CN114308084A - Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material - Google Patents
Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material Download PDFInfo
- Publication number
- CN114308084A CN114308084A CN202210023490.1A CN202210023490A CN114308084A CN 114308084 A CN114308084 A CN 114308084A CN 202210023490 A CN202210023490 A CN 202210023490A CN 114308084 A CN114308084 A CN 114308084A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- lead
- free halogen
- photocatalytic material
- composite photocatalytic
- 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.)
- Pending
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 95
- 229910052736 halogen Inorganic materials 0.000 title claims abstract description 56
- 150000002367 halogens Chemical class 0.000 title claims abstract description 56
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 7
- 239000003446 ligand Substances 0.000 claims abstract description 5
- 238000001953 recrystallisation Methods 0.000 claims abstract description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 24
- LYQFWZFBNBDLEO-UHFFFAOYSA-M caesium bromide Chemical compound [Br-].[Cs+] LYQFWZFBNBDLEO-UHFFFAOYSA-M 0.000 claims description 20
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 10
- 239000002243 precursor Substances 0.000 claims description 10
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 5
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000003980 solgel method Methods 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011941 photocatalyst Substances 0.000 abstract description 2
- 238000003911 water pollution Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002159 adsorption--desorption isotherm Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a preparation method of a titanium dioxide/lead-free halogen system perovskite composite photocatalytic material. Firstly, a ligand-assisted recrystallization method is used for preparing the lead-free halogen perovskite. Then, a certain amount of titanium dioxide is weighed and ultrasonically dispersed in a solvent to obtain a titanium dioxide solution. The lead-free halogen perovskite is added into a titanium dioxide solution according to a certain proportion and stirred for a period of time at a certain temperature. And finally, centrifuging and drying the mixed solution to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material. The invention will not contain leadThe halogen perovskite is loaded on the surface of the titanium dioxide, so that the specific surface area of the titanium dioxide is increased, and meanwhile, the photoresponse range is widened to a visible light region, so that the visible light catalytic performance of the titanium dioxide is effectively improved. The photocatalyst has wide application prospect, and can be used for water pollution treatment and CO2Reduction, hydrogen production and the like.
Description
Technical Field
The invention belongs to the field of photocatalytic materials, and particularly relates to a preparation method of a titanium dioxide/lead-free halogen system perovskite composite photocatalytic material.
Background
For many years, titanium dioxide has the advantages of high chemical stability, wide sources, low price and the like, and is most widely applied in the field of photocatalysis. But the wider band gap and the photocatalysis function of the titanium dioxide are excited by ultraviolet light, the utilization rate of visible light is extremely low, and the photocatalysis performance of the titanium dioxide is extremely limited due to easy recombination of photoproduction electrons and holes. Therefore, how to improve the photocatalytic performance of titanium dioxide has become a focus.
As a novel semiconductor material, the lead-free halogen perovskite has the advantages of strong visible light absorption capacity, large specific surface area, many surface active sites, low toxicity and the like, and is gradually applied to a plurality of fields such as photocatalytic hydrogen production, photocatalytic NO reduction, pollutant degradation and the like as a photocatalyst in recent years (Angewandte chemical Edition, 2019, 58: 7263-. The lead-free halogen perovskite is loaded on the surface of titanium dioxide, so that the specific surface area of the titanium dioxide is hopefully improved, and the visible light catalytic performance of the titanium dioxide is enhanced.
Disclosure of Invention
The invention aims to provide a preparation method of a titanium dioxide/lead-free halogen system perovskite composite photocatalytic material.
