CN114158566A - Single-component gel slow-release chlorine dioxide disinfectant and preparation method and application thereof - Google Patents
Single-component gel slow-release chlorine dioxide disinfectant and preparation method and application thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
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Abstract
The invention belongs to the technical field of disinfectants, and relates to a single-component gel slow-release chlorine dioxide disinfectant, and a preparation method and application thereof. The single-component gel slow-release chlorine dioxide disinfectant consists of carbomer, an alkaline compound, chlorite and water. When the container is used, the cover (or the opening degree of the cover) is opened for the container of the single-component gel slow-release chlorine dioxide disinfectant, the gel body is contacted with air, the gel body gradually absorbs carbon dioxide in the air, and chlorine dioxide gas can be slowly and stably released. The single-component gel slow-release chlorine dioxide disinfectant with the cover opened is placed in a relatively closed place, such as a room, a toilet, a carriage, a refrigerator, a cold storage and the like, to disinfect ambient air.
Description
Technical Field
The invention belongs to the technical field of disinfectants, and particularly relates to a single-component gel slow-release chlorine dioxide disinfectant, and a preparation method and application thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Chlorine dioxide is an efficient broad-spectrum type sterilization disinfectant, has the advantages of broad sterilization spectrum, low effective concentration, quick action, safe use and the like, is widely used as a sterilization disinfectant, a deodorization mildew preventive, a food preservative and a water purifying agent in the fields of water treatment, pulp bleaching, food processing, medical treatment, air purification, sterilization and preservation of vegetables and fruits and the like, and the market demand is increasing day by day.
According to the research and understanding of the inventor, more reports are made about the preparation method of the chlorine dioxide disinfectant at present. For example, a chlorine dioxide gel and a preparation method thereof (chinese patent application CN103565828A), which relates to a chlorine dioxide gel and a preparation method thereof, comprising the following steps: dissolving a high molecular polymer polyethylene glycol copolymer and bis-decyl tetradecanol in hot water to form a polyethylene glycol copolymer and a bis-decyl tetradecanol aqueous solution; heating a polyethylene glycol copolymer and an aqueous solution of didecyltetradecanol to form a gel-like gel; dissolving pure chlorine dioxide gas in water to form chlorine dioxide aqueous solution; uniformly mixing the chlorine dioxide aqueous solution with the polyethylene glycol copolymer and the bis-decyl tetradecanol micelle to form chlorine dioxide gel; by the steps, the invention can stably store chlorine dioxide gas in the gel, so that the chlorine dioxide gas can be stored for a long time. For another example, a controllable visible chlorine dioxide slow-release gel and a preparation method thereof (Chinese patent application CN103931652A), which relates to a preparation method of the controllable visible chlorine dioxide slow-release gel and relates to the technical field of gas sterilization and deodorization. Respectively dissolving water-soluble raw materials such as sodium chlorite, acrylamide, bisacrylamide, borax, potassium persulfate and the like, mixing the raw materials according to a proportion, subpackaging the mixture, adding tetramethylethylenediamine, and initiating a polymerization reaction to form polyacrylamide gel. When in use, a matched acidification rod is inserted into the gel, so that the chlorine dioxide gas can be slowly released, and the effects of sterilizing and deodorizing the surrounding environment are achieved. It can be seen that the existing gel slow-release chlorine dioxide disinfectant is a binary component, and when in use, the binary component is required to be mixed, so that chlorine dioxide can be slowly released. Single-component gel slow-release chlorine dioxide disinfectants have been rarely reported.
According to the research of the inventor, the activating agents of the existing chlorine dioxide disinfectant are hydrochloric acid and citric acid generally, but the hydrochloric acid has high volatility and serious corrosivity, so that the disinfectant is easy to lose efficacy and pollutes the environment. For the gel slow-release chlorine dioxide disinfectant, the release rate of the chlorine dioxide by using hydrochloric acid and citric acid as activating agents is high, so that the gel slow-release chlorine dioxide disinfectant is not suitable for use.
