Electrochemical Study of Ferritin on SWNTs-CTAB Modified Electrode
A ferritin-single walled carbon nanotube-hexadecyl trimethyl ammonium bromide(ferritin-SWNTs-CTAB) film modified glassy carbon electrode had been prepared.Transmission electron microscopy and atomic force microscopy were used to characterize the morphology of films.Reflectance absorption infrared showed that the ferritin retained their native structure in SWNTs-CTAB film.The process of uptake and release of iron by ferritin was studied by cyclic voltammetry: in the cathodic scan process,the Fe in the ferritin core was reduced to Fe and released,in the anodic scan process,the Fe was oxidased to Fe and uptake to ferritin core again.A control experiment was designed which entailed forming a film from an authentic apoferritin and observed how apoferritin to behave under similar iron uptake conditions.The control experiment further confirmated the uptake and release process of iron in ferritin.