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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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  • Summary
  • 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 difficulty in recycling, this method uses a new type of mineral (Fengcheng soil) after ultrafine grinding as the carrier, and butyl titanate as the titanium source, and prepares nanocomposite photocatalysts by sol-gel method

Method used

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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

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Embodiment 1

[0052] A method for preparing a nanocomposite photocatalyst, comprising the following steps:

[0053] 1. Use the new minerals analyzed above as raw materials, dry and roast at 250°C for 4 hours to remove organic carbon, and obtain dry mineral powder after breaking up;

[0054] 2. Mix butyl titanate and absolute ethanol at a mass ratio of 1:10, and stir evenly to obtain a butyl titanate solution;

[0055] 3. Mix the mineral powder and butyl titanate in the butyl titanate solution evenly according to the mass ratio of 2:1, add distilled water drop by drop, and stir slowly until the mixed solution is viscous to obtain a gel;

[0056] 4. Place the gel in a blast drying oven for rapid drying at 105°C, then place it in a nitrogen atmosphere furnace for calcination at 400°C for 6 hours, then take it out and break it up to obtain the nanocomposite photocatalyst;

[0057] The electron micrograph of the composite photocatalyst that embodiment 1 obtains is as Figure 5 shown. Among th...

Embodiment 2

[0059] A method for preparing a nanocomposite photocatalyst, comprising the following steps:

[0060] 1. Use the new minerals analyzed above as raw materials, dry and roast at 450°C for 3 hours to remove organic carbon, and obtain dry mineral powder after breaking up;

[0061] 2. Mix butyl titanate and absolute ethanol at a mass ratio of 2:5, and stir evenly to obtain a butyl titanate solution;

[0062] 3. Mix the mineral powder and butyl titanate in the butyl titanate solution evenly at a mass ratio of 1:1, add distilled water drop by drop, and stir slowly until the mixture is viscous and a gel is obtained;

[0063] 4. Place the gel in a blast drying oven for rapid drying at 150°C, then place it in a nitrogen atmosphere furnace for calcination at 600°C for 1 hour, then take it out and break it up to obtain the nanocomposite photocatalyst;

[0064] The electron micrograph of the composite photocatalyst that embodiment 2 obtains is as Image 6 shown. Among them, the particle...

Embodiment 3

[0066] A method for preparing a nanocomposite photocatalyst, comprising the following steps:

[0067] 1. Use the new minerals analyzed above as raw materials, dry and roast at 400°C for 3 hours to remove organic carbon, and obtain dry mineral powder after breaking up;

[0068] 2. Mix butyl titanate and absolute ethanol at a mass ratio of 1:5, and stir evenly to obtain a butyl titanate solution;

[0069] 3. Mix the mineral powder and butyl titanate in the butyl titanate solution evenly according to the mass ratio of 1:0.8, add distilled water drop by drop, and stir slowly until the mixed solution is viscous to obtain a gel;

[0070] 4. Place the gel in a blast drying oven at 120°C for quick drying, then place it in a nitrogen atmosphere furnace for calcination at 500°C for 3 hours, then take it out and break it up to obtain the nanocomposite photocatalyst;

[0071] The electron micrograph of the composite photocatalyst that embodiment 1 obtains is as Figure 7 As shown: the p...

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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
CPCB01J21/18C02F1/32C02F2305/10C02F2101/308B01J35/39B01J35/23B01J35/612B01J35/633B01J35/647
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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