CN117943120A - Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof - Google Patents
Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof Download PDFInfo
- Publication number
- CN117943120A CN117943120A CN202410111691.6A CN202410111691A CN117943120A CN 117943120 A CN117943120 A CN 117943120A CN 202410111691 A CN202410111691 A CN 202410111691A CN 117943120 A CN117943120 A CN 117943120A
- Authority
- CN
- China
- Prior art keywords
- cofs
- tppa
- coo
- photocatalyst
- modified
- 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
- 239000013310 covalent-organic framework Substances 0.000 title claims abstract description 55
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910002451 CoOx Inorganic materials 0.000 title description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 229910052724 xenon Inorganic materials 0.000 claims description 8
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 8
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 7
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 7
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 19
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract description 16
- 239000003054 catalyst Substances 0.000 abstract description 8
- 238000002256 photodeposition Methods 0.000 abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- AEKQNAANFVOBCU-UHFFFAOYSA-N benzene-1,3,5-tricarbaldehyde Chemical compound O=CC1=CC(C=O)=CC(C=O)=C1 AEKQNAANFVOBCU-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Catalysts (AREA)
Abstract
The invention belongs to the technical field of catalysts, and particularly relates to a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full-water-splitting photocatalyst, a preparation method and application thereof. The TpPa-COFs/g-C 3N4 photocatalyst is synthesized in one step by utilizing an in-situ reaction method, and Pt and CoO x are loaded by a photo-deposition method. Compared with the composite method in the prior art, the interface bonding acting force of the two materials is stronger; the carbon nitride is introduced in the COFs synthesis process, so that the COFs can tightly wrap the carbon nitride, the carbon nitride and the carbon nitride are distributed more uniformly, and the utilization rate is higher; pt and CoO x are loaded by adopting a one-step photo-deposition method, so that Pt and CoO x can be respectively loaded at a reduction site and an oxidation site, and the utilization efficiency of electrons and holes is improved; the preparation method is green and environment-friendly, simple, high in yield, efficient and economical. The photocatalyst can decompose water in pure water under visible light to prepare hydrogen and oxygen, and can be applied to research of other photocatalytic properties in the field of photocatalysis.
Description
Technical Field
The invention belongs to the technical field of catalysts, and particularly relates to a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full-water-splitting photocatalyst, a preparation method and application thereof.
Background
With the rapid development of industry and the continuous progress of social civilization, the consumption of fossil fuels such as petroleum is increasing, and the environmental pressure caused by the combustion of fossil fuels is also becoming very severe. Development of green new energy is an effective way to reduce fossil fuel use and to alleviate environmental pollution. Solar energy is a natural clean energy source and is not limited by space and territory. The conversion of solar energy into usable chemical energy is a quick means for solving the global resource crisis.
The key point of converting solar energy into chemical energy is the development and use of photocatalysts, which are commonly used at present can be classified into metal oxides, metal sulfides, metal phosphides, carbon-nitrogen polymers and the like, wherein the carbon-nitrogen polymers are environment-friendly in terms of components, and the preparation process is simple and receives extensive attention. Carbon nitride is a commonly used carbon-nitrogen polymer photocatalyst and has been successfully applied to the fields of photocatalytic water decomposition, photocatalytic pollutant degradation, photocatalytic sterilization and the like. However, carbon nitride has poor visible light reaction and electron-hole pair separation is difficult, which results in low photocatalytic activity.
The method of compounding other photocatalysts makes up the shortages of carbon nitride, and is a common means for improving the photocatalytic activity of the carbon nitride. The covalent organic framework is a new type of photocatalyst in recent years, and has excellent photocatalytic performance due to controllable structure and large specific surface area. TpPa-COFs are covalent organic frameworks which have relatively excellent photocatalytic water splitting properties. TpPa COFs the preparation process is mature and contains a large number of carboxyl groups. The carboxyl base is easy to react with amino groups on carbon nitride and form imine bonds, which provides a theoretical basis for preparing tightly combined TpPa-COFs/g-C 3N4 photocatalyst. However, in the process of decomposing water by photocatalysis, a hole sacrificial agent is generally added to promote the hydrogen evolution reaction, and the hole sacrificial agent is mostly an organic solvent and is not recyclable, so that secondary pollution is caused.
