CN112772642B - Rice hull silicon slow-release air purification porous material and preparation method thereof - Google Patents
Rice hull silicon slow-release air purification porous material and preparation method thereof Download PDFInfo
- Publication number
- CN112772642B CN112772642B CN202110207393.3A CN202110207393A CN112772642B CN 112772642 B CN112772642 B CN 112772642B CN 202110207393 A CN202110207393 A CN 202110207393A CN 112772642 B CN112772642 B CN 112772642B
- Authority
- CN
- China
- Prior art keywords
- rice hull
- chlorite
- acid
- slow
- porous material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- A01N25/08—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 solids as carriers or diluents
-
- 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
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
-
- 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
- A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a rice hull silicon slow-release porous material for air purification and a preparation method thereof, wherein the porous material consists of an outer reactant diffusion layer and an inner micro-reaction layer, the rice hull silicon slow-release air purification porous material is prepared from chlorite, paraffin, acid and rice hull silicon dioxide, the content of the chlorite is 1-8 g, the content of the paraffin is 1-16 g, the content of the acid is 0.5-4 g, and the content of the rice hull silicon dioxide is 1-5 g; the invention effectively prolongs the slow release time of the chlorine dioxide gas to more than three months by implementing control in two stages of reaction and diffusion, and realizes the stable release of the chlorine dioxide gas; the air is utilized for slow release sterilization, the slow release amount and the time are accurate and controllable, the cost is low to a few gross cash, the environment is very green, and the final material can safely return to the environment.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a rice hull silicon slow-release air purification porous material and a preparation method thereof.
Background
The air purification is to provide an integral solution scheme of sterilization, disinfection, dust fall, haze removal, removal of harmful decoration residues, peculiar smell and the like aiming at various indoor environmental problems, improve the living and office conditions and promote the physical and mental health; however, the existing sterilization and disinfection purification materials, such as a negative oxygen ion purifier, utilize the negative ions generated by the purifier to purify, remove dust, remove odor and sterilize air; however, the service life of the negative ions in the air is very short, so that the negative ions need to be continuously released into the air;
secondly, chlorine dioxide is regarded as an A1-grade efficient bacteriostatic agent by the world health organization due to strong oxidizing property and reactivity thereof, so that the chlorine dioxide is continuously developed and used, and the application field is wider and wider, but the chlorine dioxide has the defects of insufficient reaction stability, short duration and the like;
the existing air purification material generally adopts chlorine dioxide air purification gel, but the preparation process of the air purification gel is complex, the cost is high, the slow release time and the slow release amount cannot be accurately controlled, and the final material cannot be naturally degraded, so that secondary pollution is easily caused;
the existing air purification gel realizes the slow release of chlorine dioxide by dispersing chlorite and acid into hydrogel, the slow release control mainly controls the gas diffusion stage of the chlorine dioxide, the diffusion period is prolonged by the micropores of the gel, the service period is short, generally less than two months, the release is unstable, the concentration of the gas released at the beginning is higher, and the gas released at the later stage is unstable.
Therefore, aiming at the problems that the purification effect is low due to the fact that the using time is shortened due to the short reaction time between the sterilization media of the purification material, the cost is increased due to the fact that the purification material needs to be replaced with a new purification material continuously, and the like, the rice hull silicon slow-release air purification porous material and the preparation method provided by the invention aim to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a rice hull silicon slow-release air purification porous material and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a rice hull silicon slow-release air purification porous material and a preparation method thereof are disclosed, wherein the rice hull silicon slow-release air purification porous material is prepared by the following specific preparation steps:
A. firstly, dissolving a certain amount of chlorite into paraffin to prepare a powder mixture, and tabletting by using a powder tabletting machine to form a chlorite reaction layer;
B. dissolving a certain part of acid in paraffin to prepare a powder mixture, tabletting by using a powder tablet machine, and forming an acid layer-containing reaction layer after tabletting;
C. and D, adding rice hull silicon dioxide between the chlorite reaction layer obtained in the step A and the acid-containing layer obtained in the step B, and tabletting by using a powder tablet machine to finally form the micro-reaction slow-release space purification tablet with a sandwich structure, wherein the upper reaction layer is the chlorite reaction layer, the middle reaction layer is the rice hull silicon dioxide reaction layer, and the lower reaction layer is the acid-containing layer.
Preferably, the grain diameter of the rice hull silicon dioxide reaches the nano-scale silicon dioxide, the grain diameter of the nano-silicon dioxide is about 10-40 nanometers, each grain of silicon dioxide is provided with a worm-shaped pore canal, and the pore diameter of each pore canal is 4 nanometers.
Preferably, the rice hull silicon slow-release air purification porous material is prepared from chlorite, paraffin, acid and rice hull silicon dioxide, wherein the content of the chlorite is 1-8 g, the content of the paraffin is 1-16 g, the content of the acid is 0.5-4 g, and the content of the rice hull silicon dioxide is 1-5 g.
Preferably, the chlorite can be replaced by sodium chlorite or potassium chlorite, and the acid can be oxalic acid, citric acid or maleic acid.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention effectively prolongs the slow release time of the chlorine dioxide gas to more than three months by implementing control in two stages of reaction and diffusion, and realizes the stable release of the chlorine dioxide gas;
2. the air is utilized for slow release sterilization, the slow release amount and the time are accurate and controllable, the cost is low to a few gross cash, the adopted rice hull and silicon dioxide are very green and environment-friendly, and the final materials can safely return to the environment.
3. The silicon dioxide prepared from the rice hulls is nano-scale, the purity reaches 99.92 percent, the silicon dioxide is extracted by the ore before, but the ore is limited, the rice hulls are used for production at present, and the cyclic utilization and sustainable development of resources are realized.
Drawings
FIG. 1 is a microscopic scanning electron microscope image of rice hull silica.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a rice hull silicon slow-release air purification porous material and a preparation method thereof are disclosed, wherein the rice hull silicon slow-release air purification porous material is prepared by the following specific steps:
A. firstly, dissolving a certain amount of chlorite into paraffin to prepare a powder mixture, and tabletting by using a powder tabletting machine to form a chlorite reaction layer;
B. dissolving a certain part of acid in paraffin to prepare a powder mixture, tabletting by using a powder tablet machine, and forming an acid layer-containing reaction layer after tabletting;
C. rice hull silicon dioxide is added between the chlorite reaction layer obtained in the step A and the acid-containing layer obtained in the step B, then tabletting is carried out by using a powder tablet press together, and finally the micro-reaction slow-release space purification tablet with a sandwich structure is formed, wherein the upper reaction layer is the chlorite reaction layer, the middle reaction layer is the rice hull silicon dioxide reaction layer, and the lower reaction layer is the acid-containing layer.
In the embodiment, the grain diameter of the rice hull silicon dioxide reaches the nano-scale silicon dioxide, the grain diameter of the nano-silicon dioxide is about 10-40 nanometers, each grain of silicon dioxide is provided with a worm-shaped pore canal, and the pore diameter of each pore canal is 4 nanometers.
In the embodiment, the rice hull silicon slow-release air purification porous material is prepared from chlorite, paraffin, acid and rice hull silicon dioxide, wherein the content of the chlorite is 1-8 g, the content of the paraffin is 1-16 g, the content of the acid is 0.5-4 g, and the content of the rice hull silicon dioxide is 1-5 g.
In this embodiment, the chlorite can be replaced by sodium chlorite or potassium chlorite, and the acid can be oxalic acid, citric acid or maleic acid.
The first embodiment is as follows:
mixing 1g of sodium chlorite and 2g of paraffin powder, heating to 65 ℃, stirring to completely dissolve the chlorite in the paraffin, cooling the mixture to room temperature, and tabletting by using a powder tabletting machine under 2 MPa; mixing 0.5g of oxalic acid and 1g of paraffin powder, heating to 65 ℃, uniformly stirring, cooling the mixture of oxalic acid and paraffin powder to room temperature, and tabletting by using a powder tabletting machine under 2 MPa; 1g of rice hull silicon dioxide is added between the two tablets, and the rice hull silicon dioxide and the two tablets are pressed together under 2MPa to form a sandwich structure micro-reaction slow-release space purification tablet;
a microscopic scanning electron microscope image of the rice hull silicon dioxide is shown in a figure I, the particle diameter of the nano silicon dioxide is about 10-40 nanometers, worm-shaped pore channels are distributed on the nano particles, the pore diameter of the pore channels is tested to be 4 nanometers by a nitrogen adsorption method, and the specific surface area of the rice hull silicon dioxide is about 200m 2/g. The micro-reaction space purification sheet has the sterilization rate of more than 99.9 percent at the temperature of 25 ℃, the action volume of 3 cubic meters and the effective time of 90 days, and is suitable for the sterilization of bacteria and the fresh keeping of fruit and food in small spaces such as refrigerators, wardrobes, private cars and the like.
