Single-Entity “Nano-Catalysis”: Carbon Nanotubes and the VO₂⁺/VO²⁺ Redox Reaction

Cyclic voltammetry and single-entity electrochemistry (aka “nano-impacts”) are used to evaluate the electrocatalysis of VO2+/VO2+ redox couple by means bamboo-like multiwalled carbon nanotubes particularly in comparison with kinetics seen at macro-electrodes. The individual shown accelerate reaction oxidative direction but retard it reductive direction! asymmetry is explained terms multistep nature electrode relative sequence electron transfer chemical steps. When an ensemble drop-casted onto a glassy electrode, electrochemically nearly reversible response understood changed mass transport regime under which occurs.