Electrochemical biosensing platform based on a hemocyanin–Au@QC NP–carbon black hybrid nano-composite film

Novel gold nanoparticles (Au@QC NPs), using quaternized cellulose (QC) as the support matrix, were used to entrap hemocyanin (Hc) with the aid of carbon black. Direct electron transfer between Hc and the electrode was achieved and an electrochemical method for the simultaneous detection of hydroquinone and catechol is developed.