CN109098040B - Preparation method of functional filter paper loaded with nano zinc oxide - Google Patents
Preparation method of functional filter paper loaded with nano zinc oxide Download PDFInfo
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- CN109098040B CN109098040B CN201810962089.8A CN201810962089A CN109098040B CN 109098040 B CN109098040 B CN 109098040B CN 201810962089 A CN201810962089 A CN 201810962089A CN 109098040 B CN109098040 B CN 109098040B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
Abstract
The invention discloses a preparation method of functional filter paper loaded with nano zinc oxide, which comprises the following steps: 1) preparing a zinc chloride solution with the mass concentration of 45-65%; 2) heating the zinc chloride solution to 55-85 ℃, completely immersing clean filter paper in the zinc chloride solution, taking out after soaking for 30s-2min, washing the filter paper with deionized water, and drying to obtain a filter paper substrate; 3) adding materials accounting for 60-80% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the materials are prepared by mixing the filter paper substrate in the step (2) and an alkali solution according to the following dosage proportion: 10-20g of filter paper substrate and 50-100ml of alkali solution; and then sealing the reaction kettle, reacting for 8-36h at the temperature of 80-180 ℃, cooling, taking out the filter paper, washing with deionized water, and drying to obtain the functional filter paper loaded with the nano zinc oxide. The functional filter paper loaded with the nano zinc oxide has better photocatalytic antibacterial performance, can enable nano zinc oxide crystals to grow on fibers of a filter paper substrate, avoids secondary pollution, can be repeatedly utilized, and can be widely applied to the field of water body purification and treatment.
Description
Technical Field
The invention relates to the field of preparation of nano materials, in particular to a preparation method of functional filter paper loaded with nano zinc oxide.
Background
The filter paper is composed of criss-cross fibers, and the unique three-dimensional network structure enables the filter paper to have a large surface area and a porous structure, endows the filter paper with good mechanical properties and dimensional stability, and can be used in the fields of solid/liquid filtration separation, water body purification and the like. In the actual application process, with the progress of nanotechnology and the improvement of water treatment standards, some nanometer materials are functionalized on the surface of the filter paper fiber, and the filter paper with special functions is prepared to show a larger development prospect. The common filter paper fiber functionalization methods are usually a physical adhesion method and a chemical modification method, and the bonding strength between the nano material modified by the methods and the paper fiber is relatively weak, so that an effective method for loading the nano material on the fiber surface needs to be found.
As a new material of nanotechnology, the nano zinc oxide not only has the surface effect, the quantum size effect and the like which are unique to the nano material, but also has the advantages of optics, electrics, catalysis and the like of the zinc oxide, so that the nano zinc oxide has important application value in many fields. The nano zinc oxide is combined with cellulose fibers to prepare the functional filter paper loaded with the nano zinc oxide, so that the paper has better antibacterial performance and photocatalytic degradation performance, and the application of the cellulose-based filter material in the fields of water purification and water treatment is expanded.
At present, the preparation process of the functional filter paper loaded with nano zinc oxide mainly has two approaches: (1) preparing nano ZnO by a conventional hydrothermal method, and compounding the nano ZnO on a cellulose substrate by mixing the nano ZnO with cellulose. However, the bonding strength between the nano ZnO and the cellulose fiber is low, so that the compounding capacity of the nano ZnO on the cellulose is low, and the nano particles inevitably enter the environment to cause secondary pollution, so that the application effect is not ideal; (2) soaking the cellulose substrate in ZnO precursor solution to lead Zn to be2+And the ZnO crystal interacts with the cellulose to ensure that the ZnO crystal directly nucleates and grows on the cellulose substrate. The method has the problems that the operation steps are complex, the reaction accessibility of the ZnO precursor and the cellulose is low, the composite amount and the composite strength of the nano ZnO on the cellulose are limited, and the cellulose carrier does not participate in the control of the size and the shape of the nano ZnO crystal. At present, the preparation process of the functional filter paper loaded with the nano zinc oxide is simplified, the fine structure and the unique performance which are difficult to obtain by the conventional means are realized, and the method has great significance for developing green nano functional materials.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of the functional filter paper loaded with nano zinc oxide, wherein nano zinc oxide crystals are grown on the surface of the fiber of the filter paper, so that the nano zinc oxide crystals are firmly fixed on the surface of the filter paper, the filter paper is ensured to have better water filtering performance and excellent antibacterial performance, and adverse effects caused by the fact that nano particles enter an ecological system along with a treated water body in a dispersion form are avoided.
The invention solves the technical problems by the following technical scheme:
the invention relates to a preparation method of functional filter paper loaded with nano zinc oxide, which comprises the following operation steps:
(1) preparing a zinc chloride solution: dissolving zinc chloride powder in deionized water to prepare a zinc chloride solution with the mass concentration of 45-65%;
(2) preparing a filter paper substrate: heating the zinc chloride solution prepared in the step (1) to 55-85 ℃, completely immersing clean filter paper in the zinc chloride solution, taking out after soaking for 30s-2min, washing the taken-out filter paper with deionized water until no Zn exists in a washing solution2+Drying in an oven at 50 ℃ for 24h to prepare a filter paper substrate;
(3) preparing functional filter paper loaded with nano zinc oxide: adding a material accounting for 60-80% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the material is prepared by mixing the filter paper substrate prepared in the step (2) and an alkali solution according to the following dosage proportion: 10-20g of filter paper substrate and 50-100ml of alkaline solution; and then sealing the reaction kettle, reacting for 8-36h at the temperature of 80-180 ℃, cooling, taking out the filter paper, washing with deionized water until the pH value is 7, and drying for 12h at the temperature of 105 ℃ to obtain the functional filter paper loaded with the nano zinc oxide.
The filter paper in the step (2) has the quantitative content of 80-140g/m2The cotton fiber filter paper of (1).
In the step (3), the aqueous alkali comprises a sodium hydroxide aqueous solution, an ammonia aqueous solution and a urea aqueous solution.
In the step (3), the pH value of the alkali solution is 9-12.
The method of the invention has the following beneficial effects:
1. the method can ensure that the nano zinc oxide crystals can directly grow on the filter paper fibers, so that the nano zinc oxide crystals are firmly fixed on the surface of the filter paper, thereby ensuring that the filter paper has better water filtering performance and simultaneously endowing the filter paper with excellent antibacterial performance, and simultaneously avoiding adverse effects caused by the fact that nano particles enter an ecological system along with a treated water body in a dispersion form.
2. The preparation method disclosed by the invention is simple in preparation process, easy to obtain the adopted raw materials, economic and environment-friendly in preparation process, convenient to recover and capable of fixing the nano zinc oxide crystals, and meanwhile, the functional paper can be repeatedly utilized after being cleaned, so that the utilization rate of the nano zinc oxide is improved, and the preparation method has an important significance in expanding the industrial application range of the nano zinc oxide functional paper.
Drawings
Fig. 1 is a scanning electron microscope image of the functional paper loaded with nano zinc oxide prepared in example 1.
Fig. 2 is a scanning electron microscope image of the functional paper loaded with nano zinc oxide prepared in example 2.
FIG. 3 is a scanning electron microscope image of the functional paper loaded with nano-zinc oxide prepared in example 3.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1
A preparation method of functional filter paper loaded with nano zinc oxide comprises the following operation steps:
(1) preparation of zinc chloride solution for impregnation: weighing 45g of zinc chloride powder, dissolving the zinc chloride powder in 55g of deionized water, heating and stirring until the zinc chloride powder is completely dissolved to prepare a 45% zinc chloride solution;
(2) preparing a filter paper substrate: heating the zinc chloride solution prepared in the step (1) to 55 ℃, and then quantifying 80g/m2The cotton fiber filter paper is put into zinc chloride solution to completely immerse the filter paper, the filter paper is taken out after being soaked for 30s, and the taken-out filter paper is washed by deionized water until the washing solution does not contain Zn any more2+Existing, dried in an oven at 50 ℃ for 24 h.
(3) Preparing functional filter paper loaded with nano zinc oxide: adding materials accounting for 60% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the materials are prepared according to the following mixture ratio: 10g of the filter paper substrate prepared in the step (2) is 50ml of sodium hydroxide aqueous solution with the pH value of 10; sealing the reaction kettle, reacting for 8 hours at the temperature of 80 ℃, cooling, taking out the filter paper, washing with deionized water until the pH value is 7, and drying for 12 hours at the temperature of 105 ℃ to obtain the functional filter paper loaded with the nano zinc oxide;
the antibacterial experiment is carried out on the functional filter paper loaded with the nano zinc oxide, and the result shows that the antibacterial rate of the functional filter paper to escherichia coli and listeria is 77.3%. The bacteria-containing water is filtered by the filter paper with the function of loading the nano zinc oxide, the water filtering performance is good, and the pure water flux is 286.8 L.s-1m-2After being repeatedly used for 20 times, the filter still has good filtering effect and bacteriostatic effect.
Example 2
A preparation method of functional filter paper loaded with nano zinc oxide comprises the following operation steps:
(1) preparation of zinc chloride solution for impregnation: weighing 55g of zinc chloride powder, dissolving the zinc chloride powder in 45g of deionized water, heating and stirring until the zinc chloride powder is completely dissolved to prepare a 55% zinc chloride solution;
(2) preparing a filter paper substrate: heating the zinc chloride solution prepared in the step (1) to 70 ℃, and then quantitatively determining the zinc chloride solution to be 110g/m2The cotton fiber filter paper is put into zinc chloride solution to completely immerse the filter paper, the filter paper is taken out after being soaked for 1min, and the taken-out filter paper is washed by deionized water until the washing solution does not contain Zn any more2+Existing, dried in an oven at 50 ℃ for 24 h.
(3) Preparing functional filter paper loaded with nano zinc oxide: adding materials accounting for 70% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the materials are prepared according to the following mixture ratio: 15g of the filter paper substrate prepared in the step (2) is 75ml of urea aqueous solution with the pH value of 11; sealing the reaction kettle, reacting for 18h at 120 ℃, cooling, taking out the filter paper, washing with deionized water until the pH value is 7, and drying for 12h at 105 ℃ to obtain the functional filter paper loaded with nano zinc oxide;
nano oxidation of the loadThe zinc functional filter paper is subjected to an antibacterial experiment, and the result shows that the antibacterial rate of the zinc functional filter paper to escherichia coli and listeria is 89.9%. The bacteria-containing water is filtered by the filter paper with the function of loading the nano zinc oxide, the water filtering performance is good, and the pure water flux is 260.5 L.s-1m-2After being repeatedly used for 20 times, the filter still has good filtering effect and bacteriostatic effect.
Example 3
A preparation method of functional filter paper loaded with nano zinc oxide comprises the following operation steps:
(1) preparation of zinc chloride solution for impregnation: weighing 65g of zinc chloride powder, dissolving the zinc chloride powder in 35g of deionized water, heating and stirring until the zinc chloride powder is completely dissolved to prepare a 65% zinc chloride solution;
(2) preparing a filter paper substrate: heating the zinc chloride solution prepared in the step (1) to 85 ℃, and then quantifying 140g/m2The cotton fiber filter paper is put into a zinc chloride solution to completely immerse the filter paper, the filter paper is taken out after being soaked for 2min, and the taken-out filter paper is washed by deionized water until Zn is not contained in a washing solution2+Existing, dried in an oven at 50 ℃ for 24 h.
(3) Preparing functional filter paper loaded with nano zinc oxide: adding materials accounting for 80% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the materials are prepared according to the following mixture ratio: 20g of the filter paper substrate prepared in the step (2) is 100ml of ammonia water solution with the pH value of 12; sealing the reaction kettle, reacting for 36h at 180 ℃, cooling, taking out the filter paper, washing with deionized water to obtain a pH value of 7, and drying at 105 ℃ for 12h to obtain the functional filter paper loaded with the nano zinc oxide;
the antibacterial experiment is carried out on the functional filter paper loaded with the nano zinc oxide, and the result shows that the antibacterial rate of the functional filter paper to escherichia coli and listeria is 95.7%. The bacteria-containing water is filtered by the filter paper with the function of loading the nano zinc oxide, the water filtering performance is good, and the pure water flux is 306.5 L.s-1m-2After being repeatedly used for 20 times, the filter still has good filtering effect and bacteriostatic effect.
Claims (3)
1. A preparation method of functional filter paper loaded with nano zinc oxide is characterized by comprising the following operation steps:
(1) preparing a zinc chloride solution: dissolving zinc chloride powder in deionized water to prepare a zinc chloride solution with the mass concentration of 45-65%;
(2) preparing a filter paper substrate: heating the zinc chloride solution prepared in the step (1) to 55-85 ℃, completely immersing clean filter paper in the zinc chloride solution, taking out after soaking for 30s-2min, washing the taken-out filter paper with deionized water until no Zn exists in a washing solution2+Drying in an oven at 50 ℃ for 24h to prepare a filter paper substrate; the clean filter paper has the quantitative content of 80-140g/m2The cotton fiber filter paper of (1);
(3) preparing functional filter paper loaded with nano zinc oxide: adding a material accounting for 60-80% of the volume of the reaction kettle into a polytetrafluoroethylene hydrothermal reaction kettle, wherein the material is prepared by mixing the filter paper substrate prepared in the step (2) and an alkali solution according to the following dosage proportion: 10-20g of filter paper substrate and 50-100ml of alkaline solution; and then sealing the reaction kettle, reacting for 8-36h at the temperature of 80-180 ℃, cooling, taking out the filter paper, washing with deionized water until the pH value is 7, and drying for 12h at the temperature of 105 ℃ to obtain the functional filter paper loaded with the nano zinc oxide.
2. The preparation method of the functional filter paper loaded with nano zinc oxide according to claim 1, which is characterized by comprising the following steps: in the step (3), the alkali solution comprises a sodium hydroxide aqueous solution, an ammonia aqueous solution and a urea aqueous solution.
3. The preparation method of the functional filter paper loaded with nano zinc oxide according to claim 1 or 2, which is characterized by comprising the following steps: in the step (3), the pH value of the alkali solution is 9-12.
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| CN109440524A (en) * | 2018-10-15 | 2019-03-08 | 广西大学 | A kind of preparation method of supported nano zinc oxide anti-bacteria paper |
| CN114134705A (en) * | 2021-11-23 | 2022-03-04 | 福建农林大学 | Antibacterial and antiviral plant fiber prepared by using zinc chloride/urea eutectic system, and method and application thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691204A (en) * | 2012-05-30 | 2012-09-26 | 南通大学 | Preparation method of nano-zinc-oxide-loaded antibacterial ultraviolet-resistant fibers or textiles |
| CN102898681A (en) * | 2012-09-27 | 2013-01-30 | 河南科技大学 | Loaded type nano-zinc oxide composite material |
| CN103194885A (en) * | 2013-04-19 | 2013-07-10 | 中国民航大学 | Method for microwave synthesis of nano-ZnO assembled cotton fibers |
| CN105442298A (en) * | 2015-12-17 | 2016-03-30 | 浙江理工大学 | Preparation method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide |
| CN105854949A (en) * | 2015-01-23 | 2016-08-17 | 中国科学院宁波材料技术与工程研究所 | Cellulose/nano zinc oxide composite material and preparation method and application thereof |
| CN106243786A (en) * | 2016-07-29 | 2016-12-21 | 贵州大学 | A kind of preparation method of the fabric ultraviolet resistant of simple and efficient |
| CN106835673A (en) * | 2017-03-27 | 2017-06-13 | 广西科技大学 | A kind of UV resistance zinc oxide silk composite fiber and preparation method thereof |
| CN107237043A (en) * | 2017-06-23 | 2017-10-10 | 苏州大学 | Load the preparation method of the tunica fibrosa of oriented zinc oxide nanometer rods |
| CN108355636A (en) * | 2018-03-20 | 2018-08-03 | 商丘师范学院 | A kind of high efficiency preparation method of carbon doped zinc oxide nano composite material |
-
2018
- 2018-08-22 CN CN201810962089.8A patent/CN109098040B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691204A (en) * | 2012-05-30 | 2012-09-26 | 南通大学 | Preparation method of nano-zinc-oxide-loaded antibacterial ultraviolet-resistant fibers or textiles |
| CN102898681A (en) * | 2012-09-27 | 2013-01-30 | 河南科技大学 | Loaded type nano-zinc oxide composite material |
| CN103194885A (en) * | 2013-04-19 | 2013-07-10 | 中国民航大学 | Method for microwave synthesis of nano-ZnO assembled cotton fibers |
| CN105854949A (en) * | 2015-01-23 | 2016-08-17 | 中国科学院宁波材料技术与工程研究所 | Cellulose/nano zinc oxide composite material and preparation method and application thereof |
| CN105442298A (en) * | 2015-12-17 | 2016-03-30 | 浙江理工大学 | Preparation method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide |
| CN106243786A (en) * | 2016-07-29 | 2016-12-21 | 贵州大学 | A kind of preparation method of the fabric ultraviolet resistant of simple and efficient |
| CN106835673A (en) * | 2017-03-27 | 2017-06-13 | 广西科技大学 | A kind of UV resistance zinc oxide silk composite fiber and preparation method thereof |
| CN107237043A (en) * | 2017-06-23 | 2017-10-10 | 苏州大学 | Load the preparation method of the tunica fibrosa of oriented zinc oxide nanometer rods |
| CN108355636A (en) * | 2018-03-20 | 2018-08-03 | 商丘师范学院 | A kind of high efficiency preparation method of carbon doped zinc oxide nano composite material |
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