CN112439456A - Preparation of floatable porous BaTiO3Method for preparing/Ag/PVDF composite piezoelectric photocatalytic material - Google Patents
Preparation of floatable porous BaTiO3Method for preparing/Ag/PVDF composite piezoelectric photocatalytic material Download PDFInfo
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- 239000002033 PVDF binder Substances 0.000 title claims abstract description 92
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 92
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 68
- 239000000843 powder Substances 0.000 claims abstract description 53
- 238000003756 stirring Methods 0.000 claims abstract description 53
- 239000000243 solution Substances 0.000 claims abstract description 52
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000005406 washing Methods 0.000 claims abstract description 36
- 239000011780 sodium chloride Substances 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000008367 deionised water Substances 0.000 claims abstract description 26
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 26
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011259 mixed solution Substances 0.000 claims abstract description 18
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 14
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 11
- 230000001678 irradiating effect Effects 0.000 claims abstract description 9
- 239000011858 nanopowder Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims description 56
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001291 vacuum drying Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 description 9
- 238000013329 compounding Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000011246 composite particle Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002082 metal nanoparticle Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005621 ferroelectricity Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005616 pyroelectricity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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Abstract
Preparation of floatable porous BaTiO3The method for preparing the/Ag/PVDF composite piezoelectric material comprises the following steps: 1) mixing AgNO3Putting the powder into a beaker, adding deionized water, and stirring until the powder is completely dissolved; then BaTiO is added3Nano-powder to obtain a mixed solution; 2) irradiating the mixed solution obtained in the step 1) by a high-pressure mercury lamp, and then centrifugally washing to obtain BaTiO3Ag powder; 3) placing polyvinylidene fluoride powder in a beaker,then adding a Dimethylformamide (DMF) solution until the DMF solution is completely dissolved to obtain a PVDF solution; 4) BaTiO obtained in the step 2)3Putting the/Ag powder in a beaker, adding the PVDF solution obtained in the step 3), uniformly stirring, adding NaCl particles, and stirring until the NaCl particles are completely dissolved to obtain a uniform mixed system; 5) putting the uniformly mixed system obtained in the step 4) into a mould, and drying in vacuum to obtain a composite block; 6) placing the composite block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material has the characteristics of high porosity, short recovery time and high overall catalytic efficiency.
Description
Technical Field
The invention belongs to the technical field of preparation of piezoelectric photocatalytic materials, and particularly relates to a method for preparing floatable porous BaTiO3A method for preparing a/Ag/PVDF composite piezoelectric photocatalytic material.
Background
Barium titanate (BaTiO)3) The perovskite type metal oxide is a typical perovskite type metal oxide, has high dielectric constant and low dielectric loss, and excellent properties of ferroelectricity, piezoelectricity, pyroelectricity and the like, and is widely applied to the manufacture of ceramic sensitive components such as multilayer ceramic capacitors, electrooptical devices, thermistors, pressure sensors, nonvolatile ferroelectric random access memories and the like. Novel porous BaTiO3The piezoelectric ceramic has high porosity compared with the traditional compact BaTiO3The piezoelectric ceramic has good heat insulation and sound insulation, low acoustic impedance and high hydrostatic pressure figure of merit, so that the porous barium titanate piezoelectric ceramic has wider application prospect.
Tetragonal phase of BaTiO3The ceramic has stable chemical properties and good light corrosion resistance, and the internal spontaneous polarization field can effectively promote the separation of photo-generated charges, so that the ceramic has good piezoelectric catalysis and photocatalysis characteristics, but the performance of the ceramic is limited by self dielectric loss, large temperature coefficient and high Curie temperature, so that the BaTiO ceramic is considered to be3Modified to improve performance. Compared with Au, Pt and Pd noble metal nanoparticles, Ag is widely used for modification research of catalytic materials due to low price and easy acquisition.
BaTiO3And some noble metal nano particles can be compounded withThe catalyst activity of the composite particles is effectively improved, but the recovery effect of the composite particles is still limited by the powder in practical application.
