CN110255672B - electro-Fenton cathode membrane material with aeration function and preparation method and application thereof - Google Patents
electro-Fenton cathode membrane material with aeration function and preparation method and application thereof Download PDFInfo
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- CN110255672B CN110255672B CN201910553302.4A CN201910553302A CN110255672B CN 110255672 B CN110255672 B CN 110255672B CN 201910553302 A CN201910553302 A CN 201910553302A CN 110255672 B CN110255672 B CN 110255672B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
Abstract
The invention discloses a method for aerationThe functional electro-Fenton cathode membrane material and the preparation method and the application thereof are characterized in that melt-blown polyphenylene sulfide superfine fiber non-woven fabric is used as base cloth, dispersion liquid of carbon black and polyethylene wax is infiltrated into the polyphenylene sulfide superfine fiber base cloth in a spraying mode, and then the sprayed polyphenylene sulfide superfine fiber base cloth is subjected to heat setting and hot rolling treatment to obtain the electro-Fenton cathode membrane which is used in an electro-Fenton reaction system. When in use, one side of the membrane is connected with air, the other side of the membrane is connected with wastewater, and the side of the membrane is connected with air and aerated to the other side, so that the generation of H by cathode oxygen reduction can be effectively accelerated2O2And the cleaning capacity of organic pollutants is improved. The electro-Fenton cathode membrane prepared by the invention has good air permeability, heat resistance, chemical stability, mechanical property and reusability.
Description
Technical Field
The invention belongs to the field of preparation of electrocatalysis electrodes, and particularly relates to an electro-Fenton cathode membrane material with an aeration function, and a preparation method and application thereof.
Background
With the increasing severity of the Chinese water environment situation and the improvement of the wastewater discharge standard of industries such as papermaking, printing and dyeing, pharmacy and the like, the traditional wastewater advanced treatment process has been difficult to meet the requirement of pollutant removal. electro-Fenton technique, since it allows the in situ generation of hydrogen peroxide (H) by cathodic redox reactions2O2) With added Fe2+The reaction generates hydroxyl free radical (. OH) with strong oxidizing capability, which can degrade organic pollutants in water rapidly and efficiently without selectivity, thereby attracting wide attention of people. How to realize the efficient in-situ generation of H by the electro-Fenton cathode2O2Is a key problem in the technical research field, and the cathode material is H2O2The decisive factor of high-efficiency in-situ generation. The carbon material has good stability, conductivity, no toxicity, high hydrogen evolution potential and high hydrogen evolution potential2O2Has low catalytic activity, and thus is widely used in research on cathode materials.
The invention relates to a method for activating a graphite felt applied to an electro-Fenton system cathode, which is disclosed in 26/11/2014 of Chinese patent, and the method comprises the steps of uniformly mixing the graphite felt with strong alkaline oxidants such as sodium hydroxide and potassium hydroxide, and carrying out high-temperature treatment under the protection of inert atmosphere to obtain the activated graphite felt. The prepared graphite felt is used as a cathode material and applied to an electro-Fenton system, and can effectively promote the generation of H by cathode oxygen reduction2O2The electrocatalytic activity of the reaction obviously improves the degradation capability of organic pollutants, and the activated material has excellent stability and reusability. However, the method needs high-temperature treatment at the temperature of 700-. Chinese patent CN106587277A, published in 2017, 4, 26, entitled "heterogeneous tubular membrane electrode of carbon black-nano iron oxide/polytetrafluoroethylene" is invented, which forms an active catalytic layer uniformly loaded with nano carbon black, polytetrafluoroethylene and iron oxide by depositing and sintering on a pretreated tubular graphite membrane substrate, and then loads carbon black-polytetrafluoroethylene as a multilayer heterogeneous tubular electro-Fenton electrode of a reduction layer. The tubular membrane electrode prepared by the method has the advantages of large specific surface area, more active sites for electrocatalytic reaction, good electrode stability, no need of pH adjustment and no need of an external iron source; chinese patent CN102674525A, published 2012, 9, 19, entitled "a cathode preparation method for cathode electro-Fenton Process", which is carried out at 20 deg.CAnd (3) treating the pretreated iron-based cathode material by a solution