Preparation method and application of reduced graphene oxide loaded titanium dioxide film
A titanium dioxide and graphene technology, applied in material analysis using radiation diffraction, material analysis using wave/particle radiation, electrodes, etc., can solve problems such as poor electrical conductivity, low electrocatalytic efficiency, and limited electrocatalytic performance, etc. Achieve the effects of low preparation cost, excellent photoelectric conversion performance, and simple process
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Embodiment 1
[0026] Measure 30 ml of hydrochloric acid, 30 ml of deionized and 1 ml of butyl titanate, mix them in a beaker, and stir magnetically at room temperature for 30 minutes, then transfer the mixed solution to a 100 ml Teflon-lined placed the cleaned fluorine-doped tin dioxide transparent conductive glass at the bottom of the autoclave, and placed the autoclave in an oven at 150 ºC to react for 12 hours. After the reaction, the autoclave was naturally cooled to room temperature , take out the product, wash it with deionized water, then place it in an oven at 60 ºC, and dry it in the atmosphere to obtain a titanium dioxide film.
[0027] Weigh a certain amount of graphene oxide, configure 0.5 g / L graphene oxide phosphoric acid solution, and place it in an ultrasonic cleaning machine for ultrasonic treatment for 2 hours, then use the prepared titanium dioxide film as the working electrode, and the platinum sheet as the counter electrode. Electrode, Ag / AgCl as a reference electrode, ...
Embodiment 2
[0035] Mix 30 ml of hydrochloric acid, 30 ml of deionized and 1 ml of butyl titanate and magnetically stir for 30 minutes at room temperature, then pour the mixed solution into a 100 ml autoclave, and place the cleaned FTO transparent conductive glass At the bottom of the autoclave, the autoclave was placed in an oven at 150 ºC for 12 hours. After the reaction, the autoclave was naturally cooled to room temperature, and the product was taken out, cleaned with deionized water, and then placed in a 60 ºC oven. In an oven, dry in the atmosphere to obtain a titanium dioxide film.
[0036] Weigh a certain amount of graphene oxide, configure 0.5 g / L graphene oxide phosphoric acid solution, and place it in an ultrasonic cleaning machine for ultrasonic treatment for 2 hours, then use the prepared titanium dioxide film as the working electrode, and the platinum sheet as the counter electrode. Electrode, Ag / AgCl as a reference electrode, using three-electrode method to deposit reduced g...
Embodiment 3
[0039] In this example, the same process conditions as in Example 1 were used to prepare a titanium dioxide film. In the process of preparing reduced graphene oxide by electrodeposition, the deposition voltage was -0.1V, and the electrodeposition time was 5 minutes.
[0040] Compared with Example 1, the number and peak positions of the diffraction peaks in the X-ray diffraction spectrum obtained in this example have not changed significantly, and no diffraction peaks of reduced graphene oxide have been observed. The Raman spectrum of this embodiment is at 445cm -1 and 607cm -1 Two relatively strong Raman scattering peaks appear at , corresponding to the B1g and Eg vibrational modes of rutile phase TiO2, respectively. Due to the relatively small content of reduced graphene oxide, at 1418 and 1615 cm -1 Two very weak Raman scattering peaks appear at , corresponding to the D and G bands of reduced graphene oxide, respectively. The composite thin film obtained in this example a...
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