Composite screen plate for catalytic decomposition of ozone
By attaching a composite mesh plate with copper oxide and manganese dioxide layers to the porous foam metal matrix, the negative impact of high concentration of ozone on the environment and health is solved, and the efficient catalytic decomposition of ozone is achieved and pollution is reduced.
Patent Information
- Application Number
- CN202422554442.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-22
AI Technical Summary
High concentrations of ozone have negative effects on human health and the environment, and it is necessary to effectively remove residual or escaped ozone to reduce pollution and protect health.
A composite mesh plate with copper oxide layer and manganese dioxide layer attached to a porous foam metal matrix is used to decompose ozone by its large specific surface area and the catalytic action of the catalyst layer.
It has achieved efficient catalytic decomposition of ozone, reduced environmental pollution and protected human health.
Smart Images
Figure CN223276282U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ozone treatment, in particular to a composite mesh plate for catalytically decomposing ozone. Background Art
[0002] Ozone, an allotrope of oxygen, possesses strong oxidizing properties, capable of oxidizing and decomposing pollutants in water. It can also be used for disinfection and sterilization. In chemical production, ozone can replace catalytic oxidation or high-temperature oxidation, simplifying production processes and improving productivity. Despite its many beneficial effects, high concentrations of ozone can negatively impact human health and the environment. For example, ozone can irritate the respiratory tract, cause neurotoxicity, dizziness and headaches, and impair immune function. Furthermore, ozone pollution can affect atmospheric oxidizing properties, potentially damaging crops and forests. Therefore, the rational use of ozone and its removal of residual or escaped ozone are crucial. Utility Model Content
[0003] In response to the above problems, the purpose of this utility model is to provide a composite mesh plate for catalytic decomposition of ozone, which is installed at the rear end of the ozone gas treatment system to efficiently treat the residual ozone released by the system, reduce environmental pollution and protect human health.
[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solution: a composite mesh plate for catalytic decomposition of ozone, which is a porous three-dimensional structure, including a porous foam metal substrate and a catalyst layer attached to the outside of the porous foam metal substrate, the catalyst layer including a copper oxide layer and a manganese dioxide layer, the copper oxide layer attached to the surface of the porous foam metal substrate, and the manganese dioxide layer attached to the surface of the copper oxide layer.
[0005] Furthermore, the metal base material of the porous foam metal matrix is iron, nickel or copper.
[0006] Furthermore, the copper oxide layer is formed by first electroplating copper on the porous foam metal substrate and then subjecting it to oxygen-enriched heat treatment.
[0007] Furthermore, the manganese dioxide layer is formed by dipping the porous foam metal substrate with the copper oxide layer in a manganese nitrate solution and then subjecting it to heat treatment.
[0008] Furthermore, the composite mesh has a thickness of 2.0-30 mm and a pore size of 35-700 μm.
[0009] Furthermore, the composite mesh plate preferably has a thickness of 10-20 mm and a pore size of 300-500 μm.
[0010] Compared with the prior art, the advantages of the present invention are:
[0011] By utilizing the ultra-large specific surface area of the porous metal matrix, a catalyst layer consisting of a copper oxide layer and a manganese dioxide layer is attached to the surface of the metal wire to achieve catalytic decomposition of ozone. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the composite mesh panel of the present invention;
[0013] Figure 2 This is the appearance structure diagram of the composite mesh plate of the utility model;
[0014] In the figure: 1. Porous foam metal substrate, 2. Copper oxide layer, 3. Manganese dioxide layer. DETAILED DESCRIPTION
[0015] The specific implementation of the present invention will be described in further detail below with reference to the accompanying drawings.
[0016] like Figure 1 、 2 As shown, a composite mesh plate for catalytic decomposition of ozone in this embodiment is a porous three-dimensional structure, including a porous foam metal substrate 1 and a catalyst layer attached to the outside of the porous foam metal substrate 1, the catalyst layer including a copper oxide layer 2 and a manganese dioxide layer 3, the copper oxide layer 2 is attached to the surface of the porous foam metal substrate 1, and the manganese dioxide layer 3 is attached to the surface of the copper oxide layer 2.
[0017] The composite mesh plate for catalytic decomposition of ozone in this embodiment is prepared in the following steps:
[0018] 1. A polyurethane sponge substrate with a pore size of 300-500µm is selected. Alkaline chemical nickel plating is first performed on the surface of the polyurethane sponge substrate scarf, followed by electroplating nickel. The semi-finished product after electroplating is incinerated at a temperature of 600-850°C and reduced to form a porous foam metal nickel matrix.
[0019] 2. The porous nickel foam substrate prepared in step 1 is first subjected to alkaline electroplating of copper, and then heat treated in an oxygen-rich environment at 300-500° C. to form a copper oxide layer 2 on the outside of the porous nickel foam substrate.
[0020] 3. The porous nickel foam substrate with the copper oxide layer 2 attached to the outside after the treatment in step 2 is immersed in a manganese nitrate solution, and then the porous nickel foam substrate immersed in the manganese nitrate solution is heat-treated at 200-400° C. to form a manganese dioxide layer 3, thereby obtaining a composite mesh panel;
[0021] like Figure 1 As shown, the composite mesh has a three-layer structure, namely a porous foam metal matrix 1, a copper oxide layer 2, and a manganese dioxide layer 3. Figure 2As shown, the pore size of the composite mesh is between 300-500µm and the thickness is 10-20mm.
[0022] The catalytic decomposition principle of ozone by the composite mesh plate of this utility model is as follows:
[0023] Copper oxide layer 2: On the CuO surface with oxygen vacancies, the reaction energy barrier of ozone decomposition is reduced, making it easier for O3 molecules to adsorb on the CuO surface and accelerating the catalytic decomposition of O3.
[0024] MnO2 layer 3: The surface oxygen vacancies of the MnO2 catalyst can promote the electron transfer between Mn metal ions and ozone, thereby generating active species such as hydroxyl radicals (·OH) and singlet oxygen (10_2), among which hydroxyl radicals play the main degradation role.
[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A composite screen for catalytic decomposition of ozone, characterized in that: The invention is a porous three-dimensional structure, comprising a porous metal foam substrate (1) and a catalyst layer attached to the outside of the porous metal foam substrate (1), wherein the catalyst layer comprises a copper oxide layer (2) and a manganese dioxide layer (3), wherein the copper oxide layer (2) is attached to the surface of the porous metal foam substrate (1), and the manganese dioxide layer (3) is attached to the surface of the copper oxide layer (2).
2. The composite screen for catalytic decomposition of ozone according to claim 1, characterized in that: The metal base material of the porous foam metal matrix (1) is iron, nickel or copper.
3. The composite screen for catalytic decomposition of ozone according to claim 1, characterized in that: The composite mesh plate has a thickness of 2.0-30 mm and a pore size of 35-700 μm.
4. The composite screen for catalytic decomposition of ozone according to claim 1, characterized in that: The composite mesh plate has a thickness of 10-20 mm and a pore size of 300-500 μm.