Disclosure of Invention
To overcome the above-mentioned disadvantages of the prior art, it is an object of the present invention to provide a method for preparing floatable porous BaTiO3The method of the/Ag/PVDF composite piezoelectric photocatalytic material solves the problem of traditional compact BaTiO in the practical application process3The base piezoelectric ceramic photocatalytic powder has the advantages of improving porosity, saving recovery time and improving overall catalytic efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: preparation of floatable porous BaTiO3The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material comprises the following steps:
step 2, irradiating the mixed solution obtained in the step 1 by a high-pressure mercury lamp of 300W, and then carrying out centrifugal washing to obtain BaTiO3Ag powder;
step 3, weighing 1g of polyvinylidene fluoride (PVDF) powder in a beaker, weighing 10-15mL of Dimethylformamide (DMF) solution, adding, heating in a water bath, and stirring until the PVDF solution is completely dissolved to obtain a PVDF solution;
step 4, weighing 2-4g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, uniformly stirring, weighing 1g of NaCl particles, and continuously stirring until the PVDF solution is completely dissolved to obtain a uniform mixed system;
step 5, putting the uniform mixing system obtained in the step 4 into a mould, and drying in vacuum to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
In the step 1, a magnetic stirrer is used for stirring for 10-20 min.
In the step 2, the irradiation time of the high-pressure mercury lamp is 1-3 min; when centrifugally washing, washing for 3 times by using deionized water and then washing for 3 times by using absolute ethyl alcohol.
In the step 3, the temperature of water bath heating is 60-70 ℃.
In the step 4, a magnetic stirrer is used for stirring for 40-60 min.
In the step 5, the temperature of vacuum drying is 40-60 ℃, and the time of vacuum drying is 24-48 h.
The invention has the beneficial effects that:
the invention successfully mixes the powder particles with photocatalytic property with NaCl and polyvinylidene fluoride (PVDF) to prepare the floatable porous BaTiO3/Ag/PVDF composite piezoelectric photocatalytic material and prepared floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material can improve the porosity of the photocatalytic powder on the basis of ensuring that the photocatalytic powder is easy to recycle, expose the surface area as large as possible, widen the working condition and save the recycling time, thereby improving the overall catalytic efficiency.
The invention selects a high molecular material to connect the photocatalytic particles to prepare the porous material, and the exposed pore channels can retain the photocatalytic property of the particles and can connect the particles into a whole, thereby having important significance.
Drawings
FIG. 1 is a process for preparing floatable porous BaTiO according to the present invention3A process flow chart of a method for compounding the/Ag/PVDF piezoelectric photocatalytic material.
FIG. 2 shows floatable porous BaTiO obtained in examples 1 to 53X-ray diffraction pattern of the method for pressing electro-optic catalytic material by using/Ag/PVDF.
FIG. 3 shows floatable porous BaTiO obtained in examples 1 to 53Scanning electron microscope image of the method for compounding the/Ag/PVDF piezoelectric photocatalytic material.
FIG. 4 shows floatable porous BaTiO obtained in examples 1 to 53Method for compounding Ag/PVDF piezoelectric photocatalytic material, and composite material floating in waterA macroscopic image of (a).
FIG. 5(a) is a view of floatable porous BaTiO obtained in examples 1-53A catalytic degradation diagram of a method for compounding the/Ag/PVDF piezoelectric photocatalytic material.
FIG. 5(b) is a view of floatable porous BaTiO obtained in examples 1 to 53A piezoelectric catalytic degradation diagram of a method for compounding/Ag/PVDF with a piezoelectric photocatalytic material.
FIG. 5(c) is a view of floatable porous BaTiO obtained in examples 1 to 53A piezoelectric photocatalytic degradation diagram of a method for compounding/Ag/PVDF piezoelectric photocatalytic materials.
