Preparation method of titanium dioxide nanorod composite photoanode
A technology of titanium dioxide and nanorods, applied in the field of photoelectrochemistry
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[0044] The specific preparation and performance testing steps of the present invention are as follows. Among them, steps (1) and (2) are commonly used preparation TiO 2 Nanotube Array Membrane Approach:
[0045] (1) Pretreatment of FTO substrate
[0046] Commercialized FTO conductive glass (transmittance > 90%) was cut into rectangular samples with a length of 15-25mm, a width of 10-15mm, and a thickness of 2.2-2.3mm, and then ultrasonically cleaned with acetone, ethanol, and deionized water for 20 ~30min, dry for later use.
[0047] (2)TiO 2 Fabrication of Nanorod Array Films
[0048] Preparation of TiO on FTO by hydrothermal method 2 For the nanorod array film, the solution used is tetrabutyl titanate solution. First prepare 50-80mL of 1:1 (ratio of concentrated hydrochloric acid to deionized water) hydrochloric acid solution, after fully stirring, add an appropriate amount of tetrabutyl titanate 1-2mL dropwise, and continue stirring until a clear solution is obtained....
Embodiment 1
[0059] According to the concrete steps of above-mentioned technical scheme, prepare g-C 3 N 4 / SrTiO 3 / TiO 2 Nanorod composite film photoanode, and test its photogenerated cathodic protection effect on 403SS.
[0060] Pretreatment of FTO substrate: commercialized FTO (transmittance > 90%) is cut into rectangular samples, 15mm long, 10mm wide, and 2.2mm thick, ultrasonically cleaned with acetone, ethanol, and deionized water for 20 minutes, and dried for later use .
[0061] TiO 2 Preparation of nanorod array film: prepare 1:1 hydrochloric acid solution (60mL), after stirring well, add 1.25mL tetrabutyl titanate dropwise, continue stirring until clarification. Four FTO test pieces are fixed on the sample stage with a certain inclination to ensure that the conductive surface of the test piece is inclined downward. Transfer the prepared tetrabutyl titanate solution together with the sample platform into the reaction kettle, seal it and carry out the reaction in an oven. T...
Embodiment 2
[0071] Pretreatment of FTO substrate: commercialized FTO (transmittance > 90%) is cut into rectangular samples, 15mm long, 10mm wide, and 2.2mm thick, ultrasonically cleaned with acetone, ethanol, and deionized water for 20 minutes, and dried for later use .
[0072] TiO 2Preparation of nanorod array film: prepare 1:1 hydrochloric acid solution (60mL), after stirring well, add 1.25mL tetrabutyl titanate dropwise, continue stirring until clarification. Four FTO test pieces are fixed on the sample stage with a certain inclination to ensure that the conductive surface of the test piece is inclined downward. Transfer the prepared tetrabutyl titanate solution together with the sample platform into the reaction kettle, seal it and carry out the reaction in an oven. The hydrothermal reaction temperature is 150°C and the time is 5h. After the reaction, it was naturally cooled to room temperature, and the samples were taken out, washed with deionized water, and dried at 80°C.
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