CN114752947B - Preparation method of high-activity and stability supported oxygen evolution catalyst - Google Patents
Preparation method of high-activity and stability supported oxygen evolution catalyst Download PDFInfo
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- CN114752947B CN114752947B CN202210376421.9A CN202210376421A CN114752947B CN 114752947 B CN114752947 B CN 114752947B CN 202210376421 A CN202210376421 A CN 202210376421A CN 114752947 B CN114752947 B CN 114752947B
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- 239000003054 catalyst Substances 0.000 title claims abstract description 46
- 230000000694 effects Effects 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000001301 oxygen Substances 0.000 title claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 13
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 30
- 239000002243 precursor Substances 0.000 claims abstract description 12
- 150000004032 porphyrins Chemical class 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 6
- 239000002135 nanosheet Substances 0.000 claims abstract description 6
- 239000002356 single layer Substances 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 19
- 239000013110 organic ligand Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 9
- 238000004108 freeze drying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- KLFRPGNCEJNEKU-FDGPNNRMSA-L (z)-4-oxopent-2-en-2-olate;platinum(2+) Chemical compound [Pt+2].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O KLFRPGNCEJNEKU-FDGPNNRMSA-L 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- FBEIPJNQGITEBL-UHFFFAOYSA-J tetrachloroplatinum Chemical compound Cl[Pt](Cl)(Cl)Cl FBEIPJNQGITEBL-UHFFFAOYSA-J 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 abstract description 7
- 238000011068 loading method Methods 0.000 abstract description 7
- 238000005054 agglomeration Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004220 aggregation Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract description 2
- 239000013067 intermediate product Substances 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- DANYXEHCMQHDNX-UHFFFAOYSA-K trichloroiridium Chemical compound Cl[Ir](Cl)Cl DANYXEHCMQHDNX-UHFFFAOYSA-K 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002082 metal nanoparticle Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 229910009819 Ti3C2 Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical group 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011943 nanocatalyst Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
- C25B11/097—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds comprising two or more noble metals or noble metal alloys
Abstract
The invention provides a preparation method of a high-activity and stability supported oxygen evolution catalyst, which comprises the following steps: 1) Preparing a Pt NPs@MXene carrier, namely uniformly dispersing single-layer MXene powder in an aqueous solution, adding the single-layer MXene powder into a precursor solution containing noble metal Pt, wherein the mass fraction of the noble metal Pt is 10 wt%, and adding a reducing agent to uniformly reduce the Pt on a nano sheet of the MXene to obtain the Pt NPs@MXene carrier; 2) Compared with the prior art, the method for preparing the single-atom catalyst has the following beneficial effects: the problem of agglomeration in the noble metal loading process is solved, and the loading capacity and stability are improved. The preparation method of the catalyst provided by the invention mainly comprises the steps of firstly loading a layer of Pt NPs of 2-3 nm on a carrier MXene to obtain the catalyst Pt NPs@MXene, wherein the main function is to isolate Ir monoatoms and avoid agglomeration of the Ir monoatoms. In addition, ir atoms are anchored on porphyrin or phenanthroline to solve the aggregation of the Ir atoms, and then the Ir atoms and Pt NPs@MXene are loaded and annealed at high temperature to form Ir monoatoms.
Description
Technical Field
The invention belongs to the field of catalysts, and particularly relates to a preparation method of a supported IrSAC@Pt NPs@MXene oxygen evolution catalyst with high activity and stability.
Background
Water electrolysis for hydrogen production (2H2O→O2+2H2) is attracting attention in the scientific community as a method for effectively obtaining clean energy. Wherein, the oxygen evolution reaction (2H2O→4H+O2+4e-) is a 4 electron electrochemical reaction process of O-H bond rupture and O-O bond formation, the chemical kinetics of the process is slow, the efficiency is low (the higher overpotential is shown), so the introduction of the catalyst effectively reduces the overpotential and accelerates the reaction process.
