CN114042444A - Preparation method of titanium dioxide-based nano photocatalytic film - Google Patents
Preparation method of titanium dioxide-based nano photocatalytic film Download PDFInfo
- Publication number
- CN114042444A CN114042444A CN202111392588.6A CN202111392588A CN114042444A CN 114042444 A CN114042444 A CN 114042444A CN 202111392588 A CN202111392588 A CN 202111392588A CN 114042444 A CN114042444 A CN 114042444A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- substrate
- steps
- based nano
- suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 63
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 54
- 239000000725 suspension Substances 0.000 claims abstract description 26
- 238000001354 calcination Methods 0.000 claims abstract description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims description 3
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 229940116411 terpineol Drugs 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000000920 calcium hydroxide Substances 0.000 abstract description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007641 inkjet printing Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000378 calcium silicate Substances 0.000 description 4
- 229910052918 calcium silicate Inorganic materials 0.000 description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- -1 anionic oxygen ions Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000011943 nanocatalyst Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0217—Pretreatment of the substrate before coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0236—Drying, e.g. preparing a suspension, adding a soluble salt and drying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a preparation method of a titanium dioxide-based nano photocatalytic film, which comprises the following steps: s1, cleaning the substrate; s2, pretreating the substrate through a calcium hydroxide solution; s3, preparing titanium dioxide suspension; s4, spraying the titanium dioxide suspension on the surface of the substrate through an ink-jet printer; and S5, drying and calcining to obtain the titanium dioxide film. The titanium dioxide suspension coating is realized in an ink-jet printing mode, so that the coating uniformity is improved, and the shape and thickness of the film can be adjusted; through calcium hydroxide pretreatment, silicate with a fluffy structure is generated on the surface of the substrate, so that the stress of titanium dioxide film shrinkage is reduced, and the generation of cracks is reduced.
Description
Technical Field
The invention relates to the technical field of photocatalysts, in particular to a preparation method of a titanium dioxide-based nano photocatalyst film.
Background
With the improvement of living standard and the enhancement of environmental awareness, people have higher and higher requirements on air quality. VOCs are one of the main pollutants of air, and seriously threaten the physical health of people. As a high-efficiency, nontoxic and stable photocatalytic material, the nano titanium dioxide has good photocatalytic activity in liquid phase and gas phase reactions, and is gradually valued by people.
Under the irradiation of light, the titanium dioxide surface is excited to generate electrons and holes. The electrons and the holes have extremely strong reducing power, rapidly migrate to the surface of the organic compound and activate the adsorbed oxygen and moisture to generate hydroxyl radicals and super anionic oxygen ions with extremely strong oxidizing power, rapidly oxidize and decompose various organic compounds and partial inorganic substances into water and carbon dioxide, and have extremely strong functions of sterilization, deodorization, mildew prevention, pollution prevention, self cleaning and air purification. Meanwhile, the nano titanium dioxide has the characteristics that oxygen molecules and water molecules in the air are utilized to convert contacted organic matters into carbon dioxide and water, the carbon dioxide and the water do not change, the theoretical effective period is very long, the maintenance cost is low, and the nano titanium dioxide is widely applied to various fields of food, medicines, cosmetics and the like.
The existing method for preparing the nano catalyst film mainly comprises a sol-gel method, an evaporation method and the like, and has the defects of complex process and high cost; and because the expansion rates of the substrate and the titanium dioxide film are different, cracks are easily generated on the surface of the titanium dioxide film, and the firmness of the titanium dioxide film is influenced.
Disclosure of Invention
The invention aims to provide a preparation method of a titanium dioxide-based nano photocatalyst film, which aims to solve the technical problems mentioned in the background technology and is realized by the following technical scheme:
a preparation method of a titanium dioxide-based nano photocatalytic film comprises the following steps:
s1, cleaning the substrate;
s2, pretreating the substrate through a calcium hydroxide solution;
s3, preparing titanium dioxide suspension;
s4, spraying the titanium dioxide suspension on the surface of the substrate through an ink-jet printer;
and S5, drying and calcining to obtain the titanium dioxide film.
