Iron oxide particles are the active sites for hydrogen peroxide sensing at multiwalled carbon nanotube modified electrodes.
We demonstrate that the "electrocatalytic" hydrogen peroxide detection reported at multiwalled carbon nanotube modified electrodes is due to iron oxide particles arising from the chemical vapor deposition nanotube fabrication process rather than due to intrinsic catalysis attributable to the carbon nanotubes arising, for example, from edge plane-like sites/defects.
Sljukić
Biljana
B
Physical and Theoretical Chemistry Laboratory, University of Oxford, UK.
Banks
Craig E
CE
Compton
Richard G
RG
D001665:Binding Sites; D004563:Electrochemistry; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D037742:Nanotubes, Carbon; D010084:Oxidation-Reduction; D013499:Surface Properties
D005290:Ferric Compounds; D037742:Nanotubes, Carbon; C000499:ferric oxide; D006861:Hydrogen Peroxide