Details

Autor(en) / Beteiligte

• Wang, Lu
• Ambrosi, Adriano
• Pumera, Martin

Titel

"Metal-Free" Catalytic Oxygen Reduction Reaction on Heteroatom-Doped Graphene is Caused by Trace Metal Impurities

Ist Teil von

• Angewandte Chemie (International ed.), 2013-12, Vol.52 (51), p.13818-13821

Auflage

International ed. in English

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2013

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. Carbon materials: Heteroatom‐doped graphene surfaces are used as electrocatalysts for the oxygen reduction reaction. The claimed “metal‐free” electrocatalysis of the oxygen reduction reaction is caused by metallic impurities (see picture) present within the graphene materials.