Mechanically Interlocked Carbon Nanotubes as a Stable Electrocatalytic Platform for Oxygen Reduction
| Autor: | Hathaichanok Seelajaroen, Emilio M. Pérez, Mariano Vera-Hidalgo, Niyazi Serdar Sariciftci, Dong Ryeol Whang, Dominik Wielend |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Rotaxane 02 engineering and technology Carbon nanotube 010402 general chemistry Electrocatalyst Electrochemistry 01 natural sciences Anthraquinone law.invention chemistry.chemical_compound law Oxygen reduction reaction electrocatalysis rotaxane General Materials Science Hydrogen peroxide 021001 nanoscience & nanotechnology Oxygen reduction hydrogen peroxide production 0104 chemical sciences oxygen reduction chemistry Chemical engineering immobilization non-covalent architecture 0210 nano-technology Research Article |
| Zdroj: | ACS Applied Materials & Interfaces Repositorio Institucional del Instituto Madrileño de Estudios Avanzados en Nanociencia instname |
| ISSN: | 1944-8252 |
| Popis: | Mechanically interlocking redox-active anthraquinone onto single-walled carbon nanotubes (AQ-MINT) gives a new and advanced example of a noncovalent architecture for an electrochemical platform. Electrochemical studies of AQ-MINT as an electrode reveal enhanced electrochemical stability in both aqueous and organic solvents compared to physisorbed AQ-based electrodes. While maintaining the electrochemical properties of the parent anthraquinone molecules, we observe a stable oxygen reduction reaction to hydrogen peroxide (H2O2). Using such AQ-MINT electrodes, 7 and 2 μmol of H2O2 are produced over 8 h under basic and neutral conditions, while the control system of SWCNTs produces 2.2 and 0.5 μmol, respectively. These results reveal the potential of this rotaxane-type immobilization approach for heterogenized electrocatalysis. |
| Databáze: | OpenAIRE |
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