Highly Selective Two-Electron Oxygen Reduction Catalyzed by Mesoporous Nitrogen-Doped Carbon

Electrochemical reduction of oxygen molecules can produce H2O2, which is an important chemical for a green and sustainable society; therefore, the development of catalysts for this reaction is necessary. We propose mesoporous nitrogen-doped carbon prepared from (1-methyl-1H-pyrrole-2-yl)­methanol in...

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Bibliographic Details
Published inACS catalysis Vol. 4; no. 10; pp. 3749 - 3754
Main Authors Park, Jisung, Nabae, Yuta, Hayakawa, Teruaki, Kakimoto, Masa-aki
Format Journal Article
LanguageEnglish
Published American Chemical Society 03.10.2014
Subjects
carbon catalyst
KIT-6
hard template
electrocatalysis
hydrogen peroxide
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Summary:Electrochemical reduction of oxygen molecules can produce H2O2, which is an important chemical for a green and sustainable society; therefore, the development of catalysts for this reaction is necessary. We propose mesoporous nitrogen-doped carbon prepared from (1-methyl-1H-pyrrole-2-yl)­methanol in the presence of a mesoporous SiO2 template (KIT-6). The nitrogen content of the resulting carbon can be controlled in the range of 0–10 at. % and all prepared samples have well-ordered mesopores with diameters of 3.4–4.0 nm. Electrochemical studies indicate the present materials have high catalytic activities with high selectivity toward H2O2 over 90%. Such high selectivity toward H2O2 is probably due to good mass transport in the catalyst layer, which is enhanced by the mesoporous structure.
ISSN:2155-5435
2155-5435
DOI:10.1021/cs5008206