Embedded type TiO2 hollow sphere/GaN/Ga2O3 heterojunction photocatalytic thin film and preparation method thereof
A photocatalytic film and hollow sphere technology, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. separation effect
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Embodiment 1
[0037] Embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:
[0038] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;
[0039] Step 2, SiO 2 Preparation of microspheres: Measure 1mL tetraethyl orthosilicate and 10mL absolute ethanol and stir evenly at room temperature; measure 2mL deionized water, 8mL absolute ethanol and 1mL ammonia water and stir evenly at room temperature; Mix and stir at 40°C for 2 hours to obtain SiO 2 Microsphere sol, cleaned with anhydrous ethanol and deionized water ultrasonic circulation to obtain SiO with a particle size of 300-500nm 2 Microspheres;
[0040] Step 3, SiO 2 @TiO 2 Preparation of core-shell microspheres: Measure 1mL tetrabutyl titanate and 80mL absolute ethanol, seal and stir evenly at room temperature; take the SiO prepared in step 2...
Embodiment 2
[0047] An embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:
[0048] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;
[0049] Step 2, SiO 2 Preparation of microspheres: Measure 1mL tetraethyl orthosilicate and 10mL absolute ethanol and stir evenly at room temperature; measure 2mL deionized water, 8mL absolute ethanol and 1mL ammonia water and stir evenly at room temperature; Mix and stir at 40°C for 2 hours to obtain SiO 2 Microsphere sol, cleaned with anhydrous ethanol and deionized water ultrasonic circulation to obtain SiO with a particle size of 300-500nm 2 Microspheres;
[0050] Step 3, SiO 2 @TiO 2 Preparation of core-shell microspheres: Measure 1mL tetrabutyl titanate and 80mL absolute ethanol, seal and stir evenly at room temperature; take the SiO prepared in ste...
Embodiment 3
[0055] An embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:
[0056] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;
[0057] Step 2, SiO 2 Preparation of microspheres: Measure 1mL tetraethyl orthosilicate and 10mL absolute ethanol and stir evenly at room temperature; measure 2mL deionized water, 8mL absolute ethanol and 1mL ammonia water and stir evenly at room temperature; Mix and stir at 40°C for 2 hours to obtain SiO 2 Microsphere sol, cleaned with anhydrous ethanol and deionized water ultrasonic circulation to obtain SiO with a particle size of 300-500nm 2 Microspheres;
[0058] Step 3, SiO 2 @TiO 2 Preparation of core-shell microspheres: Measure 1mL tetrabutyl titanate and 80mL absolute ethanol, seal and stir evenly at room temperature; take the SiO prepared in ste...
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