CN110114918A - Core shell nanoparticles catalyst - Google Patents

Core shell nanoparticles catalyst Download PDF

Info

Publication number
CN110114918A
CN110114918A CN201680091543.6A CN201680091543A CN110114918A CN 110114918 A CN110114918 A CN 110114918A CN 201680091543 A CN201680091543 A CN 201680091543A CN 110114918 A CN110114918 A CN 110114918A
Authority
CN
China
Prior art keywords
core
shell nanoparticles
core shell
platinum
solution
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
Application number
CN201680091543.6A
Other languages
Chinese (zh)
Inventor
邵敏华
常乔婉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hong Kong University of Science and Technology HKUST
Original Assignee
Hong Kong University of Science and Technology HKUST
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hong Kong University of Science and Technology HKUST filed Critical Hong Kong University of Science and Technology HKUST
Publication of CN110114918A publication Critical patent/CN110114918A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H01M4/921—Alloys or mixtures with metallic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
    • H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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
    • Y02E60/50—Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Catalysts (AREA)

Abstract

This application provides core shell nanoparticles and the method for preparing core shell nanoparticles.Core shell nanoparticles include the kernel (1) surrounded by shell (2).Core (1) may include one or more platinums group metal, noble metal, platinum group metal oxide and/or metal oxide containing precious metals.Shell (2) may include platinum or platinum alloy.Platinum alloy can be the mixture of platinum and transition metal.Core (1) can be ruthenium-oxide, and shell (2) can be palladium-nickel alloy.Carbon carrier can be included the carrier to serve as core shell nanoparticles.

