Durable super-hydrophobic metal organic framework sponge material as well as preparation method and application thereof

A metal-organic framework, super-hydrophobic technology, applied in separation methods, alkali metal compounds, general water supply conservation, etc., can solve problems such as environmental pollution and human health hazards, and achieve high separation efficiency, high adsorption efficiency, and low production costs. Effect

Pending Publication Date: 2022-05-27
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Durable super-hydrophobic metal organic framework sponge material as well as preparation method and application thereof
  • Durable super-hydrophobic metal organic framework sponge material as well as preparation method and application thereof
  • Durable super-hydrophobic metal organic framework sponge material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 A durable superhydrophobic metal-organic framework material UiO-66-(OH) 2 Preparation of @STA@MS

[0032] (1) Preparation of UiO-66-(OH) 2 @STA@MS

[0033] Synthesis of UiO-66-(OH) by a simple hydrothermal method 2 sponge. 90mg ZrCl 4 and 90mg C 8 H 6 O 6 Dissolve in 50 mL DMF and sonicate for 30 minutes. Then, the melamine sponge was washed with ethanol and water, dried, cut into small pieces of 2 cm × 2 cm × 1 cm, and fully immersed in the above homogeneous solution. Subsequently, the above mixture was poured into a 100 mL Teflon-lined autoclave, and the reaction was sealed in an oven at 100 °C for 24 hours. After the reaction kettle was naturally cooled to room temperature, the resulting pale yellow UiO-66-(OH) was washed with DMF and acetone 2 The sponge was modified several times and dried in a vacuum oven at 80 °C for 12 hours to prepare UiO-66-(OH) 2 @MS.

[0034]Dissolve 0.568gSTA and 225μL KH-540 in 30mL ethanol, activate the solution at 6...

Embodiment 2

[0042] Example 2 Superhydrophobic metal organic framework material UiO-66-(OH) 2 Application of @STA@MS in Separation of Oil-Water Mixtures

[0043] 1. UiO-66-(OH) was investigated 2 Saturated adsorption capacities of @STA@MS materials for two oils (soybean oil, motor oil) and organic solvents (dichloromethane, chloroform, toluene, n-hexane). The result is as Figure 3A . Depend on Figure 3A Visible, UiO-66-(OH) 2 The saturated adsorption capacity of the @STA@MS material for different oils and organic solvents is as high as 20.583-57.922 times its own mass, with a high adsorption capacity.

[0044] 2. UiO-66-(OH) was investigated 2 Number of cycles of @STA@MS material. After the material has saturated adsorption of different types of oils or organic solvents, the material is gently squeezed to discharge a large amount of adsorbed oil or organic solvent, and then the material is washed and dried with absolute ethanol to achieve controllable desorption. , and then redo ...

Embodiment 3

[0047] Example 3 Superhydrophobic metal organic framework material UiO-66-(OH) 2 Investigation of the mechanical stability of @STA@MS

[0048] 1. Examined UiO-66-(OH) 2 Mechanical stability of @STA@MS materials. like Image 6 As shown in a, for UiO-66-(OH) 2 Tensile experiments on @STA@MS materials; e.g. Image 6 As shown in b, for UiO-66-(OH) 2 Torsional experiments on @STA@MS materials; e.g. Image 6 As shown in c, for UiO-66-(OH) 2 Pressing experiments with @STA@MS materials; such as Image 6 d, for UiO-66-(OH) 2 Wear experiments on @STA@MS materials. Each experiment was repeated several times, UiO-66-(OH) 2 The contact angle of the @STA@MS material can still be maintained above 150°, and the oil-water separation efficiency can still be maintained above 90%.

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Abstract

The invention relates to the technical field of super-hydrophobic materials, in particular to a durable super-hydrophobic metal organic framework sponge material and a preparation method and application thereof. The problems that an existing method for preparing the super-hydrophobic material is high in production cost and single in function, and poisonous and harmful reagents are used are solved, and the method is applied to oil-water separation. The preparation method comprises the following steps: dissolving ZrCl4 and C8H6O6 in DMF (Dimethyl Formamide), stirring, cleaning melamine sponge, and immersing the cleaned melamine sponge in the solution; pouring into a high-pressure reaction kettle, reacting at high temperature, cooling to room temperature, washing the UiO-66-(OH) 2 modified sponge with DMF and acetone for multiple times, and carrying out vacuum drying; immersing the UiO-66-(OH) 2 modified sponge into a stearic acid ethanol solution containing a certain amount of 3-aminopropyltrimethoxysilane, keeping for a certain time, taking out, and drying to obtain a target product.

Description

technical field [0001] The invention relates to the technical field of super-hydrophobic materials, in particular to a durable super-hydrophobic metal-organic framework sponge material and a preparation method and application thereof. Background technique [0002] The increasingly serious environmental pollution is a serious threat to the sustainable development of human society. Among various environmental problems, water pollution is a serious problem. Petroleum hydrocarbon products are by far the world's primary energy source. In the oil industry, oil spills and oil spills often occur during offshore oil extraction and oil transportation. This severe water pollution threatens the health of human beings, including the rest of the world. Therefore, the treatment of industrial oily wastewater and the separation of oil spills from water have become a worldwide challenging task. The world spends more than $10 billion annually on oil spill cleanup. Conventional cleaning me...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D17/022
CPCB01J20/226B01J20/265B01J20/28011B01J20/3042B01D17/0202Y02A20/204
Inventor许旭刘桂彬李响高佳欣张蕾
OwnerLIAONING UNIVERSITY