Fe2O3-MoS2-Cu2O photocatalyst film, and preparation method and application thereof
A technology of photocatalytic thin film and cuprous oxide, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems such as unsatisfactory photocatalytic effect, Achieve the effect of improving photocatalytic activity, film area control, and high separation efficiency
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preparation example Construction
[0054] Fe in this example 2 o 3 -MoS 2 -Cu 2 The preparation method of O photocatalytic film comprises the following steps:
[0055] (1) with Fe 2+ The precursor solution was used as the electrolyte, and the CHI660E electrochemical workstation was used for electrodeposition with a three-electrode system, that is, the conductive substrate conductive glass (FTO) after cleaning and drying was used as the working electrode, the graphite electrode was used as the counter electrode, and the Ag The / AgCl electrode is used as a reference electrode, and after it is naturally dried, it is calcined at a constant temperature to obtain Fe 2 o 3 film;
[0056] Fe in this implementation case 2+ The preparation method of the precursor solution is as follows: Weigh a certain amount of FeCl 2 4H 2 O dissolved in a certain volume of ethylene glycol and distilled water, Fe 2+ In the precursor solution, Fe 2+ The concentration is 0.02M, and the volume ratio of ethylene glycol to distill...
Embodiment 2
[0091] The wastewater to be treated in this embodiment is phenol wastewater, wherein the initial concentration of phenol is 10 mg / L.
[0092] Based on the Fe obtained in Example 1 of the present embodiment 2 o 3 -MoS 2 -Cu 2 The wastewater treatment method of O photocatalytic film, the treatment process is as follows:
[0093] The pH value of the wastewater to be treated is about 6, and it undergoes photoelectric catalytic degradation. The photocatalytic anode used in photocatalytic treatment includes a conductive substrate and Fe coated on the surface of the conductive substrate. 2 o 3 -MoS 2 -Cu 2 O photocatalytic film (made by embodiment 1), the cathode is a titanium sheet.
[0094] In the photocatalytic treatment in this embodiment, before the working voltage is applied to the photocatalytic electrode pair, the wastewater to be treated is also subjected to dark adsorption treatment, and the dark adsorption treatment time is 30 minutes.
[0095] The working voltage...
Embodiment 3
[0099] Repeat the operation steps of embodiment 1 and 2, difference is to prepare Fe 2 o 3 -MoS 2 -Cu 2 In the process of O photocatalytic thin film, step (1), Fe 2+ Fe in the precursor solution 2+ The source is ferrous sulfate, Fe 2+ The molar concentration is 0.2M.
[0100] Fe prepared under the conditions of this example 2 o 3 -MoS 2 -Cu 2 The photoelectrochemical properties of O photocatalytic film and the Fe prepared under the conditions of Example 1 2 o 3 -MoS 2 -Cu 2 O photocatalytic thin film is similar, compared with the Fe prepared in Comparative Example 1 2 o 3 film, the Fe of this example 2 o 3 -MoS 2 -Cu 2 The photocurrent (current density) of the O photocatalytic film is correspondingly increased by 8 times; the degradation rate of phenol is 85.5% under the condition of visible light.
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