The technical scheme adopted by the invention is as follows:
a preparation method of a titanium dioxide/lead-free halogen perovskite composite photocatalytic material comprises the steps of firstly weighing titanium dioxide, dispersing the titanium dioxide in a solvent in an ultrasonic mode to obtain a titanium dioxide solution, then adding lead-free halogen perovskite into the titanium dioxide solution in proportion, stirring, and finally centrifuging and drying mixed liquid to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
The method specifically comprises the following steps:
step one, weighing titanium dioxide powder, and ultrasonically dispersing the titanium dioxide powder in an absolute ethyl alcohol, isopropanol or chloroform solvent to obtain a titanium dioxide solution;
and step two, adding the lead-free halogen perovskite into the titanium dioxide solution obtained in the step two, stirring for 30-60 min at 10-35 ℃, finally, centrifuging the mixed solution for 10-30 min at the centrifugal speed of 2000-8000 rpm/min, taking the bottom precipitate, and drying in an oven at 30-60 ℃ for 1-3 h to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
The size range of the lead-free halogen perovskite is 5-1000 nm, and the preparation method is a ligand assisted recrystallization method or a thermal injection method.
The method for preparing the lead-free halogen perovskite by the ligand assisted recrystallization comprises the following specific steps:
first, CsBr, AgBr and BiBr were added3Adding into a glass bottle filled with dimethyl sulfoxide, and performing ultrasonic treatment for 180 min to obtain a transparent light yellow-green precursor solution; and then dripping the precursor solution into an isopropanol solvent in a high-speed stirring state at the speed of 1 drop/s, stirring for 5-30 min, and centrifuging to obtain the lead-free perovskite solution.
CsBr, AgBr, BiBr3The mass-to-volume ratio of the dimethyl sulfoxide to the dimethyl sulfoxide is 6-10 mg: 1-4 mg: 6-10 mg: 0.6-1.2 mL.
The titanium dioxide is commercially available titanium dioxide or self-made titanium dioxide by a sol-gel method or a hydrothermal method.
In the second step, the mass volume ratio of the titanium dioxide to the solvent is 1-10 mg:50ml, the ultrasonic power is 40-80 kHz, and the ultrasonic time is 30-90 min.
The invention has the following advantages:
1. the invention relates to a preparation method of a titanium dioxide/lead-free halogen perovskite composite photocatalytic material, which is green and environment-friendly, and has the advantages of convenient preparation method and short reaction time.
2. The titanium dioxide/lead-free halogen perovskite composite photocatalytic material has good photocatalytic activity and good stability under visible light.
3. The structure of the titanium dioxide/lead-free halogen system perovskite composite photocatalytic material is that one part of perovskite is loaded on the surface of titanium dioxide, and the other part of perovskite is embedded in the pores of titanium dioxide, so that the migration speed of electrons and holes between the two interfaces is increased. Meanwhile, the structure can lead the titanium dioxide, the perovskite and the composite photocatalytic material to carry out photocatalytic degradation reaction cooperatively.
Drawings
FIG. 1 is a graph showing the photocatalytic rate of a lead-free halogen-based perovskite and a titanium dioxide/lead-free halogen-based perovskite composite material produced in example 2 of the present invention.
FIG. 2 shows N of titanium dioxide and titanium dioxide/lead-free halogen-based perovskite composite material obtained in example 2 of the present invention2Adsorption-desorption isotherms (a) and pore size profiles (b).
FIG. 3 is a UV spectrum (a) and a band gap energy calculation chart (b) of titanium dioxide, a lead-free halogen-based perovskite, and a titanium dioxide/lead-free halogen-based perovskite composite material.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention aims to provide a preparation method of a titanium dioxide/lead-free halogen system perovskite composite photocatalytic material. The prepared titanium dioxide/lead-free halogen perovskite composite photocatalytic material has large specific surface area and many surface active sites. Meanwhile, the introduction of the lead-free halogen perovskite widens the light absorption of the composite material to a visible light range, and is also beneficial to improving the separation efficiency of photo-generated electrons and holes, thereby improving the photocatalytic performance of the material.
