Method for for preparing cadmiumsulfide quantum dot sensitized porous titanium dioxide photoelectrode
A porous titanium dioxide and quantum dot sensitization technology, which is applied in circuits, capacitors, electrical components, etc., can solve the problems of poor battery stability, poor crystallization performance of quantum dots, and low photoelectric conversion efficiency, and achieve good crystallization performance, stability and Improvement of photoelectric conversion performance, good light absorption and effect of photoelectric conversion performance
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[0016] Example 1:
[0017] (1) Weigh 5mmol of polyoxyethylene lauryl alcohol, heat it in a water bath to melt it, add 10ml of n-butanol and 25ml of cyclohexane to obtain a mixed solution, and then add 2mmol of cadmium nitrate and 6mmol of thiourea to the mixed solution. It is dissolved; then deionized water is added to form a microemulsion;
[0018] (2) Pour the prepared microemulsion into a reactor and react for 8 hours at 120°C; the reaction product was repeatedly washed with ethanol to remove excess surfactant, and the product was vacuum dried at 60°C for 12 hours to obtain a bright yellow Powder sample. The TEM photograph of the sample is shown in Figure 1. It can be seen from the photograph that the shape of the particles is regular, and the particle size is below 10 nm. Pour alcohol into the powder sample to form an alcohol solution of cadmium sulfide quantum dots;
[0019] (3) Add 50ml of isobutyl titanate dropwise to 300ml of 0.1M nitric acid solution at room temperature, ...
Example Embodiment
[0023] Example 2:
[0024] (1) Weigh 5mmol of polyoxyethylene lauryl alcohol, heat it in a water bath to melt it, add 15ml of n-butanol, 30ml of cyclohexane to obtain a mixed solution, then add 2mmol of cadmium nitrate and 8mmol of thiourea to the mixed solution, and stir vigorously Dissolve it; then add deionized water to form a microemulsion;
[0025] (2) Pour the prepared microemulsion into a reactor and react for 5 hours at 200°C; the reaction product is repeatedly washed with ethanol to remove excess surfactant, and the product is vacuum dried at 60°C for 12 hours to obtain a bright yellow powder状sample. Pour alcohol into the powder sample to form an alcohol solution of cadmium sulfide quantum dots;
[0026] (3) Prepare the titanium dioxide film as in Example 1;
[0027] (4) Soak the porous titanium dioxide film in an alcohol solution of oxalic acid and thioglycolic acid for 24 hours. The molar concentration of oxalic acid in the solution is 2 mmol / L and the molar concentrati...
Example Embodiment
[0028] Example 3:
[0029] (1) Weigh 5mmol of sodium dodecylbenzene sulfonate, heat it in a water bath to melt it, add 5ml of n-butanol and 15ml of cyclohexane to obtain a mixed solution, and then add 3mmol of cadmium nitrate and 6mmol of thiourea to the mixed solution. Stir vigorously to dissolve; then add deionized water to form a microemulsion;
[0030] (2) Pour the prepared microemulsion into a reactor and react at 100°C for 10 hours. The reaction product was repeatedly washed with ethanol to remove excess surfactant, and the product was vacuum dried at 60° C. for 12 hours to obtain a bright yellow powder sample. Pour alcohol into the powder sample to form an alcohol solution of cadmium sulfide quantum dots;
[0031] (3) Prepare the titanium dioxide film as in Example 1;
[0032] (4) Soak the porous titanium dioxide film in an alcohol solution of oxalic acid and thioglycolic acid for 24 hours. The molar concentration of oxalic acid in the solution is 2 mmol / L and the molar con...
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