期刊
CHEMSUSCHEM
卷 12, 期 8, 页码 1664-1672出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201900238
关键词
cobalt nanoparticles; core-shell catalysts; hydrogen peroxide; N-doped carbons; oxygen reduction
资金
- University of Trieste
Electrocatalytic oxygen reduction (ORR) is an emerging synthetic strategy to prepare H2O2 in a sustainable fashion. N-doped graphitic carbon with embedded cobalt nanoparticles was selected as an advanced material able to selectively trigger the ORR to form H2O2 with a faradaic efficiency of almost 100 % at very positive applied potentials. The production of H2O2 proceeded with high rates as calculated by bulk electrolysis (49 mmol g(-1) h(-1)) and excellent current densities (approximate to-0.8 mA cm(-2) at 0.5 V vs. reversible hydrogen electrode). The totally selective behavior depended on the combination of concomitant material features, such as the textural properties, the nature of the metal, the distribution of N moieties, the acidic environment, and the applied potential.
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