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Washable photo-catalytic super-hydrophobic cotton fabric, and preparation and application thereof

A photocatalytic and water-resistant technology, applied in chemical/physical processes, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve high energy consumption, poor durability, cumbersome preparation process, etc. problems, to achieve the effect of expanding the application field, improving the micro-roughness, and high response to visible light

Inactive Publication Date: 2020-06-26
安徽省农业科学院棉花研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention proposes a washable photocatalytic superhydrophobic cotton fabric and its preparation and application, which not only overcomes the shortcomings of superhydrophobic fabric preparation process, high energy consumption, and poor durability, but also makes the obtained cotton fabric washable and photocatalytic.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Washable photo-catalytic super-hydrophobic cotton fabric, and preparation and application thereof
  • Washable photo-catalytic super-hydrophobic cotton fabric, and preparation and application thereof
  • Washable photo-catalytic super-hydrophobic cotton fabric, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of washable photocatalytic superhydrophobic cotton fabric, comprises the steps:

[0043] (1) Add acetone to the round bottom flask until the volume of acetone accounts for one-third of the volume of the round bottom flask, place the cotton fabric in the Soxhlet extractor, and connect the Soxhlet extractor to the above round bottom filled with acetone Connect the flask, then heat it in a water bath at 80°C for 4.5 hours, take it out and dry it;

[0044] (2) Adjust the pH value of 100mL Tris-HCl buffer solution to 8.5, then add 0.1g dopamine to the buffer solution, and then add the cotton fabric after impurity removal, place the system in a water bath at 20°C for 20h, take out and dry .

[0045] (3) Mix ferric nitrate solution with a concentration of 0.055 mol / L and hydrochloric acid with a concentration of 0.005 mol / L, then immerse the dopamine-modified cotton fabric, treat it in a water bath at 50°C for 8 hours, and dry it.

[0046](4) Ult...

Embodiment 2

[0048] A kind of preparation method of washable photocatalytic superhydrophobic cotton fabric, comprises the steps:

[0049] (1) Add acetone to the round bottom flask until the volume of acetone accounts for one-third of the volume of the round bottom flask, place the cotton fabric in the Soxhlet extractor, and connect the Soxhlet extractor to the above round bottom filled with acetone Connect the flask, then heat it in a water bath at 100°C for 5.5 hours, take it out and dry it;

[0050] (2) Adjust the pH value of 100mL Tris-HCl buffer solution to 8.5, then add 0.2g dopamine to the buffer solution, then add the cotton fabric after impurity removal, place the system in a 30°C water bath for 17h, take out and dry .

[0051] (3) Mix ferric sulfate solution with a concentration of 0.074mol / L and hydrochloric acid with a concentration of 0.008mol / L, then immerse the dopamine-modified cotton fabric, treat it in a water bath at 80°C for 5 hours, and dry it.

[0052] (4) Ultrasonic...

Embodiment 3

[0054] A kind of preparation method of washable photocatalytic superhydrophobic cotton fabric, comprises the steps:

[0055] (1) Add acetone to the round bottom flask until the volume of acetone accounts for one-third of the volume of the round bottom flask, place the cotton fabric in the Soxhlet extractor, and connect the Soxhlet extractor to the above round bottom filled with acetone Connect the flask, then heat it in a water bath at 85°C for 5 hours, take it out and dry it;

[0056] (2) Adjust the pH value of 100mL Tris-HCl buffer solution to 8.5, then add 0.15g of dopamine to the buffer solution, then add the cotton fabric after impurity removal, place the system in a water bath at 40°C for 20h, take out and dry .

[0057] (3) Mix ferric chloride hexahydrate solution with a mass fraction of 20 mg / mL and hydrochloric acid with a concentration of 0.01 mol / L, then immerse the dopamine-modified cotton fabric, treat it in a water bath at 60°C for 10 h, and dry it.

[0058] (4...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a washable photo-catalytic super-hydrophobic cotton fabric, wherein a dopamine modified cotton fabric, the surface of which is loaded with beta-FeOOH nano-particles, is used asa carrier; and the surface of the carrier is modified with dodecanethiol. The invention discloses a preparation method of the washable photo-catalytic super-hydrophobic cotton fabric. Dopamine modification processing on the purified cotton fabric is carried out; by taking ferric salt as a precursor, the beta-FeOOH nano-particles grow on the surface of the dopamine fabric in situ; then, a low-surface-energy matter, namely dodecanethiol, is modified on the surface of the rough fabric; and thus, the super-hydrophobic cotton fabric having water resistance and photo-catalytic performance is obtained. The fabric in the invention can completely degrade methylene blue solution within 180 min in visible light; furthermore, the water resistance is good; after circulation for five times, both the stability and the reliability of degrading the methylene blue solution can reach 90%; furthermore, the surface droplet static contact angle of the cotton fabric is greater than 150 DEG C; and, after oilwater separation through different oil, the separation rate is greater than 98%.

Description

technical field [0001] The invention relates to the technical field of cotton fabric modification, in particular to a washable photocatalyzed superhydrophobic cotton fabric and its preparation and application. Background technique [0002] Photocatalytic oxidation is an environmentally friendly technology with simple operation, low cost, and no secondary pollution. It has been widely used to solve the problem of excessive organic pollutants in industrial wastewater. Most of the traditional photocatalysts are affected by ultraviolet rays, and the proportion of ultraviolet rays to solar energy is very small, only about 4%, and the utilization rate of sunlight is very low. Visible light accounts for about 43% of solar light energy, so the research on visible light-driven photocatalysts has attracted the attention and research of many scientists. [0003] The superhydrophobic surface usually refers to the surface with a water contact angle greater than 150° and a very low conta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/37D06M11/49D06M13/252B01J31/28B01D17/022D06M101/06
CPCD06M15/37D06M11/49D06M13/252B01J31/28B01D17/0202D06M2101/06D06M2200/12B01J35/39B01J35/23
Inventor 白雪邓小楠叶泗洪
Owner 安徽省农业科学院棉花研究所
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