Thus, it is reasonably feasible and necessary to prepare a catalyst that can decompose water without sacrificing.
Disclosure of Invention
Based on theoretical reaction, the invention overcomes the defects of the prior art, and provides a simple and controllable Pt and CoO x co-modified TpPa-COFs/g-C 3N4 composite photocatalyst, a preparation method and application thereof. TpPa-COFs/g-C 3N4 photocatalyst is synthesized in one step by using an in-situ reaction method, and Pt and CoO x are loaded by a photo-deposition method. The photocatalyst can decompose water in pure water under visible light to prepare hydrogen and oxygen, and can be applied to research of other photocatalytic properties in the field of photocatalysis.
In order to achieve the above object, the present invention provides the following technical solutions:
A preparation method of a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst comprises the following steps:
(1) Calcining melamine in a muffle furnace to obtain g-C 3N4;
(2) Uniformly mixing g-C 3N4 in the step (1) with 1,3, 5-benzene tricaldehyde, p-phenylenediamine, trimethylbenzene, dioxane and acetic acid, heating at 115-125 ℃ for reaction, and cleaning and drying the obtained powder to obtain TpPa-COFs/g-C 3N4 composite photocatalyst;
(3) Dispersing the composite photocatalyst obtained in the step (2) into deionized water, adding chloroplatinic acid and cobalt chloride, stirring uniformly, and carrying out irradiation reaction by a xenon lamp to obtain the TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst co-modified by Pt and CoO x.
Preferably, the calcination of the melamine in step (1) is: heating to 500-550 ℃ from room temperature of 20-25 ℃ at a speed of 5-10 ℃/min for calcination; further preferably, the calcination time is 2 to 3 hours.
Preferably, the mass volume ratio of the g-C 3N4 to the 1,3, 5-benzene tricarboxaldehyde, the p-phenylenediamine, the trimethylbenzene, the dioxane and the acetic acid in the step (2) is (2-36 mg): (50-70 mg): (30-50 mg): (1-2 mL): (1-2 mL): (18-180 mg).
Preferably, the heating reaction time in step (2) is 2-3 days.
Preferably, the washing in the step (2) is carried out by washing with deionized water for 5-8 times; the drying is vacuum drying at 180-200 deg.c for 24-48 hr.
Preferably, the mass ratio of the composite photocatalyst to chloroplatinic acid and cobalt chloride in the step (3) is (1-20): (0.03-0.6): (0.03-0.6).
Preferably, the xenon lamp in the step (3) irradiates with visible light with a wavelength of more than 420 nm.
Preferably, in the step (3), the irradiation time of the xenon lamp is 20-60 minutes, and the reaction system is in a vacuum state when the xenon lamp irradiates.
The invention also provides the TpPa-COFs/g-C 3N4 composite photocatalyst co-modified by Pt and CoO x prepared by the method.
The invention also provides application of the TpPa-COFs/g-C 3N4 composite photocatalyst co-modified by Pt and CoO x in full water dissolution.
Compared with the prior art, the invention has the following advantages:
(1) The TpPa-COFs/g-C 3N4 composite photocatalyst is prepared by the in-situ heating method, and compared with the composite method in the prior art, the interface bonding acting force of the two materials is stronger.
(2) According to the invention, the carbon nitride is introduced in the COFs synthesis process, so that the COFs tightly wrap the carbon nitride, the carbon nitride and the carbon nitride are distributed more uniformly, and the utilization rate is higher.
(3) The preparation method provided by the invention is environment-friendly, simple, high in yield, and the obtained photocatalyst can decompose water in pure water, so that the preparation method is efficient and economical.
(4) The Pt and CoO x are loaded by adopting the one-step photo-deposition method, so that the Pt and the CoO x are respectively loaded at the reduction site and the oxidation site, and the utilization efficiency of electrons and holes is improved.
Drawings
FIG. 1 is an XRD analysis pattern of the photocatalyst obtained in example 1;
Fig. 2 is a TEM image of the photocatalyst obtained in example 1.
Detailed Description
The invention will be further described with reference to specific embodiments, and advantages and features of the invention will become apparent from the description. The embodiments are merely exemplary and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present invention may be made without departing from the spirit and scope of the present invention, but these changes and substitutions fall within the scope of the present invention.
