Promoting effect of nitrogen doping on carbon nanotube-supported RuO2 applied in the electrocatalytic oxygen evolution reaction
Artikel i vetenskaplig tidskrift, 2016

RuO2 nanoparticles supported on multi-walled carbon nanotubes (CNTs) functionalized with oxygen (OCNTs) and nitrogen (NCNTs) were employed for the oxygen evolution reaction (OER) in 0.1 M KOH. The catalysts were synthesized by metal-organic chemical vapor deposition using ruthenium carbonyl (Ru3(CO)12) as Ru precursor. The obtained RuO2/OCNT and RuO2/NCNT composites were characterized using TEM, H2-TPR, XRD and XPS in order probe structure-activity correlations, particularly, the effect of the different surface functional groups on the electrochemical OER performance. The electrocatalytic activity and stability of the catalysts with mean RuO2 particle sizes of 13-14 nm was evaluated by linear sweep voltammetry, cyclic voltammetry, and chronopotentiometry, showing that the generation of nitrogen-containing functional groups on CNTs was beneficial for both OER activity and stability. In the presence of RuO2, carbon corrosion was found to be significantly less severe.

Chemical vapor deposition

Ruthenium dioxide

Oxygen evolution reaction

Nitrogen-doped carbon nanotubes

Författare

Kunpeng Xie

Kemi och kemiteknik, Kemiteknik, Kemisk reaktionsteknik

W. Xia

Ruhr-Universitat Bochum

J. Masa

Ruhr-Universitat Bochum

F. Yang

Ruhr-Universitat Bochum

P. Weide

Ruhr-Universitat Bochum

W. Schuhmann

Ruhr-Universitat Bochum

M. Muhler

Max Planck Institute fur Chemische Energiekonversion

Ruhr-Universitat Bochum

Journal of Energy Chemistry

2095-4956 (ISSN)

Vol. 25 282-288

Ämneskategorier

Kemiteknik

DOI

10.1016/j.jechem.2016.01.023