Example 1
Firstly, CsBr, AgBr and BiBr are added3Adding into a glass bottle filled with dimethyl sulfoxide, and performing ultrasonic treatment for 180 min to obtain a transparent light yellow-green precursor solution; and then dripping the precursor solution into an isopropanol solvent in a high-speed stirring state at the speed of 1 drop/s, stirring for 5 min, and centrifuging to obtain the lead-free perovskite solution. CsBr, AgBr, BiBr3The mass-to-volume ratio of the total amount of the active carbon to the dimethyl sulfoxide was 6mg:1mg: 6mg:0.6 mL.
And step two, weighing a certain amount of titanium dioxide powder, and ultrasonically dispersing the titanium dioxide powder in absolute ethyl alcohol to obtain a titanium dioxide solution. Wherein the mass volume ratio of the titanium dioxide to the solvent is 1mg:50ml, the ultrasonic power is 40 kHz, and the ultrasonic time is 30 min.
And step three, adding the lead-free halogen perovskite obtained in the step one into the titanium dioxide solution, and stirring for 30 min at 10 ℃. And finally, centrifuging the mixed solution for 10 min at the centrifugal speed of 2000 rpm/min, taking the bottom precipitate, and drying in an oven at the temperature of 30 ℃ for 1 h to obtain the titanium dioxide/lead-free halogen system perovskite composite photocatalytic material.
Example 2
Firstly, CsBr, AgBr and BiBr are added3Adding into a glass bottle filled with dimethyl sulfoxide, and performing ultrasonic treatment for 180 min to obtain a transparent light yellow-green precursor solution; and then dripping the precursor solution into an isopropanol solvent in a high-speed stirring state at the speed of 1 drop/s, stirring for 15 min, and centrifuging to obtain the lead-free perovskite solution. CsBr, AgBr, BiBr3The mass-to-volume ratio of the total amount of the active carbon to the dimethyl sulfoxide was 8mg:2mg: 8mg:0.8 mL.
And step two, weighing a certain amount of titanium dioxide powder, and ultrasonically dispersing the titanium dioxide powder in isopropanol to obtain a titanium dioxide solution. Wherein the mass volume ratio of the titanium dioxide to the solvent is 5mg:50ml, the ultrasonic power is 60 kHz, and the ultrasonic time is 60 min.
And step three, adding the lead-free halogen perovskite obtained in the step one into the titanium dioxide solution, and stirring for 30-60 min at the temperature of 10-35 ℃. And finally, centrifuging the mixed solution for 20 min at the speed of 5000rpm/min, taking the bottom precipitate, and drying in an oven at the temperature of 45 ℃ for 2 h to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
Example 3
Firstly, CsBr, AgBr and BiBr are added3Adding into a glass bottle filled with dimethyl sulfoxide, and performing ultrasonic treatment for 180 min to obtain a transparent light yellow-green precursor solution; then dropwise adding the precursor solution into isopropanol in a high-speed stirring state at the speed of 1 drop/sStirring the solution in a solvent for 30 min, and centrifuging to obtain the lead-free perovskite solution. CsBr, AgBr, BiBr3The mass-to-volume ratio of the total amount of the active carbon to the dimethyl sulfoxide is 10mg:4mg: 10mg:1.2 mL.
And step two, weighing a certain amount of titanium dioxide powder, and ultrasonically dispersing the titanium dioxide powder in isopropanol to obtain a titanium dioxide solution. Wherein the mass volume ratio of the titanium dioxide to the solvent is 10mg:50ml, the ultrasonic power is 80 kHz, and the ultrasonic time is 90 min.
And step three, adding the lead-free halogen perovskite obtained in the step one into the titanium dioxide solution, and stirring for 60 min at 35 ℃. And finally, centrifuging the mixed solution for 30 min at the speed of 8000rpm/min, taking the bottom precipitate, and drying in an oven at the temperature of 60 ℃ for 3 h to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
Fig. 1 is a graph showing the photocatalytic rate of a lead-free halogen-based perovskite and a titanium dioxide/lead-free halogen-based perovskite composite material in example 2, and the specific procedure is as follows.
