Enzymes immobilized on amine-terminated ionic liquid-functionalized carbon nanotube for hydrogen peroxide determination

► Amine-terminated IL-functionalized MWCNTs modified electrode was fabricated. ► It exhibits a high surface area for enzyme immobilization. ► Cyt c-MWNT-IL-GCE greatly enhanced the electrochemical response of H2O2. ► Linearity of H2O2 signals ranged from 0.04 to 100 μm.