CN117624736A - Preparation of composite material for resisting bacteria and removing peculiar smell, and product and application thereof - Google Patents
Preparation of composite material for resisting bacteria and removing peculiar smell, and product and application thereof Download PDFInfo
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- CN117624736A CN117624736A CN202311680584.7A CN202311680584A CN117624736A CN 117624736 A CN117624736 A CN 117624736A CN 202311680584 A CN202311680584 A CN 202311680584A CN 117624736 A CN117624736 A CN 117624736A
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- cellulose
- deionized water
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- stirring
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- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 241000894006 Bacteria Species 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920002678 cellulose Polymers 0.000 claims abstract description 48
- 239000001913 cellulose Substances 0.000 claims abstract description 48
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 claims abstract 2
- 238000012986 modification Methods 0.000 claims abstract 2
- 239000000243 solution Substances 0.000 claims description 44
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 32
- 239000008367 deionised water Substances 0.000 claims description 32
- 229910021641 deionized water Inorganic materials 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical group [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 28
- 230000000844 anti-bacterial effect Effects 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 239000002904 solvent Substances 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 17
- 239000004332 silver Substances 0.000 claims description 17
- 229960005070 ascorbic acid Drugs 0.000 claims description 16
- 235000010323 ascorbic acid Nutrition 0.000 claims description 16
- 239000011668 ascorbic acid Substances 0.000 claims description 16
- 239000002243 precursor Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 14
- 229920001046 Nanocellulose Polymers 0.000 claims description 12
- 150000001768 cations Chemical class 0.000 claims description 12
- 230000001877 deodorizing effect Effects 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 10
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 238000004108 freeze drying Methods 0.000 claims description 8
- 239000012691 Cu precursor Substances 0.000 claims description 6
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 6
- 229910001431 copper ion Inorganic materials 0.000 claims description 6
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- -1 silver ions Chemical class 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000875 Dissolving pulp Polymers 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- WIVXEZIMDUGYRW-UHFFFAOYSA-L copper(i) sulfate Chemical compound [Cu+].[Cu+].[O-]S([O-])(=O)=O WIVXEZIMDUGYRW-UHFFFAOYSA-L 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 244000144972 livestock Species 0.000 description 5
- 244000144977 poultry Species 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 241000192125 Firmicutes Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Abstract
The invention discloses a preparation method of a composite material for resisting bacteria and removing peculiar smell, a product and application thereof, and the preparation of functionalized cellulose is realized by carrying out surface modification on the composite material by utilizing the characteristics of large specific surface area and good solubility of cellulose. The method provided by the invention is simple to manufacture, low in cost and capable of realizing treatment of hydrogen sulfide and sterilization of common bacteria.
Description
Technical Field
The invention relates to the field of gas treatment, in particular to preparation of a composite material for resisting bacteria and removing peculiar smell, and a product and application thereof.
Background
The pollution of volatile gas in excrement to the environment is paid attention to gradually while the large-scale livestock and poultry cultivation provides high-quality food for us, wherein the hydrogen sulfide gas is particularly used, so that the livestock and poultry cultivation has foul smell, and the concentration aggregation also threatens the life safety. In addition, bacteria are easy to breed due to poor cultivation environment, so that huge property loss is caused by illness of livestock and poultry, and therefore, the cultivation efficiency is further improved by controlling the cultivation environment, and a necessary link for preventing environmental pollution is provided.
Traditional materials have single functions, poor odor removal capability and unsatisfactory antibacterial and bactericidal effects, can influence the livestock and poultry breeding environment, and have adverse effects on the growth of the livestock and poultry breeding environment. Aiming at the environmental use requirements of hydrogen sulfide removal in specific environments and bacteria easy to grow, the invention develops the composite material with antibacterial and deodorizing functions, wherein the composite material is in a powder state, can be arranged in a ventilating pipeline for gas treatment according to the use requirements, can be dissolved in deionized water again to prepare spray, and is used for removing hydrogen sulfide in specific environments and inhibiting bacteria and killing bacteria.
Disclosure of Invention
The invention aims to provide a preparation method of a composite material for resisting bacteria and removing peculiar smell.
Still another object of the present invention is: a composite product for antibacterial and deodorizing prepared by the above method is provided.
Yet another object of the present invention is: there is provided the use of the above product.
The invention aims at realizing the following scheme: a method for preparing a composite material for antibacterial and deodorizing, comprising the steps of:
step one: dissolving cellulose in deionized water and absolute ethyl alcohol;
the cellulose is water-soluble nano cellulose or micro cellulose; the volume ratio of deionized water to absolute ethyl alcohol is 10: 4-5; the mass content of cellulose in the deionized water and absolute ethyl alcohol composite solvent is 0.1-7%;
preferably, the mass content of the nanocellulose in the deionized water and absolute ethyl alcohol composite solvent is 0.1-3%;
preferably, the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent is 1-5%;
step two: dissolving silver precursor in deionized water, mixing with the solution obtained in the step one, and stirring in vacuum environment;
the silver precursor is silver nitrate, the molar concentration of the silver precursor is 0.1-2M, and the mass of the silver precursor is 0.5-2% of the mass of cellulose; the vacuum degree of the vacuum environment is 100-1500 Pa, and the stirring time is 30-60 min;
step three: adding copper precursor into the composite solution obtained in the step two, stirring for 30 min in a vacuum environment, adding ascorbic acid aqueous solution with the molar concentration of 0.05M, and stirring in the vacuum environment;
the copper precursor is at least one of copper chloride, copper sulfate and cuprous sulfate, and the mass ratio of the copper precursor to cellulose is 1-3: 100, wherein the vacuum degree of the vacuum environment in the step three is 100-1500 Pa, and the stirring time is 30-60 min;
the ratio of the total molar weight of the ascorbic acid to the silver to the copper is 1: 1-2;
step four: dissolving the powder obtained in the third step and freeze-drying the solution at the temperature of minus 80 ℃ to obtain powder;
the dried powder can be independently used for removing ammonia and hydrogen sulfide in a gas environment, and can also be re-dissolved in deionized water to be used for removing ammonia and hydrogen sulfide as spraying.
The invention also provides a composite material for resisting bacteria and removing peculiar smell, which is prepared by the method.
The invention also provides the application of the composite material for resisting bacteria and removing peculiar smell in the efficient removal of hydrogen sulfide and the sterilization of gram-positive bacteria and gram-negative bacteria.
The method provided by the invention is simple to manufacture, low in cost and capable of realizing treatment of hydrogen sulfide and sterilization of common bacteria.
Detailed Description
Example 1:
the composite material for resisting bacteria and removing peculiar smell is prepared by modifying the surface of cellulose with the characteristics of large specific surface area and good solubility to realize functional cellulose, and is prepared according to the following steps:
step one: according to the volume ratio of 10:4, adding nano cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the nano cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 0.1%, and uniformly stirring to obtain a cellulose solution;
step two: preparing a silver nitrate precursor solution with the molar concentration of 0.2M, adding deionized water as a solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 0.5% of that of nano cellulose, pumping the cavity environment to the vacuum degree of 200Pa, and stirring for 30 min to obtain a composite solution; then, the process is carried out,
step three: adding copper chloride into the obtained composite solution, wherein the mass ratio of the copper chloride to the nanocellulose is 2:100, then vacuum is adjusted to 200Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:1, wherein cations are the sum of silver ions and copper ions, pumping the vacuum degree to 300Pa, and continuously stirring for 60 minutes;
step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain freeze-dried powder.
The obtained powder is tested according to annex of national standard GBT 21510-2008 nanometer inorganic material antibacterial property detection method, the antibacterial rate of the composite material synthesized by the embodiment on escherichia coli is more than 99.999%, and the antibacterial rate on staphylococcus aureus is more than 99.999%.
The removal rate of hydrogen sulfide is 99.99%.
Example 2:
a composite for antibacterial and deodorizing, similar to the procedure of example 1, was prepared by the following steps:
step one: according to the volume ratio of 10:5, adding the micro cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 2%, and uniformly stirring to obtain a cellulose solution;
step two: preparing a silver nitrate precursor solution with the molar concentration of 0.1M, adding deionized water as a solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 0.2% of that of the micron cellulose, pumping the cavity environment to the vacuum degree of 300Pa, and stirring for 30 min to obtain a composite solution;
step three: adding copper sulfate into the composite solution obtained in the step two, wherein the mass ratio of the copper sulfate to the micro cellulose is 3:100, then vacuum is adjusted to 400 Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:1, wherein cations are the sum of silver ions and copper ions, pumping the vacuum degree to 300Pa, and continuously stirring for 60 minutes;
step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain freeze-dried powder.
The obtained powder is tested according to annex of national standard GBT 21510-2008 nanometer inorganic material antibacterial property detection method, the antibacterial rate of the composite material synthesized by the embodiment on escherichia coli is more than 99.999%, and the antibacterial rate on staphylococcus aureus is more than 99.999%.
The removal rate of hydrogen sulfide is about 99.999%.
Example 3:
a composite for antibacterial and deodorizing, similar to the procedure of example 1, was prepared by the following steps:
step one: according to the volume ratio of 10:5, adding the micro cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 7%, and uniformly stirring to obtain a cellulose solution;
step two: preparing silver nitrate precursor solution with molar concentration of 2M, adding deionized water as solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 1% of that of the micron cellulose, pumping the cavity environment to vacuum degree of 100Pa, and stirring for 30 min to obtain a composite solution;
step three, adding copper sulfate into the composite solution obtained in the step two, wherein the mass ratio of the copper sulfate to the micro cellulose is 3:100, then vacuum is adjusted to 400 Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:2, wherein the cation is the sum of silver ions and copper ions, pumping the vacuum degree to 200Pa, and continuously stirring for 60 minutes; then
Step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain powder.
The obtained powder is tested according to annex of national standard GBT 21510-2008 nanometer inorganic material antibacterial property detection method, the antibacterial rate of the composite material synthesized by the embodiment on escherichia coli is more than 99.999%, and the antibacterial rate on staphylococcus aureus is more than 99.999%.
The removal rate of hydrogen sulfide is about 99.999%.
Claims (10)
1. The preparation of the composite material for resisting bacteria and removing peculiar smell is characterized in that the surface modification of the cellulose is carried out to realize the functional cellulose by utilizing the characteristics of large specific surface area and good solubility of the cellulose, and the preparation method comprises the following steps:
step one: dissolving cellulose in a composite solvent of deionized water and absolute ethyl alcohol, wherein the cellulose is water-soluble nano cellulose or micro cellulose, so as to obtain a cellulose solution with the mass content of 0.1-7%;
step two: dissolving a silver precursor in deionized water, uniformly mixing the silver precursor with the cellulose solution obtained in the step one, wherein the mass of the silver precursor is 0.5-2% of that of the cellulose, and stirring the mixture in a vacuum environment with the vacuum degree of 100-1500 Pa for 30-60 min to obtain a composite solution;
step three: adding a copper precursor into the composite solution obtained in the step two, wherein the mass ratio of the copper precursor to the cellulose is 1-3: 100, stirring for 30 min in a vacuum environment, and adding an ascorbic acid aqueous solution with a molar concentration of 0.05 and M, wherein the total molar weight ratio of the ascorbic acid to the silver to the copper is 1: 1-2, stirring for 30-60 min in a vacuum environment, wherein the vacuum environment is 100-1500 Pa;
step four: and 3, freeze-drying the solution obtained in the step three and the freeze-dried powder at the temperature of minus 80 ℃ to obtain the composite material for resisting bacteria and removing peculiar smell.
2. Preparation of a composite material for antibacterial and deodorizing according to claim 1, characterized in that: step one; the volume ratio of deionized water to absolute ethyl alcohol is 10: 4-5;
the mass content of the nanocellulose in the deionized water and absolute ethyl alcohol composite solvent is 0.1-3%; or,
the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent is 1-5%.
3. Preparation of a composite material for antibacterial and deodorizing according to claim 1, characterized in that: in the second step, the silver precursor is silver nitrate, and the molar concentration of the silver precursor is 0.1-2M.
4. Preparation of a composite material for antibacterial and deodorizing according to claim 1, characterized in that: in the third step, the copper precursor is at least one of copper chloride, copper sulfate and cuprous sulfate.
5. Preparation of a composite material for antibacterial and deodorizing according to any one of claims 1 to 4, characterized by the following steps:
step one: according to the volume ratio of 10:4, adding nano cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the nano cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 0.1%, and uniformly stirring to obtain a cellulose solution;
step two: preparing a silver nitrate precursor solution with the molar concentration of 0.2M, adding deionized water as a solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 0.5% of that of nano cellulose, pumping the cavity environment to the vacuum degree of 200Pa, and stirring for 30 min to obtain a composite solution; then, the process is carried out,
step three: adding copper chloride into the obtained composite solution, wherein the mass ratio of the copper chloride to the nanocellulose is 2:100, then vacuum is adjusted to 200Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:1, wherein cations are the sum of silver ions and copper ions, pumping the vacuum degree to 300Pa, and continuously stirring for 60 minutes;
step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain freeze-dried powder.
6. Preparation of a composite material for antibacterial and deodorizing according to any one of claims 1 to 4, characterized by the following steps:
step one: according to the volume ratio of 10:5, adding the micro cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 2%, and uniformly stirring to obtain a cellulose solution;
step two: preparing a silver nitrate precursor solution with the molar concentration of 0.1M, adding deionized water as a solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 0.2% of that of the micron cellulose, pumping the cavity environment to the vacuum degree of 300Pa, and stirring for 30 min to obtain a composite solution;
step three: adding copper sulfate into the composite solution obtained in the step two, wherein the mass ratio of the copper sulfate to the micro cellulose is 3:100, then vacuum is adjusted to 400 Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:1, wherein cations are the sum of silver ions and copper ions, pumping the vacuum degree to 300Pa, and continuously stirring for 60 minutes;
step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain freeze-dried powder.
7. Preparation of a composite material for antibacterial and deodorizing according to any one of claims 1 to 4, characterized by the following steps:
step one: according to the volume ratio of 10:5, adding the micro cellulose into deionized water and absolute ethyl alcohol to enable the mass content of the micro cellulose in the deionized water and absolute ethyl alcohol composite solvent to be 7%, and uniformly stirring to obtain a cellulose solution;
step two: preparing silver nitrate precursor solution with molar concentration of 2M, adding deionized water as solvent into the cellulose solution obtained in the step one, wherein the mass of silver nitrate is 1% of that of the micron cellulose, pumping the cavity environment to vacuum degree of 100Pa, and stirring for 30 min to obtain a composite solution;
step three, adding copper sulfate into the composite solution obtained in the step two, wherein the mass ratio of the copper sulfate to the micro cellulose is 3:100, then vacuum is adjusted to 400 Pa, after stirring for 30 min, ascorbic acid is added, the molar ratio of ascorbic acid to cation is 1:2, wherein the cation is the sum of silver ions and copper ions, pumping the vacuum degree to 200Pa, and continuously stirring for 60 minutes; then
Step four: and (3) freeze-drying the solution obtained in the step (III) at the temperature of-80 ℃ to obtain powder.
8. A composite material for antibacterial and deodorizing purposes, characterized in that it is prepared according to the method of any one of claims 1 to 7.
9. Use of a composite material according to claim 8 for the efficient removal of hydrogen sulphide and for the disinfection of gram-positive and gram-negative bacteria.
10. The use according to claim 9, characterized in that: the method is used for removing ammonia and hydrogen sulfide in a gas environment alone or dissolved in deionized water again, and is used for removing ammonia and hydrogen sulfide as spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311680584.7A CN117624736A (en) | 2023-12-08 | 2023-12-08 | Preparation of composite material for resisting bacteria and removing peculiar smell, and product and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311680584.7A CN117624736A (en) | 2023-12-08 | 2023-12-08 | Preparation of composite material for resisting bacteria and removing peculiar smell, and product and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117624736A true CN117624736A (en) | 2024-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311680584.7A Pending CN117624736A (en) | 2023-12-08 | 2023-12-08 | Preparation of composite material for resisting bacteria and removing peculiar smell, and product and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117624736A (en) |
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2023
- 2023-12-08 CN CN202311680584.7A patent/CN117624736A/en active Pending
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