Nano composite photocatalyst and preparation method thereof

A nanocomposite and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low light utilization rate and difficult recycling, so as to improve catalytic efficiency and be suitable for large-scale Large-scale industrial production, the effect of simple preparation method

Pending Publication Date: 2021-12-24
江西省矿产资源保障服务中心 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a nanocomposite photocatalyst and preparation method thereof, to solve the problem of nanoscale TiO 2 To solve the problem of low light utilization rate and diff

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  • Nano composite photocatalyst and preparation method thereof
  • Nano composite photocatalyst and preparation method thereof
  • Nano composite photocatalyst and preparation method thereof

Examples

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Example Embodiment

[0051] Example 1

[0052] A method for preparing nano composite photocatalyst, comprising the steps of:

[0053] 1, the above analysis is novel mineral material, dried and then calcined at 250 ℃ 4h, organic carbon removal, after break up of dried mineral powder obtained;

[0054] 2, the butyl titanate and ethanol at a mass ratio of 1:10, stir to obtain a solution of tetrabutyl titanate;

[0055] 3, the mineral powder with butyl titanate, butyl titanate in the solution at a mass ratio of 2: 1 mixed, to which distilled water was added dropwise, and stirred slowly until a viscous mixture, to obtain a gel;

[0056] 4, the gel was placed in a drying oven at 105 deg.] C dry rapidly, and then placed under a nitrogen atmosphere furnace taken after 400 ℃ calcined 6h break, to obtain the nanocomposite photocatalyst;

[0057] Electron micrograph obtained in Example 1 composite photocatalyst such as Figure 5 Indicated. Wherein the titanium dioxide particle size of about 50 nm, a good adhesion...

Example Embodiment

[0058] Example 2

[0059] A method for preparing nano composite photocatalyst, comprising the steps of:

[0060] 1, the above novel mineral analysis of raw materials, dried and then calcined at 450 ℃ 3h, remove organic carbon, the resulting dried mineral powder break up;

[0061] 2, the butyl titanate and ethanol in a 2: 5 by mass ratio mixture, stir to obtain a solution of tetrabutyl titanate;

[0062] 3, the mineral powder with butyl titanate, butyl titanate in the solution at a mass ratio of 1: 1 mixed, to which distilled water was added dropwise, and stirred slowly until a viscous mixture, to obtain a gel;

[0063] 4, the gel was placed in a drying oven at 150 deg.] C dry rapidly, and then placed under a nitrogen atmosphere furnace removed after calcining at 600 ℃ 1h break, to obtain the nanocomposite photocatalyst;

[0064] Electron micrograph of composite obtained in Example 2 as a photocatalyst Image 6 Indicated. Wherein the particle size of the titanium dioxide to about 45...

Example Embodiment

[0065] Example 3

[0066] A method for preparing nano composite photocatalyst, comprising the steps of:

[0067] 1, the above analysis is novel mineral material, dried and then calcined at 400 ℃ 3h, remove organic carbon, the resulting dried mineral powder break up;

[0068] 2, the butyl titanate and ethanol in a 1: 5 ratio by mass were mixed uniformly stirred to obtain a solution of tetrabutyl titanate;

[0069] 3, the mineral powder with butyl titanate, butyl titanate in the solution at a mass ratio of 1: 0.8 mixed, to which distilled water was added dropwise, and stirred slowly until a viscous mixture, to obtain a gel;

[0070] 4, the gel was placed in a drying oven at 120 deg.] C dry rapidly, removed and then placed in a nitrogen atmosphere furnace break after firing 3h 500 ℃, to obtain the nanocomposite photocatalyst;

[0071] Electron micrograph obtained in Example 1 composite photocatalyst such as Figure 7 : Wherein the particle size of the titanium dioxide to about 55nm, g...

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Abstract

The invention discloses a nano composite photocatalyst which comprises the following components: silicon dioxide, carbon and titanium dioxide, the mass ratio of silicon dioxide to carbon to titanium dioxide is 4: (0.5-1): (0.5-1), titanium dioxide and carbon are loaded on silicon dioxide, and the particle size of titanium dioxide particles is about 45-55nm. According to the preparation method, novel minerals are used as raw materials, the novel minerals comprise crystalline components and amorphous components, the crystalline components account for 78.61% of the mineral mass fraction, and the amorphous components account for 21.39% of the mineral mass fraction; the crystalline components comprise quartz, pyrite, kaolinite and mica, and the quartz accounts for 91% of the mass fraction of the crystalline component; the amorphous components comprise water, elemental carbon and an organic matter, and the elemental carbon accounts for 95.1% of the mass fraction of the amorphous component; and the preparation process comprises the following steps: roasting novel minerals to remove organic matters, and performing wet grinding; and then mixing with an absolute ethyl alcohol solution of butyl titanate, and then drying and calcining.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials and nanocomposite photocatalysts, in particular to a nanocomposite photocatalyst and a preparation method thereof. Background technique [0002] With the rapid development of the industrial age, the organic pollutants in the air and water have also increased, thus bringing a series of environmental problems. Water resources play a vital role in the development of human beings, but fresh water resources only account for a small part of the earth's natural water. my country's industrial water consumption is much higher than that of developed countries, and the pollution of water bodies is very serious. Therefore, it is of great significance to find an environmentally friendly, low-cost, simple and efficient pollutant treatment method. TiO 2 Photocatalysis has been proved to be a method that can effectively treat organic pollutants in air and water. It has the advantages of...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J35/10C02F1/32
CPCB01J21/18B01J35/004B01J35/0013B01J35/1009B01J35/1038B01J35/1061C02F1/32C02F2305/10C02F2101/308
Inventor 王先广帅欢杜高翔刘莉万新
Owner 江西省矿产资源保障服务中心
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