Next Article in Journal
Load-Deflection and Friction Properties of PEEK Wires as Alternative Orthodontic Wires
Previous Article in Journal
Modeling Adhesive Anchors in a Discrete Element Framework
Open AccessArticle

A Unique 3D Nitrogen-Doped Carbon Composite as High-Performance Oxygen Reduction Catalyst

1
School of Chemical Engineering, University of Adelaide, SA 5005, Australia
2
School of Chemistry, University of Adelaide, SA 5005, Australia
3
School of Chemical and Physical Sciences, Flinders University, SA 5005, Australia
*
Authors to whom correspondence should be addressed.
Materials 2017, 10(8), 921; https://doi.org/10.3390/ma10080921
Received: 8 July 2017 / Revised: 1 August 2017 / Accepted: 4 August 2017 / Published: 9 August 2017
(This article belongs to the Section Advanced Composites)
The synthesis and properties of an oxygen reduction catalyst based on a unique 3-dimensional (3D) nitrogen doped (N-doped) carbon composite are described. The composite material is synthesised via a two-step hydrothermal and pyrolysis method using bio-source low-cost materials of galactose and melamine. Firstly, the use of iron salts and galactose to hydrothermally produceiron oxide (Fe2O3) magnetic nanoparticle clusters embedded carbon spheres. Secondly, magnetic nanoparticles diffused out of the carbon sphere when pyrolysed in the presence of melamine as nitrogen precursor. Interestingly, many of these nanoparticles, as catalyst-grown carbon nanotubes (CNTs), resulted in the formation of N-doped CNTs and N-doped carbon spheres under the decomposition of carbon and a nitrogen environment. The composite material consists of integrated N-doped carbon microspheres and CNTs show high ORR activity through a predominantly four-electron pathway. View Full-Text
Keywords: N-doped carbon spheres; N-doped carbon nanotubes; ORR; hybrid; catalysts N-doped carbon spheres; N-doped carbon nanotubes; ORR; hybrid; catalysts
Show Figures

Graphical abstract

MDPI and ACS Style

Karunagaran, R.; Tung, T.T.; Shearer, C.; Tran, D.; Coghlan, C.; Doonan, C.; Losic, D. A Unique 3D Nitrogen-Doped Carbon Composite as High-Performance Oxygen Reduction Catalyst. Materials 2017, 10, 921.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop