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Hydrogen liberation from the dehydrocoupling of dimethylamine–borane at room temperature by using novel and highly monodispersed RuPtNi nanocatalysts decorated with graphene oxide
Ist Teil von
International journal of hydrogen energy, 2017-09, Vol.42 (36), p.23299-23306
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2017
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
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.
•Highly monodisperse Ruthenium–Platinum–Nickel Alloy Nanoparticles decorated by reduced graphene oxide (RuPtNi@GO).•The discovery of a remarkable DMAB dehydrocoupling catalyst.•The record TOF value of RuPtNi@GO for dimethylamine–borane dehydrogenation.•Thanks to the ultrasmall sizes, monodispersity and high metallic ratio of Ru, Pt and Ni.