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 method for preparing floatable porous BaTiO3The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is implemented according to the following steps as shown in figure 1:
step 2, irradiating the mixed solution obtained in the step 1 for 1-3min in a 300W high-pressure mercury lamp, performing centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 10-15ml of PVDF solution, adding the solution, heating and stirring the solution in water bath at the temperature of 60-70 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 2-4g of BaTiO obtained in step 23Putting the Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 30-60min by using a magnetic stirrer, after stirring uniformly, weighing 1g of NaCl particles, adding the NaCl particles, and continuously stirring for 40-60min by using the magnetic stirrer until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, putting the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying at the temperature of 40-60 ℃ for 24-48h to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
Example 1
step 2, irradiating the mixed solution obtained in the step 1 for 1min in a high-pressure mercury lamp (300W), performing centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 10ml of PVDF solution, adding the solution, heating and stirring the solution in water bath at the temperature of 60 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 2g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 40min by using a magnetic stirrer, uniformly stirring, weighing 1g of NaCl particles, adding the NaCl particles, and continuously stirring for 40min by using the magnetic stirrer until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, placing the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
Example 2
step 2, putting the mixed solution obtained in the step 1 in a high-pressure mercury lamp(300W) irradiating for 2min, then carrying out centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 12.5ml of PVDF solution, adding, heating and stirring in a water bath at 65 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 3g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 50min by using a magnetic stirrer, uniformly stirring, weighing 1g of NaCl particles, adding the NaCl particles, and continuously stirring for 50min by using the magnetic stirrer until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, placing the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying for 36 hours at the temperature of 50 ℃ to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
Example 3
step 2, irradiating the mixed solution obtained in the step 1 for 3min in a high-pressure mercury lamp (300W), performing centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 15ml of PVDF solution, adding, heating and stirring in water bath at 70 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 4g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 60min by using a magnetic stirrer, uniformly stirring, weighing 1g of NaCl particles, adding the NaCl particles, continuously stirring for 60min by using the magnetic stirrer until the NaCl particles are completely dissolved, and uniformly mixingA system;
step 5, placing the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying for 48 hours at the temperature of 60 ℃ to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
Example 4
step 2, irradiating the mixed solution obtained in the step 1 for 3min in a high-pressure mercury lamp (300W), performing centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 15ml of PVDF solution, adding, heating and stirring in water bath at 70 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 4g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 60min by using a magnetic stirrer, after stirring uniformly, weighing 1g of NaCl particles, adding the NaCl particles, and continuously stirring for 60min by using the magnetic stirrer until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, placing the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying for 48 hours at the temperature of 60 ℃ to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
Example 5
step 2, irradiating the mixed solution obtained in the step 1 for 1min in a high-pressure mercury lamp (300W), performing centrifugal washing, washing for 3 times by using deionized water, and then washing for 3 times by using absolute ethyl alcohol to obtain BaTiO3Ag powder;
step 3, weighing 1g of PVDF powder in a beaker, weighing 10ml of PVDF solution, adding the solution, heating and stirring the solution in water bath at the temperature of 60 ℃ until the PVDF solution is completely dissolved to obtain the PVDF solution;
step 4, weighing 2g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, stirring for 40min by using a magnetic stirrer, uniformly stirring, weighing 1g of NaCl particles, adding the NaCl particles, and continuously stirring for 40min by using the magnetic stirrer until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, placing the uniform mixed system obtained in the step 4 into a mould, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
As shown in FIG. 2, which is a graph showing the results of X-ray diffraction analysis (XRD) of the substances obtained in examples 1 to 5, it can be seen that the diffraction peak of the obtained composite material corresponds to the standard card of barium titanate, and the peak of PVDF is not clearly shown due to its low content, so it can be seen that floatable porous BaTiO can be obtained by the method of the present invention3Conclusion of the/Ag/PVDF composite piezoelectric photocatalytic material.
The morphology of the substances obtained in examples 1 to 5 was analyzed by a Scanning Electron Microscope (SEM), as shown in FIG. 3, it can be seen from the graph a that the composite material had a relatively flat surface and non-uniform pores on the surface, which are related to the precipitation of NaCl; as can be seen from the sectional view, the composite material has many pits on the section, and under high magnification, it can be observed that the PVDF reacts BaTiO with3The particles are wrapped, and the PVDF plays a role in bridging and supporting the BaTiO3Connected as a whole and the appearance of such a multi-channel can be clearly seen. Therefore, the method of the invention can successfully prepare porous BaTiO which can float in water3the/Ag/PVDF composite piezoelectric photocatalytic material.
As shown in FIG. 4, which is a macroscopic image of the floating of the substances obtained in examples 1-5 in water, it can be seen that the composite block obtained under macroscopic conditions can successfully float in water, which shows that the composite material can effectively save the recovery time in practical application.
As shown in fig. 5(a) - (c) which are graphs of results of catalytic degradation analysis of the substances obtained in examples 1-5, it can be seen from the graphs that the obtained composite block is degraded by 40.9% in 180min under 300W illumination, is degraded by 57.7% in 180min under ultrasound, has a good synergistic effect of photocatalysis and piezoelectric catalysis under simultaneous illumination and ultrasound, and is degraded by 65.3% in 180min, which indicates that the composite block has a good degradation effect on organic dyes, and can obviously feel the convenience of recovery in testing, and effectively reduce time and labor cost.
The invention successfully prepares porous BaTiO which can float in water3the/Ag/PVDF composite piezoelectric photocatalytic material. Prepared floatable porous BaTiO3The Ag/PVDF composite piezoelectric photocatalytic material can improve the porosity of photocatalytic powder on the basis of ensuring that the photocatalytic powder is easy to recycle, expose the surface area as large as possible, widen the working condition and save the recycling time, thereby improving the overall catalytic efficiency, so the process has important strategic significance and urgent practical value.