Further, the cleaning the substrate in step S1 includes the following steps:
s11, placing the substrate into deionized water containing a cleaning agent, and continuously carrying out ultrasonic cleaning for 20 min;
s12, placing the substrate processed in the step S11 into a hydrofluoric acid solution with the mass fraction of 5%, and continuously carrying out ultrasonic cleaning for 15 min;
and S13, sequentially placing the substrate processed in the S12 into absolute ethyl alcohol and deionized water, and continuously carrying out ultrasonic cleaning for 20 min.
Further, the preprocessing in step S2 includes the following steps:
s21, placing the substrate in a saturated calcium hydroxide solution at 90 ℃ for treatment for 8-24 h;
s22, placing the substrate processed by the S21 into deionized water, continuously carrying out ultrasonic cleaning for 5min, and then washing with the deionized water for 5min
Further, the step S3 of preparing the titanium dioxide suspension includes the following steps:
s31, mixing the nano titanium dioxide powder, the dispersing agent and terpineol according to the molar ratio of 1:2:6 to prepare titanium dioxide suspension;
s32, ultrasonically shaking the titanium dioxide suspension prepared in the S31 for 30 min.
Further, the drying and calcining in step S5 includes the following steps:
s51, drying the substrate sprayed with the titanium dioxide suspension at the temperature of 80-130 ℃ for 5-10 min;
s52, calcining the substrate treated by the S51 at the temperature of 600-800 ℃ for 1.5-2 h.
Further, the substrate is quartz glass.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
1. the titanium dioxide suspension coating is realized in an ink-jet printing mode, so that the coating uniformity is improved, and the shape and thickness of the film can be adjusted;
2. through calcium hydroxide pretreatment, silicate with a fluffy structure is generated on the surface of the substrate, so that the stress of titanium dioxide film shrinkage is reduced, and the generation of cracks is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is a flowchart of an embodiment of the present application.
Detailed Description
For better understanding of the above technical solutions, the following detailed descriptions will be made in conjunction with the drawings and the detailed description of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a titanium dioxide-based nano photocatalytic film comprises the following steps:
s1, cleaning the substrate; the cleanliness of the substrate directly influences the film forming quality of the titanium dioxide-based nano photocatalytic film, the surface of the substrate is not clean in place, the titanium dioxide film is easily distributed unevenly, the adhesive force is poor, and preferably, the substrate is quartz glass, namely pure silica glass.
The specific cleaning steps are as follows: s11, putting the substrate into deionized water containing a cleaning agent, and continuously ultrasonically cleaning for 20min, wherein the cleaning agent is a glass cleaning agent; s12, placing the substrate cleaned by the cleaning agent into a hydrofluoric acid solution with the mass fraction of 5% for continuous ultrasonic cleaning for 15min, wherein hydrofluoric acid has strong corrosivity to glass substances, can effectively react with glass surface substances, and improves the cleaning effect; s13, placing the substrate subjected to hydrofluoric acid pickling treatment into absolute ethyl alcohol and deionized water in sequence, and continuously carrying out ultrasonic cleaning for 20 min.
S2, pretreating the substrate through a calcium hydroxide solution; the method comprises the following steps of (1) reacting calcium hydroxide solution with silicon dioxide on the surface of a substrate to generate insoluble calcium silicate and water, and further forming a fluffy calcium silicate layer on the surface of the substrate, wherein the method comprises the following specific steps: s21, placing the substrate in a saturated calcium hydroxide solution at 90 ℃ for treatment for 8h to form a fluffy calcium silicate layer on the surface of the substrate; and S22, placing the substrate processed by the S21 into deionized water, continuously carrying out ultrasonic cleaning for 5min, then washing for 5min by using the deionized water, and washing away residual calcium hydroxide.
S3, preparing a titanium dioxide suspension, which comprises the following steps: s31, mixing the nano titanium dioxide powder and the dispersing agent according to the molar ratio of 1:2 to prepare titanium dioxide dispersion liquid, uniformly dispersing the titanium dioxide, and mixing the dispersion liquid and terpineol according to the molar ratio of 1:2 to prepare titanium dioxide suspension; and S32, ultrasonically vibrating the titanium dioxide suspension prepared in the S31 for 30min, so that the uniformity of the titanium dioxide is improved, and the agglomeration of the titanium dioxide powder is avoided.
