Preparation method and application thereof for zinc ferrite/titanium dioxide nano compounded visible light photocatalyst
A technology of titanium dioxide and photocatalyst, which is applied in the field of environmental pollution control, can solve the problem that the photocatalytic properties of photocatalysts have not been better applied, and achieve the effects of improving electron transfer efficiency, broadening the photoresponse range, and improving separation efficiency
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[0034] Example 1
[0035] The industrial pure titanium sheet is cut into several titanium sheets with a size of 20mm×40mm. It was repeatedly polished with 240#, 400#, 800# and 1500# emery paper until the surface was clean and smooth, then placed in an ultrasonic oscillation tank for ultrasonic cleaning, and then immersed in HF:HNO after cleaning. 3 : H 2 The etching was performed in a mixed solution of O=1:4:5 for 40 seconds, and the finally etched titanium sheets were washed with ethanol solution and deionized water for 20 minutes, respectively. The treated titanium sheets were placed in the air to dry naturally. Connect the titanium sheet and the platinum sheet to the positive and negative electrodes of the DC power supply respectively. The electrolyte is composed of hydrofluoric acid, and the concentration of hydrofluoric acid in the electrolyte is 0.2wt%. DC regulated power supply. In the process of galvanostatic anodic oxidation, the anodic oxidation voltage and time ...
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[0038] Example 2
[0039] According to the preparation method of the present invention in Example 1, except that the electrolyte is replaced with hydrofluoric acid with a concentration of 0.05wt%, the zinc ferrite / titanium dioxide nanocomposite visible light photocatalyst is prepared.
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[0040] Example 3
[0041] According to the preparation method of the present invention in Example 1, except that the electrolyte is replaced with hydrofluoric acid with a concentration of 1.0 wt%, a zinc ferrite / titanium dioxide nanocomposite visible light photocatalyst is prepared.
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