Claims (6)
1. Preparation of floatable porous BaTiO3The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized by comprising the following steps of:
step 1, weighing 0.08-0.24g AgNO3Putting the powder into a beaker, adding 50-100mL of deionized water, stirring until the powder is completely dissolved, and weighing 1g of BaTiO3Adding the nano powder, and uniformly stirring to obtain a mixed solution;
step 2, irradiating the mixed solution obtained in the step 1 by a high-pressure mercury lamp of 300W, and then dissociatingHeart washing to obtain BaTiO3Ag powder;
step 3, weighing 1g of polyvinylidene fluoride (PVDF) powder in a beaker, weighing 10-15mL of Dimethylformamide (DMF) solution, adding, heating in a water bath, and stirring until the PVDF solution is completely dissolved to obtain a PVDF solution;
step 4, weighing 2-4g of BaTiO obtained in step 23Putting the/Ag powder into a beaker, weighing 10mL of the PVDF solution obtained in the step 3, adding the PVDF solution, uniformly stirring, weighing 1g of NaCl particles, and continuously stirring until the NaCl particles are completely dissolved to obtain a uniform mixed system;
step 5, putting the uniform mixing system obtained in the step 4 into a mould, and drying in vacuum to obtain a composite block;
step 6, placing the dried block body in deionized water, and washing NaCl to obtain the floatable porous BaTiO3the/Ag/PVDF composite piezoelectric photocatalytic material.
2. A method of making floatable porous BaTiO according to claim 13The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized in that in the step 1, a magnetic stirrer is used for stirring for 10-20 min.
3. A method of making floatable porous BaTiO according to claim 13The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized in that in the step 2, the irradiation time of a high-pressure mercury lamp is 1-3 min; when centrifugally washing, washing for 3 times by using deionized water and then washing for 3 times by using absolute ethyl alcohol.
4. A method of making floatable porous BaTiO according to claim 13The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized in that in the step 3, the temperature of water bath heating is 60-70 ℃.
5. A method of making floatable porous BaTiO according to claim 13The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized in that in the step 4, the stirring process is adopted to ensure thatStirring with a magnetic stirrer for 40-60 min.
6. A method of making floatable porous BaTiO according to claim 13The method for preparing the/Ag/PVDF composite piezoelectric photocatalytic material is characterized in that in the step 5, the vacuum drying temperature is 40-60 ℃, and the vacuum drying time is 24-48 hours.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804299A (en) * | 2022-06-10 | 2022-07-29 | 青岛科技大学 | Preparation of flexible piezoelectric liner tube and application of flexible piezoelectric liner tube in self-driven degradation of organic pollutants |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002191984A (en) * | 2000-12-27 | 2002-07-10 | Nippon Zeon Co Ltd | Photocatalyst composition and thermoplastic resin composition containing the same |
| CN101869990A (en) * | 2009-04-24 | 2010-10-27 | 北京化工大学 | Preparation method of Ag/BaTiO3/PVDF ternary complex with high energy storage density |
| CN110302429A (en) * | 2019-07-15 | 2019-10-08 | 江西理工大学 | A kind of Ag-DBT/PVDF Composite Bone bracket and preparation method thereof |
| CN110314250A (en) * | 2019-07-15 | 2019-10-11 | 江西理工大学 | A kind of preparation method of PVDF/DBT Composite Bone bracket |
-
2020
- 2020-11-19 CN CN202011301373.4A patent/CN112439456A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002191984A (en) * | 2000-12-27 | 2002-07-10 | Nippon Zeon Co Ltd | Photocatalyst composition and thermoplastic resin composition containing the same |
| CN101869990A (en) * | 2009-04-24 | 2010-10-27 | 北京化工大学 | Preparation method of Ag/BaTiO3/PVDF ternary complex with high energy storage density |
| CN110302429A (en) * | 2019-07-15 | 2019-10-08 | 江西理工大学 | A kind of Ag-DBT/PVDF Composite Bone bracket and preparation method thereof |
| CN110314250A (en) * | 2019-07-15 | 2019-10-11 | 江西理工大学 | A kind of preparation method of PVDF/DBT Composite Bone bracket |
Non-Patent Citations (2)
| Title |
|---|
| 徐姝雅等: "压电增强的等离激元光催化材料Ag/BaTiO3 的制备及性能研究" * |
| 赵勇: "多孔钛酸钡的制备及其应用研究" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804299A (en) * | 2022-06-10 | 2022-07-29 | 青岛科技大学 | Preparation of flexible piezoelectric liner tube and application of flexible piezoelectric liner tube in self-driven degradation of organic pollutants |
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