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Hexagonal nanosheet composite film layer containing array macropores and preparation method of hexagonal nanosheet composite film layer

A composite film layer and hexagonal technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of photocatalyst secondary pollution degradation, low efficiency, etc., and achieve easy recycling and regeneration Recycling, solving secondary pollution, and simple operation

Pending Publication Date: 2022-03-29
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of photocatalyst secondary pollution and degradation inefficiency in the above-mentioned prior art, the present invention aims to provide a hexagonal nanosheet composite film layer containing array macropores and its preparation method. Titanium alkoxide and urea were used as the main raw materials, and hexagonal nanosheets g-C 3 N 4 / TiO 2 Composite film

Method used

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  • Hexagonal nanosheet composite film layer containing array macropores and preparation method of hexagonal nanosheet composite film layer
  • Hexagonal nanosheet composite film layer containing array macropores and preparation method of hexagonal nanosheet composite film layer
  • Hexagonal nanosheet composite film layer containing array macropores and preparation method of hexagonal nanosheet composite film layer

Examples

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Effect test

Embodiment 1

[0047] A method for preparing a hexagonal nanosheet composite membrane layer containing array macropores:

[0048] Step 1: Measure tetrabutyl titanate, diethanolamine and absolute ethanol at a molar ratio of 1:1:24, respectively, 17ml of tetrabutyl titanate, 4.8ml of diethanolamine and 70ml of absolute ethanol, and pour them into a mixing container Stir in medium, the stirring speed is 400rad / min, and the stirring time is 10min, and the mixed solution A is obtained by stirring evenly;

[0049] Step 2, continuously drop 2ml of water into the mixed solution A, the molar ratio of water to tetrabutyl titanate used in step 1 is 2.2:1, the speed of water dripping into the mixed solution A is 15s / drop, and the water is Deionized water;

[0050] Step 3: Add 1.2g of polyethylene glycol 400 after the addition of water dropwise, the molar ratio of polyethylene glycol 400 to tetrabutyl titanate is 0.06:1; stir for 0.5h until uniform and stand for 1h to obtain a sol;

[0051] Step 4: Coa...

Embodiment 2

[0057] A method for preparing a hexagonal nanosheet composite membrane layer containing array macropores:

[0058] Step 1: Measure tetrabutyl titanate, diethanolamine and absolute ethanol at a molar ratio of 1:1:30, respectively, 17ml of tetrabutyl titanate, 4.8ml of diethanolamine and 88ml of absolute ethanol, and pour them into a mixing container Stir in medium, the stirring speed is 400rad / min, and the stirring time is 10min, and the mixed solution A is obtained by stirring evenly;

[0059] Step 2, continuously drop 2ml of water into the mixed solution A, the molar ratio of water to tetrabutyl titanate used in step 1 is 2.2:1, the speed of water dripping into the mixed solution A is 20s / drop, and the water is Deionized water;

[0060] Step 3: Add 1.4g of polyethylene glycol 400 after the addition of water dropwise, the molar ratio of polyethylene glycol 400 to tetrabutyl titanate is 0.07:1; stir for 0.6h until uniform and stand for 0.9h to obtain a sol;

[0061] Step 4: C...

Embodiment 3

[0066] A method for preparing a hexagonal nanosheet composite membrane layer containing array macropores:

[0067] Step 1: Measure tetrabutyl titanate, diethanolamine and absolute ethanol at a molar ratio of 1:1:32, respectively, and pour 17ml of tetrabutyl titanate, 4.8ml of diethanolamine and 93ml of absolute ethanol into a mixing container Stir, the stirring speed is 400rad / min, the stirring time is 10min, and the mixed solution A is obtained by stirring evenly;

[0068] Step 2, continuously drop 2ml of water into the mixed solution A, the molar ratio of water to tetrabutyl titanate used in step 1 is 2.2:1, the speed of water dropping into the mixed solution A is 16s / drop, and the water is Deionized water;

[0069] Step 3: Add 1.6g of polyethylene glycol 400 after the addition of water dropwise, the molar ratio of polyethylene glycol 400 to tetrabutyl titanate is 0.08:1; stir for 0.7h until uniform and stand for 0.8h to obtain a sol;

[0070] Step 4: Coat the obtained sol...

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Abstract

The invention belongs to the technical field of semiconductor composite photocatalytic materials, and relates to a hexagonal nanosheet composite film layer containing array macropores and a preparation method of the hexagonal nanosheet composite film layer. The hexagonal nanosheet composite film layer containing the array macropores is formed by compounding hexagonal nanosheet-shaped carbon nitride and titanium dioxide nanoparticles; the thickness of the hexagonal nanometer sheet-shaped carbon nitride is 10-70 nm, the side length of the hexagonal nanometer sheet-shaped carbon nitride is 70-110 nm, and the composite film layer contains micropores of 0.8-2 nm, mesopores of 2-100 nm and array macropores of 400-1000 nm. The preparation method comprises the following steps: mixing tetrabutyl titanate, diethanol amine and absolute ethyl alcohol; dripping water; adding polyethylene glycol 400; coating on a ceramic wafer and drying; preparing scaly carbon nitride precursor powder from urea; preparing a carbon nitride suspension aqueous solution; and heating, washing and drying the carbon nitride suspension aqueous solution and the substrate film. The method does not need complex equipment and is simple to operate; due to the composite film layer, the photocatalytic degradation performance is improved; and the environmental cost of the photocatalyst in the practical application process is reduced.

Description

technical field [0001] The invention belongs to the technical field of semiconductor composite photocatalytic materials, and in particular relates to a hexagonal nanosheet composite film layer containing array macropores and a preparation method thereof. Background technique [0002] Due to the large population of our country, the demand for dyes and antibiotics in the textile, clothing and medical industries is huge, and the water pollution caused by the sewage discharge of the printing and dyeing industry and the pharmaceutical industry has become an urgent environmental governance problem in our country. The dye wastewater discharged from the printing and dyeing industry contains a large number of complex pollutants such as rhodamine B, bisphenol A and methylene blue. The natural degradation of these pollutants is difficult, the cycle is long, and the degradation efficiency is not high, which seriously affects the nature. water quality. On the other hand, with the gradua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/06B01J35/10
CPCB01J27/24B01J35/59B01J35/60B01J35/39B01J35/64
Inventor 李明春宋明高沈存粮李来时吴玉胜
Owner SHENYANG POLYTECHNIC UNIV
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