Example 1
A preparation method of a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst comprises the following steps:
(1) 10g of melamine is placed in a muffle furnace, the temperature is raised from the room temperature of 20-25 ℃ to 550 ℃ at 5 ℃/min, the heat is preserved for 3 hours, and the prepared carbon nitride is ground into powder for later use, and is marked as g-C 3N4.
(2) 20Mg of g-C 3N4 is taken and evenly mixed with 63mg of 1,3, 5-benzene tricarbaldehyde, 48mg of p-phenylenediamine, 1.5mL of trimethylbenzene, 1.5mL of dioxane and 0.5mL of 3M acetic acid, the mixture is heated for 3 days at 120 ℃, the obtained powder is washed with deionized water for 6 times, and vacuum drying is carried out at 180 ℃ for 24 hours, thus obtaining TpPa-COFs/g-C 3N4 composite photocatalyst.
(3) Dispersing 5mg TpPa-COFs/g-C 3N4 catalyst in 50mL deionized water, adding 0.15mg chloroplatinic acid and 0.15mg cobalt chloride, stirring uniformly, vacuumizing the system, irradiating for 30 minutes by adopting a visible light irradiation system with the wavelength of more than 420nm, filtering the solution, and drying in vacuum to obtain powder which is the TpPa-COFs/g-C 3N4 full-water-dissolving photocatalyst co-modified by Pt and CoO x and is marked as Pt/TpPa-COFs/g-C 3N4/CoOx -1.
As can be seen from the XRD pattern of FIG. 1, the composite material contained TpPa-COF and g-C 3N4, indicating that the TpPa-COFs/g-C 3N4 composite material was successfully synthesized, and that the diffraction peaks of Pt and CoO x were unlikely to be due to too little content of Pt and CoO x. The successful loading of Pt and CoO x on the catalyst surface can be found by TEM image, which shows that the preparation of the Pt/TpPa-COFs/g-C 3N4/CoOx catalyst in the invention is successful.
Example 2
A method for preparing a TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst co-modified by Pt and CoO x is different from example 1 in that the addition amount of chloroplatinic acid is 0.45mg, and the addition amount is marked as Pt/TpPa-COFs/g-C 3N4/CoOx -3.
Example 3
A method for preparing a TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst co-modified by Pt and CoO x is different from example 1 in that the addition amount of chloroplatinic acid is 0.6mg, and the addition amount is marked as Pt/TpPa-COFs/g-C 3N4/CoOx -5.
Comparative example 1
63Mg of 1,3, 5-benzene tricarboxaldehyde, 48mg of p-phenylenediamine, 1.5mL of trimethylbenzene, 1.5mL of dioxane and 0.5mL of 3M acetic acid were uniformly mixed, the mixture was heated at 120℃for 3 days, the obtained powder was washed with deionized water 6 times, and vacuum-dried at 180℃for 24 hours to obtain TpPa-COFs.
Comparative example 2
10G of melamine is placed in a muffle furnace, the temperature is raised from room temperature to 550 ℃ at 5 ℃/min and kept for 3 hours, and the prepared carbon nitride is ground into powder for later use, and is marked as g-C 3N4.
Comparative example 3
20Mg of g-C 3N4 is taken and evenly mixed with 63mg of 1,3, 5-benzene tricarbaldehyde, 48mg of p-phenylenediamine, 1.5mL of trimethylbenzene, 1.5mL of dioxane and 0.5mL of 3M acetic acid, the mixture is heated for 3 days at 120 ℃, the obtained powder is washed with deionized water for 6 times, and vacuum drying is carried out at 180 ℃ for 24 hours, thus obtaining TpPa-COFs/g-C 3N4 composite photocatalyst.
Comparative example 4
The TpPa-COFs/g-C 3N4 composite photocatalyst obtained in comparative example 3 was dispersed in 50mL of water, 0.45mg of chloroplatinic acid was added, and the resultant was irradiated under light of >420nm for 30 minutes to obtain Pt/TpPa-COFs/g-C 3N4.
Comparative example 5
The TpPa-COFs/g-C 3N4 composite photocatalyst obtained in comparative example 3 was dispersed in 50mL of water, 0.45mg of cobalt chloride was added, and the mixture was irradiated under light of >420nm for 30 minutes to obtain TpPa-COFs/g-C 3N4 CoOx.