In order to avoid the defects of hydrochloric acid and citric acid as activating agents, other activating agents have been adopted, but the inventor researches show that the release rate of the existing activating agents for replacing hydrochloric acid and citric acid is not ideal, so that a new chlorine dioxide disinfectant needs to be developed, the release rate of chlorine dioxide is controlled, the types of disinfectants (such as single-component gel slow-release type chlorine dioxide disinfectants) are enriched, the production cost of the disinfectants is lower, the production process is simpler, and the application requirements of market users are met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a single-component gel slow-release chlorine dioxide disinfectant, a preparation method and application thereof, and the disinfectant has low production cost and simple production process.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect of the invention, a single component gel slow release chlorine dioxide disinfectant is provided;
the single-component gel slow-release chlorine dioxide disinfectant consists of carbomer, an alkaline compound, chlorite and water.
The invention develops a novel single-component gel slow-release chlorine dioxide disinfectant, enriches the types of the disinfectant, has lower production cost and simpler production process, and meets the application requirements of the market.
The carbomer and the alkaline compound such as sodium hydroxide can form gel, and the gel is easier to carry compared with the gel in a liquid state. Meanwhile, gel formed by the carbomer can absorb carbon dioxide in the air, so that the chlorite is activated by using carbon dioxide or carbonic acid (formed by carbon dioxide and water) as an activating agent, chlorine dioxide gas is slowly and stably released, and the addition of the activating agent is avoided.
According to the second aspect of the invention, the preparation method of the single-component gel slow-release chlorine dioxide disinfectant comprises the steps of preparing gel from carbomer and an alkaline compound, adding a chlorite aqueous solution, and uniformly stirring to obtain the single-component gel slow-release chlorine dioxide disinfectant.
The method comprises the steps of preparing carbomer and an alkaline compound into gel, and then adding a chlorite aqueous solution to prevent the carbomer from reacting with chlorite firstly, so that the content of active ingredients is prevented from being reduced and even the carbomer is prevented from losing efficacy.
In a third aspect of the invention, a method for slowly and smoothly releasing chlorine dioxide gas by the single-component gel slow-release type chlorine dioxide disinfectant is provided, which comprises the following steps:
opening the cover of the sealed container or controlling the opening degree of the cover of the sealed container to enable the single-component gel slow-release chlorine dioxide disinfectant in the sealed container to be in contact with air, enabling the gel of the single-component gel slow-release chlorine dioxide disinfectant to gradually absorb carbon dioxide in the air and react with water to form carbonic acid, and enabling the carbon dioxide or the carbonic acid to be used as an activating agent to perform an activation reaction at room temperature to release chlorine dioxide gas; the sealed container contains or stores the single-component gel slow-release chlorine dioxide disinfectant.
The method of the invention can slowly and stably release chlorine dioxide gas and can control the release rate of chlorine dioxide.
In a fourth aspect of the invention, the single-component gel slow-release chlorine dioxide disinfectant is applied to disinfection of ambient air in a relatively closed place, such as a room, a toilet, a carriage, a refrigerator, a cold storage and the like. And placing the closed container with the cover opened in a relatively closed place, wherein the closed container contains or stores the single-component gel slow-release chlorine dioxide disinfectant.
The invention has the following beneficial effects:
(1) the single-component gel slow-release chlorine dioxide disinfectant prepared by the invention has good use performance, and can be widely applied to disinfection of ambient air in relatively closed places, such as rooms, toilets, carriages, refrigerators, cold stores and the like.
(2) The single-component gel slow-release chlorine dioxide disinfectant has the advantages of cheap production raw materials, wide sources and low production cost of chlorine dioxide. Can be preserved and used for several months.
(3) The single-component gel slow-release chlorine dioxide disinfectant prepared by the invention is a single-component gel, is convenient to use and carry, and is easy to produce, package and transport.
(4) The use is convenient: the containing container of the single-component gel slow-release type chlorine dioxide disinfectant is opened (or the opening degree of the containing container is controlled), the gel body is contacted with air, the gel body gradually absorbs carbon dioxide in the air and reacts with the water to form carbonic acid, and at room temperature, the carbon dioxide or the carbonic acid is used as an activating agent to carry out an activation reaction, so that chlorine dioxide gas can be slowly and stably released, and the release rate of the chlorine dioxide can be controlled.