The supported noble metal catalyst is an important catalytic material, so that the production cost can be effectively reduced, the excellent catalytic activity is maintained, and the supported noble metal catalyst plays a vital role in industrial production. Research shows that the distribution and the size of the load of the noble metal catalyst on the carrier directly influence the catalytic activity of the noble metal catalyst. For the traditional supported noble metal catalyst, noble metal nano particles are nonuniform in size and different in exposed crystal faces, so that the catalyst has different selectivities to reactants or products, and in the single-atom catalyst, the active site is a noble metal single atom, and the single-atom catalyst has a single structure and can show excellent catalytic activity. On the other hand, the single-atom catalyst has maximum atom utilization rate because noble metal reaches atom dispersion, and has higher economic value compared with the traditional supported nano catalyst. The currently reported monoatomic catalyst is relatively difficult to prepare, the mass fraction of noble metal is more than 0.5%, if the loading of noble metal is increased, the generation of noble metal nano particles in the catalyst is difficult to avoid, and the surface energy of monoatomic or atomic clusters which are combined with a carrier is high, so that migration, agglomeration and sintering are easy at high temperature, and the stability of the catalyst is ensured by forming effective interaction with the carrier. Therefore, it is a great challenge how to prepare noble metal monoatomic catalysts with high content and high stability and apply them to industrial production.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a preparation method of a supported oxygen evolution catalyst with high activity and stability, and solves the problems in the prior art.
The invention is realized by the following technical scheme: a preparation method of a high-activity and stability supported oxygen evolution catalyst comprises the following steps:
1) Preparation of Pt nps@mxene support:
uniformly dispersing single-layer MXene powder in an aqueous solution, adding the aqueous solution into a precursor solution containing Pt noble metal, wherein the mass fraction of the noble metal Pt is 10 wt%, and adding a reducing agent to uniformly reduce the Pt on the nano-sheets of the MXene to obtain a Pt NPs@MXene carrier;
2) Preparation of monoatomic catalysts
The Ir atoms are anchored on the organic ligand, then the Ir atoms are loaded on the first carrier, the solid powder is obtained by freeze drying, and the single-atom catalyst with the noble metal Ir mass percent of 0.5-2wt% is obtained after calcining for 2 hours at 700 ℃ in an inert atmosphere.
As a preferred embodiment, the Pt precursor in step (1) is chloroplatinic acid, platinum tetrachloride, platinum acetylacetonate, and combinations thereof.
As a preferred embodiment, the Ir atoms in the step (2) are complexed with the organic ligand and are immobilized on the organic ligand, so that Ir atoms are prevented from agglomerating to form IrNPs.
As a preferred embodiment, the organic ligand of step (2) is porphyrin or phthalocyanine.
As a preferred embodiment, the monoatomic catalyst takes conductive two-dimensional nano sheets as a carrier, and the Ir noble metal is loaded on the carrier in an atomically dispersed form.
The single-atom catalyst is a supported catalyst, the carrier is a two-dimensional nano-sheet material MXene, and the carrier has excellent conductivity and large specific surface area, preferably MXene Ti 3 C 2 T x The noble metal components are Ir and Pt, the main active part of the noble metal component is Ir, the Pt has conducting and anchoring effects, the mass fraction of the noble metal Pt loaded on the carrier is preferably 10 wt%, and the mass fraction of the Ir is 0.5-2 wt%.
After the technical scheme is adopted, the invention has the beneficial effects that: the problem of agglomeration in the noble metal loading process is solved, and the loading capacity and stability are improved. The preparation method of the catalyst provided by the invention mainly comprises the steps of firstly loading a layer of Pt NPs of 2-3 nm on a carrier MXene to obtain the catalyst Pt NPs@MXene, wherein the main function is to isolate Ir monoatoms and avoid agglomeration of the Ir monoatoms. In addition, ir atoms are anchored on porphyrin or phenanthroline to solve the aggregation of the Ir atoms, and then the Ir atoms and Pt NPs@MXene are loaded and annealed at high temperature to form Ir monoatoms.
Description of the embodiments
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme that: the preparation method of the supported IrSAC@Pt NPs@MXene oxygen evolution catalyst with high activity and stability is characterized by comprising the following steps of:
dipping a single-layer MXene powder carrier into precursor solution of active component Pt with a certain content, wherein the precursor is chloride of noble metal, the weight percentage of the noble metal is 10-20 wt%, and stirring for 2 hours after ultrasonic dispersion;
adding a reducing agent into the solution, stirring, filtering, washing, and freeze-drying;
dispersing organic ligands (porphyrin, phthalocyanine and the like) in a solvent, then adding a precursor of Ir, stirring, adding the obtained product, controlling the mass percentage of Ir to be 0.5-2wt%, and performing freeze drying after ultrasonic dispersion to obtain an Ir-containing intermediate product;
and carrying out high-temperature annealing treatment on the obtained Ir-containing intermediate product to obtain a catalyst IrSAC@Pt NPs@MXene containing Ir single atoms.