Example two:
mixing 3g of sodium chlorite and 8g of paraffin powder, heating to 65 ℃, stirring to completely dissolve the chlorite in the paraffin, cooling the mixture to room temperature, and tabletting by using a powder tabletting machine under 9 MPa; mixing 2g of citric acid and 3g of paraffin powder, heating to 65 ℃, uniformly stirring, cooling the mixture of oxalic acid and paraffin powder to room temperature, and tabletting by using a powder tabletting machine under the pressure of 9 MPa; 2g of rice hull silicon dioxide is added between the two tablets, and the mixture is tableted under 9MPa to form the sandwich structure micro-reaction slow-release space purification tablet. The micro-reaction space purification sheet has the sterilization rate of more than 99.9 percent, the action volume of 12 cubic meters and the effective time of 120 days at the temperature of 25 ℃.
Example three:
mixing 8g of sodium chlorite and 16g of paraffin powder, heating to 65 ℃, stirring to completely dissolve the chlorite in the paraffin, cooling the mixture to room temperature, and tabletting by using a powder tabletting machine under 20 MPa; mixing 4g of maleic acid and 8g of paraffin powder, heating to 65 ℃, uniformly stirring, cooling the mixture of oxalic acid and paraffin powder to room temperature, and tabletting by using a powder tabletting machine under 20 MPa; 5g of rice hull silicon dioxide is added between the two tablets, and the mixture is tableted under 20MPa to form the sandwich structure micro-reaction slow-release space purification tablet. The micro-reaction space purification sheet has the sterilization rate of more than 99.9 percent, the action volume of 50 cubic meters and the effective time of 150 days at the temperature of 25 ℃. The micro-reaction space purification sheet is suitable for disinfection of single household rooms.
In conclusion, the invention effectively prolongs the slow release time of the chlorine dioxide gas to more than three months by controlling the reaction and the diffusion in two stages, and realizes the stable release of the chlorine dioxide gas.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A preparation method of a rice hull silicon slow-release air purification porous material is characterized by comprising the following steps: the specific preparation steps of the rice hull silicon slow-release air purification porous material are as follows:
A. firstly, dissolving a certain amount of chlorite into paraffin to prepare a powder mixture, and tabletting by using a powder tabletting machine to form a chlorite reaction layer;
B. dissolving a certain part of acid in paraffin to prepare a powder mixture, tabletting by using a powder tablet machine, and forming an acid layer-containing reaction layer after tabletting;
C. rice hull silicon dioxide is added between the chlorite reaction layer obtained in the step A and the acid-containing layer obtained in the step B, then tabletting is carried out by using a powder tablet press together, and finally the micro-reaction slow-release space purification tablet with a sandwich structure is formed, wherein the upper reaction layer is the chlorite reaction layer, the middle reaction layer is the rice hull silicon dioxide reaction layer, and the lower reaction layer is the acid-containing layer.
2. The preparation method of the rice hull silicon slow-release air purification porous material according to claim 1, characterized by comprising the following steps: the grain diameter of the rice hull silicon dioxide reaches the nanometer level, the grain diameter of the rice hull silicon dioxide is 10-40 nanometers, each grain of silicon dioxide is provided with a worm-shaped pore canal, and the pore diameter of each pore canal is 4 nanometers.
3. The preparation method of the rice hull silicon slow-release air purification porous material according to claim 1, characterized by comprising the following steps: the rice hull silicon slow-release air purification porous material is prepared from chlorite, paraffin, acid and rice hull silicon dioxide, wherein the content of the chlorite is 1-8 g, the content of the paraffin is 1-16 g, the content of the acid is 0.5-4 g, and the content of the rice hull silicon dioxide is 1-5 g.