(5) The release rate of chlorine dioxide is low: it is well known that the ionization constant Ka of carbonic acid is much lower than that of hydrochloric acid, citric acid, etc.; carbonic acid is much less acidic than hydrochloric acid, citric acid, etc. Therefore, the rate of absorbing carbon dioxide in the air to generate chlorine dioxide is relatively slow, and the slow-release type chlorine dioxide gas belongs to a real slow-release type. However, the release rate of chlorine dioxide is high by using hydrochloric acid, citric acid and the like, and the chlorine dioxide is rapidly released in a short time and cannot keep a low release rate for a long time. The chlorine dioxide is rapidly released in a short time, so that the concentration of the indoor chlorine dioxide is too high, a human body is stimulated, and the health of the human body is threatened.
(6) The release rate of the chlorine dioxide is stable and controllable: the gel body is contacted with the air by opening the cover of the container (or controlling the opening degree of the cover), the gel body gradually absorbs carbon dioxide in the air and reacts with the water to form carbonic acid, and the carbon dioxide or the carbonic acid is used as an activating agent to carry out an activating reaction at room temperature, so that chlorine dioxide gas can be slowly and stably released, and the release rate of the chlorine dioxide is controlled. The cover is not opened, and the activation reaction is not carried out.
(7) Carbomers function to form gels: the aqueous solution of carbomer reacts with the aqueous solution of alkaline compounds such as sodium hydroxide to form a hydrogel, and the gel cannot be formed without adding the alkaline compounds such as sodium hydroxide. On the one hand, the hydrogel body can play a role of gradually absorbing carbon dioxide in the air to form weak acid carbonic acid, and plays a role of activating reaction. On the other hand, the hydrogel body can act to stabilize chlorite, a gel cannot be formed without the addition of an alkaline compound such as sodium hydroxide, and chlorite cannot exist stably because chlorite will react with carbomer to form chlorine dioxide. On the third hand, if other acids such as hydrochloric acid, citric acid, etc. are additionally added to the one-component gel slow-release type chlorine dioxide disinfectant, a gel cannot be formed (see experimental example 1).
(8) The gel formed by the carbomer plays a role as a carrier for the slow and stable release of the chlorine dioxide.
(9) The method is simple, convenient to operate, high in practicability and easy to popularize.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The raw materials and reagents used in the embodiment of the invention are all conventional chemical products, and can be purchased in the market.
The invention provides a single-component gel slow-release type chlorine dioxide disinfectant, a preparation method and application thereof, in view of the fact that the existing gel slow-release type chlorine dioxide disinfectant is a binary component.
In one embodiment of the invention, a single-component gel slow-release chlorine dioxide disinfectant is provided, which consists of carbomer, an alkaline compound, chlorite and water.
In some embodiments, the mass ratio of carbomer, the alkaline compound, the chlorite and the water is 1 (0.2-0.7) to (0.5-3.0) to (30-80).
The invention also provides a preparation method of the single-component gel slow-release chlorine dioxide disinfectant, which comprises the steps of preparing gel from carbomer aqueous solution and alkaline compound aqueous solution, adding chlorite aqueous solution, and uniformly stirring to obtain the single-component gel slow-release chlorine dioxide disinfectant.
In some embodiments, the method specifically comprises the following steps:
adding carbomer into a reaction vessel, adding water, and stirring to dissolve completely; adding an alkaline compound aqueous solution (the mass fraction is 5-20%), and uniformly stirring to obtain a gel; and adding a chlorite aqueous solution (the mass fraction is 5-30%) and uniformly stirring.
In one or more embodiments, the basic compound is sodium hydroxide, potassium hydroxide, or the like.
In one or more embodiments, the chlorite is sodium chlorite or potassium chlorite.
In one or more embodiments, the chlorite aqueous solution accounts for 5-30% by mass, and the alkaline compound aqueous solution accounts for 5-20% by mass.
In one or more embodiments, sodium chlorite is a commercial product (typically 82% by weight).
In some embodiments, the chlorite solution is added and stirred uniformly and then sealed. Can prevent carbon dioxide in the air from entering when not in use.