Rhodamine B (Rh B) is selected as a simulated pollutant, and the performance of the titanium dioxide/lead-free halogen perovskite composite photocatalytic material for catalyzing and degrading Rh B under the irradiation of visible light is tested. The method comprises the following specific operations: weighing a certain amount of titanium dioxide/lead-free halogen perovskite composite photocatalytic material, adding the titanium dioxide/lead-free halogen perovskite composite photocatalytic material into a beaker filled with Rh B solution with the concentration of 10 mg/L, stirring for a certain time at room temperature to enable the titanium dioxide/lead-free halogen perovskite composite photocatalytic material to reach adsorption balance, and turning on a visible light lamp source to perform photocatalytic reaction. The photocatalytic degradation process is monitored by an ultraviolet-visible spectrophotometer.
As can be seen from FIG. 1, compared with perovskite, the catalytic degradation rate of the titanium dioxide/lead-free halogen system perovskite composite photocatalytic material on rhodamine B is obviously improved.
As can be analyzed from fig. 2, the perovskite is mostly supported on the surface of the titanium dioxide to increase its specific surface area, and a small portion is embedded in the pores of the titanium dioxide to reduce the average pore diameter.
As can be seen from fig. 3, the composition of titanium dioxide and lead-free halogen-based perovskite helps to improve the photoresponse capability to the visible light region, thereby improving the catalytic performance of the composite material under visible light conditions.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (7)
1. A preparation method of a titanium dioxide/lead-free halogen perovskite composite photocatalytic material is characterized by comprising the following steps:
firstly, weighing titanium dioxide, ultrasonically dispersing the titanium dioxide in a solvent to obtain a titanium dioxide solution, then adding lead-free halogen perovskite into the titanium dioxide solution in proportion, stirring, and finally centrifuging and drying the mixed solution to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
2. The preparation method of the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 1, which is characterized by comprising the following steps:
step one, weighing titanium dioxide powder, and ultrasonically dispersing the titanium dioxide powder in an absolute ethyl alcohol, isopropanol or chloroform solvent to obtain a titanium dioxide solution;
and step two, adding the lead-free halogen perovskite into the titanium dioxide solution obtained in the step two, stirring for 30-60 min at 10-35 ℃, finally, centrifuging the mixed solution for 10-30 min at the centrifugal speed of 2000-8000 rpm/min, taking the bottom precipitate, and drying in an oven at 30-60 ℃ for 1-3 h to obtain the titanium dioxide/lead-free halogen perovskite composite photocatalytic material.
3. The method for preparing the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 2, wherein the method comprises the following steps:
the size range of the lead-free halogen perovskite is 5-1000 nm, and the preparation method is a ligand assisted recrystallization method or a thermal injection method.
4. The method for preparing the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 3, wherein the method comprises the following steps:
the method for preparing the lead-free halogen perovskite by the ligand assisted recrystallization comprises the following specific steps:
first, CsBr, AgBr and BiBr were added3Adding into a glass bottle filled with dimethyl sulfoxide, and performing ultrasonic treatment for 180 min to obtain a transparent light yellow-green precursor solution; and then dripping the precursor solution into an isopropanol solvent in a high-speed stirring state at the speed of 1 drop/s, stirring for 5-30 min, and centrifuging to obtain the lead-free perovskite solution.
5. The method for preparing the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 4, wherein the method comprises the following steps:
CsBr, AgBr, BiBr3The mass-to-volume ratio of the dimethyl sulfoxide to the dimethyl sulfoxide is 6-10 mg: 1-4 mg: 6-10 mg: 0.6-1.2 mL.
6. The method for preparing the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 2, wherein the method comprises the following steps:
the titanium dioxide is commercially available titanium dioxide or self-made titanium dioxide by a sol-gel method or a hydrothermal method.
