Direct electrochemistry and electrocatalysis of hemoglobin-TiO₂ whisker film modified glassy carbon electrode

In this study, Hb TiO₂ whisker nanocomposites are prepared by incorporating TiO₂ whisker with hemoglobin (Hb). Our studies illustrate that the self-assembled Hb TiO₂ whisker films could efficiently facilitate the direct electron transfer of Hb on glassy carbon electrode (GCE). Moreover, our results demonstrate that the catalytic activity to the reduction of H₂O₂ could be observed on the Hb TiO₂ whisker modified GCE and the photovoltaic effect of TiO₂ whisker can greatly enhance the detection sensitivity of electrocatalytic reduction.