Application:
Photocatalytic full water splitting test: 5mg of photocatalyst is dispersed into 50mL of pure water, a Porphy photocatalytic online analysis system is adopted to carry out photocatalytic full water splitting test, and visible light lambda is more than 420nm.
The results of the photocatalytic total water splitting are shown in table 1.
TABLE 1 photocatalytic Water decomposition test results in examples and comparative examples
From the above test results, it was found that the prepared sample was subjected to a water decomposition test in pure water under visible light. The photocatalytic activity increases and then decreases with increasing Pt content, because a large amount of Pt covers the active site to deteriorate the photocatalytic activity. In the comparative examples, tpPa-COFs, g-C 3N4 and TpPa-COFs/g-C 3N4 did not have the full water-splitting effect when Pt and Co were not doped, because the catalyst had poor water-splitting driving force when Pt and Co were not doped, and the electron-hole pair separation of the catalyst was difficult. The Pt and CoO x are used as a water reduction promoter and a water oxidation promoter in the pure water decomposition experiment respectively, so that the full water decomposition experiment is promoted.
According to the invention, the preparation of the Pt and CoO x co-modified covalent organic framework/carbon nitride photocatalyst can be realized by adjusting the technological parameters, and the performance basically consistent with the invention, namely the application in full water dissolution, is shown by test. The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (10)
1. A preparation method of a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst is characterized by comprising the following steps:
(1) Calcining melamine in a muffle furnace to obtain g-C 3N4;
(2) Uniformly mixing g-C 3N4 in the step (1) with 1,3, 5-benzene tricaldehyde, p-phenylenediamine, trimethylbenzene, dioxane and acetic acid, heating at 115-125 ℃ for reaction, and cleaning and drying the obtained powder to obtain TpPa-COFs/g-C 3N4 composite photocatalyst;
(3) Dispersing the composite photocatalyst obtained in the step (2) into deionized water, adding chloroplatinic acid and cobalt chloride, stirring uniformly, and carrying out irradiation reaction by a xenon lamp to obtain the TpPa-COFs/g-C 3N4 full-hydrolysis photocatalyst co-modified by Pt and CoO x.
2. The method for preparing a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full water splitting photocatalyst according to claim 1, wherein the calcining of melamine in step (1) is: heating to 500-550 ℃ from room temperature of 20-25 ℃ at a speed of 5-10 ℃/min for calcination; preferably, the calcination time is 2 to 3 hours.
3. The method for preparing a fully water-splitting photocatalyst of TpPa-COFs/g-C 3N4 co-modified by Pt and CoO x as claimed in claim 1, wherein the mass-volume ratio of g-C 3N4 to 1,3, 5-benzene tricaldehyde, p-phenylenediamine, trimethylbenzene, dioxane and acetic acid in the step (2) is (2-36 mg): (50-70 mg): (30-50 mg): (1-2 mL): (1-2 mL): (18-180 mg).
4. The method for preparing a full water splitting photocatalyst of TpPa-COFs/g-C 3N4 co-modified with Pt and CoO x as set forth in claim 1, wherein the heating reaction time in step (2) is 2-3 days.
5. The method of preparing a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full water splitting photocatalyst according to claim 1, wherein the washing in step (2) is carried out 5-8 times with deionized water; the drying is vacuum drying at 180-200 deg.c for 24-48 hr.
6. The method for preparing a fully water-splitting photocatalyst of TpPa-COFs/g-C 3N4 co-modified by Pt and CoO x as set forth in claim 1, wherein the mass ratio of the composite photocatalyst to chloroplatinic acid and cobalt chloride in the step (3) is (1-20): (0.03-0.6): (0.03-0.6).
7. The method for preparing a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 full water splitting photocatalyst according to claim 1, wherein the xenon lamp irradiation in step (3) uses visible light with a wavelength of > 420 nm.
8. The method for preparing a fully water-splitting photocatalyst of TpPa-COFs/g-C 3N4 co-modified by Pt and CoO x as claimed in claim 1, wherein the xenon lamp irradiation time in the step (3) is 20-60 minutes, and the reaction system is in a vacuum state when the xenon lamp is irradiated.
