A kind of polybisphenol a-heme/carbon nanotube electrode and its preparation method and application
A technology of carbon nanotubes and single-walled carbon nanotubes, which is applied to the electrochemical variables of materials, material analysis through electromagnetic means, instruments, etc., to achieve the effects of simple preparation methods, stable material structure properties, and strong binding force
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Embodiment 1
[0031] The carbon nanotube electrode in this embodiment is prepared by the following method:
[0032] Dissolve single-walled carbon nanotubes (SWCNT) in double distilled water, add sodium dodecyl sulfate dispersant (SDS), and obtain a black uniform carbon nanotube dispersion after ultrasonic dispersion for 50 minutes; add carbon nanotube dispersion dropwise To the surface of the indium tin oxide ITO electrode, after 4 hours of natural drying in the room at room temperature, dry it in an oven at a temperature of 40°C to obtain a carbon nanotube electrode;
[0033] The heme / carbon nanotube electrode in this embodiment is prepared by the following method:
[0034] Using differential pulse voltammetry electropolymerization technology, in the three-electrode system, the working electrode is a carbon nanotube electrode, the counter electrode is a titanium sheet, the reference electrode is a saturated calomel electrode, and the electrolyte is pH=3.0 and contains 0.15mmol / The concen...
Embodiment 2
[0039] Example 2: Redox activity characterization of polybisphenol A-heme / carbon nanotube composite electrode
[0040] In the three-electrode system, the working electrodes are four kinds of electrodes prepared in Example 1 (carbon nanotube electrode, polybisphenol A / carbon nanotube electrode, heme / carbon nanotube electrode, polybisphenol A-heme / carbon nanotube electrode), the counter electrode is a titanium sheet, and the reference electrode is a saturated calomel electrode. Using cyclic voltammetry to measure the change of the current of the four electrodes with the change of the potential under the condition that the scanning speed is 0.05V / s, To obtain the cyclic voltammogram see figure 1 .
[0041] From figure 1 It can be seen that bisphenol A and heme can be immobilized on the carbon nanotube electrode by continuous differential pulse voltammetry scanning, and the prepared polybisphenol A-heme / carbon nanotube composite electrode has good redox activity. It is also pr...
Embodiment 3
[0042] Embodiment 3: Construction of fuel cell
[0043]With the carbon nanotube electrode as the anode, four kinds of electrodes prepared in Example 1 (carbon nanotube electrode, polybisphenol A / carbon nanotube electrode, heme / carbon nanotube electrode, polybisphenol A-heme / carbon nanotube electrode) as the cathode respectively; in the anode cell, add a phosphate solution with a concentration of 0.025mol / L as the electrolyte solution, and add a concentration of 10mmol / L ascorbic acid solution as a fuel; add a concentration of 0.025mol / L phosphoric acid in the cathode cell Salt solution, and filled with saturated oxygen; the two pools are connected by a saturated potassium chloride salt bridge to form a fuel cell.
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