Description

Core shell nanoparticles catalyst
Background technique
Cathodic oxygen reduction (ORR) dynamic process in Proton Exchange Membrane Fuel Cells (PEMFCs) is extremely slow, Which has limited its commercialized developments.In order to reduce the cost of fuel cell, develop better than current platinum (Pt)/C high activity ORR Catalyst is extremely urgent.
Summary of the invention
The embodiment of the present invention is by introducing Novel oxygen reduction catalyst and preparing this oxygen reduction reaction catalysis The method of agent improves the prior art.
The embodiment of the present invention includes core shell nanoparticles and the method for preparing this core shell nanoparticles.More specifically, this The embodiment of invention is related to can be used for making the core shell nanoparticles catalyst in oxygen reduction reaction.In section Example of the invention Core shell nanoparticles can be used for the cathode reaction of fuel cell.
In many embodiments, core shell nanoparticles include the kernel surrounded by shell.Shell can be used as oxygen reduction reaction In catalyst.Core in core shell nanoparticles may include platinum group metal, noble metal, platinum group metal oxide and Precious metal oxidation One of object is a variety of.Shell can be platinum or platinum alloy.Platinum alloy is preferably the alloy of platinum and transition metal.It is specific at one In example, core is ruthenium-oxide, and shell is platinum-nickel alloy.Catalyst may also include carbon to serve as the carrier of core shell nanoparticles.
According to an embodiment of the invention, the method for preparing core shell nanoparticles may include in one or more first solvents One or more platinums group metal, noble metal, platinum group metal oxide and metal oxide containing precious metals are mixed to form the first solution；Oxidation First solution；Heat the first solution；It abandons the first supernatant and obtains the first core product；By platinum presoma, alloy presoma and First core product is mixed in one or more second solvents to form the second solution；It heats and mixes the second solution；Cooling second Solution simultaneously adds a kind of third solvent to precipitate core shell nanoparticles；And the second supernatant is isolated from core shell nanoparticles Liquid.
This method, which may further include, is added to carbon carrier to form the 4th solution in one or more 4th solvents, And the 4th solution is ultrasonically treated；Core shell nanoparticles are added in the 4th solution to be formed at the 5th solution and ultrasound This solution is managed to form the nucleocapsid catalyst of carbon load；And it abandons third supernatant and obtains nuclear shell on carbon nano particle.It is used Solvent and additive may include such as oleyl amine, benzyl oxide, oleic acid, toluene and alcohol (such as ethyl alcohol).
Detailed description of the invention
Fig. 1 is the schematic diagram of core shell nanoparticles according to an embodiment of the invention.
Specific embodiment
The method that the embodiment of the present invention is related to core shell nanoparticles and prepares core shell nanoparticles.Core shell nanoparticles can As the catalyst in oxygen reduction reaction.Specifically, core shell nanoparticles can be used for the cathode reaction of fuel cell.
Studies have shown that by with transition metal (Fe, Co, Ni, Cu etc.) alloying, the oxygen reduction reaction of platinum can be improved (ORR) active.In addition, also height depends on high preferred orientation (or crystal face) to the activity of platinum alloy, than so reacting preferably { 111 } Face.Catalysis reaction occurs on the outer surface of Pt nanoparticle, and therefore, most of pt atom not on the surface is simultaneously not involved in it Catalysis reaction.Since platinum is a kind of material of valuableness, this has resulted in economic loss.
The embodiment of the present invention combines three kinds of strategies that platinum mass activity can be improved.Firstly, it includes platinum and transition gold Belong to the alloy surface such as nickel.Secondly, the crystal plane structure of core shell nanoparticles can be optimized by pattern control.Third, can be with Platinum is replaced inside nanocatalyst (or nano particle) core with cheaper material (such as ruthenium-based material).These three strategies are real High pt utilization and high ORR reactivity are showed.In practice, compared with the platinum catalyst of related fields, reality of the invention The platinum mass activity for applying core shell nanoparticles in example has been carried out the raising of six to eight times or more.In addition, because in core Platinum can alloy (for example, nickel) be can be used to reduce platinum dosage in other metals (such as ruthenium) substitution and shell, catalyst Cost can be significantly reduced.
Fig. 1 is the schematic diagram of core shell nanoparticles according to an embodiment of the invention.Referring to Fig.1, core-shell nano Grain may include the kernel 1 surrounded by shell 2, and the shell 2 of covering kernel 1.Core 1 can for platinum group metal (i.e. Ru, Rh, Pd, Os, Ir, Pt), noble metal (i.e. Ru, Rh, Pd, Os, Ir, Pt, Cu, Ag, Re, Au), platinum group metal oxide and noble metal oxygen Compound.Shell 2 may include platinum and one or more platinum alloy.Platinum alloy may include one or more transition metal (for example, Ni, Co, Fe, Cr, V, Mn, Cu, Zn, Ti, Zr, Y, W or Ta).In a particular embodiment, core 1 can be ruthenium or ruthenium-oxide, and shell 2 can be Palladium-nickel alloy.The result shows that use metal oxide that can reduce as core (for example, ruthenium-oxide) deposits platinum and platinum conjunction on core Gold is to form the difficulty of shell 2.In addition, metal oxidation core shown in catalytic process and fuel cell operation it is highly stable Property.
