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Method for preparing metal-phenol network structure coating based on ultrasonic-assisted Fenton technology

A network structure and ultrasonic technology, applied in the direction of coating, etc., can solve the problems of inability to form coatings and limit the selection range of building molecules, and achieve the effects of wide application range, expanded selectivity, and expanded selection range

Active Publication Date: 2021-12-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the formation of the metal-polyphenol network structure coating requires that the building molecule must contain at least one catechol or pyrogallol functional group, which greatly limits the choice of building molecules.
There are many natural functional phenolic compounds (such as resveratrol) in nature, which do not contain multiple ortho phenolic hydroxyl functional groups, and cannot coordinate with metal ions to form a coating

Method used

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  • Method for preparing metal-phenol network structure coating based on ultrasonic-assisted Fenton technology
  • Method for preparing metal-phenol network structure coating based on ultrasonic-assisted Fenton technology
  • Method for preparing metal-phenol network structure coating based on ultrasonic-assisted Fenton technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of Metal-Phenol Network Structure Coating Using Phenol and Ferrous Ion Salt as Building Units

[0041](1) Disperse 100 μL of 5% w / w polystyrene microspheres with a diameter of 3.0-3.9 μm in 1 mL of deionized water, centrifuge at 700 rcf for 3 min, and wash 3 times with deionized water after centrifugation to obtain the treated polystyrene Microspheres;

[0042] (2) Dissolve phenol in deionized water to obtain 2mg mL -1 phenol solution, take 1mL phenol solution, add 4mg ferrous chloride, 100μL treated polystyrene microspheres, ultrasonic treatment for 2 hours, ultrasonic frequency 412kHz, ultrasonic power 40W, ultrasonic temperature 40 ℃;

[0043] (3) After ultrasonication, the sample was centrifuged at 700rcf for 3min, washed 3 times with deionized water, and the transmission electron microscope photos of the obtained particles were shown in figure 1 a. Add 1mL tetrahydrofuran to react for 1 hour, centrifuge at 1500rcf for 3min, and wash with deionized wa...

Embodiment 2

[0045] Preparation of metal-phenolic network structure coating with L-tyrosine and ferrous ion salt as building blocks

[0046] (1) Disperse 100 μL of 5% w / w polystyrene microspheres with a diameter of 3.0-3.9 μm in 1 mL of deionized water, centrifuge at 700 rcf for 3 min, and wash 3 times with deionized water after centrifugation to obtain the treated polystyrene Microspheres;

[0047] (2) Dissolve L-tyrosine in deionized water to obtain 0.4mg mL -1 L-tyrosine solution, take 1mL L -1 Add 1 mg of ferrous chloride and 100 μL of treated polystyrene microspheres to the tyrosine solution, and sonicate for 2 hours; the ultrasonic frequency is 412 kHz, the ultrasonic power is 40 W, and the ultrasonic temperature is 40 ° C;

[0048] (3) After ultrasonication, the sample was centrifuged at 700rcf for 3min, washed 3 times with deionized water, and the transmission electron microscope photos of the obtained particles were shown in figure 2 a. Add 1mL tetrahydrofuran to react for 1 ...

Embodiment 3

[0050] With the preparation method of the metal-phenolic network structure coating described in Example 1, the difference is:

[0051] Replacing phenol with resveratrol, L-tyrosine, hydroquinone, 4-hydroxyphenylacetic acid, 2-(4-hydroxyphenyl)ethanol, or catalase; respectively, to obtain different metal-phenols network-like structure coating.

[0052] For coatings prepared using different compounds containing monophenolic functional groups and ferrous ions as building units, the obtained particles were washed 3 times with water, dispersed in deionized water, and the surface potential was tested with a Zeta potential meter. The test results are shown in image 3 .

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Abstract

The invention relates to a method for preparing a metal-phenol network structure coating based on an ultrasonic-assisted Fenton technology. The method comprises the following steps: soaking a substrate in a solution of a monophenol-structure-containing compound and metal ions, carrying out ultrasonic treatment, and forming the metal-phenol network structure coating on the substrate by utilizing an ultrasonic-Fenton reaction. The method provided by the invention overcomes the defect that the formation of an existing metal-polyphenol network structure requires that a constructed molecule must contain at least one catechol or pyrogallol functional group, any phenol molecule can be coordinated with metal ions to form a stable metal-polyphenol network structure, more functional molecules can be introduced into the surface modification coating, and the formation of the coating is not influenced by the material and shape of the substrate.

Description

technical field [0001] The invention relates to a method for preparing a metal-phenolic network structure coating based on ultrasonic-assisted Fenton technology, and belongs to the technical field of surface coatings. Background technique [0002] Polyphenols are a class of compounds found in plant foods with multiple phenolic hydroxyl functional groups. Natural plant polyphenols mainly include tannins, anthocyanins, catechins, gallic acid, etc., which exist in the leaves, shells, pulp and seed coats of plants. Most polyphenols cannot form a stable coating with a certain thickness by themselves, which limits the functional application of polyphenols to a certain extent. Because polyphenols have many coordinating groups, strong complexing ability, and stable complexes, most metal ions can be used as multi-base ligands to complex with polyphenols to form a stable metal-polyphenol network structure. Due to the rich non-covalent interaction between the metal-polyphenol network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/61C09D7/63
CPCC09D7/61C09D7/63
Inventor 崔基炜梅寒笑高至亮郝京诚
Owner SHANDONG UNIV
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