CN112251831A - Sterilization self-cleaning photocatalyst fiber and preparation method and application thereof - Google Patents
Sterilization self-cleaning photocatalyst fiber and preparation method and application thereof Download PDFInfo
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- CN112251831A CN112251831A CN202011240796.XA CN202011240796A CN112251831A CN 112251831 A CN112251831 A CN 112251831A CN 202011240796 A CN202011240796 A CN 202011240796A CN 112251831 A CN112251831 A CN 112251831A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a preparation method of a sterilizing self-cleaning photocatalyst fiber, which comprises the following specific steps: step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water; step 2, transferring the mixed solution A into a high-pressure reaction kettle; step 3, preparing to obtain Bi2WO6A sample; step 4, AgNO preparation3A solution; step 5, adding Bi2WO6Adding to AgNO3Obtaining a solution B in the solution; step 6, illuminating under the irradiation of a xenon lamp; step 7, obtaining Bi2WO6Sol sample; step 8, drying the final product; step 9, preparing a photocatalyst emulsion; step 10, adopting the photocatalyst emulsion to carry out electrostatic spinning to obtain Ag/Bi2WO6Sample photocatalyst fibers. Also provides the sterilization self-cleaning photocatalyst fiber and application thereof. TheThe fiber has bactericidal and self-cleaning properties.
Description
Technical Field
The invention belongs to the technical field of textile engineering, and particularly relates to a sterilization self-cleaning photocatalyst fiber, and a preparation method and application thereof.
Background
With the development of science and technology, environmental and energy problems become more and more serious, the pursuit of people for health is increasing, and textiles with sterilization and self-cleaning performances are particularly important. The textile with self-cleaning performance can repel water and repel oil, resist bacteria and remove mites, resist wrinkle and wash-and-wear, prevent mildew and moth, resist flame and explosion, shield ultraviolet and resist electromagnetic radiation. There are generally two ways to make textiles with self-cleaning properties, i.e. either to form a superhydrophobic surface or to form a photocatalytic surface. The super-hydrophobic surface is formed according to the lotus leaf effect, and a layer of nano coating is formed on the surface of the finished textile, so that the water and oil repellent performance is obtained. The photocatalytic surface is formed, due to the photocatalytic oxidation performance of the nano particles, under the irradiation of natural light, the nano particles with the photocatalytic performance generate electron-hole pairs under the excitation of light with specific wavelength, and then contact with external water and oxygen to generate an oxidation-reduction reaction to form superoxide radical and hydroxyl radical, and the obtained active substance has super-strong oxidation capacity, can oxidize and decompose various organic matters, and even has the capacity of inhibiting and killing bacteria and viruses. In addition, the self-sterilization performance of the silver ions is utilized, and the photocatalyst containing the silver ions is added into the fiber, so that the fiber has sterilization and self-cleaning performances.
Disclosure of Invention
The invention aims to provide a sterilization self-cleaning photocatalyst fiber, which utilizes the self sterilization performance of silver ions to add a photocatalyst containing the silver ions into the fiber, so that the fiber has sterilization and self-cleaning performances.
The second purpose of the invention is to provide a preparation method of the sterilizing self-cleaning photocatalyst fiber.
The third purpose of the invention is to provide an application of the sterilizing self-cleaning photocatalyst fiber.
The first technical scheme adopted by the invention is that the preparation method of the sterilizing self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature of 120-220 ℃ for 2-48 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.01-1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
step 6, after the solution B is stirred to be in a uniform state, illuminating for 0.5-10 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
The present invention is also characterized in that,
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 1.7-170.
In step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 0.1-10: 0.01-1: 0.1 to 10.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 0.1-10M, and the molar concentration of CTAB is as follows: 0.01 to 1M.
The second technical scheme adopted by the invention is that the sterilizing self-cleaning photocatalyst fiber is prepared by adopting the preparation method of the sterilizing self-cleaning photocatalyst fiber.
According to the third technical scheme, the sterilization self-cleaning photocatalyst fiber is applied, and the photocatalyst containing silver ions is added into the fiber, so that the fiber has sterilization and self-cleaning performances.
The invention has the beneficial effects that: the self-cleaning sterilization photocatalyst fiber provided by the invention utilizes the self-sterilization performance of silver ions, and the photocatalyst containing the silver ions is added into the fiber, so that the fiber has sterilization and self-cleaning performances.
Drawings
FIG. 1 shows a self-cleaning antibacterial photocatalyst fiber, its preparation method and Ag/Bi prepared in application example 12WO6Scanning electron microscope pictures of the sample;
FIG. 2 shows a bactericidal self-cleaning photocatalyst fiber of the present invention, its preparation method and Bi prepared in application example 12WO6And Ag/Bi2WO6An XRD spectrum of the sample;
FIG. 3 shows a self-cleaning germicidal light touch device in accordance with the present inventionMedium fiber and Bi prepared in example 1 of preparation method and application thereof2WO6And Ag/Bi2WO6Evaluation graph of photocatalytic degradation rhodamine B of the sample.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a preparation method of a sterilizing self-cleaning photocatalyst fiber, which comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature of 120-220 ℃ for 2-48 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.01-1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 1.7-170.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 0.5-10 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene terephthalateEsters and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 0.1-10: 0.01-1: 0.1 to 10.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 0.1-10M, and the molar concentration of CTAB is as follows: 0.01 to 1M.
The invention also provides the sterilizing self-cleaning photocatalyst fiber which is prepared by the preparation method of the sterilizing self-cleaning photocatalyst fiber.
The invention also provides application of the sterilization self-cleaning photocatalyst fiber, and the sterilization self-cleaning photocatalyst fiber adds the photocatalyst containing silver ions into the fiber, so that the fiber has sterilization and self-cleaning performances.
Example 1
A preparation method of a sterilization self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature of 120 ℃ for 2 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.01M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 1.7.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 0.5h under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to hexafluoroisopropanol is 0.1: 0.01: 0.1.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 0.1M, molar concentration of CTAB: 0.01M.
FIG. 1 shows Ag/Bi obtained in this example2WO6Scanning electron microscope picture of sample, from which the prepared Ag/Bi2WO6The sample exhibited a two-dimensional sheet-like structure.
FIG. 2 shows Bi prepared in this example2WO6And Ag/Bi2WO6XRD pattern of the sample, from which it can be observed,prepared Bi2WO6And Ag/Bi2WO6The sample was free of impurities.
FIG. 3 shows Bi produced2WO6And Ag/Bi2WO6The photocatalytic degradation spectrum of the sample can be seen, and the prepared Ag/Bi2WO6The photocatalytic activity of the sample is superior to that of pure Bi2WO6。
Example 2
A preparation method of a sterilization self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature at 220 ℃ for 48 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 170.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 10 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
step 9,Mixing a certain amount of polyethylene terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 10: 1: 10.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 10M, molar concentration of CTAB: 1M.
Example 3
A preparation method of a sterilization self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature at 200 ℃ for 24 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.5M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3Mass ofThe ratio is 1161: 20.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 5 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 5: 0.05: 0.5.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 5M, molar concentration of CTAB: 0.05M.
Example 4
A preparation method of a sterilization self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature at 150 ℃ for 22 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurities exist to obtain Bi2WO6A sample;
step 4, preparing 0.01-1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 20.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 5 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to hexafluoroisopropanol is 0.1: 0.01: 0.6.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 10M, molar concentration of CTAB: 0.01M.
Example 5
A preparation method of a sterilization self-cleaning photocatalyst fiber comprises the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
in step 1, Na2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature at 120 ℃ for 48 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.01-1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
in step 5, in the solution B, Bi2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 170.
Step 6, after the solution B is stirred to be in a uniform state, illuminating for 0.5h under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
in step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 10: 0.01: 0.1.
In the step 10, in the aqueous solution formed by NaOH and CTAB, the molar concentration of NaOH is as follows: 0.1M, molar concentration of CTAB: 0.01M.
Claims (7)
1. A preparation method of a sterilization self-cleaning photocatalyst fiber is characterized by comprising the following specific steps:
step 1, preparing Na according to a certain mass ratio2WO4.2H2O、Bi(NO3)3.5H2A mixed solution A of O and water;
step 2, transferring the mixed solution A into a polytetrafluoroethylene high-pressure reaction kettle, and keeping the temperature of 120-220 ℃ for 2-48 hours;
step 3, after the reaction is finished, naturally cooling to room temperature, centrifuging the product, and washing with deionized water until no impurity exists to obtain Bi2WO6A sample;
step 4, preparing 0.01-1M AgNO3A solution;
step 5, a certain amount of Bi synthesized in the step 32WO6Adding into AgNO prepared in step 43Stirring the solution to be uniform to obtain a solution B;
step 6, after the solution B is stirred to be in a uniform state, illuminating for 0.5-10 hours under the irradiation of a xenon lamp;
step 7, washing with deionized water until no impurities exist to obtain Bi2WO6Sol sample;
step 8, drying the final product at 50-80 ℃ for 5-20 h to obtain Ag/Bi2WO6A sample;
9, adding a certain amount of polyethylene glycol terephthalate and Ag/Bi2WO6Adding the samples into a certain amount of hexafluoroisopropanol together, and performing ultrasonic dispersion to prepare a photocatalyst emulsion;
step 10, adopting photocatalyst emulsion to carry out electrostatic spinning, putting the product into an aqueous solution formed by NaOH and CTAB to carry out water bath heating, then washing the product after the water bath heating by using deionized water and absolute ethyl alcohol, and finally drying to obtain the Ag/Bi2WO6Sample photocatalyst fibers.
2. The method for preparing the sterilizing self-cleaning photocatalyst fiber as claimed in claim 1, wherein in the step 1, Na is added2WO4.2H2O、Bi(NO3)3.5H2The mass ratio of O to water is 1: 3: 100.
3. the method for preparing the bactericidal self-cleaning photocatalyst fiber as claimed in claim 1, wherein in the step 5, in the solution B, Bi is added2WO6With AgNO3The mass ratio of (A) to (B) is 1161: 1.7-170.
4. The method for preparing the sterilizing self-cleaning photocatalyst fiber as claimed in claim 1, wherein in the step 9, polyethylene terephthalate, Ag/Bi2WO6The mass ratio of the sample to the hexafluoroisopropanol is 0.1-10: 0.01-1: 0.1 to 10.
5. The method for preparing photocatalyst fiber with bactericidal and self-cleaning functions as claimed in claim 1, wherein in the step 10, the molar concentration of NaOH in the aqueous solution formed by NaOH and CTAB is as follows: 0.1-10M, and the molar concentration of CTAB is as follows: 0.01 to 1M.
6. A sterilizing self-cleaning photocatalyst fiber which is characterized by being prepared by the preparation method of the sterilizing self-cleaning photocatalyst fiber of any one of claims 1 to 5.
7. The use of the bactericidal self-cleaning photocatalyst fiber as claimed in claim 6, wherein the bactericidal self-cleaning photocatalyst fiber is prepared by adding a photocatalyst containing silver ions to the fiber, so that the fiber has bactericidal and self-cleaning properties.
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