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Bimetal microelectrode antibacterial material and preparation method thereof, bimetal microelectrode-carbon-based material composite antibacterial material and water treatment device

A technology of antibacterial materials and carbon-based materials, which is applied in the field of water treatment, can solve the problems of unresolved disinfection by-product residues, invalid filtering effect, and non-bactericidal properties, so as to prevent and control microbial pollution of water bodies, prolong service life, and use long life effect

Pending Publication Date: 2022-05-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disinfection method is to directly kill microorganisms in water through physical or chemical methods. Physical methods require additional equipment for disinfection such as ultraviolet lamps, ultrasonic sterilizers, etc., which are costly and will face pollution risks once disinfection is stopped; chemical The method needs to add chemical substances such as chlorine, ozone, etc., which will introduce new pollution sources, and at the same time, the residual problem of disinfection by-products cannot be solved.
Filtration method is to adsorb and intercept microorganisms and pollutants in water through filter media. Sand, gravel, charcoal and diatomaceous earth are often used as filter media, but these filter media themselves are not bactericidal, and the microorganisms adsorbed by them are usually killed. It is fixed on the surface of the material and cannot be removed. After a period of use, the accumulation of microorganisms will lead to the failure of the filtration effect, and even conversely pollute the water body

Method used

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  • Bimetal microelectrode antibacterial material and preparation method thereof, bimetal microelectrode-carbon-based material composite antibacterial material and water treatment device
  • Bimetal microelectrode antibacterial material and preparation method thereof, bimetal microelectrode-carbon-based material composite antibacterial material and water treatment device
  • Bimetal microelectrode antibacterial material and preparation method thereof, bimetal microelectrode-carbon-based material composite antibacterial material and water treatment device

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preparation example Construction

[0050] The application also provides a preparation method of the bimetallic microelectrode bacteriostatic material, comprising:

[0051] The silver-containing layer and the ruthenium-containing layer are sequentially electrochemically deposited on the surface of the substrate.

[0052] It should be noted that the silver-containing layer obtained by electrochemical deposition includes silver element and silver ions, and the ruthenium-containing layer includes ruthenium element, ruthenium ion (ruthenium chloride), and ruthenium oxide (ruthenium dioxide).

[0053] In an optional embodiment, the conditions for electrochemically depositing the silver-containing layer include:

[0054] The stirring rate is 10rmp-200rmp, the pH of the system is 8-10, and the current density is 0.2mA / cm 2 -1.5mA / cm 2 , the temperature is 20°C-40°C;

[0055] Optionally, in the conditions for electrochemically depositing the silver-containing layer, the stirring rate may be 10rpm, 20rpm, 30rpm, 40rpm...

Embodiment 1

[0071] This embodiment provides a bimetallic microelectrode antibacterial material, which includes a base material of 304L stainless steel and a silver-containing layer and a ruthenium-containing layer arranged on the surface thereof. Its specific preparation method is as follows:

[0072] Put the 40-mesh 304L stainless steel mesh in the silver-plating working solution, and use the electrochemical deposition method to deposit silver on the surface of the stainless steel parts. During the electrodeposition process, it is continuously stirred at a speed of 50rpm, the pH is 10.0, and the current density range is 1mA / cm 2 , the temperature is 25°C, and the deposition time is 1min;

[0073] The stainless steel mesh deposited with metal silver is fully rinsed and dried, and the electrochemical deposition is continued, and metal ruthenium is deposited on the surface of the silver deposition layer. The ruthenium deposition solution is a mixed solution of ruthenium chloride, sulfamic a...

Embodiment 2

[0078] This embodiment provides a bimetallic microelectrode antibacterial material, which includes a base material of 304L stainless steel and a silver-containing layer and a ruthenium-containing layer arranged on the surface thereof. Its specific preparation method is as follows:

[0079]Put the 40-mesh 304L stainless steel mesh in the silver-plating working solution, and use the electrochemical deposition method to deposit silver on the surface of the stainless steel parts. During the electrodeposition process, it is continuously stirred at a speed of 50rpm, the pH is 10.0, and the current density range is 1mA / cm 2 , the temperature is 25°C, and the deposition time is 1min;

[0080] The stainless steel mesh deposited with metal silver is fully rinsed and dried, and the electrochemical deposition is continued, and metal ruthenium is deposited on the surface of the silver deposition layer. The ruthenium deposition solution is a mixed solution of ruthenium chloride, sulfamic ac...

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Abstract

The invention provides a bimetallic microelectrode antibacterial material and a preparation method thereof, a bimetallic microelectrode-carbon-based material composite antibacterial material and a water treatment device. The bimetallic microelectrode antibacterial material comprises a base material, a silver-containing layer and a ruthenium-containing layer, the silver-containing layer is arranged on the surface of the base material, and the ruthenium-containing layer is arranged on the surface of the silver-containing layer. The preparation method of the bimetallic microelectrode antibacterial material comprises the step of sequentially and electrochemically depositing the silver-containing layer and the ruthenium-containing layer on the surface of the base material. The bimetallic microelectrode-carbon-based material composite antibacterial material comprises a bimetallic microelectrode antibacterial material and a carbon-based material. The water treatment device comprises the bimetallic microelectrode-carbon-based material composite antibacterial material. The bimetal microelectrode-carbon-based material composite antibacterial material provided by the invention can actively and continuously release active oxygen sterilization substances, so that the efficient and lasting antibacterial effect and adsorption effect are achieved. The water treatment agent is applied to various water treatment environments and does not pollute water bodies and environments.

Description

technical field [0001] The present application relates to the field of water treatment, in particular to a bimetallic microelectrode bacteriostatic material and a preparation method thereof, a bimetallic microelectrode-carbon-based material composite bacteriostatic material and a water treatment device. Background technique [0002] Water is an indispensable substance for sustaining life and a strategic resource for the sustainable development of society. However, the World Health Organization reports that around 2.5 billion people lack access to safe and sanitary water. For underdeveloped areas, the lack of water resources and the deterioration of water quality caused by pathogenic microorganisms threaten the water ecosystem and health and survival problems in related areas. The primary cause of most waterborne disease outbreaks is infection associated with microbial contamination. To date, more than 1,400 contaminants (including bacteria, viruses, parasitic protozoa, and...

Claims

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Application Information

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IPC IPC(8): C02F1/467C02F1/461
CPCC02F1/467C02F1/4672C02F1/4676C02F1/46109C02F2001/46138C02F2303/04
Inventor 葛岩戚震辉姚纪政刘静仪
Owner NORTHWESTERN POLYTECHNICAL UNIV