impregnation method to enable the surface of the iron-based cathode material to be loaded with other metals with the mass ratio of 0.2-0.7%, and then placing the iron-based cathode material in an oven for drying. The prepared bimetallic electrode has higher H2O2The generating activity can maintain higher ferrous ion concentration and has higher effect of degrading organic matters. Chinese patent CN106139933A, published 2016, 11, 23, entitled "a method for preparing a reactive electrochemical cathode membrane", uses polyacrylonitrile carbon fiber cloth as a substrate, a high molecular organic polymer as a membrane matrix, and graphene oxide as a blending filler, and prepares a membrane by a blending-immersion precipitation phase conversion method, and iron ions are loaded in the membrane by immersion after the membrane is formed. H is provided for a membrane-electro-Fenton integrated coupling system by utilizing the electrocatalysis characteristic of two-electron oxidation reduction cathode of polyacrylonitrile fiber cloth on a modified membrane2O2And the electrochemical reaction modification of the insulating inert organic high molecular polymer membrane is realized, and the traditional homogeneous electro-Fenton is heterogeneous electro-Fenton generated in the membrane. Solves the problem that the traditional electro-Fenton needs to add a large amount of acid and Fe2+The technical defect of (2). The three patent documents pay attention to how to introduce iron base when degrading organic matters, avoid the problems of adjusting pH in electrolyte and the like, control degradation speed through the iron base, and pay no attention to H2O2The problem arises.
The polyphenylene sulfide fiber is a high molecular compound fiber with aromatic rings, has high crystallinity, outstanding heat stability, radiation resistance, wear resistance, chemical corrosion resistance, high strength and other advantages, and can be applied to some special technical fields.
In the prior art, there are few reports on preparing an electro-Fenton cathode film by using PPS superfine fiber non-woven fabric as base fabric, and even no reports on preparing an electro-Fenton cathode film with an aeration function by using PPS superfine fiber non-woven fabric as base fabric.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an electro-fenton cathode membrane material with an aeration function, and a preparation method and an application thereof. Is provided withelectro-Fenton cathode membrane of aeration function, its characterized in that: the mass ratio of the polyphenylene sulfide superfine fiber non-woven fabric, the conductive filler and the binder in the electro-Fenton cathode film with the aeration function is 1: 0.1-7.5, and the gram weight of the electro-Fenton cathode film is 60-1200 g/m2And the air permeability is 1.3-13 mm/s.
The conductive filler is one or more of carbon black, acetylene black, carbon nano tubes, short carbon fibers or graphene oxide; the adhesive is one or more of polyethylene wax, polyvinylidene fluoride or epoxy resin
According to the invention, the polyphenylene sulfide superfine fiber membrane is used as the base material of the electro-Fenton cathode, and the high porosity of the polyphenylene sulfide superfine fiber non-woven fabric is utilized, so that an air channel can be effectively formed, air in the air is introduced into the electrolyte, an aeration effect is achieved, and H is facilitated2O2Is rapidly formed. In addition, polyphenylene sulfide has excellent corrosion resistance, and the prepared cathode material has good durability.
The invention also provides an electro-Fenton cathode membrane with an aeration function and a preparation method thereof, and the electro-Fenton cathode membrane is characterized in that: the method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the polyphenylene sulfide superfine fiber into a polyphenylene sulfide superfine fiber non-woven base fabric;
b. preparation of the Dispersion
Placing the conductive filler and the binder in a dispersing agent, and performing ultrasonic dispersion to obtain a conductive filler dispersion liquid;
c. preparation of electro-Fenton cathode film
B, spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, after the dispersing agent is volatilized, placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
the dispersant is one or more of water, acetone, ethanol or tetrahydrofuran; the conductive filler is one or more of carbon black, acetylene black, carbon nano tubes, short carbon fibers or graphene oxide; the adhesive is one or more of polyethylene wax, polyvinylidene fluoride or epoxy resin.
The specification of the polyphenylene sulfide superfine fiber base cloth prepared in the step a is 40-600g/m2(ii) a The diameter of the polyphenylene sulfide superfine fiber is 0.5-8 μm;
in the step b, an ultrasonic cell crusher is used for ultrasonic dispersion, and the dispersion time is 15-60 min; the mass ratio of the carbon black to the polyethylene wax is 1: 0.5-1.2.
