Method for preparing mesoporous titanium dioxide optical catalyst using plant peels and films
A mesoporous titanium dioxide, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of no mesoporous anatase crystalline titanium dioxide photocatalyst, etc., to increase the reaction activity , Environmentally friendly, high catalytic activity
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Embodiment 1
[0023] Take 150 ml of diluent isopropanol in a closed beaker, add 1 ml of precursor titanium tetraisopropoxide, and stir with ultrasonic vibration for 10 minutes to prepare a precursor solution for later use.
[0024] Pretreatment of the garlic skins: clean the garlic skins with distilled water, soak in a PH4 dilute hydrochloric acid solution for 3 hours, boil for 60 minutes to remove the gum and inorganic salts in the garlic skins, and then clean them with distilled water.
[0025] Soak the pretreated garlic skin in the precursor solution and stir it for 1 hour, take it out after 12 hours and soak it in 150 ml of distilled water as a hydrolyzate, filter it after 2 hours, wash it, and dry it naturally. Finally, burn at 350°C for 2 hours, and heat up at 8-12°C / min from room temperature during burning. After cooling, light yellow mesoporous titanium dioxide powder is obtained.
Embodiment 2
[0027] Take 150 ml of diluent isopropanol in a closed beaker, add 5 ml of precursor butyl titanate, and vibrate and stir for 10 minutes to prepare a precursor solution for later use.
[0028] Carry out pretreatment to the onion skin: clean the onion skin with distilled water, soak in the acetic acid solution of pH3.5 for 20 hours, boil for 90 minutes, and then clean it with distilled water.
[0029] Immerse the pretreated onion skin in the precursor solution and stir it for 2 hours, take it out after 12 hours and soak it in 150 ml of isopropanol aqueous solution as the hydrolyzate, filter, wash and dry naturally after 2 hours. Finally, burn at 300°C for 20 hours to obtain light yellow mesoporous titanium dioxide powder.
Embodiment 3
[0031] Take 150 ml of diluent isopropanol in a closed beaker, add 10 ml of precursor titanium tetraisopropoxide, and stir for 10 minutes to prepare a precursor solution for later use.
[0032] Soak the pretreated mango skin in the precursor solution and stir for 3 hours, take it out after 12 hours and soak it in 1150 ml of amine-ammonium chloride buffer solution as the hydrolyzate, filter it after soaking for 2 hours, wash it, and dry it naturally . Finally, burn at 350°C for 2 hours to obtain light yellow mesoporous titanium dioxide powder.
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