As an embodiment of the present invention: example 1
(1) Immersing 50 mg monolayer MXene Ti3C2 powder carrier in 50 mL aqueous solution containing 13.2 mg chloroplatinic acid, dispersing by ultrasonic wave, and stirring for 2 hours;
(2) Adding 6.6 mg sodium citrate and 10 mL formic acid reducer into the system, stirring in a water bath at 30 ℃ for 48 h, filtering, washing with deionized water for 2-3 times, and freeze-drying;
(3) Dispersing 2.0. 2.0 mg organic ligand porphyrin in a proper amount of water, then adding 0.46 mg iridium chloride precursor, stirring at 80 ℃ for 12 h, cooling to room temperature, adding the product obtained in the step (2), controlling the mass percentage of Ir to be 0.5 wt%, performing ultrasonic dispersion uniformly, and then performing freeze drying to obtain an Ir-containing intermediate product;
(4) And carrying out high-temperature annealing treatment on the obtained Ir-containing intermediate product. Under the protection of Ar gas atmosphere, the temperature is kept at 2h at the temperature of 700 ℃ at the heating rate of 2 ℃/min, and the catalyst IrSAC@Pt NPs@MXene-0.5 containing Ir monoatoms is obtained.
Example 2
Repeating step (1) and step (2) in example 1;
dispersing 4.0 mg organic ligand porphyrin in a proper amount of water, then adding 0.92 mg iridium chloride precursor, stirring at 80 ℃ for 12 h, cooling to room temperature, adding the product obtained in the step (2), controlling the mass percentage of Ir to be 1.0wt%, and performing freeze drying after ultrasonic dispersion to obtain an Ir-containing intermediate product;
and carrying out high-temperature annealing treatment on the obtained Ir-containing intermediate product. Under the protection of Ar gas atmosphere, heat preservation is carried out for 1 h at the temperature rising rate of 2 ℃/min to 600 ℃, and the catalyst IrSAC@Pt NPs@MXene-1.0 containing Ir monoatoms is obtained.
Example 3
Repeating step (1) and step (2) in example 1;
dispersing 8.0. 8.0 mg of organic ligand porphyrin in a proper amount of water, then adding 1.84 mg of iridium chloride precursor, stirring at 80 ℃ for 12 h, cooling to room temperature, adding the product obtained in the step (2), controlling the mass percent of Ir to be 2.0wt%, and performing freeze drying after ultrasonic dispersion to obtain an Ir-containing intermediate product;
and carrying out high-temperature annealing treatment on the obtained Ir-containing intermediate product. Under the protection of Ar gas atmosphere, heat preservation is carried out for 1 h at the temperature rising rate of 2 ℃/min to 600 ℃ to obtain the catalyst IrSAC@Pt NPs@MXene-2.0 containing Ir monoatoms.
Example 4
Unlike example 1, the organic ligand porphyrin was replaced with an equivalent amount of phthalocyanine.
Example 5
Unlike example 2, the organic ligand porphyrin was replaced with an equivalent amount of phthalocyanine.
Example 6
Unlike example 3, the organic ligand porphyrin was replaced with an equivalent amount of phthalocyanine.
The test procedure was as follows:
assembling a rotary disk electrode (Rotating Disk Electrode, RDE) for testing, dripping the catalyst ink prepared in the examples and the comparative examples on a working electrode, wherein CV testing conditions are that electrolyte is a 0.5M H2SO4 water solution saturated by N2, the potential range is 0V-1.4V relative to a reversible hydrogen electrode, and the scanning speed is 100mV/s; the oxygen evolution test condition is that the electrolyte is O2 saturated 0.5M H2SO4 water solution, the potential range of the reversible hydrogen electrode is 1.2V-1.8V, and the scanning speed is 5 mV/s.
