Preparation and Electrochemical Properties of Hemoglobin Encapsulated UiO-66
In this paper,UiO-66 material was used as an anchoring carrier for haemoglobin.The Hb/UiO-66 electrode was prepared,and spectroscopic characterisation and electrochemical analysis were used to study in depth the interactions between Hb and the components in the UiO-66 material,and the effects of these interactions on the electron migration within the molecule and on the electroreduction of H2O2.The system successfully realised direct electrochemistry of the immobilised enzyme in UiO-66.The Hb was physically adsorbed and encapsulated in the Hb was physically adsorbed on the surface of UiO-66,and it was demonstrated that Hb/UiO-66 could directly achieve the electron migration of the enzyme and the type of electrochemical reduction reaction was surface-controlled.The sensitivity(S)and detection limit(DL)were 8.3×10-4 A·L·mol-1 and 3.18×10-8 mol/L,respectively,and the Mie constant(Km)was 17.96 μM,suggesting that Hb maintains a good catalytic effect on the substrate H2O2.
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