Mechanically Interlocked Carbon Nanotubes as a Stable Electrocatalytic Platform for Oxygen Reduction.
Dominik WielendMariano Vera-HidalgoHathaichanok SeelajaroenNiyazi Serdar SariçiftçiEmilio M PérezDong Ryeol WhangPublished in: ACS applied materials & interfaces (2020)
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.
Keyphrases
- carbon nanotubes
- ionic liquid
- hydrogen peroxide
- gold nanoparticles
- molecularly imprinted
- reduced graphene oxide
- label free
- electron transfer
- walled carbon nanotubes
- nitric oxide
- high throughput
- genome wide
- single cell
- gene expression
- high resolution
- solid state
- mass spectrometry
- solid phase extraction
- risk assessment
- simultaneous determination