One‐pot synthesis of two‐dimensional porphyrin‐based polymer and derived N‐doped porous carbon as efficient oxygen reduction catalysts
| Autor: | Jun-Ying He, Jian-Jun Chen, Tian-Lu Cui |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Diffusion Doping Biomedical Engineering Limiting current chemistry.chemical_element Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Porphyrin 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Specific surface area General Materials Science 0210 nano-technology Carbon |
| Zdroj: | Micro & Nano Letters. 15:140-144 |
| ISSN: | 1750-0443 |
| DOI: | 10.1049/mnl.2019.0407 |
| Popis: | This work describes the synthesis and functions of a two-dimensional porous polymer based on porphyrin. Upon condensation, coordination and treatment with high temperature, porphyrin-based porous carbon nanosheets were obtained with the high specific surface area of 466 m2 g−1. Benefiting from its high surface area, co-doping with iron/nitrogen and hierarchical porous structure, the optimised example exhibits excellent electrochemical performance for the oxygen reduction reaction under alkaline conditions with a low half-wave potential of 0.73 V (lower than 0.78 V for Pt/C), a dominant four-electron transfer mechanism (n = 3.97 at 0.64 V) and a high diffusion limiting current density of 5.27 mA cm−2. |
| Databáze: | OpenAIRE |
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