In the step c, after the ethanol is volatilized, the mass ratio of the polyphenylene sulfide superfine fiber non-woven fabric to the carbon black to the polyethylene wax is controlled to be 1: 0.1-7.5.
In the step c, the heat setting temperature is 120-150 ℃, and the time is 30-60 min; the hot rolling temperature is 80-110 ℃, the pressure is 30-50 MPa, and the time is 5-30 s;
the invention also discloses application of the electro-Fenton cathode membrane material with the aeration function,
connecting the electro-Fenton cathode membrane material with a direct-current power supply cathode, and placing the cathode membrane material in an electro-Fenton reaction system, wherein one side of the electro-Fenton cathode membrane material is connected with air, one side of the electro-Fenton cathode membrane material is connected with a solution, and aeration is carried out on the other side of the electro-Fenton cathode membrane material through the side connected with the air.
The electro-Fenton cathode membrane material with the aeration function and the preparation method thereof have the following advantages: the preparation process flow is short, the environment is friendly, the processing is convenient, the high temperature and complex loading working procedure is avoided, the electro-Fenton cathode membrane is prepared only by an impregnation method, and the production cost is low.
The electro-Fenton cathode membrane prepared by the invention has good durability, can be repeatedly used for a long time, keeps good electrolytic efficiency, has good aeration performance through an air channel formed by polyphenylene sulfide superfine fiber non-woven fabric, can improve the generation of cathode hydrogen peroxide, and effectively improves the sewage treatment efficiency.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber into 400g/m of gram weight2The polyphenylene sulfide superfine fiber non-woven fabric base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 mu m;
b. preparation of the Dispersion
Placing carbon black and polyethylene wax in ethanol, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of the carbon black to the polyethylene wax is 1: 1;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to the polyethylene wax to be 1:0.5:0.5, then placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 5.2 mm/s.
Example 2
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber into 100g/m of gram weight2The polyphenylene sulfide superfine fiber non-woven fabric base cloth, wherein the polyphenylene sulfide superfine fiber base cloth is arranged in the polyphenylene sulfide superfine fiber base clothThe diameter of the fiber is 0.5-8 μm;
b. preparation of the Dispersion
Placing carbon black and polyethylene wax in ethanol, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of the carbon black to the polyethylene wax is 1: 1;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to the polyethylene wax to be 1:0.4:0.4, then placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 10.5 mm/s.
Example 3
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber into 400g/m of gram weight2The polyphenylene sulfide superfine fiber non-woven fabric base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 mu m;
b. preparation of the Dispersion
Placing carbon black and polyethylene wax in ethanol, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of the carbon black to the polyethylene wax is 2: 1;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to the polyethylene wax to be 1:0.4:0.2, then placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 6.3 mm/s.
Example 4
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber net into a gram weight of 400g/m2The polyphenylene sulfide superfine fiber non-woven fabric base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 um;
b. preparation of the Dispersion
Placing carbon black and polyethylene wax in ethanol, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of the carbon black to the polyethylene wax is 1: 1;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to the polyethylene wax to be 1:0.5:0.5, then placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 150 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 4.7 mm/s.
Example 5
An application of an electro-Fenton cathode film with an aeration function,
the electro-Fenton cathode membrane material obtained in examples 1-4 was connected to a negative electrode of a DC power supply and placed in an electro-Fenton reaction system, wherein one side of the electro-Fenton cathode membrane material was connected to air and one side was connected to the solution, and aeration was performed from one side connected to air to the other side. The removal rate of the organic matter in the electro-Fenton reaction system was 50mg/L methylene blue, and the pH was 3.
Example 6
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber into 400g/m of gram weight2The polyphenylene sulfide superfine fiber non-woven fabric base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 mu m;
b. preparation of the Dispersion
Placing graphene oxide and polyvinylidene fluoride in acetone, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of carbon black to polyethylene wax is 2: 1;
c. preparation of electro-Fenton cathode membrane
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after acetone is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the graphene oxide to the polyvinylidene fluoride to be 1:0.4:0.2, placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 5.6 mm/s.