4. The preparation method of the rice hull silicon slow-release air purification porous material according to claim 1, characterized by comprising the following steps: the chlorite is replaced by sodium chlorite or potassium chlorite, and the acid is oxalic acid, citric acid or maleic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110207393.3A CN112772642B (en) | 2021-02-25 | 2021-02-25 | Rice hull silicon slow-release air purification porous material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110207393.3A CN112772642B (en) | 2021-02-25 | 2021-02-25 | Rice hull silicon slow-release air purification porous material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112772642A CN112772642A (en) | 2021-05-11 |
| CN112772642B true CN112772642B (en) | 2022-05-20 |
Family
ID=75761893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110207393.3A Active CN112772642B (en) | 2021-02-25 | 2021-02-25 | Rice hull silicon slow-release air purification porous material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112772642B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094698A (en) * | 1994-05-16 | 1994-11-09 | 于祚斌 | Produce dioxide peroxide disinfection of drinking water sheet and production method thereof |
| KR20090013414A (en) * | 2007-08-01 | 2009-02-05 | 한국과학기술연구원 | A room temperature stable solid composition for providing chlorine dioxide solution in aqueous medium |
| CN105994262A (en) * | 2016-05-20 | 2016-10-12 | 武汉普优瑞科技有限公司 | Chlorine dioxide gas slow-release component and preparation method thereof and aseptic mask with same |
| CN110384105A (en) * | 2019-07-25 | 2019-10-29 | 苏州拜革环能科技有限公司 | A kind of controllable sustained-release disinfection and sterilization scavenging material |
-
2021
- 2021-02-25 CN CN202110207393.3A patent/CN112772642B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094698A (en) * | 1994-05-16 | 1994-11-09 | 于祚斌 | Produce dioxide peroxide disinfection of drinking water sheet and production method thereof |
| KR20090013414A (en) * | 2007-08-01 | 2009-02-05 | 한국과학기술연구원 | A room temperature stable solid composition for providing chlorine dioxide solution in aqueous medium |
| CN105994262A (en) * | 2016-05-20 | 2016-10-12 | 武汉普优瑞科技有限公司 | Chlorine dioxide gas slow-release component and preparation method thereof and aseptic mask with same |
| CN110384105A (en) * | 2019-07-25 | 2019-10-29 | 苏州拜革环能科技有限公司 | A kind of controllable sustained-release disinfection and sterilization scavenging material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112772642A (en) | 2021-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110550688B (en) | By using CO2Method for removing phenols in water by activated charcoal activated persulfate degradation | |
| CN103172897A (en) | Preparation method of nano-fiber supported nano-titania mesoporous material | |
| JP2021186802A (en) | Porous carbon composite titanium oxide-halogen oxide photocatalyst and method for producing the same | |
| CN106219604B (en) | A kind of preparation method and its photocatalytic applications for preparing hierarchical porous structure titanium dioxide | |
| CN104722281A (en) | Nano titanium dioxide/chitosan three-dimensional porous composite material and preparation method thereof | |
| CN105457658A (en) | Z-type catalyst capable of simulating photosynthesis to degrade pollutants and generate hydrogen simultaneously, and preparation method of Z-type catalyst | |
| CN111068666A (en) | Sepiolite supported noble metal formaldehyde room-temperature oxidation catalyst and preparation method thereof | |
| CN112772642B (en) | Rice hull silicon slow-release air purification porous material and preparation method thereof | |
| CN111116147A (en) | Diatom ooze for efficient air purification and preparation method thereof | |
| CN111548112A (en) | Water purification type baking-free ceramsite and preparation method thereof | |
| CN110950421A (en) | MgO micro-sphere with high specific surface area and preparation method and application thereof | |
| CN112170847A (en) | Three-dimensional two-stage porous spongy titanium dioxide thin plate and preparation method thereof | |
| CN106698598A (en) | Anti-hardening iron-carbon-copper ternary electrolysis filler capable of efficiently removing oxytetracycline and preparation and application thereof | |
| US20230285947A1 (en) | Method for preparing modified natural wood material and application thereof in sewage treatment | |
| CN109233455B (en) | Diatom ooze coating with purification effect | |
| CN116371452A (en) | Efficient CO adsorption and reduction 2 Cs of (2) 2 CuBr 4 Photocatalyst | |
| CN114643057B (en) | Foam nickel-supported ferronickel bimetallic oxyhydroxide composite catalyst and preparation method and application thereof | |
| CN100556288C (en) | A kind of preparation method of visible light photocatalysis sterilization antimicrobials agent | |
| CN114653356B (en) | Preparation method of lanthanum-doped cerium oxide catalyst material and formaldehyde-removing compound | |
| CN110624496B (en) | Preparation method of porous boron nitride-based composite material for purifying organic wastewater | |
| CN214791751U (en) | Air purification structure containing rice hull silicon micro-reaction layer | |
| CN113350893A (en) | Method for manufacturing glass microporous gas and liquid filter material with catalytic degradation function | |
| CN105478106A (en) | Novel manganese dioxide-loaded ceramic-based catalyst and its preparation method and use | |
| CN111675425A (en) | Constructed wetland filler and preparation method thereof | |
| CN105772037B (en) | A kind of ultraviolet catalytic removes material of bromate and preparation method thereof in water removal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |