CN116765414B - Osmium metal alkene material, preparation method and application thereof - Google Patents
Osmium metal alkene material, preparation method and application thereof Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title claims abstract description 71
- 229910052762 osmium Inorganic materials 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 63
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 150000001336 alkenes Chemical class 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 238000004729 solvothermal method Methods 0.000 claims description 13
- VUBLMKVEIPBYME-UHFFFAOYSA-N carbon monoxide;osmium Chemical group [Os].[Os].[Os].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] VUBLMKVEIPBYME-UHFFFAOYSA-N 0.000 claims description 12
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052697 platinum Inorganic materials 0.000 abstract description 10
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002135 nanosheet Substances 0.000 abstract description 5
- 239000012670 alkaline solution Substances 0.000 abstract description 2
- 239000003929 acidic solution Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 8
- DSVGQVZAZSZEEX-UHFFFAOYSA-N [C].[Pt] Chemical compound [C].[Pt] DSVGQVZAZSZEEX-UHFFFAOYSA-N 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 238000005119 centrifugation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 229910021397 glassy carbon Inorganic materials 0.000 description 2
- -1 platinum group metals Chemical class 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007709 nanocrystallization Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007614 solvation 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
- 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
- C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
- C25B11/081—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the element being a noble metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- 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
-
- 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
Abstract
The invention discloses an osmium metal alkene material, a preparation method and application thereof. The prepared osmium metal alkene material has a two-dimensional nano-sheet structure with atomic-scale thickness, unique surface interface effect, rich unsaturated bonds and ultrahigh atomic utilization rate, and can provide a large number of metal osmium catalytic active sites. When the osmium metal alkene catalyst is used as a catalyst in hydrogen production by water electrolysis, the catalyst has excellent electrocatalytic hydrogen evolution performance in both an acidic solution and an alkaline solution, and the preparation cost of the osmium metal alkene material is far lower than that of a commercial platinum-based material, so that the catalyst is expected to be a substitute material of the commercial platinum-based material, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of electrochemical catalysis, and particularly relates to an osmium metal alkene material, a preparation method and application thereof.
Background
Hydrogen is a carrier of clean energy, and the whole process of clean and pollution-free can be realized by utilizing renewable energy to derive electric power to electrolyze water for hydrogen production. Theoretically, only 1.23V is needed to drive the electrolytic water to produce hydrogen, but the actual working voltage is often more than 1.8V. This is due to the large overpotential required for both the cathodic hydrogen evolution reaction and the anodic oxygen evolution reaction to overcome the slow kinetics. In order to reduce the reaction overpotential and save costs, efficient and inexpensive catalysts are needed. The most efficient hydrogen evolution catalyst is platinum-based material at present, but platinum is expensive and has low reserves, so that the large-scale application of the catalyst is limited, and therefore, the development of the hydrogen evolution catalyst with platinum-like catalytic activity and relatively low price is urgently needed.
As a member of the platinum group metals, osmium is only 40% of platinum, and its active site has a binding strength similar to that of platinum, and is one of ideal hydrogen evolution catalysts expected to replace platinum. In recent years, an ultrathin two-dimensional metal nanomaterial has been paid attention to widely by researchers, and the ultrathin two-dimensional metal nanomaterial is also called a metallocenes material because the atomic-scale two-dimensional nanostructure has a structural feature similar to graphene. The metal alkene material has a two-dimensional nano sheet structure with atomic-level thickness, has unique surface interface effect, rich unsaturated bonds and ultrahigh atomic utilization rate, can provide a large number of metal catalytic active sites, can realize the full utilization of metal atoms in the electrocatalytic process, and achieves the purposes of improving electrocatalytic performance and reducing cost. At present, various noble metal alkene materials including platinum, ruthenium, rhodium, iridium and the like have been successfully designed and synthesized, and are applied to various energy sources and catalysis fields, and excellent performances are shown. Osmium metal alkene materials and their use have not been reported.