Comparative example 1
An electro-Fenton cathode film with an aeration function and a preparation method thereof are characterized in that: the preparation method comprises the following steps:
a. preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the prepared polyphenylene sulfide superfine fiber net into a gram weight of 400g/m2The polyphenylene sulfide superfine fiber non-woven fabric base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 um;
b. preparation of the Dispersion
Placing carbon black in ethanol, and treating for 30min by an ultrasonic cell crusher to obtain a carbon black dispersion liquid;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, weighing the polyphenylene sulfide superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to be 1:1, then placing the sprayed polyphenylene sulfide superfine fiber base cloth in an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 6.4 mm/s.
Comparative example 2
A preparation method of an electro-Fenton cathode film with an aeration function is characterized by comprising the following steps: the preparation method comprises the following steps:
a. preparation of polyester fine fiber non-woven base fabric
Preparing the prepared polyester fine fibers into the polyester fine fibers with the gram weight of 40-600g/m2The polyphenylene sulfide superfine fiber base cloth is characterized in that the fiber diameter in the polyphenylene sulfide superfine fiber base cloth is 0.5-8 um;
b. preparation of the Dispersion
Placing carbon black and polyethylene wax in ethanol, and treating for 30min by using an ultrasonic cell crushing instrument to prepare a carbon black dispersion liquid, wherein the mass ratio of the carbon black to the polyethylene wax is 1: 1;
c. preparation of electro-Fenton cathode film
B, spraying the dispersion liquid onto the polyester superfine fiber base cloth obtained in the step a, weighing the polyester superfine fiber base cloth after the ethanol is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven cloth to the carbon black to the polyethylene wax to be 1:0.5:0.5, placing the sprayed polyester superfine fiber base cloth into an oven, carrying out heat setting treatment, and finally carrying out hot rolling treatment on the heat-set polyester superfine fiber base cloth by using a hot press to prepare the electro-Fenton cathode membrane;
wherein the heat setting temperature is 120 ℃ and the time is 30 min;
the hot rolling temperature is 110 ℃, the pressure is 30MPa, and the time is 10 s;
the air permeability of the obtained electro-Fenton cathode membrane material is 4.4 mm/s.
Comparative example 3
The application of the electro-Fenton cathode membrane with the aeration function is characterized in that the electro-Fenton cathode membrane material obtained in comparative examples 1-2 is connected with a direct-current power supply cathode and is placed in an electro-Fenton reaction system, wherein one side of the electro-Fenton cathode membrane material is connected with air, one side of the electro-Fenton cathode membrane material is connected with a solution, and one side of the electro-Fenton cathode membrane material is aerated to the other side of the electro-Fenton cathode membrane material through one side connected with the air. The removal rate of the organic matter in the electro-Fenton reaction system was 50mg/L methylene blue, and the pH was 3.
The results of application of example 5 and comparative example 3 were collated, and the decomposition effects of the electro-fenton cathode film materials obtained in examples 1 to 4 and comparative examples 1 to 2 were tested to test the decomposition conditions after 20 minutes of degradation, specifically characterized by the removal rate (%), and the test results are shown in the following table:
TABLE 1 Fenton cathode film removal of methylene blue
From the test results, the removal rate of the organic matters of the cathode film prepared by the embodiment is obviously improved compared with that of the comparative example.
Claims (6)
1. A preparation method of an electro-Fenton cathode film is characterized by comprising the following steps:
comprises the following steps
a. Preparation of polyphenylene sulfide superfine fiber base cloth
Preparing the polyphenylene sulfide superfine fiber into a polyphenylene sulfide superfine fiber non-woven base fabric;
b. preparation of the Dispersion
Placing the conductive filler and the adhesive in a dispersing agent, and performing ultrasonic dispersion to obtain a dispersion liquid;
c. preparation of electro-Fenton cathode film
Spraying the dispersion liquid to the polyphenylene sulfide superfine fiber base cloth obtained in the step a, after the dispersant is volatilized, carrying out heat setting treatment on the sprayed polyphenylene sulfide superfine fiber base cloth, and carrying out hot rolling treatment on the heat-set polyphenylene sulfide superfine fiber base cloth to prepare the electro-Fenton cathode membrane;
in the step b, the mass ratio of the conductive filler to the adhesive is 1: 0.5-1.2;
in the step c, the heat setting temperature is 120-150 ℃, and the time is 30-60 min; the hot rolling temperature is 80-110 ℃, the pressure is 30-50 MPa, and the time is 5-30 s;
in the step c, after the dispersant is volatilized, controlling the mass ratio of the polyphenylene sulfide superfine fiber non-woven fabric to the conductive filler to the adhesive to be 1: 0.1-7.5;
the conductive filler is one or more of carbon black, acetylene black, carbon nanotubes, short carbon fibers or graphene oxide; the adhesive is one or more of polyethylene wax, polyvinylidene fluoride or epoxy resin;
the electro-FentonThe gram weight of the cathode film is 60-1200 g/m2The air permeability is 1.3-13 mm/s;
the electro-Fenton cathode membrane can effectively form an air channel by utilizing the high porosity of the polyphenylene sulfide superfine fiber non-woven fabric, so that air is introduced into electrolyte to achieve an aeration effect.