7. The method for preparing the titanium dioxide/lead-free halogen-based perovskite composite photocatalytic material as claimed in claim 6, wherein the method comprises the following steps:
in the second step, the mass volume ratio of the titanium dioxide to the solvent is 1-10 mg:50ml, the ultrasonic power is 40-80 kHz, and the ultrasonic time is 30-90 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023490.1A CN114308084A (en) | 2022-01-10 | 2022-01-10 | Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023490.1A CN114308084A (en) | 2022-01-10 | 2022-01-10 | Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114308084A true CN114308084A (en) | 2022-04-12 |
Family
ID=81026656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210023490.1A Pending CN114308084A (en) | 2022-01-10 | 2022-01-10 | Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114308084A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465891A (en) * | 2022-09-30 | 2022-12-13 | 云南师范大学 | Application ball mill for preparing nano Cs 2 AgBiBr 6 /TiO 2 Method for compounding materials |
| CN115970715A (en) * | 2022-09-30 | 2023-04-18 | 云南师范大学 | Z-shaped heterojunction Cs 2 AgBiBr 6 /TiO 2 Composite material and method for producing the same |
| CN116212918A (en) * | 2022-12-28 | 2023-06-06 | 四川启睿克科技有限公司 | CABI@C 3 N 4 Heterojunction catalyst and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055513A (en) * | 1976-04-13 | 1977-10-25 | Exxon Research & Engineering Co. | Perovskite catalysts and process for their preparation |
| CN106890645A (en) * | 2016-10-18 | 2017-06-27 | 浙江树人大学 | A kind of perovskite oxide doping TiO2Photochemical catalyst and preparation method thereof |
| CN108855156A (en) * | 2018-07-18 | 2018-11-23 | 河南工业大学 | A kind of full-inorganic non-lead perovskite composite Ti O2Nano wire and preparation method thereof |
| CN110003907A (en) * | 2019-04-14 | 2019-07-12 | 天津大学 | A kind of synthetic method that non-lead double-perovskite is nanocrystalline |
| CN110616461A (en) * | 2019-10-17 | 2019-12-27 | 南京信息工程大学 | Cs (volatile organic Compounds)2AgBiBr6Preparation method of type double perovskite crystal |
| CN112295576A (en) * | 2020-10-27 | 2021-02-02 | 苏州大学 | Cs3Bi2Br9/TiO2Perovskite heterojunction, preparation method thereof and application of perovskite heterojunction in photocatalytic toluene oxidation |
-
2022
- 2022-01-10 CN CN202210023490.1A patent/CN114308084A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055513A (en) * | 1976-04-13 | 1977-10-25 | Exxon Research & Engineering Co. | Perovskite catalysts and process for their preparation |
| CN106890645A (en) * | 2016-10-18 | 2017-06-27 | 浙江树人大学 | A kind of perovskite oxide doping TiO2Photochemical catalyst and preparation method thereof |
| CN108855156A (en) * | 2018-07-18 | 2018-11-23 | 河南工业大学 | A kind of full-inorganic non-lead perovskite composite Ti O2Nano wire and preparation method thereof |
| CN110003907A (en) * | 2019-04-14 | 2019-07-12 | 天津大学 | A kind of synthetic method that non-lead double-perovskite is nanocrystalline |
| CN110616461A (en) * | 2019-10-17 | 2019-12-27 | 南京信息工程大学 | Cs (volatile organic Compounds)2AgBiBr6Preparation method of type double perovskite crystal |
| CN112295576A (en) * | 2020-10-27 | 2021-02-02 | 苏州大学 | Cs3Bi2Br9/TiO2Perovskite heterojunction, preparation method thereof and application of perovskite heterojunction in photocatalytic toluene oxidation |
Non-Patent Citations (1)
| Title |
|---|
| 范倩倩: ""基于酪素胶束模板的多孔TiO2复合材料及其在功能涂层中的应用"", 《中国博士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465891A (en) * | 2022-09-30 | 2022-12-13 | 云南师范大学 | Application ball mill for preparing nano Cs 2 AgBiBr 6 /TiO 2 Method for compounding materials |
| CN115970715A (en) * | 2022-09-30 | 2023-04-18 | 云南师范大学 | Z-shaped heterojunction Cs 2 AgBiBr 6 /TiO 2 Composite material and method for producing the same |
