Bactericide and preparation method thereof

A bactericide and transition metal technology, applied in the field of electrochemical catalytic oxidation bactericides, can solve the problems of toxicity of chemical disinfectants, complicated equipment, slow measured effect, etc.

Inactive Publication Date: 2009-08-26
BEIJING YADU ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the purification of biological pollution in indoor air mainly adopts the following methods: one is to spray chemical disinfectants, which can achieve the purpose of purification in a short time, but most chemical disinfectants are toxic and should not be used in an environment with people , so it is generally used in static disinfection, that is, it is used in an unmanned state, which has great limitations; the second is to use a purification device with a high-efficiency filter or a high-voltage electrostatic device to remove biological pollution, but Purification devices with high-efficien

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mixing the tourmaline powder into a solution made of copper nitrate and platinum chloride (the mass ratio of elemental platinum to elemental copper is 1-2:10), the weight of the tourmaline powder accounts for 10-30% in the solution, Add 40% sodium carbonate solution under stirring (sodium carbonate / copper nitrate / platinum chloride molar ratio is 15:10; 1), the amount of sodium carbonate is enough to make copper nitrate be oxidized to copper oxide and platinum chloride to be oxidized to Platinum oxide, and then continue to stir at high speed for 2h.

[0031] Take 100 grams of porous ceramics, the specific surface area is about 100 ~ 300m 2 / g, impregnated in the above mixed solution, after vacuum drying at 80°C, the temperature was programmed to rise to 450°C in the muffle furnace, kept for 2 hours, and then naturally dropped to room temperature, at this time, copper nitrate was oxidized to copper oxide, platinum chloride It is oxidized to platinum oxide, that is, it is...

Embodiment 2

[0033] Use the impregnation method to make the fungicide: dissolve silver nitrate in deionized water, add tourmaline powder not exceeding 10 microns, stir at high speed for 12 hours to form a uniform mixed solution, add aluminum oxide powder to the mixed solution, and stir at high speed After 2 hours, after vacuum drying at 90 ° C, the larger particles are crushed into 200-400 mesh particles, and then the particles are placed in a muffle furnace and the temperature is raised to 600 ° C, kept for 3 hours, and naturally dropped to room temperature. At this time, The roasted powder is ball-milled into particles of 2-10 microns, which is the fungicide.

[0034] The ratio of silver nitrate to tourmaline in the fungicide is 1:3-30, all of which can achieve the sterilization effect.

[0035] The bactericide can be further applied to air purifiers or air-conditioning ducts.

[0036] The weight ratio of the composition of silver nitrate and tourmaline to the porous substance in the fu...

Embodiment 3

[0038] Embodiment 3: adopt sol-gel method to make fungicide

[0039] Dissolve butyl titanate in isopropanol solution to prepare a 50% butyl titanate / isopropanol solution, and stir vigorously at a constant speed. Pipette a small amount of concentrated hydrochloric acid and quickly add it to the solution. After stirring for 2 minutes, add a certain amount of deionized water dropwise at a rate of one drop every 2 seconds. After stirring for 60 minutes, add the mixed solution of tourmaline silver nitrate dropwise, and continue stirring for 30 minutes, then stop stirring to form a sol. Airtight aging for 5-6 days. During the aging period, it is necessary to continuously filter and separate the isopropanol solution and the reaction product n-butanol that are precipitated due to the gradual "separation" of the gel.

[0040] The aged wet gel was vacuum-dried at 50-60°C for 5 hours, and the obtained dry gel was activated in a muffle furnace. °C / min to raise the temperature to 450 °C,...

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Abstract

The invention provides a novel bactericide, which consists of tourmaline, transition metal and/or oxide thereof, and a carrier. The tourmaline is powder of (Na, Ca) (Mg, Fe)3B3Al6Si6(O, OH, F)31, and accounts for 5 to 80 percent by weight of the bactericide; the transition metal and/or the oxide thereof by the weight of the metal elements account for 0.1 to 50 percent of the weight of the bactericide; and the carrier is one or a mixture of titanium dioxide, silicon dioxide, aluminum oxide, zeolite, zinc oxide, ferric oxide, zirconium dioxide, sepiolite, porous ceramics and active carbon. The bactericide does not need to add a power supply or a light source but can kill microbes such as bacteria, virus and mildew in the air, has the characteristics of small resistance, high sterilization speed and no pollution, and can be widely applied to air sterilization for an air purifier, an air conditioner and a concentrated air-conditioning ventilation system.

Description

technical field [0001] The invention belongs to the technical field of environmental electrochemical catalysis, relates to a fungicide and a preparation method thereof, and belongs to a novel electrochemical catalytic oxidation fungicide. Background technique [0002] In recent years, indoor biological pollution in buildings has been paid more and more attention, especially after a series of respiratory infectious diseases occurred on a large scale. The country has issued a series of standards and norms, such as "Indoor Air Quality Standards", "Hygienic Specifications for Centralized Air Conditioning and Ventilation Systems in Public Places" and "Public Places and Facilities Disinfection Management Procedures (Provisional)", etc. Microbiological pollution puts forward clear limit values. In order to meet the limit values ​​stipulated in these regulations and ensure personal safety, it is necessary to purify the biological pollution of the air. [0003] At present, the purif...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N59/14A01N59/06A01P3/00A61L9/22A61L101/02
Inventor 何鲁敏
Owner BEIJING YADU ENVIRONMENTAL PROTECTION TECH
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