2. A method of preparing an electro-fenton cathode membrane according to claim 1, characterized in that:
the specification of the polyphenylene sulfide superfine fiber base cloth prepared in the step a is 40-600g/m2(ii) a The diameter of the polyphenylene sulfide superfine fiber is 0.5-8 μm.
3. A method of preparing an electro-fenton cathode membrane according to claim 1, characterized in that:
and in the step b, performing ultrasonic dispersion by using an ultrasonic cell crusher for 15-60 min.
4. A method of preparing an electro-fenton cathode membrane according to any one of claims 1 to 3, characterized in that:
the dispersant is one or more of water, acetone, ethanol or tetrahydrofuran.
5. An electro-Fenton cathode membrane prepared using the method of preparing an electro-Fenton cathode membrane according to any one of claims 1 to 4;
the mass ratio of the polyphenylene sulfide superfine fiber non-woven fabric, the conductive filler and the adhesive in the electro-Fenton cathode film is 1: 0.1-7.5, and the gram weight of the electro-Fenton cathode film is 60-1200 g/m2And the air permeability is 1.3-13 mm/s.
6. Use of an electro-Fenton cathode membrane according to claim 5, wherein:
connecting the electro-Fenton cathode membrane material with a direct-current power supply cathode, and placing the cathode membrane material in an electro-Fenton reaction system, wherein one side of the electro-Fenton cathode membrane material is connected with air, one side of the electro-Fenton cathode membrane material is connected with a solution, and aeration is carried out on the other side of the electro-Fenton cathode membrane material through the side connected with the air.
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| CN2018106848582 | 2018-06-28 | ||
| CN201810684858.2A CN108821395A (en) | 2018-06-28 | 2018-06-28 | A kind of electric Fenton cathode film material and its preparation method and application with aeration performance |
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| CN201910553302.4A Active CN110255672B (en) | 2018-06-28 | 2019-06-24 | electro-Fenton cathode membrane material with aeration function and preparation method and application thereof |
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| US4370214A (en) * | 1980-04-25 | 1983-01-25 | Olin Corporation | Reticulate electrode for electrolytic cells |
| CN102341943A (en) * | 2009-03-06 | 2012-02-01 | 巴斯夫欧洲公司 | Improved membrane electrode units |
| CN103641212A (en) * | 2013-12-13 | 2014-03-19 | 南开大学 | Method for preparing graphite felt cathode material for treating organic wastewater |
| CN106139933A (en) * | 2016-06-24 | 2016-11-23 | 辽宁科技学院 | A kind of preparation method of reactive electrochemical cathode film |
-
2018
- 2018-06-28 CN CN201810684858.2A patent/CN108821395A/en not_active Withdrawn
-
2019
- 2019-06-24 CN CN201910553302.4A patent/CN110255672B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370214A (en) * | 1980-04-25 | 1983-01-25 | Olin Corporation | Reticulate electrode for electrolytic cells |
| CN102341943A (en) * | 2009-03-06 | 2012-02-01 | 巴斯夫欧洲公司 | Improved membrane electrode units |
| CN103641212A (en) * | 2013-12-13 | 2014-03-19 | 南开大学 | Method for preparing graphite felt cathode material for treating organic wastewater |
| CN106139933A (en) * | 2016-06-24 | 2016-11-23 | 辽宁科技学院 | A kind of preparation method of reactive electrochemical cathode film |
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| CN110255672A (en) | 2019-09-20 |
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