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- Title
'Metal-Free' Catalytic Oxygen Reduction Reaction on Heteroatom-Doped Graphene is Caused by Trace Metal Impurities.
- Authors
Wang, Lu; Ambrosi, Adriano; Pumera, Martin
- Abstract
The oxygen reduction reaction (ORR) is of high industrial importance. There is a large body of literature showing that metal-based catalytic nanoparticles (e.g. Co, Mn, Fe or hybrid Mn/Co-based nanoparticles) supported on graphene act as efficient catalysts for the ORR. A significant research effort is also directed to the so-called 'metal-free' oxygen reduction reaction on heteroatom-doped graphene surfaces. While such studies of the ORR on nonmetallic heteroatom-doped graphene are advertised as 'metal-free' there is typically no sufficient effort to characterize the doped materials to verify that they are indeed free of any trace metal. Here we argue that the claimed 'metal-free' electrocatalysis of the oxygen reduction reaction on heteroatom-doped graphene is caused by metallic impurities present within the graphene materials.
- Subjects
CATALYTIC doping; METAL catalysts; GRAPHENE; METAL inclusions; METAL nanoparticles; OXYGEN reduction
- Publication
Angewandte Chemie, 2013, Vol 125, Issue 51, p14063
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201309171