CN-121971994-A - Anode material capable of self-generating manganese series catalytic material to remove formaldehyde

CN121971994ACN 121971994 ACN121971994 ACN 121971994ACN-121971994-A

Abstract

The application relates to the technical field of formaldehyde removal materials, in particular to an anode material capable of removing formaldehyde by self-generating manganese series catalytic substances, which comprises an iron-based alloy and not less than 2% of manganese simple substance, wherein a manganese dioxide catalytic film layer can be automatically generated on the surface of an anode in the electrolytic process, and the film layer can realize self-repair under the condition of continuing electrolytic work or contacting oxygen after being damaged. In the electrolytic working process in water, the surface of the anode spontaneously generates a manganese dioxide catalytic film layer, and the film layer has excellent electrocatalytic activity, so that the reaction rate and the thoroughness of formaldehyde oxidation can be obviously improved. Compared with the traditional anode without catalytic activity or with a surface-fixed coating catalytic layer, the material can continuously maintain high catalytic efficiency, and ensures that formaldehyde is efficiently converted into harmless carbon dioxide and water under lower energy consumption.

Inventors

SUN JIAN
ZHU QICHENG

Assignees

中科智汇新材料(深圳)有限公司

Dates

Publication Date: 20260505
Application Date: 20260122

Claims (4)

1. The anode material capable of automatically generating the manganese-based catalytic material to remove formaldehyde is characterized by comprising an iron-based alloy and not less than 2% of manganese simple substance, wherein a manganese dioxide catalytic film layer can be automatically generated on the surface of an anode in the electrolytic process, and the film layer can be automatically repaired under the condition of continuing electrolytic work or contacting oxygen after being damaged.
2. The anode material capable of removing formaldehyde from a self-generating manganese catalyst according to claim 1, wherein the manganese dioxide catalytic film layer is continuously present in the electrolysis process, so that the electrochemical oxidation efficiency of formaldehyde is remarkably improved.
3. The anode material capable of removing formaldehyde from the manganese-based catalyst according to claim 2, wherein the iron-based alloy adopts the same processing technology as that of a common iron alloy, and comprises at least one of casting, cutting and stamping, and the processing mode is simple, so that the anode material is suitable for mass production.
4. An anode material for removing formaldehyde from manganese-based catalyst according to claim 3, wherein the manganese dioxide catalyst film layer formed by electrolysis of the iron-based alloy is self-repairing by continued operation or contact with oxygen after being damaged.

Description

Anode material capable of self-generating manganese series catalytic material to remove formaldehyde Technical Field The application relates to the technical field of formaldehyde removal materials, in particular to an anode material capable of removing formaldehyde by self-generating manganese series catalytic substances. Background Formaldehyde, a toxic volatile organic compound widely present in finishing materials (e.g., glues, paints, boards, coatings, etc.), has been listed as a class 1 carcinogen by the international cancer research institution for 2004 as a serious threat to human health. Because of its ubiquitous and long release period in indoor environments, traditional methods of ventilation, adsorption, etc. are difficult to purify continuously and efficiently. At present, the electrochemical method has been studied to degrade formaldehyde, absorb the formaldehyde into an aqueous solution through a water curtain system, then electrolyze the aqueous solution, and finally convert the aqueous solution into harmless carbon dioxide. However, the key constraint factor of the method is that the anode material is high in cost of a common noble metal electrode, the common metal or carbon-based electrode is low in catalytic efficiency and poor in stability, and the surface catalytic layer is easy to consume and fall off, so that the high-efficiency degradation performance cannot be maintained for a long time. Therefore, the invention provides an anode material capable of removing formaldehyde by self-generating manganese series catalytic substances. Disclosure of Invention Aiming at the defects of the prior art, the application aims to solve the technical problems by using an anode material capable of self-generating manganese catalyst to remove formaldehyde. The anode material capable of removing formaldehyde from the self-generating manganese catalyst comprises an iron-based alloy and not less than 2% of manganese simple substance, wherein a manganese dioxide catalytic film layer can be automatically generated on the surface of the anode in the electrolytic process, and the film layer can realize self-repairing under the condition of continuous working or oxygen contact after being damaged. By adopting the technical scheme, in the working process of electrolysis in water, the manganese dioxide catalytic film layer is spontaneously generated on the surface of the anode, and the film layer has excellent electrocatalytic activity, so that the reaction rate and the thoroughness of formaldehyde oxidation can be obviously improved. Compared with the traditional anode without catalytic activity or with a surface-fixed coating catalytic layer, the material can continuously maintain high catalytic efficiency, and ensures that formaldehyde is efficiently converted into harmless carbon dioxide and water under lower energy consumption. Meanwhile, when the anode material is used for a long time or is subjected to local damage of a catalytic layer caused by physical scraping, water flow scouring and the like, the exposed ferromanganese alloy substrate can regenerate a manganese dioxide film layer in an electrolytic environment to realize self-repairing of a catalytic function, and the self-repairing mechanism ensures that the electrode can keep catalytic activity for a long time without manual maintenance, replacement or regeneration activation, thereby greatly improving the service life of the material and the running stability of a system Furthermore, the manganese dioxide catalytic film layer continuously exists in the electrolysis process, so that the electrochemical oxidation efficiency of formaldehyde is obviously improved. By adopting the technical scheme, the manganese dioxide catalytic film on the surface of the anode is not a static coating, but is dynamically formed and maintained in the electrolytic process. The catalyst ensures that the catalytic active center is always in a high-efficiency state, and avoids the problem of performance attenuation caused by poisoning, sintering or falling of the traditional fixed catalyst, thereby continuously ensuring the high-efficiency oxidation of formaldehyde. The material in the application can be directly embedded into the existing 'water curtain absorption-electrolysis' purification system without complex modification of the system structure. The whole purifying process only consumes electric energy, finally decomposes formaldehyde into nontoxic carbon dioxide and water, has no secondary pollution, and is an efficient and clean green treatment technology. Furthermore, the iron-based alloy adopts the same processing technology as that of the common iron alloy, and comprises at least one of casting, cutting and stamping, and the processing mode is simple and is suitable for large-scale production. By adopting the technical scheme, the electrode material can directly utilize the existing mature metal material processing equipment and production line, does not need t