Journal
APPLIED SURFACE SCIENCE
Volume 544, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.148781
Keywords
Electrochemical corrosion; Carbon film; Nitrogen-doped graphene sheets; Amorphous carbon; Oxidation
Categories
Funding
- National Nature Science Foundation of China [52005343, 51975383]
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This study investigated the electrochemical corrosion behaviors of N-doped graphene sheets embedded carbon (N-GSEC) film in H2SO4 solutions. The corrosion of N-GSEC film originated from the oxidation of carbon, resulting in the formation of N-doped graphene oxides and more exposed graphene edges, which significantly improved the electron transfer rates and electrochemical activity. The corroded N-GSEC exhibited much higher electrocatalytic activity for phenol biomolecules.
Electrochemical corrosion behaviors of N-doped graphene sheets embedded carbon (N-GSEC) film in H2SO4 solutions were investigated. We found that the corrosion of N-GSEC film originated from the oxidation of carbon, and the sp(2)-hybridized carbon was more susceptible to be oxidized than the sp(3)-hybridized carbon. The corrosion resulted in the formation of N-doped graphene oxides and more exposed graphene edges, which highly improved the electron transfer rates as well as the electrochemical activity of N-GSEC films. The corroded N-GSEC exhibited much higher electrocatalytic activity for phenol biomolecules. These findings shed light on the surface functional modification and application of N-GSEC films.
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