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Electrochemical characterization of the particle-immobilized silicon electrodes in ethanol, methanol, and glucose. (a) CVs of a Si1–Si electrode and a Si2.8–Si electrode in PBS (the background) at 7 and in the same PBS containing 20 mM ethanol. (b) The ethanol calibration curves of the same electrodes as in (a) and the calibration curves of the Si1–Si electrode for methanol and glucose at 7. The ethanol calibration curves were obtained at potentials of 0.2 and 0.3 V for the Si1–Si electrode and the Si2.8–Si electrode, respectively. The methanol and glucose calibration curves were obtained at 0.2 V. Each data point shows the fuel oxidation current obtained by subtracting the background current from the total anodic current. Similar calibration results were obtained with different electrodes.
The and characteristics of the prototype hybrid biofuel cell in 200 mM glucose at room temperature and 7. The particle-immobilized HOPG anode and the enzyme-immobilized HOPG cathode were put inside a 30 ml beaker which contained glucose dissolved in PBS.
The dependence of the particle-catalyzed electro-oxidation of ethanol. The LSVs were obtained with a Si1-CP electrode. Each LSV shows the fuel oxidation current obtained by subtracting the background current from the total anodic current.
The effect of white light illumination and darkness on ethanol oxidation current. (a) The current density produced by a Si1–Si electrode in 200 mM ethanol at 7 shows an increase in darkness as compared to that produced in room light . The inset is a current-time trace, showing the effect of turning off and turning on the light. The trace was obtained using a different electrode at 0.3 V and 200 mM of ethanol. (b) The catalytic current produced by a Si1-CP electrode in 200 mM ethanol at 13 in room light, in darkness, and under strong illumination of at 13.
Kinetic parameters of the catalytic processes of the three fuels using the Si2.8–Si electrode.
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