S4, spraying the titanium dioxide suspension on the surface of the substrate through an ink-jet printer;
specifically, the ink jet printer includes ink horn, linear module, shower nozzle and heating gun, and heating gun and shower nozzle are fixed on linear module in step, and the heating gun is used for preheating the base plate. When the device is used, the titanium dioxide suspension is poured into the ink box, the heating gun and the spray head move synchronously, the heating gun preheats the substrate in advance, and then the spray head sprays the titanium dioxide suspension on the surface of the substrate. The substrate is preheated by the heating gun, so that floating dust on the surface of the substrate can be blown out, volatilization of a solvent in the titanium dioxide suspension can be increased, and the drying speed is increased. The spraying amount of the ink-jet printer and the moving speed of the spray head can be adjusted, so that the thickness of the titanium dioxide film can be adjusted.
S5, drying and calcining to obtain the titanium dioxide film, which comprises the following steps:
s51, drying the substrate sprayed with the titanium dioxide suspension for 10min at the temperature of 80 ℃ to obtain a uniform titanium dioxide film; and S52, calcining the dried titanium dioxide film at the temperature of 600 ℃ for 2h to obtain the stable and porous titanium dioxide film.
Example 2
The technical scheme of the embodiment 2 is basically the same as that of the embodiment 1, and the difference is that the drying temperature of the titanium dioxide suspension in the step S51 is 130 ℃, and the drying time is 5 min; in the step S52, the calcining temperature of the titanium dioxide film is 800 ℃, and the calcining time is 1.5 h.
In the calcining process, the thermal expansion coefficient of the glass substrate is different from that of the titanium dioxide film, the linear expansion coefficient of the titanium dioxide film is 25/DEG C, the variation range of the linear expansion coefficient of the glass substrate is (5.8-150) multiplied by 107/DEG C, and a large difference exists between the two. By forming the calcium silicate layer with a fluffy structure on the surface of the glass substrate, the titanium dioxide film on the surface of the glass substrate is buffered in shrinkage, the stress concentration of the film is avoided, and the cracking is reduced or avoided.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. the titanium dioxide suspension coating is realized in an ink-jet printing mode, so that the coating uniformity is improved, and the shape and thickness of the film can be adjusted;
2. through calcium hydroxide pretreatment, silicate with a fluffy structure is generated on the surface of the substrate, so that the stress of titanium dioxide film shrinkage is reduced, and the generation of cracks is reduced.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the steps, numerical expressions and numerical values set forth in these examples do not limit the scope of the invention. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A preparation method of a titanium dioxide-based nano photocatalytic film is characterized by comprising the following steps:
s1, cleaning the substrate;
s2, pretreating the substrate through a calcium hydroxide solution;
s3, preparing titanium dioxide suspension;
s4, spraying the titanium dioxide suspension on the surface of the substrate through an ink-jet printer;
and S5, drying and calcining to obtain the titanium dioxide film.
2. The method for preparing a titanium dioxide based nano photocatalytic film as claimed in claim 1, wherein the step of cleaning the substrate in step S1 comprises the steps of:
s11, placing the substrate into deionized water containing a cleaning agent, and continuously carrying out ultrasonic cleaning for 20 min;
s12, placing the substrate processed in the step S11 into a hydrofluoric acid solution with the mass fraction of 5%, and continuously carrying out ultrasonic cleaning for 15 min;
and S13, sequentially placing the substrate processed in the S12 into absolute ethyl alcohol and deionized water, and continuously carrying out ultrasonic cleaning for 20 min.
3. The method for preparing titanium dioxide based nano photocatalytic film according to claim 1, wherein the pretreatment in step S2 comprises the following steps:
s21, placing the substrate in a saturated calcium hydroxide solution at 90 ℃ for treatment for 8-24 h;
and S22, placing the substrate processed by the S21 into deionized water, continuously carrying out ultrasonic cleaning for 5min, and then washing for 5min by using the deionized water.