In some embodiments, the chlorite solution is added and stirred uniformly and then stored under inert atmosphere or vacuum.
In a third embodiment of the present invention, there is provided a method for slowly and smoothly releasing chlorine dioxide gas in the single-component gel slow-release chlorine dioxide disinfectant, comprising:
opening the cover of the sealed container or controlling the opening degree of the cover of the sealed container to enable the single-component gel slow-release chlorine dioxide disinfectant in the sealed container to be in contact with air, enabling the gel of the single-component gel slow-release chlorine dioxide disinfectant to gradually absorb carbon dioxide in the air and react with water to form carbonic acid, and enabling the carbon dioxide or the carbonic acid to be used as an activating agent to perform an activation reaction at room temperature to release chlorine dioxide gas; the sealed container contains or stores the single-component gel slow-release chlorine dioxide disinfectant.
The method of the invention can slowly and stably release chlorine dioxide gas and can control the release rate of chlorine dioxide.
The activating agent in the invention is carbon dioxide or carbonic acid in the air, and a large number of experiments prove and analyze that the slow release effect of the carbon dioxide or carbonic acid in the air is better, but hydrochloric acid, citric acid and the like are not good according to the requirement of the single-component gel slow-release chlorine dioxide disinfectant prepared by the invention.
In a fourth embodiment of the invention, the single-component gel slow-release chlorine dioxide disinfectant is applied to disinfection of ambient air in a relatively closed place, such as a room, a toilet, a carriage, a refrigerator, a cold storage and the like. And placing the closed container with the cover opened in a relatively closed place, wherein the closed container contains or stores the single-component gel slow-release chlorine dioxide disinfectant.
Specifically, the closed container for containing the single-component gel slow-release chlorine dioxide disinfectant is opened and then placed in a room, a toilet, a carriage, a refrigerator, a cold storage and other closed places for disinfecting ambient air.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1
(1) A preparation method of a single-component gel slow-release chlorine dioxide disinfectant comprises the following steps:
1.0g carbomer, 40.0g water, fully dissolved; then adding 4.0g of 10% sodium hydroxide aqueous solution, and uniformly stirring; and adding 13.2g of sodium chlorite aqueous solution (the mass fraction is 9.1 percent), uniformly stirring to obtain the single-component gel slow-release chlorine dioxide disinfectant, wherein the single-component gel slow-release chlorine dioxide disinfectant placed in the bottle is obliquely placed without flowing.
(2) The method for slowly and stably releasing the chlorine dioxide gas by the single-component gel slow-release chlorine dioxide disinfectant comprises the following steps:
the containing container of the single-component gel slow-release type chlorine dioxide disinfectant is opened (or the opening degree of the containing container is controlled), the gel body is contacted with air, the gel body gradually absorbs carbon dioxide in the air and reacts with the water to form carbonic acid, and at room temperature, the carbon dioxide or the carbonic acid is used as an activating agent to carry out an activation reaction, so that chlorine dioxide gas can be slowly and stably released, and the release rate of the chlorine dioxide can be controlled.
The reaction equation is as follows:
5NaClO2+2H2CO3＝4ClO2+2Na2CO3+NaCl+2H2O (1)
(3) the application of the single-component gel slow-release chlorine dioxide disinfectant comprises the following steps:
the single-component gel slow-release chlorine dioxide disinfectant with the cover opened is placed in a relatively closed place, such as a room, a toilet, a carriage, a refrigerator, a cold storage and the like, so as to disinfect ambient air. Can maintain the disinfection effect for a long time.
Experimental example 1
(1) The preparation method of the slow-release chlorine dioxide disinfectant comprises the following steps:
1) preparing a gel main agent: 1.0g carbomer, 40.0g water, fully dissolved; then adding 4.0g of 10% sodium hydroxide aqueous solution, and uniformly stirring; then 13.2g of sodium chlorite aqueous solution (mass fraction is 9.1%) is added, and the mixture is stirred uniformly.
2) Activating agent: and (3) citric acid solid.
