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A kind of intelligent superhydrophobic material and its preparation method and application

A super-hydrophobic and intelligent technology, applied in the field of materials, can solve the problems of polluting the environment, harmful to human health, etc., and achieve the effect of high adsorption efficiency, low production cost, and improved roughness

Active Publication Date: 2021-11-30
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current superhydrophobic / superoleophilic materials are usually modified with harmful drugs such as fluoride during the preparation process, which pollutes the environment and is harmful to human health.

Method used

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  • A kind of intelligent superhydrophobic material and its preparation method and application
  • A kind of intelligent superhydrophobic material and its preparation method and application
  • A kind of intelligent superhydrophobic material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation of a smart superhydrophobic material S-3D-C-BiOCl@MS

[0034] (1) Preparation of S-3D-C-BiOCl@MS

[0035] Weigh 9.70 g of bismuth nitrate pentahydrate and dissolve it in 400 mL of 1 mol / L nitric acid under magnetic stirring conditions. When the bismuth nitrate was completely dissolved, 20 mL of 6 mol / L hydrochloric acid was added dropwise to the beaker and kept stirring for 2 h. After 2 h, the obtained white precipitate was separated with a centrifuge and washed with deionized water until neutral. Subsequently, 50 mL of 99.8% glacial acetic acid was added, left to stand for 4 h, centrifuged and washed with deionized water until neutral, and then dried in an oven at 60 ° C for 12 h to obtain hydroxylated 3D-C- BiOCl microspheres.

[0036] 0.750 g of 3D-C-BiOCl microspheres were weighed and placed in a beaker, and 30 mL of absolute ethanol and 225 μL of APTES were added thereto. The beaker was then placed in a water bath at 60°C for activation, a...

Embodiment 2

[0050] Example 2 Application of smart superhydrophobic material S-3D-C-BiOCl@MS in separation of oil-water mixture

[0051] 1. In order to investigate the practical application of superhydrophobic materials for oil spill cleaning, the situation of separating mixed oil from the mixture under natural conditions was simulated. Selective adsorption experiments were carried out by mixing n-hexane (light oil) and dichloromethane (heavy oil) stained with Sudan III with water, and the results were as follows: Figure 5 . like Figure 5 (a)-(b), the n-hexane phase floats above the water phase. When the material is in contact with it, the n-hexane is absorbed by the sponge under the capillary action, thereby realizing the static separation of n-hexane and water. as a comparison Figure 5 (c)-(d), the dichloromethane phase sinks below the water phase, and when the material is in contact with the dichloromethane, the dichloromethane is quickly sucked into the interior by the sponge, re...

Embodiment 3

[0054] Example 3 Application of intelligent superhydrophobic material S-3D-C-BiOCl@MS in catalytic degradation of water-soluble pollutants or oil-soluble pollutants

[0055] 1. The photocatalytic degradation ability of S-3D-C-BiOCl@MS material to water-soluble pollutants and oil-soluble pollutants was examined. The result is as Figure 8 , Figure 8 (a) Equipment for photocatalytic degradation experiments. Take a piece (1cm×1cm×1cm) of S-3D-C-BiOCl@MS material and place it in a reaction cell filled with 100mL, 10μg / mL, pH=10 methylene blue aqueous solution. The reaction cell system was placed in a dark place for 30 minutes to achieve the self-adsorption-desorption equilibrium of the material to methylene blue. After 30 min, the reaction cell was placed under the irradiation of a 500W xenon lamp to simulate sunlight. Take 4mL of methylene blue solution every 60min of irradiation and measure the content of methylene blue in the solution by ultraviolet spectrophotometer. The...

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Abstract

The invention provides an intelligent responsive superhydrophobic material and its preparation method and application. The preparation method is as follows: completely dissolving bismuth nitrate pentahydrate in nitric acid, adding hydrochloric acid to separate to obtain a white precipitate, adding glacial acetic acid to stand still, washing, and drying Obtain hydroxylated 3D‑C‑BiOCl microspheres; add absolute ethanol and 3‑aminopropyltrimethoxysilane, add MS to stir after activation, and dry to obtain 3D‑C‑BiOCl@MS; Sonic acid and hydrophobic lauric acid were dissolved in absolute ethanol as a modification solution under ultrasonic treatment. Put 3D‑C‑BiOCl@MS into the modification solution and soak at room temperature, take it out and dry it to obtain the target product S‑3D‑C‑BiOCl@ MS. The preparation method of the present invention has low production cost, and the synthesized material has superhydrophobic characteristics, pH responsiveness and photocatalytic degradation ability, and has high adsorption efficiency to oil in the oil-water separation experiment and can degrade pollutants in the photocatalytic degradation pollutant test Very efficient.

Description

technical field [0001] The invention relates to an intelligent superhydrophobic material and its preparation method and application, in particular to a general method for preparing a superhydrophobic material by modifying a base material with superhydrophobic microspheres and surface modification technology, which belongs to the field of material technology. Background technique [0002] With the acceleration of the industrialization process of human society, a large amount of waste water containing organic pollutants discharged in the process of industrial production and crude oil leaked in the process of oil exploration and refining have caused serious pollution to water resources and the ecological environment, leading to global serious environmental damage. Therefore, it is of far-reaching significance to develop an efficient and environmentally friendly method for the treatment and recovery of oily pollutants. The traditional oil-water separation technology is cumberso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01J27/06B01J35/08B01J31/06B01D17/022C02F1/28C02F1/30C02F1/40C02F101/30
CPCB01J20/262B01J20/0259B01D17/0202C02F1/40B01J20/0288C02F1/285C02F1/281C02F1/30B01J20/28002B01J27/06B01J31/069C02F2101/308B01J35/51B01J35/39
Inventor 许旭李响张蕾
Owner LIAONING UNIVERSITY