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Copper hydroxide film for oil-water separation and preparation method thereof

A copper hydroxide, oil-water separation technology, applied in separation methods, chemical instruments and methods, liquid separation and other directions, can solve the problems of long synthesis cycle, expensive preparation raw materials, environmental pollution, etc., and achieves low preparation method cost and high separation efficiency. Quantity and separation efficiency, the effect of simple preparation process

Pending Publication Date: 2022-03-04
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, during the preparation process of organic polymer membranes, fluorine-containing substances are added to improve its hydrophobic properties, and the introduction of fluorine elements causes certain pollution to the environment during the preparation process.
On the other hand, compared with organic polymer membranes, inorganic molecular sieve membranes have good hydrothermal and chemical stability, and can adapt to complex separation systems, but their preparation raw materials are expensive and the synthesis cycle is long, and it is also difficult to apply them in industrial production on a large scale.

Method used

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  • Copper hydroxide film for oil-water separation and preparation method thereof
  • Copper hydroxide film for oil-water separation and preparation method thereof
  • Copper hydroxide film for oil-water separation and preparation method thereof

Examples

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preparation example Construction

[0030] The invention provides a kind of preparation method of the copper hydroxide membrane that is used for oil-water separation, comprises the following steps:

[0031] Will K 2 S 2 o 8 The aqueous solution and the NaOH solution are mixed until clarified to obtain a mixed solution A;

[0032] Immerse the copper grid in the mixed solution A, take it out and dry it to obtain the copper hydroxide film for oil-water separation.

[0033] In the present invention, the copper hydroxide film used for oil-water separation is preferably prepared by an in-situ growth method at room temperature.

[0034] In the present invention, the K 2 S 2 o 8 The concentration of the aqueous solution is 2.0×10 -4 ~3.0×10 -4 mol / L, preferably 2.5×10 -4 mol / L.

[0035] In the present invention, the concentration of the NaOH solution is 4.0×10 -3 ~6.0×10 -3 mol / L, preferably 5.0×10 -3 mol / L.

[0036] In the present invention, the K 2 S 2 o 8 The volume ratio of the aqueous solution to t...

Embodiment 1

[0043] Cu(OH) 2 Membrane preparation:

[0044] 1) will K 2 S 2 o 8 Dissolved in distilled water to make a concentration of 2.5×10 -4 K in mol / L 2 S 2 o 8 Aqueous solution, dissolving NaOH in distilled water to make a concentration of 5.0×10 -3 mol / L NaOH solution; at room temperature, quickly add NaOH solution with a volume ratio of 1:1 to K 2 S 2 o 8 In the aqueous solution, stir rapidly until the solution is clear;

[0045] 2) Dip the 200-mesh red copper mesh into 1M hydrochloric acid, acetone and distilled water and ultrasonically clean it at 100W for 5 minutes, then dry it at room temperature;

[0046] 3) Immerse the cleaned copper mesh in the clear solution, take it out after 30 minutes, and dry it at room temperature to obtain Cu(OH) 2 membrane.

[0047] Cu(OH) 2 Membrane separation performance test for hexane / water mixed system:

[0048] 1) Mix 10 mL of hexane that has been colored by iodine and 20 mL of deionized water to make an oil-water mixture solution...

Embodiment 2

[0054] Cu(OH) 2 Membrane preparation:

[0055] 1) will K 2 S 2 o 8 Dissolved in distilled water to make a concentration of 2.5×10 -4 K in mol / L 2 S 2 o 8 Aqueous solution, dissolving NaOH in distilled water to make a concentration of 5.0×10 -3 mol / L NaOH solution; at room temperature, quickly add NaOH solution with a volume ratio of 1:1 to K 2 S 2 o 8 In the aqueous solution, stir rapidly until the solution is clear;

[0056] 2) Dip the copper mesh with a mesh number of 200 into 2M hydrochloric acid, acetone and distilled water, ultrasonically clean it at 100W for 8 minutes, and then dry it at room temperature;

[0057] 3) Immerse the cleaned copper mesh in the clear solution, take it out after 20 minutes, and dry it at room temperature to obtain Cu(OH) 2 membrane.

[0058] Cu(OH) 2 Membrane separation performance test for n-heptane / water mixed system:

[0059] 1) Mix 10mL of n-heptane and 20mL of deionized water to make a mixed solution of oil and water.

[00...

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Abstract

The invention provides a copper hydroxide film for oil-water separation and a preparation method thereof, and belongs to the technical field of metal film materials. The copper hydroxide film for oil-water separation comprises a metal net and Cu (OH) 2 nanoneedles growing on the surface of the metal net, the copper hydroxide film is prepared through a room-temperature in-situ growth method, and the copper hydroxide film is obtained after the pretreated metal net is soaked in a mixed solution of a K2S2O8 aqueous solution and a NaOH solution to react. The preparation of the Cu (OH) 2 nanoneedles on the metal net is realized, the optional morphology structure for oil-water separation is increased, the copper hydroxide film has high separation flux and separation efficiency for hexane, n-heptane, n-hexane, cyclohexane and other oils, the preparation process of the film is simple and convenient, the preparation method is low in cost, and industrial production application is easy to realize.

Description

technical field [0001] The invention relates to the technical field of metal film materials, in particular to a copper hydroxide film for oil-water separation and a preparation method thereof. Background technique [0002] With the rapid development of the modern economy, the consumption of water resources is increasing, and the pollution problems that follow are also becoming more and more serious. Among them, crude oil leakage and the discharge of oily wastewater in production and life have threatened aquatic organisms and human health. Therefore, the oil-water separation technology for oily wastewater has attracted widespread attention. [0003] Membrane separation technology is widely used in the process of modern chemical separation because of its low operating cost, easy operation, energy saving and environmental protection. The membrane material based on the special wettability of the surface can realize the efficient separation of oil and water two phases, avoiding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D71/02B01D69/02B01D61/38C02F1/44C02F1/40C02F101/32
CPCB01D71/022B01D71/02B01D67/0044B01D69/02B01D61/38C02F1/40C02F1/44C02F2101/32
Inventor 王政唐文龙
Owner NINGXIA UNIVERSITY
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