(2) Activation of the slow-release chlorine dioxide disinfectant:
the activating agent 1.11g is added into the gel main agent 58.2g, and the activating reaction can be carried out at room temperature, and chlorine dioxide gas can be released. But the release time was much shorter than in example 1. Further, no gel is formed at this time, and the solution state is obtained.
The reaction equation is as follows:
15NaClO2+4C6H8O7＝12ClO2+4C6H5O7Na3+3NaCl+6H2O (2)
experimental example 2
(1) Preparing a chlorine dioxide disinfectant:
1) preparing a main agent: preparing 4.31 percent of sodium chlorite aqueous solution by mass fraction.
2) Preparing an activating agent: and (3) citric acid solid.
(2) Activation of chlorine dioxide disinfectant:
mixing 20ml of the main agent and 0.84g of activating agent uniformly at room temperature, carrying out activation reaction for 10min, and measuring the amount of generated chlorine dioxide after activation to be 0.2005g (the activation efficiency is 45.54%) by an iodometry; after 60min of reaction, the amount of chlorine dioxide was again determined to be 0.173 g.
The reaction equation is as follows:
15NaClO2+4C6H8O7＝12ClO2+4C6H5O7Na3+3NaCl+6H2O (2)
experimental example 3
(1) Preparing a chlorine dioxide disinfectant:
1) preparing a main agent: preparing 4.31 percent of sodium chlorite aqueous solution by mass fraction.
2) Preparing an activating agent: dilute hydrochloric acid (1: 1).
(2) Activation of chlorine dioxide disinfectant:
mixing 20ml of the main agent and 2.36ml of the activating agent uniformly at room temperature, performing activation reaction for 10min, and measuring the amount of generated chlorine dioxide after activation to be 0.2928g (the activation efficiency is 66.5%) by an iodometry; the amount of chlorine dioxide was again measured to be 0.2617g after 60min of activation reaction.
The reaction equation is as follows:
5NaClO2+4HCl＝4ClO2+5NaCl+2H2O (3)
experimental example 4
(1) Preparing chlorine dioxide:
1) preparing a main agent: preparing 4.31 percent of sodium chlorite aqueous solution by mass fraction.
2) Activating agent: malonic acid solid.
(2) Activation of chlorine dioxide:
20ml of the above main agent and 0.68g of an activating agent were mixed uniformly at room temperature and subjected to an activation reaction for 10 minutes, and the amount of chlorine dioxide generated after activation was measured by iodometry to be 0.187g (activation efficiency: 42.47%). The amount of chlorine dioxide was measured to be 0.017g after 60min of the activation reaction, and it was found that a large amount of carbon dioxide bubbles were generated in the reaction solution due to the continued oxidation reaction of the generated chlorine dioxide with sodium malonate.
The reaction equation is as follows:
5NaClO2+2C3H4O4＝4ClO2+2C3H2O4Na2+NaCl+2H2O (4)
12ClO2+4C3H2O4Na2＝12CO2+7O2+8NaCl+4HCl+2H2O (5)
note that: experimental example 2, experimental example 3, and experimental example 4 were performed under the same experimental conditions (the amount of the activating agent was 2 times the amount calculated theoretically).
And (4) conclusion: based on the above examples and experimental examples, the single-component gel slow-release chlorine dioxide disinfectant can be prepared only by reasonably selecting reaction raw materials and controlling reaction conditions. The invention selects specific raw materials of carbomer, alkaline compound, chlorite and water to obtain the single-component gel slow-release chlorine dioxide disinfectant. However, if an activator such as hydrochloric acid or citric acid is added, a gel cannot be formed.
Example 2
The one-component gel slow-release chlorine dioxide disinfectant prepared in example 1 was added to the bottle, which was then capped and sealed.
When the disinfectant is used, the bottle cap is opened, and the bottle containing the single-component gel slow-release chlorine dioxide disinfectant is placed in a toilet to disinfect ambient air.
Example 3
Since carbon dioxide in the air is used as an activator in example 1, it is difficult to measure the release rate of chlorine dioxide by iodometry. This is because: oxygen in the air has a great influence on the iodine amount measurement, and potassium iodide can be oxidized by the oxygen in the air.
