A kind of preparation method and application of material with friction degradation performance

A performance and composite material technology, applied in the field of preparation of catalyst materials, can solve problems such as direct utilization of triboelectric charge without research, achieve the effects of improving tribocatalytic performance, ensuring water safety, and simple preparation process

Active Publication Date: 2021-07-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, triboelectrification is mostly used in triboelectric nanogenerators, that is, the triboelectric charge is output through an external circuit, but there is no research on the direct use of the triboelectric charge on the surface of the material.

Method used

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  • A kind of preparation method and application of material with friction degradation performance
  • A kind of preparation method and application of material with friction degradation performance
  • A kind of preparation method and application of material with friction degradation performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Zinc nitrate, sodium hydroxide and ferric nitrate are mixed homogeneously with the ratio of 10g:5g:0.2g;

[0032] (2) The mixture is put into a ball mill, and ball milled at 500 rpm for 50 min;

[0033] (3) Dispersing the product into deionized water, performing suction filtration, and washing with deionized water and absolute ethanol in sequence;

[0034] (4) Collect the product and anneal at 200°C to obtain a composite material with friction degradation properties;

[0035] (5) The transmission electron microscope picture of the prepared material is as follows figure 1 , it can be seen that the obtained material is a rod-like structure with a length of about 200nm and a width of about 20nm.

Embodiment 2

[0037] (1) Disperse polyvinylidene fluoride powder into a mixed solvent of acetone and dimethylformamide, the ratio of acetone to dimethylformamide is 3ml:2ml, and the solid-liquid ratio is 1:100 (W / V, mg / ml).

[0038] (2) The mixed solution obtained in step (1) was heated at 80°C for 1 h, and then dispersed by ultrasonication for 2 h.

[0039] (3) Apply the mixed solution obtained in step (2) to a glass plate by drop coating, and dry at 100° C. to obtain a polymer film.

[0040] (4) Disperse the material obtained in Example 1 in the polymer solution in step (2), and the mixing ratio is 10mg: 1ml.

[0041] (5) Apply the mixed solution obtained in step (4) on a glass plate by drop coating, and dry at 100° C. to obtain a polymer composite film.

[0042]The scanning electron microscope images of the prepared polymer films are shown in figure 2 . The atomic force microscope of the prepared polymer film is shown in Figure 3(a), and the atomic force microscope of the polymer c...

Embodiment 3

[0044] (1) Disperse 50 mg of the prepared catalyst material into the EPS solution extracted from the sludge, then put it into a ball mill, and perform ball milling at a speed of 500 rpm.

[0045] (2) Every 30 minutes, take 5ml of the solution from the ball mill, centrifuge to get the supernatant, detect the protein content in the solution by Bradford method, and further analyze it in combination with three-dimensional fluorescence.

[0046] (3) The results of friction degradation of protein in EPS are as follows Figure 4 and Figure 5, from Figure 4 It can be seen from the degradation curve that with the increase of ball milling time, the protein concentration decreased significantly. After 90 minutes of reaction, the protein was basically completely degraded, which proved the effectiveness of the catalytic degradation process. From the three-dimensional fluorescence spectrum in Figure 5, it can be seen that the EPS solution has obvious fluorescence emission peaks in the try...

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Abstract

The invention belongs to the technical field of pollutant treatment in water, and provides a preparation method of a material with friction degradation performance and an application thereof. Using one or both of metal salts and metal oxides together with hydroxide as raw materials, prepare catalytic materials with frictional degradation properties by ball milling or hydrothermal methods, combined with polymer materials, through spin coating, drop coating, etc. method, to obtain a polymer composite film with friction degradation properties, and to further improve the material performance by means of surface morphology modification. The catalytic material prepared by the above method is not only friendly to the environment, but also suitable for the dark light environment of pipelines, and also has the performance of efficiently degrading pollutants in water, and can be widely used in the field of water body environment control.

Description

technical field [0001] The invention belongs to the technical field of pollutant treatment in water, and in particular relates to the preparation and application of a catalyst material with friction degradation performance. [0002] technical background [0003] During the implementation of long-distance water diversion projects, water starts to flow from the water source to the water-demanding area, and often has to go through tens of kilometers, or even a longer distance. Different degrees of deterioration and pollution will occur in the process. There are many reasons for general deterioration: the water source originally carries microorganisms that are easy to cause deterioration, and the water body was not sterilized before transportation. During the transportation process, the microorganisms mutated, resulting in water deterioration. If you buy lower-priced disinfectants to disinfect water bodies in order to save resources, these disinfectants themselves do not meet th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J23/80B01J35/06C02F1/00C08L27/16C08K7/00C08J5/18C02F101/34C02F101/38
CPCB01J23/002B01J23/80B01J31/28B01J35/0013B01J35/065C02F1/00C02F2101/34C02F2101/38C08J5/18C08J2327/16C08K7/00
Inventor 马伟胡璟璐陈振高健章哲万春香
Owner DALIAN UNIV OF TECH
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