Disclosure of Invention
In view of the problems associated with the prior art, it is an object of the present invention to provide an osmium metal alkene material, a method of preparation, and uses thereof. The osmium metal alkene material preparation method has the advantages of simple process, low cost and high utilization rate of catalytic active sites, and shows excellent electrocatalytic hydrogen evolution performance when being used as a catalyst for hydrogen production by water electrolysis.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, the present invention provides a process for the preparation of an osmium metal olefin material from osmium dodecacarbonyl tri-osmium and acetic acid by solvothermal reaction in the presence of an organic solvent to produce an osmium metal olefin material; the method specifically comprises the following steps:
adding the osmium dodecacarbonyl and the organic solvent into a reaction kettle, then adding acetic acid, and carrying out solvothermal reaction to obtain the osmium metal alkene material.
Preferably, the dosage ratio of the osmium dodecacarbonyl, the organic solvent and the acetic acid is 5-20 mg: 5-20 mL: 1-5 mL; further preferably 10 to 15mg: 10-12 mL: 2-4 mL.
Preferably, the organic solvent is one or a combination of more than two of N, N-dimethylformamide, ethanol, acetonitrile, acetone, ethyl acetate, isopropanol, tetrahydrofuran, propanol and N-propanol.
Preferably, the temperature of the solvothermal reaction is 30-80 ℃; more preferably, the temperature is 40 to 60 ℃.
Preferably, the solvothermal reaction time is 1 to 5 hours, more preferably 2 to 4 hours.
In a second aspect, the invention provides an osmium metal alkene material obtained by the above-described method of preparation.
In a third aspect the present invention provides the use of an osmium metal olefin material as described above as a catalyst in the production of hydrogen by electrolysis of water.
The invention has the following beneficial effects:
(1) The osmium metal alkene material is prepared by taking the osmium dodecacarbonyl and the acetic acid as raw materials and adopting one-step solvation reaction, and the preparation method has the characteristics of simple process, controllable conditions, good repeatability, high yield and the like.
(2) The osmium metal alkene material prepared by the method has a two-dimensional nano sheet structure with unique atomic-level thickness, has unique surface interface effect, rich unsaturated bonds and ultrahigh atomic utilization rate, can provide rich metal catalytic active sites, and has high metal atom utilization rate. When the osmium metal alkene material of the invention is used as a catalyst in hydrogen production by water electrolysis, experimental results show that the catalyst is in a range of 0.5. 0.5M H 2 SO 4 The generation of 10mA.cm in solution -2 The hydrogen evolution catalytic current density of (2) the osmium metal alkene material requires only 9mV overpotential, which is significantly lower than that of commercial platinum carbon catalysts (24 mV); in 1M KOH solution to generate 10mA cm -2 The hydrogen evolution catalytic current densities of osmium metal alkene and commercial platinum carbon catalysts require 21mV and 32mV overpotential, respectively, indicating that the osmium metal alkene materials of the present invention are in either acidic or basic solutionsAll exhibit excellent electrocatalytic hydrogen evolution activity. In addition, the preparation cost of the osmium metal alkene material is far lower than that of commercial platinum-based materials, and the osmium metal alkene material is hopeful to become a substitute material of the commercial platinum-based materials and has good application prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an XRD pattern for the osmium metal alkene material produced in example 1;
FIG. 2 is an SEM image of an osmium metal alkene material prepared according to example 1;
FIG. 3 is a schematic illustration of the osmium metal olefin material of example 1 as a catalyst in 0.5M H when used in the production of hydrogen from electrolysis of water 2 SO 4 LSV profile in solution;
FIG. 4 is a graph of LSV in 1M KOH solution when the osmium metal olefin material of example 1 is used as a catalyst in the production of hydrogen from electrolysis of water.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
Example 1
A method for preparing osmium metal alkene material, comprising the steps of:
10mg of osmium dodecacarbonyl and 10mL of N, N-dimethylformamide are added into a reaction kettle, then 2mL of acetic acid is added, stirring and mixing are carried out uniformly, the reaction kettle is sealed and subjected to solvothermal reaction at 60 ℃ for 2h, after the reaction is finished, centrifugation and ethanol cleaning are carried out for 6 times, and the mixture is placed in an oven and dried in vacuum at 50 ℃ to obtain osmium metal alkene material with the yield of 85.6%.
