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Persistent high-efficiency air purifying agent and preparation method thereof

A high-efficiency air and purifying agent technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as narrow-band visible light response

Inactive Publication Date: 2019-09-06
何雯倩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Zinc ferrite has a relatively narrow bandwidth of 1.96 eV and a strong visible light response, which is an excellent photocatalyst in theory, but its photocatalytic activity is inhibited by the rapid recombination of photogenerated electron-hole pairs, so it needs to be combined with Other materials are used together to improve its catalytic efficiency

Method used

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  • Persistent high-efficiency air purifying agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A long-lasting high-efficiency air purifier, prepared from active manganese dioxide material and zinc ferrite;

[0066] The steps of the method for preparing the active manganese dioxide material are as follows:

[0067] (1) With manganese foil as the working electrode and stainless steel plate as the counter electrode, the electrochemical oxidation reaction is carried out in the electrolyte, and the current density is 3mA / cm 2 , The electrochemical oxidation reaction time is 2 hours, the product is suspended in the electrolyte, the electrolyte is passed through a 300-mesh sieve, and dried at 60°C for 12 hours to obtain Intermediate A;

[0068] The electrolyte is an inorganic salt aqueous solution;

[0069] The inorganic salt is sodium chloride and sodium sulfate;

[0070] The concentration of sodium chloride is 0.25mol / L, and the concentration of sodium sulfate is 0.60mol / L;

[0071] (2) Intermediate A is heated from room temperature to 500°C and kept for 3 hours at a heating rat...

Embodiment 2

[0076] A long-lasting high-efficiency air purifier, prepared from active manganese dioxide material and zinc ferrite;

[0077] The steps of the method for preparing the active manganese dioxide material are as follows:

[0078] (1) With manganese foil as the working electrode and stainless steel plate as the counter electrode, the electrochemical oxidation reaction is carried out in the electrolyte, and the current density is 3mA / cm 2 , The electrochemical oxidation reaction time is 2 hours, the product is suspended in the electrolyte, the electrolyte is passed through a 300-mesh sieve, and dried at 60°C for 12 hours to obtain Intermediate A;

[0079] The electrolyte is an inorganic salt aqueous solution;

[0080] The solvent of the electrolyte is glycerin, and the solute is ammonium fluoride and water;

[0081] The mass ratio of the ammonium fluoride: water: glycerin is 0.5:1:100;

[0082] (2) Intermediate A is heated from room temperature to 500°C and kept for 3 hours at a heating rate...

Embodiment 3

[0087] A long-lasting high-efficiency air purifier, prepared from active manganese dioxide material and zinc ferrite;

[0088] The steps of the method for preparing the active manganese dioxide material are as follows:

[0089] (1) With manganese foil as the working electrode and stainless steel plate as the counter electrode, the electrochemical oxidation reaction is carried out in the electrolyte, and the current density is 3mA / cm 2 , The electrochemical oxidation reaction time is 2 hours, the product is suspended in the electrolyte, the electrolyte is passed through a 300-mesh sieve, and dried at 60°C for 12 hours to obtain Intermediate A;

[0090] The electrolyte is an inorganic salt aqueous solution;

[0091] The solvent of the electrolyte is glycerin, and the solute is ammonium fluoride and water;

[0092] The mass ratio of the ammonium fluoride: water: glycerin is 0.5:1:100;

[0093] (2) Reflux Intermediate A in 1.5mol / L sodium fluoride aqueous solution for 1 hour to obtain Interm...

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Abstract

The invention provides a persistent high-efficiency air purifying agent and a preparation method thereof, belonging to the field of filter materials. The purifying agent is prepared from an active manganese dioxide material and zinc ferrite, and belongs to a photocatalytic purifying agent, and the amount of the active manganese dioxide material is 5-25% of the zinc ferrite. The active manganese dioxide material used in the purifying agent is produced by annealing treatment after generating by an anodic oxidation method, or can be produced by treatment in a fluorine-containing substance aqueoussolution and then annealing treatment after generating by the anodic oxidation method. The zinc ferrite is prepared on site for using in the process of preparing the purifying agent and is prepared by using ferric nitrate and zinc nitrate under alkaline conditions. The air purifying agent can treat NOx air pollutants for a long time, and has a good adsorption and decomposition effect on formaldehyde common organic pollutants. After 90 minutes of photocatalytic treatment, the NOx content can be reduced to 54% of the initial content, and after 12 hours of photocatalytic treatment, the formaldehyde content can be reduced to 10.5% of the initial content.

Description

Technical field [0001] The invention belongs to the field of filter materials, in particular to a durable and efficient air purifier and a preparation method thereof. Background technique [0002] Air purifier refers to a product that has the functions of eliminating harmful gases in the air and eliminating various odors formed by the treatment of modern science and technology by using the absorption and decomposition principles of natural substances. [0003] There are a lot of air purifiers on the market, which are mixed. Generally speaking, there are the following types: adsorption-type air purification products, such as activated carbon, bamboo charcoal and coconut vitamin charcoal; cover-type deodorizing products, such as gel deodorant boxes, air fresheners, and decomposition-type deodorizing products. [0004] Adsorption air purifier is a purification product that uses activated carbon's physical adsorption, chemical adsorption, oxidation, catalytic oxidation and reduction pro...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/56B01D53/44B01D53/72A61L9/014
CPCA61L9/014B01D53/8628B01D53/8668B01D53/8687B01D2255/2073B01D2255/20792B01D2255/802B01D2257/708B01D2258/06
Inventor 何雯倩
Owner 何雯倩