacement on Aluminum Powder for Hydrolysis of Sodium Borohydride.

ABSTRACT: Magnetically recovered Co and Co@Pt catalysts for H₂ generation during NaBH₄ hydrolysis were successfully synthesized by optimizing the conditions of galvanic replacement method. Commercial aluminum particles with an average size of 80 µm were used as a template for the synthesis of hollow shells of metallic cobalt. Prepared Co⁰ was also subjected to galvanic replacement reaction to deposit a Pt layer. X-ray diffraction analysis, X-ray photoelectron spectroscopy, scanning electron microscopy, and elemental analysis were used to investigate catalysts at each stage of their synthesis and after catalytic tests. It was established that Co⁰ hollow microshells show a high hydrogen-generation rate of 1560 mL·min^-1·g_cat^-1

SUBMITTER: Ozerova AM 

PROVIDER: S-EPMC9103126 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature