CN114395914A - Preparation method of self-cleaning fabric loaded with nano particles - Google Patents
Preparation method of self-cleaning fabric loaded with nano particles Download PDFInfo
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- 239000004744 fabric Substances 0.000 title claims abstract description 64
- 238000004140 cleaning Methods 0.000 title claims abstract description 37
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 66
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229920000728 polyester Polymers 0.000 claims abstract description 33
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 28
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 229920004933 Terylene® Polymers 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 claims description 10
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 6
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract description 11
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 229910000510 noble metal Inorganic materials 0.000 abstract description 7
- 239000004065 semiconductor Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 238000001465 metallisation Methods 0.000 abstract description 6
- 230000001699 photocatalysis Effects 0.000 abstract description 5
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- 238000001782 photodegradation Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 4
- 101710134784 Agnoprotein Proteins 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920004934 Dacron® Polymers 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/53—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with hydrogen sulfide or its salts; with polysulfides
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
- D06M11/64—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
- D06M11/65—Salts of oxyacids of nitrogen
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Catalysts (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a preparation method of a self-cleaning fabric loaded with nano particles, which comprises the following steps of PET alkali decrement treatment: adding NaOH into a beaker to prepare a NaOH aqueous solution, adding a polyester fabric, and heating; preparing a titanium dioxide polyester fabric; and (4) preparing the self-cleaning fabric. The self-cleaning fabric loaded with the nano particles prepared by the invention is loaded with the nano particles through the noble metal deposition and the compound semiconductor, and the energy required for exciting the cadmium sulfide is lower than that required for titanium dioxide when the noble metal deposition and the compound semiconductor are compounded. Thus, electrons excited by light can be transferred from the cadmium sulfide to the titanium dioxide, while holes remain in the cadmium sulfide. The occurrence of the process increases the electron separation and improves the photocatalysis effect, and the polyester fabric prepared by the method has good photodegradation effect.
Description
Technical Field
The invention belongs to the technical field of self-cleaning fabric preparation, and particularly relates to a preparation method of a self-cleaning fabric loaded with nano particles.
Background
TiO was discovered since 1972 by Fujishima and Honda2When irradiated, the internal structure of the material can continuously generate electron transition, thereby showing that the oxidation reduction reaction of water is continuously generated, and TiO2The application of the photocatalyst is always concerned, and TiO2The hole generated after illumination has strong oxidability, can react with organic matter macromolecules in a plurality of sewage, and has good degradation effect on pollutants which are difficult to remove, such as phenol, hydrocarbon, dye and the like in water and air. This has led to extensive research in the industry on the application of such materials in the treatment of water pollution. While studying, many deficiencies were also found, such as: due to the limitation of the structure, the method has the defects of narrow light wave absorption range, low catalytic efficiency, difficult operation in the recovery process and the like. In order to improve such a situation, efforts have been made to improve the situation by a method such as doping, noble metal precipitation, and semiconductor recombination.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
As one aspect of the present invention, a method for preparing a nanoparticle-loaded self-cleaning fabric is provided, which comprises the following steps:
step 1: and (3) PET alkali decrement treatment: adding NaOH into a beaker to prepare a NaOH aqueous solution, adding a polyester fabric, and heating;
step 2: preparing a titanium dioxide polyester fabric;
and step 3: preparing a self-cleaning fabric: preparing 0.1-0.3mol/L AgNO3、NaHB4、CdCl2、Na2S, mixing the solution; and (5) immersing the titanium dioxide polyester fabric for treatment.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: in the step 1, the concentration of the NaOH aqueous solution is 20-40 g/L.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: in the step 1, NaOH is added into a beaker to prepare NaOH aqueous solution, and the mixture is heated for 40-60min at 100 ℃.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: in the step 1, the concentration of the NaOH aqueous solution is 30-35g/L, and 15-20g of polyester fabric is added into 500-700ml of NaOH aqueous solution.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: in the step 2, taking a high-pressure reaction kettle as a reaction vessel, dissolving 0.1-0.5ml of tetrabutyl titanate in 5-10ml of absolute ethyl alcohol, adding 40-60ml of water to prepare 50-80ml of solution, stirring with a glass rod, taking 0.1-0.5g of terylene sample subjected to alkali decrement treatment, standing for 2-10min, then putting the high-pressure reaction kettle into a constant-temperature reactor, reacting at a constant temperature of 110-130 ℃ for 2-4h, taking out the terylene fabric after the reactor is cooled to room temperature, respectively cleaning in absolute ethyl alcohol and deionized water for 2-10min, finally shaking for 10-20min with a 1000W ultrasonic cleaner, and taking out and drying.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: and 3, treating the dipped titanium dioxide polyester fabric for 2-20 min.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: and 3, immersing the titanium dioxide polyester fabric for 4-6 min.
The preferable scheme of the preparation method of the self-cleaning fabric loaded with the nano particles is as follows: in the step 2, the isothermal reaction is carried out at the temperature of 110-130 ℃ for 2-4h, namely at the temperature of 120 ℃ for 3 h.
The invention has the beneficial effects that: the self-cleaning fabric loaded with the nano particles prepared by the invention is loaded with the nano particles through the noble metal deposition and the compound semiconductor, and the energy required for exciting the cadmium sulfide is lower than that required for titanium dioxide when the noble metal deposition and the compound semiconductor are compounded. Thus, electrons excited by light can be transferred from the cadmium sulfide to the titanium dioxide, while holes remain in the cadmium sulfide. The occurrence of the process increases the electron separation and improves the photocatalysis effect, and the polyester fabric prepared by the method has good photodegradation effect.
Drawings
FIG. 1 is a photo-catalytic result analysis of titanium dioxide dacron fabric loaded with Ag and CdS.
FIG. 2 is an infrared spectrum of a self-cleaning fabric.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below.
Example 1:
and (3) PET alkali decrement treatment: weighing 18g of NaOH in a beaker, dissolving the NaOH in 600ml of water to prepare a solution with the concentration of 30g/L, putting the solution into a water bath kettle, heating the solution to 100 ℃, putting 15g of terylene original sample into the heated solution, boiling the terylene original sample for 50min, taking out the terylene sample, washing the terylene sample with clear water, and airing the terylene sample for later use;
preparing a titanium dioxide polyester fabric: taking a high-pressure reaction kettle as a reaction container, dissolving 0.3ml of tetrabutyl titanate in 5ml of absolute ethyl alcohol, adding 45ml of water to prepare 50ml of solution, stirring by using a glass rod, putting 0.3g of polyester sample subjected to alkali decrement treatment in the solution, standing for 3min, putting the high-pressure reaction kettle in a constant-temperature reactor, reacting for 3h at the constant temperature of 120 ℃, taking out the polyester fabric after the reactor is cooled to the room temperature, respectively cleaning in absolute ethyl alcohol and deionized water for 5min, finally shaking for 10min by using a 1000W ultrasonic cleaner, taking out and drying for later use;
preparing a self-cleaning fabric: 100ml of AgNO with the concentration of 0.1mol/L is prepared3、NaHB4、CdCl2、Na2S mixMixing the solution; and soaking the titanium dioxide polyester fabric. FIG. 1 shows the photocatalytic result analysis of Ag and CdS loaded titanium dioxide polyester fabric, and the degradation rate of the titanium dioxide polyester fabric to different dyes is processed at different time when the titanium dioxide polyester fabric is irradiated under an ultraviolet lamp for 120 min. FIG. 2 is an infrared spectrum of a self-cleaning fabric.
TABLE 1 Infrared Spectroscopy of treated polyester samples
Example 2:
and (3) PET alkali decrement treatment: weighing 16g of NaOH in a beaker, dissolving the NaOH in 600ml of water to prepare a solution with the concentration of 25g/L, putting the solution into a water bath kettle, heating the solution to 100 ℃, putting 15g of terylene original sample into the heated solution, boiling the terylene original sample for 40min, taking out the terylene sample, washing the terylene sample with clear water, and airing the terylene sample for later use;
preparing a titanium dioxide polyester fabric: taking a high-pressure reaction kettle as a reaction container, dissolving 0.2ml of tetrabutyl titanate in 10ml of absolute ethyl alcohol, adding 40ml of water to prepare 55ml of solution, stirring by using a glass rod, putting 0.4g of polyester sample subjected to alkali decrement treatment in the solution, standing for 5min, putting the high-pressure reaction kettle in a constant-temperature reactor, reacting for 2h at the constant temperature of 120 ℃, taking out the polyester fabric after the reactor is cooled to the room temperature, respectively cleaning in absolute ethyl alcohol and deionized water for 5min, finally shaking for 15min by using a 1000W ultrasonic cleaner, taking out and drying for later use;
preparing a self-cleaning fabric: 100ml of AgNO with the concentration of 0.2mol/L is prepared3、NaHB4、CdCl2、Na2S, mixing the solution; and soaking the titanium dioxide polyester fabric.
Example 3:
and (3) PET alkali decrement treatment: weighing 20g of NaOH in a beaker, dissolving the NaOH in 700ml of water to prepare a solution with the concentration of 35g/L, putting the solution into a water bath kettle, heating the solution to 100 ℃, putting 20g of terylene original sample into the heated solution, boiling the terylene original sample for 60min, taking out the terylene sample, washing the terylene sample with clear water, and airing the terylene sample for later use;
preparing a titanium dioxide polyester fabric: taking a high-pressure reaction kettle as a reaction container, dissolving 0.5ml of tetrabutyl titanate in 10ml of absolute ethyl alcohol, adding 50ml of water to prepare 50ml of solution, stirring by using a glass rod, putting 0.5g of polyester sample subjected to alkali decrement treatment in the solution, standing for 2min, putting the high-pressure reaction kettle in a constant-temperature reactor, reacting at the constant temperature of 130 ℃ for 4h, taking out the polyester fabric after the reactor is cooled to the room temperature, respectively cleaning in absolute ethyl alcohol and deionized water for 10min, finally shaking for 20min by using a 1000W ultrasonic cleaner, taking out and drying for later use;
preparing a self-cleaning fabric: 100ml of AgNO with the concentration of 0.3mol/L is prepared3、NaHB4、CdCl2、Na2S, mixing the solution; and soaking the titanium dioxide polyester fabric.
The self-cleaning fabric loaded with the nano particles prepared by the invention is loaded with the nano particles through the noble metal deposition and the compound semiconductor, and the energy required for exciting the cadmium sulfide is lower than that required for titanium dioxide when the noble metal deposition and the compound semiconductor are compounded. Thus, electrons excited by light can be transferred from the cadmium sulfide to the titanium dioxide, while holes remain in the cadmium sulfide. The occurrence of the process increases the electron separation and improves the photocatalysis effect, and the polyester fabric prepared by the method has good photodegradation effect.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. A preparation method of a self-cleaning fabric loaded with nano particles is characterized by comprising the following steps: the method comprises the following steps:
step 1: and (3) PET alkali decrement treatment: adding NaOH into a beaker to prepare a NaOH aqueous solution, adding a polyester fabric, and heating;
step 2: preparing a titanium dioxide polyester fabric;
and step 3: preparing a self-cleaning fabric: preparing 0.1-0.3mol/L AgNO3、NaHB4、CdCl2、Na2S, mixing the solution; and (5) immersing the titanium dioxide polyester fabric for treatment.
2. The method of making a nanoparticle-loaded self-cleaning fabric of claim 1, wherein: in the step 1, the concentration of the NaOH aqueous solution is 20-40 g/L.
3. Method for the preparation of a nanoparticle-loaded self-cleaning fabric according to claim 1 or 2, characterized in that: in the step 1, NaOH is added into a beaker to prepare NaOH aqueous solution, and the mixture is heated for 40-60min at 100 ℃.
4. Method for the preparation of a nanoparticle-loaded self-cleaning fabric according to claim 1 or 2, characterized in that: in the step 1, the concentration of the NaOH aqueous solution is 30-35g/L, and 15-20g of polyester fabric is added into 500-700ml of NaOH aqueous solution.
5. Method for the preparation of a nanoparticle-loaded self-cleaning fabric according to claim 1 or 2, characterized in that: in the step 2, taking a high-pressure reaction kettle as a reaction vessel, dissolving 0.1-0.5ml of tetrabutyl titanate in 5-10ml of absolute ethyl alcohol, adding 40-60ml of water to prepare 50-80ml of solution, stirring with a glass rod, taking 0.1-0.5g of terylene sample subjected to alkali decrement treatment, standing for 2-10min, then putting the high-pressure reaction kettle into a constant-temperature reactor, reacting at a constant temperature of 110-130 ℃ for 2-4h, taking out the terylene fabric after the reactor is cooled to room temperature, respectively cleaning in absolute ethyl alcohol and deionized water for 2-10min, finally shaking for 10-20min with a 1000W ultrasonic cleaner, and taking out and drying.
6. Method for the preparation of a nanoparticle-loaded self-cleaning fabric according to claim 1 or 2, characterized in that: and 3, treating the dipped titanium dioxide polyester fabric for 2-20 min.
7. Method for the preparation of a nanoparticle-loaded self-cleaning fabric according to claim 1 or 2, characterized in that: and 3, immersing the titanium dioxide polyester fabric for 4-6 min.
8. The method of making a nanoparticle-loaded self-cleaning fabric of claim 5, wherein: in the step 2, the isothermal reaction is carried out at the temperature of 110-130 ℃ for 2-4h, namely at the temperature of 120 ℃ for 3 h.
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| CN114753146A (en) * | 2022-06-13 | 2022-07-15 | 江苏恒力化纤股份有限公司 | Preparation method of covalent bond cross-linked flame-retardant hydrophobic multifunctional polyester fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
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