The research adopts a relatively visual and simple semi-quantitative method to represent the release rate of the chlorine dioxide: chlorine dioxide is known to have a bleaching function and is industrially used as a bleaching agent for pulp. The wide-range pH test paper wetted by distilled water is placed at the bottle mouth of the activated chlorine dioxide disinfectant, the released chlorine dioxide gas bleaches the wide-range pH test paper, the color of the wide-range pH test paper is changed from yellow to white, the release rate of the chlorine dioxide gas can be compared semi-quantitatively according to the time, and the longer the time is, the lower the release rate of the chlorine dioxide is.
After the chlorine dioxide disinfectant prepared in example 1 and experimental examples 1-3 was activated, a wide range pH indicator paper wetted with distilled water was placed on the mouth of the chlorine dioxide disinfectant bottle after activation, and the time for the wide range pH indicator paper to change from yellow to white was recorded as shown in table 1. It can be seen that the release rate of example 1 is relatively slow.
TABLE 1 bleaching time
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A single-component gel slow-release chlorine dioxide disinfectant is characterized by comprising carbomer, an alkaline compound, chlorite and water.
2. The single-component gel slow-release chlorine dioxide disinfectant as claimed in claim 1, wherein the mass ratio of carbomer, the alkaline compound, the chlorite and the water is 1 (0.2-0.7): (0.5-3.0): 30-80).
3. A method for preparing the single-component gel slow-release chlorine dioxide disinfectant as claimed in claim 1 or 2, wherein the single-component gel slow-release chlorine dioxide disinfectant is prepared by preparing a gel from an aqueous solution of carbomer and an aqueous solution of an alkaline compound, adding an aqueous solution of chlorite, and uniformly stirring.
4. The method for preparing a mono-component gel sustained-release chlorine dioxide disinfectant as set forth in claim 3, wherein carbomer is added to the reaction vessel, water is added, and the mixture is sufficiently dissolved by stirring; adding an alkaline compound aqueous solution, and uniformly stirring to obtain a gel; adding chlorite solution and stirring.
5. The method for preparing the single-component gel slow-release chlorine dioxide disinfectant as claimed in claim 4, wherein the mass fraction of the chlorite aqueous solution is 5-30%;
or the mass fraction of the alkaline compound aqueous solution is 5-20%;
or, the alkaline compound is sodium hydroxide or potassium hydroxide;
or, the chlorite is sodium chlorite or potassium chlorite.
6. The method for preparing a single component gel sustained release chlorine dioxide disinfectant of claim 3, wherein the chlorite aqueous solution is added, stirred uniformly and then sealed;
or adding the chlorite aqueous solution, stirring uniformly, and storing under the inert atmosphere or vacuum condition.
7. The method for preparing a single component gel slow release chlorine dioxide disinfectant as claimed in claim 3, wherein the method specifically comprises the steps of:
adding carbomer into a reaction vessel, adding water, and stirring to dissolve completely; adding 5-20% of alkaline compound aqueous solution by mass, and uniformly stirring to obtain gel; and adding 5-30% by mass of chlorite aqueous solution, and uniformly stirring.
8. The method of releasing chlorine dioxide gas in a one-component gel slow-release chlorine dioxide disinfectant as set forth in claim 1 or 2, comprising the steps of:
opening the cover of the sealed container or controlling the opening degree of the cover of the sealed container to enable the single-component gel slow-release chlorine dioxide disinfectant in the sealed container to be in contact with air, enabling the gel of the single-component gel slow-release chlorine dioxide disinfectant to gradually absorb carbon dioxide in the air and react with water to form carbonic acid, and enabling the carbon dioxide or the carbonic acid to be used as an activating agent to perform an activation reaction at room temperature to release chlorine dioxide gas; the sealed container contains or stores the single-component gel slow-release chlorine dioxide disinfectant.
9. Use of the single component gel slow release chlorine dioxide disinfectant of claim 1 or 2 in the disinfection of ambient air in relatively closed locations.
10. The use of claim 9, wherein an open-ended sealed container containing or storing a one-component gel slow-release chlorine dioxide disinfectant is placed in a relatively closed location;
the closed place is a room, a toilet, a carriage, a refrigerator or a cold storage.
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