Environment-friendly functional copper mesh material as well as preparation method and application thereof

A functional and environmentally friendly technology, applied in the field of materials, can solve the problems of affecting wettability, pollution of organic pollutants, affecting separation performance, etc., and achieve the effect of strong recycling ability, good chemical durability and simple synthesis method.

Pending Publication Date: 2022-05-10
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the long-term separation process of most membrane materials, the surface is inevitably polluted by organic pollutants or the pores are clogged, which affects its wettability and further affects the separation performance.

Method used

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  • Environment-friendly functional copper mesh material as well as preparation method and application thereof
  • Environment-friendly functional copper mesh material as well as preparation method and application thereof
  • Environment-friendly functional copper mesh material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) The preparation method is as follows:

[0037] 1) Wash the original copper mesh (400 mesh, 3cm×3cm, purity 99%) with dilute hydrochloric acid, deionized water, and ethanol by ultrasonic treatment to remove the surface oxide layer and other impurities, and then wash it with deionized water, Vacuum drying at 80°C; then, immerse the obtained copper mesh in 50mL mixed solution containing 1mol·L -1 Sodium dihydrogen phosphate and 1mol L -1 Hydrogen peroxide; after the reaction, take out the copper mesh and wash it three times with deionized water, and dry it in vacuum at 80°C, the surface of the copper mesh is oxidized to form Cu 3 (PO 4 ) 2 Crystal, get Cu 3 (PO 4 ) 2 copper mesh.

[0038] 2) the above Cu 3 (PO 4 ) 2 Copper grid immersed in 25mL 1g·L -1 Soak in polyvinylpyrrolidone methanol solution for 30min, so that the surface of the material is filled with polyvinylpyrrolidone molecules; then add 1.487g zinc nitrate hexahydrate to the system, stir at room...

Embodiment 2

[0047] Example 2 Environment-friendly functionalized material PDMS / ZIF-7@Cu 3 (PO 4 ) 2 Application of Copper Mesh in Adsorbing Oil

[0048] In order to investigate PDMS / ZIF-7@Cu 3 (PO 4 ) 2 The actual application effect of copper mesh adsorption oil simulates the situation of separating oil from oil-water mixture under natural conditions. Selective adsorption experiments were carried out by mixing n-hexane (light oil, stained with Sudan IV) and chloroform (heavy oil, stained with Sudan III) with water, and the results were as follows: Figure 4 .

[0049] Such as Figure 4 In middle (a1~a3), the relative density of n-hexane is small, floating above the water phase, when PDMS / ZIF-7@Cu 3 (PO 4 ) 2 When the copper mesh is in contact with n-hexane, n-hexane quickly penetrates into the copper mesh, so that n-hexane and water are separated to achieve the purpose of collecting oil. Likewise, for heavy oil / water mixtures such as Figure 4 In the middle (b1~b3), the relati...

Embodiment 3

[0050] Example 3 Environment-friendly functionalized material PDMS / ZIF-7@Cu 3 (PO 4 ) 2 Application of Copper Mesh in Separation of Oil-Water Mixture

[0051] 1. In order to investigate PDMS / ZIF-7@Cu 3 (PO 4 ) 2 Copper mesh continuous oil-water separation capability, the separation process is as follows Figure 5 As shown, the PDMS / ZIF-7@Cu 3 (PO 4 ) 2 The copper mesh is sandwiched between two glass tubes, and a clean beaker is placed below the apparatus to collect the organic phase. Pour the oil-water mixture into the glass tube from above to contact PDMS / ZIF-7@Cu 3 (PO 4 ) 2 The copper mesh, through which the organic phase flows down, is collected by the beaker, while the aqueous phase is trapped in the glass tube, thereby achieving oil-water separation. Such as Figure 5 As shown in (a1~a2), heavy oil (dichloromethane, chloroform, carbon tetrachloride) is dyed with Sudan III, mixed with an equal volume of water dyed with methylene blue to form an oil-water mixt...

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Abstract

The invention relates to an environment-friendly functional copper mesh material as well as a preparation method and application thereof. A metal copper net is used as a substrate material, a Cu3 (PO4) 2 crystal micron-scale sheet structure is grown on the surface of the metal copper net in situ by using an oxidation method, and then Zn2 + is adsorbed on the surface of the material by using polyvinylpyrrolidone so as to further grow a ZIF-7 crystal nano-scale sheet structure in situ, so that the surface of the material is of a micro-nano structure; and a polydimethylsiloxane (PDMS) coating is further modified on the surface of the material, so that the surface energy of the material is reduced, and the environment-friendly functional material PDMS / ZIF-7-coated Cu3 (PO4) 2 copper mesh is prepared. The preparation method is simple, the synthetic raw materials do not contain substances harmful to the environment, complex equipment and excessive energy consumption are not needed, and the synthesized material has super-hydrophobicity-super-lipophilicity, excellent oil-water separation capacity and emulsion treatment capacity, excellent physical stability, chemical durability and self-cleaning capacity, and can be used for preparing the oil-water separation emulsion. The method has a wide application prospect in oil-containing wastewater purification.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an environment-friendly functionalized copper mesh material and a preparation method and application thereof. Background technique [0002] Nowadays, marine oil spills pose serious harm to aquatic organisms and pose a huge threat to human development, and have become one of the most urgent environmental problems. Therefore, it is of great significance to develop an efficient and environmentally friendly method to treat oily wastewater. Compared with other traditional separation technologies, membrane separation technology has the advantages of energy saving, simple operation, and environmental protection of equipment, and has been widely used in the field of oil-water separation in recent years. Commonly used membrane separation materials such as metal mesh, polymer membrane, foam, filter paper, and fiber fabric, etc. Among them, metal mesh is selected because of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28C02F1/28C02F1/40B01D17/04B01J20/30B01D17/022
CPCB01J20/0237B01J20/0292B01J20/226B01J20/262B01J20/28011B01D17/0202B01D17/04C02F1/288C02F1/40
Inventor 许旭李响刘桂彬高佳欣魏茜茜刘峻菲张蕾
Owner LIAONING UNIVERSITY
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