The osmium metal alkene materials prepared in this example were subjected to X-ray diffraction characterization to obtain the XRD patterns of the osmium metal alkene materials, as shown in fig. 1. As can be seen from the results of FIG. 1, the diffraction peaks of the osmium metal alkene materials prepared in this example correspond to the XRD standard card for metal osmium (JCPDS No. 06-0662), the surface product is pure phase metal osmium, and a broader XRD diffraction peak of the osmium metal alkene materials prepared is observed, due to the nanocrystallization of the osmium metal structure.
The osmium metal alkene materials prepared in this example were characterized in morphology to give SEM images of the osmium metal alkene materials, as shown in fig. 2.
As can be seen from the results of fig. 2, the osmium metal alkene material prepared in this example has a two-dimensional nano-sheet structure in morphology, because during the solvothermal reaction, osmium dodecacarbonyl and acetic acid react to decompose a large amount of CO, and reduce osmium ions to metal osmium, and CO acts as a structure directing agent to adsorb on the (111) crystal face of osmium, inducing anisotropic growth thereof and finally forming an ultrathin two-dimensional nano-sheet structure. The above characterization shows that osmium metal alkene materials have been successfully prepared.
Example 2
A method for preparing osmium metal alkene material, comprising the steps of:
20mg of osmium dodecacarbonyl and 20mL of N, N-dimethylformamide are added into a reaction kettle, then 5mL of acetic acid is added, stirring and mixing are carried out uniformly, the reaction kettle is sealed and subjected to solvothermal reaction at 40 ℃ for 4 hours, after the reaction is finished, centrifugation and ethanol cleaning are carried out, and the mixture is placed into an oven for vacuum drying at 50 ℃ to obtain osmium metal alkene material with the yield of 88.2%.
Example 3
10mg of osmium dodecacarbonyl and 5mL of N, N-dimethylformamide are added into a reaction kettle, then 2mL of acetic acid is added, stirring and mixing are carried out uniformly, the reaction kettle is sealed and subjected to solvothermal reaction at 60 ℃ for 5 hours, after the reaction is finished, centrifugation and ethanol cleaning are carried out, and the mixture is placed into an oven for vacuum drying at 50 ℃ to obtain osmium metal alkene material with the yield of 82.5%.
Example 4
5mg of osmium dodecacarbonyl and 12mL of N, N-dimethylformamide are added into a reaction kettle, then 1mL of acetic acid is added, stirring and mixing are carried out uniformly, the reaction kettle is sealed and subjected to solvothermal reaction at 80 ℃ for 4 hours, after the reaction is finished, centrifugation and ethanol cleaning are carried out, and the mixture is placed into an oven for vacuum drying at 50 ℃ to obtain osmium metal alkene material with the yield of 84.9%.
Example 5
8mg of osmium dodecacarbonyl and 10mL of ethanol are added into a reaction kettle, then 4mL of acetic acid is added, stirring and mixing are carried out, the reaction kettle is sealed and subjected to solvothermal reaction at 30 ℃ for 3 hours, after the reaction is finished, the reaction kettle is centrifuged, cleaned by the ethanol, and then placed into an oven for vacuum drying at 60 ℃ to obtain osmium metal alkene material, and the yield is 75.7%.
Experimental example 1
The osmium metal alkene material prepared in example 1 was used as a catalyst in the production of hydrogen by electrolysis of water, and the specific steps are as follows:
preparing a working electrode: 4mg osmium metal alkene and 80 μl of 5wt% nafion solution were dispersed in 1mL deionized water/ethanol mixed solution (v/v=4/1) to form a uniform catalyst suspension; dropping 5 mu L suspension liquid on the surface of a glassy carbon electrode (with the diameter of 3 mm), airing at room temperature, and preparing the electrocatalyst with the load of about 0.265mg cm -2 Is provided. The same procedure was used to prepare commercial platinum carbon catalyst electrodes with the same loading.
