Diatomite-loaded lanthanum-doping nano bismuth oxychloride composite material as well as preparation method and application thereof
A technology of bismuth oxychloride and composite materials, applied in chemical instruments and methods, catalyst activation/preparation, separation methods, etc., can solve the problems of difficulty in obtaining supported nano-BiOCl thin films, poor catalytic effect, and high production costs, and achieves an increase in the number, The effect of prolonging life and promoting migration
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Embodiment 1
[0035] A preparation method of a diatomite-supported lanthanum-doped nano-bismuth oxychloride composite material, specifically comprising the following steps:
[0036] S1. Wet and ultra-finely grind diatomite to a median particle size of 3.2 μm, then dry at 105°C for 5 hours until the moisture content of diatomite is less than 0.5%, and then disperse to obtain diatomite concentrate;
[0037] S2. Add 6 g of the diatomite obtained in S1 and 180 mL of distilled water into the reaction vessel (so that the water is immersed in the diatomite), and slowly drop in 30 mL of BiCl with a concentration of 2 mol / L under stirring. 3Aqueous solution, then drop into the mixed solution of ammonium sulfate solution and concentrated hydrochloric acid (the amount of ammonium sulfate solution is 6.4mL, the amount of concentrated hydrochloric acid is 2.9mL), continue to stir for 5min, and then react at 20°C for 0.5h (make BiCl 3 Hydrolyzed into fine hydrated BiOCl particles and precipitated on the ...
Embodiment 2
[0040] A preparation method of a diatomite-supported lanthanum-doped nano-bismuth oxychloride composite material, specifically comprising the following steps:
[0041] S1. Wet and ultra-finely grind diatomite to a median particle size of 3.6 μm, then dry at 110° C. for 3 hours until the moisture content of diatomite is less than 0.5%, and then disperse to obtain diatomite concentrate;
[0042] S2. Add 10 g of the diatomite obtained in S1 and 300 mL of distilled water into the reaction vessel (so that the water is submerged in the diatomite), and slowly drop in 36 mL of BiCl with a concentration of 2 mol / L under stirring. 3 Aqueous solution, then drip the mixed solution of ammonium sulfate solution and concentrated hydrochloric acid (wherein the addition amount of ammonium sulfate solution is 12.3mL, the addition amount of concentrated hydrochloric acid is 7.2mL), continue stirring for 8min, then react at 60°C for 1.5h (make BiCl 3 Hydrolyzed into fine hydrated BiOCl particles...
Embodiment 3
[0045] A preparation method of a diatomite-supported lanthanum-doped nano-bismuth oxychloride composite material, specifically comprising the following steps:
[0046] S1. Wet and ultra-finely grind diatomite to a median particle size of 4.8 μm, then dry at 115° C. for 2 hours until the moisture content of diatomite is less than 0.5%, and then disperse to obtain diatomite concentrate;
[0047] S2. Add 12 g of the diatomite obtained in S1 and 360 mL of distilled water into the reaction vessel (so that the water is submerged in the diatomite), and slowly drop 48 mL of BiCl with a concentration of 2 mol / L under stirring. 3 Aqueous solution, then drop into the mixed solution of ammonium sulfate solution and concentrated hydrochloric acid (the amount of ammonium sulfate solution added is 8.9mL, the amount of concentrated hydrochloric acid added is 5.8mL), continue to stir for 10min, and then react at 95°C for 2.5h (make BiCl 3 Hydrolyzed into fine hydrated BiOCl particles and prec...
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