Hydrogen generation from hydrolysis of ammonia borane in the presence of highly efficient poly(N-vinyl-2-pyrrolidone)-protected platinum-ruthenium nanoparticles

Rakap M.

APPLIED CATALYSIS A-GENERAL, vol.478, pp.15-20, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 478
  • Publication Date: 2014
  • Doi Number: 10.1016/j.apcata.2014.03.022
  • Journal Name: APPLIED CATALYSIS A-GENERAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.15-20
  • Keywords: Platinum, Ruthenium, Nanoparticles, Ammonia borane, Hydrogen, SODIUM-BOROHYDRIDE, CATALYTIC HYDROLYSIS, PALLADIUM(0) NANOCLUSTERS, STABILIZED RUTHENIUM(0), SYNERGISTIC CATALYSIS, REUSABLE CATALYST, AQUEOUS-SOLUTION, DEHYDROGENATION, WATER, GRAPHENE
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

Herein, the employment of PVP-protected Pt-Ru bimetallic nanoparticles (3.2 +/- 1.4 nm) as highly efficient catalysts in the hydrolysis of ammonia borane for hydrogen generation is reported. They were prepared by co-reduction of two metal ions in ethanol/water mixture by an alcohol reduction method and characterized by TEM-EDX analysis, UV-vis spectroscopy, and X-ray photoelectron spectroscopy. They are recyclable and highly active for hydrogen generation from the hydrolysis of ammonia borane even at very low concentrations and temperature, providing a record numbers of average TOP value (308 mol H-2 MOl(cat)(-1) min(-1)) and maximum hydrogen generation rate (9884 L H-2 min(-1) (mol(cat))(-1)) for ammonia borane. PVP-protected Pt-Ru bimetallic nanoparticles provide activation energy of 56.3 +/- 2 kJ mol(-1) for the hydrolysis of ammonia borane. (C) 2014 Elsevier B.V. All rights reserved.