Mechanically Interlocked Carbon Nanotubes as a Stable Electrocatalytic Platform for Oxygen Reduction
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 aque...
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| Veröffentlicht in: | ACS applied materials & interfaces 2020-07, Vol.12 (29), p.32615-32621 |
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| container_title | ACS applied materials & interfaces |
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| creator | Wielend, Dominik Vera-Hidalgo, Mariano Seelajaroen, Hathaichanok Sariciftci, Niyazi Serdar Pérez, Emilio M Whang, Dong Ryeol |
| description | 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. |
| doi_str_mv | 10.1021/acsami.0c06516 |
| format | Article |
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| source | ACS Publications |
| subjects | Energy, Environmental, and Catalysis Applications |
| title | Mechanically Interlocked Carbon Nanotubes as a Stable Electrocatalytic Platform for Oxygen Reduction |
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