Magnetically Isolable Pt0/Co3O4Nanocatalysts: Outstanding Catalytic Activity and High Reusability in Hydrolytic Dehydrogenation of Ammonia Borane


Akbayrak S., ÖZKAR S.

ACS Applied Materials and Interfaces, vol.13, no.29, pp.34341-34348, 2021 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 29
  • Publication Date: 2021
  • Doi Number: 10.1021/acsami.1c08362
  • Title of Journal : ACS Applied Materials and Interfaces
  • Page Numbers: pp.34341-34348
  • Keywords: platinum nanoparticles, cobalt(II,III) oxide, ammonia borane, catalysis, hydrogen release, COATED COBALT FERRITE, HYDROGEN-STORAGE MATERIALS, METAL-ORGANIC FRAMEWORK, REUSABLE CATALYST, CONTINUOUS NUCLEATION, NANOPARTICLES, GENERATION, MECHANISM, CO3O4, NANOCOMPOSITE

Abstract

© The development of a new platinum nanocatalyst to maximize the catalytic efficiency of the precious noble metal catalyst in releasing hydrogen from ammonia borane (AB) is reported. Platinum(0) nanoparticles are impregnated on a reducible cobalt(II,III) oxide surface, forming magnetically isolable Pt0/Co3O4 nanocatalysts, which have (i) superb catalytic activity providing a record turnover frequency (TOF) of 4366 min-1 for hydrogen evolution from the hydrolysis of AB at room temperature and (ii) excellent reusability, retaining the complete catalytic activity even after the 10th run of hydrolysis reaction. The outstanding activity and stability of the catalyst can be ascribed to the strong interaction between the platinum(0) nanoparticles and reducible cobalt oxide, which is supported by the results of XPS analysis. Pt0/Co3O4 exhibits the highest TOF among the reported platinum-nanocatalysts developed for hydrogen generation from the hydrolysis of AB.