9. A composite photocatalyst TpPa-COFs/g-C 3N4 co-modified with Pt and CoO x prepared by the process according to any one of claims 1 to 8.
10. Use of a Pt and CoO x co-modified TpPa-COFs/g-C 3N4 composite photocatalyst according to claim 9 in full water splitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410111691.6A CN117943120A (en) | 2024-01-25 | 2024-01-25 | Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410111691.6A CN117943120A (en) | 2024-01-25 | 2024-01-25 | Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117943120A true CN117943120A (en) | 2024-04-30 |
Family
ID=90797495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410111691.6A Pending CN117943120A (en) | 2024-01-25 | 2024-01-25 | Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117943120A (en) |
-
2024
- 2024-01-25 CN CN202410111691.6A patent/CN117943120A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Luo et al. | Noble-metal-free cobaloxime coupled with metal-organic frameworks NH2-MIL-125: a novel bifunctional photocatalyst for photocatalytic NO removal and H2 evolution under visible light irradiation | |
| CN112007681A (en) | Preparation method and application of nitrogen-doped biological carbon-loaded monatomic iron | |
| Li et al. | Carbon vacancies improved photocatalytic hydrogen generation of g-C3N4 photocatalyst via magnesium vapor etching | |
| He et al. | Switching on photocatalytic NO oxidation and proton reduction of NH2-MIL-125 (Ti) by convenient linker defect engineering | |
| CN111389442A (en) | P-N heterojunction composite material loaded on surface of foamed nickel and preparation method and application thereof | |
| CN112473717B (en) | Nickel monoatomic/functionalized graphite-phase carbon nitride composite catalyst | |
| CN109999887B (en) | beta-FeOOH/g-C3N4Preparation method of heterojunction photocatalytic material | |
| CN113289653A (en) | g-C of load metal monoatomic3N4Method for preparing photocatalyst | |
| CN110975918A (en) | Indium zinc sulfide-nitrogen doped graphene foam composite photocatalytic material and preparation method and application thereof | |
| CN112439416A (en) | Preparation method and application of high-dispersion copper-loaded titanium dioxide nanosheet | |
| CN114471721A (en) | Single atom anchored TiO with metal sites2Photocatalyst and preparation method thereof | |
| CN110116015B (en) | Photocatalyst for completely decomposing water, preparation method and application thereof, reaction method for completely decomposing water through photocatalysis and catalytic mixed solution | |
| CN115646546A (en) | Preparation method of carbon-based bimetallic site catalytic material for producing formic acid by carbon dioxide hydrogenation | |
| CN113769764B (en) | CdS/Cu 7 S 4 /CdMoO 4 Preparation method and application of nano heterostructure | |
| CN113578358B (en) | Pt/NVC-g-C 3 N 4 Photocatalytic material and preparation method and application thereof | |
| CN115532298B (en) | Preparation method of diatomic cluster photocatalyst | |
| CN109772423B (en) | Phosphorus and bismuth co-doped porous graphite phase carbon nitride photocatalyst and application thereof | |
| CN114985004B (en) | Sulfur-indium-cadmium/PDDA/NiFe-LDH photocatalytic composite material and preparation method and application thereof | |
| CN113398968B (en) | MOF-derived TiO 2 Porous g-C 3 N 4 Composite photocatalyst, preparation method and application thereof | |
| CN117943120A (en) | Pt and CoOx co-modified TpPa-COFs/g-C3N4 full-water-splitting photocatalyst and preparation method and application thereof | |
| CN114308076B (en) | Composite photocatalyst, preparation method and application | |
| CN117258844A (en) | Preparation method of Co (II) visible light catalyst containing mixed ligand | |
| Chen et al. | Novel ionic liquid modified carbon nitride fabricated by in situ pyrolysis of 1-butyl-3-methylimidazolium cyanamide to improve electronic structure for efficiently degradation of bisphenol A | |
| CN110433850B (en) | Bimetallic catalyst for catalyzing hydrogenation deoxidation of veratryl alcohol and preparation method and application thereof | |
| CN114284513A (en) | Preparation method of nitrogen-doped graphite mono-alkyne supported noble metal nanoparticle electrocatalyst |
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 |