A kind of preparation method of AgCl/biocl photocatalyst of tubular AgCl structure
A photocatalyst, tubular technology, applied in physical/chemical process catalysts, chemical instruments and methods, other chemical processes, etc., can solve problems such as low absorption, achieve good degradation performance, good application prospects, and scientific preparation methods.
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Embodiment 1
[0028] The preparation method of the AgCl / BiOCl photocatalyst of tubular AgCl structure that this embodiment involves comprises the following steps:
[0029] (1) Preparation of BiOCl
[0030] ① Add 0.01-0.05mol bismuth oxide (Bi 2 o 3 ) was added dropwise 5-30mL hydrochloric acid (HCl), stirred evenly the above two mixtures were completely dissolved to form a transparent solution, and then ammonia water (NHCl) was added dropwise to the above transparent solution 3 ·H 2 O) to adjust the pH value to 5-10, so that a white precipitate appears in the transparent solution to form a suspension;
[0031] ② Place the suspension at 30-60°C under temperature control and continue magnetic stirring for 20-60 minutes to form a white colloid, and use deionized water and absolute ethanol (C 2 h 5 OH) After centrifuging and washing the above-mentioned white colloid for three times, drying the white colloid at a temperature of 40-80°C for 24 hours, collecting and obtaining a white powder o...
Embodiment 2
[0050] In this embodiment, the AgCl / BiOCl photocatalyst of loading different proportions of AgCl prepared in Example 1 is tested for ultraviolet-visible diffuse reflectance (DRS), and the test results are as follows: Image 6 Shown: In the range of 360-800nm, the light absorption ability of AgCl / BiOCl loaded with 2% AgCl, AgCl / BiOCl loaded with 5% AgCl and AgCl / BiOCl loaded with 10% AgCl is higher than that of pure BiOCl. The AgCl / BiOCl photocatalyst prepared in Example 1 has strong visible light responsiveness in the visible light range (390-760nm).
Embodiment 3
[0052] In this embodiment, methyl orange is used as the target pollutant, and the photodegradability of the prepared AgCl / BiOCl photocatalyst is experimentally studied by using a visible light source. It is confirmed that the AgCl / BiOCl photocatalyst loaded with 2% AgCl, 5% AgCl and 10% AgCl respectively developed in Example 1 has a good degradation effect on methyl orange, and the AgCl / BiOCl loaded with 5% AgCl Photocatalysts have the best performance in degrading the pollutant methyl orange (such as Figure 7 Shown), for the methyl orange solution that mass concentration is 80mg / L, the degradation rate of methyl orange can reach 91% after 60 minutes, and the degradation rate of pure BiOCl is only 15% under the same condition.
[0053] In this embodiment, methyl orange (MO) is used as the degradation product, and the specific degradation experiments are as follows:
[0054] Prepare the MO aqueous solution with an initial mass concentration of 80 mg / L, and then add AgCl / BiOCl...
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