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TiO2/ZrTiO4/SiO2 composite photocatalyst with inverse opal structure and preparation method thereof

A technology of inverse opal structure and composite light is applied in the field of inverse opal structure TiO2/ZrTiO4/SiO2 composite photocatalyst, which can solve the problems of difficult preparation and poor photocatalytic effect, and achieves improved absorption and utilization, low preparation cost and repeatability. high effect

Pending Publication Date: 2021-08-03
SHAANXI UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

[0003] In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of inverse opal structure TiO 2 / ZrTiO 4 / SiO 2 Composite photocatalyst and its preparation method can solve the problem of visible light catalyst ZrTiO 4 Difficult to prepare, single TiO 2 Problems such as poor photocatalytic effect

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  • TiO2/ZrTiO4/SiO2 composite photocatalyst with inverse opal structure and preparation method thereof
  • TiO2/ZrTiO4/SiO2 composite photocatalyst with inverse opal structure and preparation method thereof

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Embodiment 1

[0022] The present invention combines template method and sol-gel method to prepare precursor, uses PS ball as soft template, soaks TiO 2 / ZrTiO 4 / SiO 2 solution, which was heat-treated to obtain the inverse opal structure TiO 2 / ZrTiO 4 / SiO 2 Composite photocatalyst, the specific steps are as follows:

[0023] (1) Prepare polystyrene (PS) suspension with 6mL styrene, 0.2mL α-methyl propylene, and 100mL water as raw materials, stir at 80°C for 8 hours, and place the PS suspension in a blast drying oven at 40°C to keep warm After 12h, a block PS template was obtained;

[0024] (2) Configuration of precursor solution A: Weigh a total of 12 g of citric acid, zirconium oxychloride and titanium sulfate according to the mass ratio of 2.6:1:3.7, and dissolve the citric acid, zirconium oxychloride and titanium sulfate In 40mL deionized water, magnetically stirred for 20min to obtain precursor solution A.

[0025] (3) Configuration of solution B: Calculate the amount of ethyl ...

Embodiment 2

[0031] The present invention combines template method and sol-gel method to prepare precursor, uses PS ball as soft template, soaks TiO 2 / ZrTiO 4 / SiO 2 solution, which was heat-treated to obtain the inverse opal structure TiO 2 / ZrTiO 4 / SiO 2 Composite photocatalyst, the specific steps are as follows:

[0032] (1) Prepare polystyrene (PS) suspension with 6mL styrene, 0.2mL α-methyl propylene, and 100mL water as raw materials, stir at 80°C for 8 hours, and place the PS suspension in a blast drying oven at 40°C to keep warm After 12h, a block PS template was obtained;

[0033] (2) Configuration of precursor solution A: Weigh a total of 12 g of citric acid, zirconium oxychloride and titanium sulfate according to the mass ratio of 2.6:1:3.7, and dissolve the citric acid, zirconium oxychloride and titanium sulfate In 40ml of deionized water, magnetically stirred for 20min to obtain precursor solution A.

[0034] (3) Configuration of solution B: Calculate the amount of eth...

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Abstract

The invention discloses a TiO2 / ZrTiO4 / SiO2 composite photocatalyst with an inverse opal structure and a preparation method thereof, a precursor is prepared by combining a soft template method and a sol-gel method, a TiO2 / ZrTiO4 / SiO2 precursor solution is prepared by taking PS colloid as a soft template, and the TiO2 / ZrTiO4 / SiO2 composite photocatalyst with the inverse opal structure is obtained through gelation, dipping, drying and heat treatment. According to the invention, the problem that the visible-light-driven photocatalyst ZrTiO4 is difficult to prepare can be solved, and the photocatalytic effect of TiO2 is effectively improved by utilizing a heterostructure.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to an inverse opal structure TiO 2 / ZrTiO 4 / SiO 2 composite photocatalyst. Background technique [0002] TiO 2 , ZrO 2 As a typical n-type semiconductor material, it has a wide range of applications in the fields of photocatalytic degradation, hydrogen production, and material surface self-cleaning. ZrTiO 4 as TiO 2 with ZrO 2 The derivatives of the reaction have excellent catalytic properties and are applied in the field of photocatalytic degradation. But TiO 2 Larger band gap (3.2eV), making the photoresponse range smaller; ZrTiO 4 Also because of its difficulty in preparation, it cannot be widely used. Contents of the invention [0003] In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of inverse opal structure TiO 2 / ZrTiO 4 / SiO 2 Composite photocatalyst and its preparation method ...

Claims

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Application Information

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IPC IPC(8): B01J21/08C02F1/30C02F101/30
CPCB01J21/08C02F1/30C02F2101/308C02F2305/10B01J35/39
Inventor 伍媛婷任森茂李旭徐舒铭
Owner SHAANXI UNIV OF SCI & TECH
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