The RDE test results are shown in table 1:
| numbering device | Overpotential (mV) @10 (mA/cm 2) | Mass activity (mA/mgIr) @1.51V | Stability (retention after 3K cycles) |
| Example 1 | 286 | 843 | 91.5% |
| Example 2 | 265 | 862 | 95.2% |
| Example 3 | 251 | 796 | 98.7% |
| Example 4 | 291 | 815 | 90.2% |
| Example 5 | 272 | 835 | 94.3% |
| Example 6 | 258 | 775 | 98.1% |
| Comparative example 1 | 311 | 408 | 78.8% |
| Comparative example 2 | 302 | 513 | 83.6% |
As can be seen from Table 1, the catalysts of examples 1 to 6 have higher electrochemical activity area, higher mass activity and higher stability than those of comparative examples 1 to 2, which means that the catalysts of examples 1 to 6 have more stable nanoparticles and more regular arrangement, and thus have better catalytic activity and stability.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The preparation method of the supported oxygen evolution catalyst with high activity and stability is characterized by comprising the following steps of:
1) Preparation of Pt nps@mxene support:
uniformly dispersing single-layer MXene powder in an aqueous solution, adding the aqueous solution into a precursor solution containing noble metal Pt, wherein the mass fraction of the noble metal Pt is 10 wt%, and adding a reducing agent to uniformly reduce the Pt on the nano-sheets of the MXene to obtain a Pt NPs@MXene carrier;
2) Preparation of monoatomic catalysts
Dispersing organic ligand porphyrin or phthalocyanine in a proper amount of water, then adding an Ir precursor, stirring, adding the product obtained in the step 1), performing ultrasonic dispersion uniformly, and then performing freeze drying to obtain solid powder, and calcining at 700 ℃ for 2 hours in an inert atmosphere to obtain the monoatomic catalyst with the noble metal Ir mass percent of 0.5-2 wt%.
2. The method for preparing the high-activity and stability supported oxygen evolution catalyst according to claim 1, which is characterized in that: the precursor containing the noble metal Pt in the step 1) is chloroplatinic acid, platinum tetrachloride, platinum acetylacetonate and a combination thereof.
3. The method for preparing the high-activity and stability supported oxygen evolution catalyst according to claim 1, which is characterized in that: the Ir atoms in the step 2) are complexed with the organic ligand and are fixed on the organic ligand, so that Ir atoms are prevented from agglomerating to form Ir NPs.
4. The method for preparing the high-activity and stability supported oxygen evolution catalyst according to claim 1, which is characterized in that: the single-atom catalyst takes a conductive two-dimensional nano sheet as a carrier, and noble metal Ir is loaded on the carrier in an atomic-scale dispersion mode.
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| CN110404532A (en) * | 2019-09-02 | 2019-11-05 | 北京邮电大学 | A kind of method that wet-chemical polishing prepares noble metal cluster or monatomic catalyst |
| CN110665546A (en) * | 2019-09-03 | 2020-01-10 | 北京氦舶科技有限责任公司 | Noble metal/amino MOFs selective hydrogenation catalyst, preparation method and application thereof |
| CN111545229A (en) * | 2020-04-20 | 2020-08-18 | 北京邮电大学 | Method for preparing MXene supported noble metal catalyst by ultrasonic-assisted method |
| CN112264062A (en) * | 2020-10-28 | 2021-01-26 | 兰州交通大学 | Preparation and application of monatomic platinum catalyst based on MXene quantum dots |
| US10967363B1 (en) * | 2017-10-16 | 2021-04-06 | Iowa State University Research Foundation, Inc. | Two-dimensional metal carbide catalyst |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10967363B1 (en) * | 2017-10-16 | 2021-04-06 | Iowa State University Research Foundation, Inc. | Two-dimensional metal carbide catalyst |
| CN110404532A (en) * | 2019-09-02 | 2019-11-05 | 北京邮电大学 | A kind of method that wet-chemical polishing prepares noble metal cluster or monatomic catalyst |
| CN110665546A (en) * | 2019-09-03 | 2020-01-10 | 北京氦舶科技有限责任公司 | Noble metal/amino MOFs selective hydrogenation catalyst, preparation method and application thereof |
| CN111545229A (en) * | 2020-04-20 | 2020-08-18 | 北京邮电大学 | Method for preparing MXene supported noble metal catalyst by ultrasonic-assisted method |
| CN112264062A (en) * | 2020-10-28 | 2021-01-26 | 兰州交通大学 | Preparation and application of monatomic platinum catalyst based on MXene quantum dots |
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