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an embedded tio 2 hollow ball/gan/ga 2 o 3 Heterojunction photocatalytic thin film and preparation method thereof

A photocatalytic thin film and hollow sphere technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as limiting photocatalytic activity, and achieve improved photocatalytic efficiency, avoiding recombination, and high efficiency. separation effect

Active Publication Date: 2020-06-02
东营睿港招商服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wide bandgap and high photogenerated carrier recombination rate limit the β-Ga 2 o 3 photocatalytic activity

Method used

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  • an embedded tio <sub>2</sub> hollow ball/gan/ga <sub>2</sub> o <sub>3</sub> Heterojunction photocatalytic thin film and preparation method thereof
  • an embedded tio <sub>2</sub> hollow ball/gan/ga <sub>2</sub> o <sub>3</sub> Heterojunction photocatalytic thin film and preparation method thereof
  • an embedded tio <sub>2</sub> hollow ball/gan/ga <sub>2</sub> o <sub>3</sub> Heterojunction photocatalytic thin film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] Embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:

[0039] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;

[0040] 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;

[0041] 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

[0048] An embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:

[0049] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;

[0050] 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;

[0051] 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

[0056] An embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 A method for preparing a heterojunction photocatalytic thin film, comprising the following steps:

[0057] Step 1, ITO transparent conductive glass pretreatment: ultrasonic cleaning with acetone, absolute ethanol, and deionized water respectively, and vacuum drying;

[0058] 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;

[0059] 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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Abstract

The invention belongs to the field of photocatalytic films, and specifically relates to an embedded TiO 2 Hollow sphere / GaN / Ga 2 O 3 Heterojunction photocatalytic film and preparation method thereof, including ITO transparent conductive glass, β-Ga located on ITO transparent conductive glass 2 O 3 thin film on β‑Ga 2 O 3 GaN film on film, β‑Ga 2 O 3 β‑Ga between thin film and GaN thin film 2 O 3 / GaN heterojunction film, embedded in β‑Ga 2 O 3 / TiO between GaN heterojunction films 2 hollow ball. The photocatalytic film of the present invention has a three-dimensional spatial multi-phase heterojunction interface structure, including TiO 2 / Ga 2 O 3 ,TiO 2 / GaN、GaN / Ga 2 O 3 and TiO 2 / GaN / Ga 2 O 3 The heterojunction interface has a synergistic effect with each other, can efficiently separate photogenerated carriers, and greatly improves the photocatalytic performance of the material; the photocatalytic efficiency of degrading rhodamine B is high, and the photocatalytic efficiency remains constant after multiple cycles. The present invention Embedded TiO 2 Hollow sphere / GaN / Ga 2 O 3 Heterojunction photocatalytic films have stable performance and have great application prospects in the field of photocatalytic degradation of organic pollutants.

Description

technical field [0001] The invention belongs to the field of photocatalytic thin films, in particular to an embedded TiO 2 Hollow sphere / GaN / Ga 2 o 3 Heterojunction photocatalytic thin film and its preparation method. [0002] technical background [0003] With the rapid development of modern industry, the problem of water environment pollution is becoming more and more serious, which poses a serious threat to the growth and reproduction of animals and plants, as well as human health and living environment. Especially in areas where textile printing and dyeing enterprises are densely populated, the situation of high consumption, high emissions, and low efficiency has not been fundamentally improved, and textile printing and dyeing wastewater is the main source of pollution. Therefore, it is an important task in the field of environmental protection to establish efficient, environmentally friendly and low-cost treatment methods for organic dye wastewater. At present, the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/06B01J37/02B01J37/34B01J37/10B01J37/08C02F1/30C02F103/30
CPCC02F1/30B01J27/24B01J37/0215B01J37/0238B01J37/088B01J37/10B01J37/343C02F2103/30C02F2305/10B01J35/59B01J35/39
Inventor 张香丽
Owner 东营睿港招商服务有限责任公司
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