Hydrogen liberation from the dehydrocoupling of dimethylamine–borane at room temperature by using novel and highly monodispersed RuPtNi nanocatalysts decorated with graphene oxide

Sen B., Kuzu S., Demir E., Onal Okyay T., Sen F.

International Journal of Hydrogen Energy, vol.42, no.36, pp.23299-23306, 2017 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 36
  • Publication Date: 2017
  • Doi Number: 10.1016/j.ijhydene.2017.04.213
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.23299-23306
  • Keywords: Dehydrocoupling, Monodispersity, Outstanding performance, Tri metallic nanocatalyst
  • Uşak University Affiliated: No

Abstract

Addressed herein, we reported the fabrication of the graphene oxide (GO) supported monodispersed ruthenium–platinum–nickel (RuPtNi) nanomaterials (3.40 ± 0.32 nm) to be utilized as a catalyst in the process of dimethylamine borane (DMAB) dehydrogenation. The nanoparticles were fabricated through the ultrasonication method by co-reducing the Ru3+, Pt2+ and Ni2+ cations and then the nanomaterials were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS), inductively coupled plasma optical emission spectrometry (ICP-OES), and X-ray photoelectron spectroscopy (XPS). The fabricated nanomaterials showed outstanding efficiency and remarkable reusability in addition to their record catalytic activity at low temperatures and with extreme low concentrations. They had a significantly high turnover frequency (TOF) (727 h−1) and low activation energy (Ea) (49.43 ± 2 kJ mol−1) for DMAB dehydrocoupling. To the best of our knowledge, RuPtNi@GO NPs become a very promising candidate as the best catalyst ever.