4. The method for preparing titanium dioxide based nano photocatalytic film according to claim 1, wherein the step of preparing titanium dioxide suspension in step S3 comprises the following steps:
s31, mixing the nano titanium dioxide powder, the dispersing agent and terpineol according to the molar ratio of 1:2:6 to prepare titanium dioxide suspension;
s32, ultrasonically shaking the titanium dioxide suspension prepared in the S31 for 30 min.
5. The method for preparing titanium dioxide based nano photocatalytic film according to claim 1, wherein the drying and calcining in step S5 comprises the following steps:
s51, drying the substrate sprayed with the titanium dioxide suspension at the temperature of 80-130 ℃ for 5-10 min;
s52, calcining the substrate treated by the S51 at the temperature of 600-800 ℃ for 1.5-2 h.
6. The method of claim 1, wherein the substrate is quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392588.6A CN114042444A (en) | 2021-11-23 | 2021-11-23 | Preparation method of titanium dioxide-based nano photocatalytic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392588.6A CN114042444A (en) | 2021-11-23 | 2021-11-23 | Preparation method of titanium dioxide-based nano photocatalytic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114042444A true CN114042444A (en) | 2022-02-15 |
Family
ID=80210433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111392588.6A Withdrawn CN114042444A (en) | 2021-11-23 | 2021-11-23 | Preparation method of titanium dioxide-based nano photocatalytic film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114042444A (en) |
-
2021
- 2021-11-23 CN CN202111392588.6A patent/CN114042444A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5593737A (en) | Photocatalytic semiconductor coating process | |
| JP3732247B2 (en) | Titanium oxide coating film-forming liquid composition for photocatalyst and process for producing the same | |
| CN101549959B (en) | A method of nano self-cleaning glass production in the float glass production line | |
| US20070248831A1 (en) | Titanium Oxide Base Photocatalyst, Process for Producing the Same and Use Thereof | |
| Wu et al. | A new method to control nano-porous structure of sol-gel-derived silica films and their properties | |
| JP2009106905A (en) | Method for producing titanium oxide photocatalyst thin film | |
| CN104858118A (en) | Photocatalyst furniture and coating construction process thereof | |
| CN106732816A (en) | A kind of Pd/TiO2/ cotton fiber composite formaldehyde room-temperature oxidation catalyst and preparation method thereof | |
| CN102653639A (en) | Composite titanium dioxide photocatalyst sol coating material component and coating method thereof | |
| CN107143906A (en) | Electric heating device capable of purifying air and the preparation method of safety glass supported catalyst | |
| CN114042444A (en) | Preparation method of titanium dioxide-based nano photocatalytic film | |
| JP2009106906A (en) | Method for producing titanium oxide photocatalyst thin film | |
| WO2008106300A2 (en) | Process for making photocatalytic materials | |
| CN106739597B (en) | A kind of all print multifunctional transparent film and preparation method thereof | |
| KR20020045856A (en) | Photocatalyst coating sol capable of hardening at low temperature and preparation method thereof | |
| WO2001017922A1 (en) | Method and apparatus for producing glass having photocatalyst formed thereon | |
| CN113731386A (en) | Preparation method of fly ash-based photocatalytic material | |
| CN111389470A (en) | Preparation method of organic silicon-based titanium dioxide material | |
| CN107201660A (en) | A kind of hydrophobic coating material and coating production applied to PBO fiber surfaces | |
| CN102513074A (en) | Nanoparticle photocatalysis board, its preparation method and application thereof | |
| KR100308818B1 (en) | Hydrophilic coating glass coated with porous thin layer of TiO2 | |
| JP2003320257A (en) | Article for purifying environment and sol-gel production method of the same | |
| CN116273805B (en) | Self-cleaning multi-component nano coating and preparation method and application thereof | |
| KR20030084174A (en) | Direct adhesion method of photocatalyst on substrate | |
| CN116040960B (en) | Stable inorganic frame structure photocatalysis TiO2Method for producing film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220215 |
|
| WW01 | Invention patent application withdrawn after publication |