Low-temperature annealing of carbon black with urea was recently found to be an effective method for introducing surface nitrogen groups, which enable deposition of highly electrocatalytically active ultrasmall metal nanoparticles on this material. Here, we find this simple nitrogen-doping strategy can be extended to graphite (despite its lack of oxygenated surface species) and carbon fiber. Nitrogen-doped graphite can be employed to prepare screen-printed carbon electrodes (N-SPCEs) that exhibit good electrocatalytic activity towards the reduction of hydrogen peroxide and practical utility as H<sub>2</sub>O<sub>2</sub> sensors with good stability, reproducibility, wide linear range, and competitive limit of detection compared to other N-doped carbon-based sensors. Metal nanoparticles can also be easily immobilized on N-SPCEs and ultramicroelectrodes prepared from N-doped carbon fiber for electrocatalytic applications and fundamental studies.

Facile nitrogen doping of graphite and carbon fiber for electrochemical sensing applications and immobilization of metal nanoparticles

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.