Jump to main content
Jump to site search

Issue 21, 2013
Previous Article Next Article

Monodisperse Ni3Fe single-crystalline nanospheres as a highly efficient catalyst for the complete conversion of hydrous hydrazine to hydrogen at room temperature

Author affiliations

Abstract

A facile, reliable, and robust synthetic method for the preparation of monodisperse Ni3Fe single-crystalline nanospheres with 182.3 m2 g−1 specific surface area is reported. The results of an investigation of the shape/size distribution, structural characteristics, and composition of these Ni3Fe nanospheres are presented, and a possible mechanism for the formation of the nanospheres at high temperatures in a cetylamine–palmitic acid solution in the presence of tri-iso-butyl thallium and borane trimethylamine complexes is proposed. During the decomposition of hydrazine, when supported on carbon (Ni3Fe/C), the monodisperse Ni3Fe nanospheres exerted 100% H2 selectivity, and showed exceedingly high activity at room temperature. The decomposition reaction is first-order in Ni3Fe concentration, but zero-order in N2H4 concentration; the activation energy was 48.1 ± 2.0 kJ mol−1. Furthermore, the Ni3Fe/C was a stable catalyst for N2H4 hydrolytic dehydrogenation; it provided 15 840 total turnovers in 30 h. An Ni3Fe nanosphere-based catalyst such as this that is efficient under mild reaction conditions represents a promising step toward the practical development of N2H4 as a feasible hydrogen storage medium for fuel cell applications.

Graphical abstract: Monodisperse Ni3Fe single-crystalline nanospheres as a highly efficient catalyst for the complete conversion of hydrous hydrazine to hydrogen at room temperature

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 21 Jan 2013, accepted on 25 Mar 2013 and first published on 26 Mar 2013


Article type: Paper
DOI: 10.1039/C3TA10321H
Citation: J. Mater. Chem. A, 2013,1, 6425-6432
  •   Request permissions

    Monodisperse Ni3Fe single-crystalline nanospheres as a highly efficient catalyst for the complete conversion of hydrous hydrazine to hydrogen at room temperature

    D. G. Tong, D. M. Tang, W. Chu, G. F. Gu and P. Wu, J. Mater. Chem. A, 2013, 1, 6425
    DOI: 10.1039/C3TA10321H

Search articles by author