| CN115465891B (en) * | 2022-09-30 | 2023-11-10 | 云南师范大学 | Use ball mill preparation nanometer Cs 2 AgBiBr 6 /TiO 2 Method for producing composite materials |
| CN115970715B (en) * | 2022-09-30 | 2024-07-16 | 云南师范大学 | Z-type heterojunction Cs2AgBiBr6/TiO2Composite material and preparation method thereof |
| CN116212918A (en) * | 2022-12-28 | 2023-06-06 | 四川启睿克科技有限公司 | CABI@C 3 N 4 Heterojunction catalyst and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114308084A (en) | Preparation method of titanium dioxide/lead-free halogen perovskite composite photocatalytic material | |
| Meng et al. | Construction of g-C3N4/ZIF-67 photocatalyst with enhanced photocatalytic CO2 reduction activity | |
| CN111530485B (en) | Carbon and nitrogen co-doped titanium dioxide nano material and preparation method and application thereof | |
| CN105597820B (en) | The carbonitride of one species graphite-phase/tetracarboxylic phenyl porphyrin nano composite and preparation method thereof | |
| CN112521618B (en) | Bismuth-based metal organic framework material and preparation method and application thereof | |
| CN107008467B (en) | Preparation method and application of heterojunction photocatalyst | |
| CN107952464B (en) | Novel photocatalytic material and double-photocatalytic-electrode self-bias pollution control system | |
| US20040058808A1 (en) | Method of preparation of non-platinum composite electrocatalyst for cathode of fuel cell | |
| CN113318794B (en) | Preparation method and application of plasmon composite photocatalyst Pd/DUT-67 | |
| CN114904574B (en) | Platinum single atom/cluster modified photosensitization system and preparation method and application thereof | |
| CN103028386A (en) | Ti<3+> and carbon codoped TiO2 photocatalyst with visible-light activity and preparation method of TiO2 photocatalyst | |
| CN110252410A (en) | A kind of Three-element composite photocatalyst, preparation method and application | |
| CN108704662A (en) | A kind of metalloporphyrin/graphite phase carbon nitride composite photo-catalyst | |
| CN115463667B (en) | Preparation method of composite photocatalytic nitrogen fixation material with iridium loaded by cuprous oxide of different crystal planes | |
| CN114471655A (en) | Preparation method of composite photocatalyst for efficiently generating hydrogen peroxide under visible light without adding sacrificial agent | |
| CN106925248A (en) | The oxygen-containing vacancy strontium titanates catalysis material of hydroxyl modified and its preparation and application | |
| CN114534783B (en) | Method for preparing single-atom Pt-embedded covalent organic framework photocatalyst and application thereof | |
| CN114644320B (en) | Photocatalytic hydrogen production system and application thereof | |
| CN110694655A (en) | Preparation method of silver sulfide/silver phosphate/graphene oxide composite photocatalyst | |
| CN114588897B (en) | Composite porous photocatalyst material and preparation method and application thereof | |
| CN113680364B (en) | Meta-aminophenylboronic acid doped graphite-phase carbon nitride photocatalyst, preparation method and application thereof | |
| CN115414967A (en) | Ag @ ZIF-8@ g-C 3 N 4 Composite photocatalyst and preparation method and application thereof | |
| CN112246256B (en) | Piezoelectric catalytic degradation and ammonia synthesis catalyst, and preparation method and application thereof | |
| Tao et al. | Visible‐Light‐Responsive TiO2/NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production | |
| CN113797910A (en) | Defect-containing nano microspheric perovskite catalyst and preparation method and application thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220412 |