The electrocatalytic hydrogen evolution performance test of the catalyst is carried out in a standard three-electrode cell, a glassy carbon electrode loaded with the catalyst is used as a working electrode, a carbon rod is used as a counter electrode, a saturated calomel electrode is used as a reference electrode, and the two electrodes are respectively saturated with 0.5. 0.5M H of nitrogen 2 SO 4 And performing an electrocatalytic hydrogen evolution performance (LSV) test in a 1M KOH solution, the LSV test having a scan rate of 2 mV.s -1 The experimental test temperature was 22.+ -. 2 ℃. The specific results are shown in fig. 3 and 4.
As can be seen from the results of FIG. 3, the osmium metal olefin material of the present invention has a higher electrocatalytic hydrogen evolution activity than commercial platinum carbon catalysts, yielding 10mA cm -2 The hydrogen evolution catalytic current density of osmium metal alkene materials requires only 9mV overpotential, which is significantly lower than commercial platinum carbon catalysts (24 mV).
As is clear from the results of FIG. 4, 10mA cm was produced -2 Hydrogen evolution catalytic current density of osmium metal alkene of the inventionAnd commercial platinum carbon catalysts require overpotential of 21mV and 32mV, respectively, indicating that the osmium metal alkene materials of the present invention also have higher electrocatalytic hydrogen evolution activity in alkaline solutions. In addition, potentiostatic electrolytic test results showed that the osmium metal alkene material was at 0.5MH 2 SO 4 And 1M KOH solution, has good electrocatalytic stability.
The results show that the osmium metal alkene material provided by the invention has excellent electrocatalytic hydrogen evolution activity and electrocatalytic stability, and compared with a commercial platinum-carbon catalyst, the osmium metal alkene material provided by the invention has lower price cost and extremely high metal atom utilization rate, so that the osmium metal alkene material can be used as a hydrogen evolution catalyst with excellent performance in hydrogen production by water electrolysis.
The present invention is not limited to the above-described specific embodiments, and various modifications may be made by those skilled in the art without inventive effort from the above-described concepts, and are within the scope of the present invention.
Claims (4)
1. A method for preparing an osmium metal alkene material comprising the steps of: adding osmium dodecacarbonyl and an organic solvent into a reaction kettle, then adding acetic acid, and performing solvothermal reaction to obtain an osmium metal alkene material;
the dosage ratio of the osmium dodecacarbonyl, the organic solvent and the acetic acid is 5-20 mg: 5-20 mL: 1-5 mL;
the temperature of the solvothermal reaction is 30-80 ℃, and the time of the solvothermal reaction is 1-5 h.
2. The method for producing an osmium-metal olefin material according to claim 1, wherein the organic solvent is one or a combination of two or more of N, N-dimethylformamide, ethanol, acetonitrile, acetone, ethyl acetate, isopropyl alcohol, tetrahydrofuran, propanol, and N-propanol.
3. An osmium-metal alkene material produced according to the production process of claim 1 or 2.
4. Use of an osmium metal alkene material as in claim 3 as a catalyst in the production of hydrogen by electrolysis of water.
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| CN113750990A (en) * | 2020-06-06 | 2021-12-07 | 重庆工商大学 | Preparation method and application of rhodium-based electro-catalytic material |
| CN112337455A (en) * | 2020-11-11 | 2021-02-09 | 深圳大学 | Preparation method of noble metal loaded two-dimensional nanosheet photocatalyst |
| CN115404508A (en) * | 2022-08-26 | 2022-11-29 | 江苏理工学院 | Monoatomic supported Os-WO 2.72 Electrocatalytic material, preparation method and application thereof |
| CN115591545A (en) * | 2022-09-28 | 2023-01-13 | 西安交通大学（Cn） | Preparation method and catalytic application of osmium-based solid solution material |
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