Using preparation method described herein, core shell nanoparticles crystal face can have { 111 } face, also, core-shell nano Most of crystal face of particle can be { 111 } face.In one embodiment, core shell nanoparticles can be supported on carbon or other types Carrier on be used as final product.
In one embodiment, the method for preparing core shell nanoparticles may include mixing one or more platinums group metal (i.e. Ru, Rh, Pd, Os, Ir and Pt), noble metal (i.e. Ru, Rh, Pd, Os, Ir, Pt, Cu, Ag, Re and Au), platinum group metal object and your gold Belong to oxide and forms the first solution in one or more first solvents.Then the first solution is aoxidized and heated, supernatant is abandoned To obtain the first core product.
It is molten to form second that platinum presoma, alloy presoma and the first core product are mixed in one or more second solvents Liquid.Then the second solution is heated and mixed, after cooling, one or more third solvents can be used and additive removes precipitating nucleocapsid Nano particle.Hereafter, the second supernatant and core shell nanoparticles are separated.
Carbon carrier can be added in other 4th solvent to form the 4th solution.It is ultrasonically treated the 4th solution, and by core Core-shell nanoparticles are added in the 4th solution to form the 5th solution, and the 5th solution of ultrasonic treatment is loaded again with forming carbon later Core shell nanoparticles.Hereafter supernatant is abandoned, the core shell nanoparticles of carbon load are obtained.
In the whole process, different solvent and/or additive can be used.Workable solvent and additive include One or more oleyl amines, benzyl oxide, oleic acid, toluene and alcohol (for example, ethyl alcohol).
The present invention includes but is not limited to following exemplary embodiment.
Embodiment 1, multiple core shell nanoparticles, each core shell nanoparticles include:
Core；With
Shell.
Embodiment 2, in the core shell nanoparticles of embodiment 1, core is ruthenium core, and shell is platinum shell or platinum alloy shell.
Embodiment 3, the core shell nanoparticles of any one of embodiment 1-2, center is ruthenium-oxide core, and shell is platinum shell Or platinum alloy shell (for example, platinum-nickel alloy shell).
Embodiment 4, the core shell nanoparticles of any one of embodiment 1-3, wherein shell includes to have one or more transition The alloy of metal (for example, Ni, Co, Fe, Cr, V, Mn, Cu, Zn, Ti, Zr, Y, W or Ta).
Embodiment 5, the core shell nanoparticles of any one of embodiment 1-4, center include platinum group metal (i.e. Ru, Rh, Pd, Os, Ir, Pt), noble metal (i.e. Ru, Rh, Pd, Os, Ir, Pt, Cu, Ag, Re, Au), platinum group metal oxide and noble metal oxygen One of compound is a variety of.
Embodiment 6, the core shell nanoparticles of any one of embodiment 1-5, wherein core shell nanoparticles are supported on carbon carrier On.
Embodiment 7, the core shell nanoparticles of any one of embodiment 1-6, wherein core shell nanoparticles have multiple { 111 } Crystal face.
Embodiment 8, the core shell nanoparticles in embodiment 7, wherein most of crystal face is { 111 } on core shell nanoparticles Face.
Embodiment 9, the core shell nanoparticles in embodiment 7, wherein all crystal faces on core shell nanoparticles are { 111 } Face.
Embodiment 10, the method for any one of embodiment 1-9, wherein the core shell nanoparticles include platinum-cobalt or platinum- The platinum alloy shell of iron or palladium-nickel-cobalt or palladium-nickel-chromium or platinum-cobalt-chromium or the above alloy any combination.
Embodiment 101, a method of preparing core shell nanoparticles, which comprises
By one or more metals (such as platinum group metal, noble metal, platinum group metal oxide and/or metal oxide containing precious metals) The first solution is mixed to form in one or more first solvents；
Aoxidize the first solution；
It heats the first solution and discards the first supernatant to obtain the first core product；
By platinum presoma, it is molten that alloy presoma and the first core product with one or more second solvents are mixed to form second Liquid；
It heats and mixes the second solution；
Cooling second solution simultaneously adds a kind of third solvent to precipitate core shell nanoparticles；With
Separate the second supernatant and core shell nanoparticles.
Embodiment 102, the method for embodiment 101, further includes:
Carbon carrier is added into one or more 4th solvents to form the 4th solution and be ultrasonically treated the 4th solution；
Core shell nanoparticles are added in the 4th solution to form the 5th solution and be ultrasonically treated the 5th solution to be formed Nuclear shell on carbon catalyst；With
It abandons third supernatant and obtains nuclear shell on carbon nano particle.
Embodiment 103, the method for any one of embodiment 101-102, wherein the first solvent includes oleyl amine.
Embodiment 104, the method for any one of embodiment 101-103, wherein the second solvent includes benzylic ether, oleyl amine and oil One of acid is a variety of.
Embodiment 105, the method for any one of embodiment 101-104, wherein third solvent includes toluene and alcohol (such as second Alcohol) one of or it is a variety of.
Embodiment 106, the method for any one of embodiment 101-105, wherein the 4th solvent includes toluene.
Embodiment 107, the method for any one of embodiment 101-106, wherein platinum group metal includes Ru, Rh, Pd, Os, Ir And Pt, noble metal include Ru, Rh, Pd, Os, Ir, Pt, Cu, Ag, Re and Au.
Embodiment 108, the method for any one of embodiment 101-107, wherein alloy presoma includes Ni, Co, Fe, Cr, One of V, Mn, Cu, Zn, Ti, Zr, Y, W and Ta or a variety of.
Embodiment 109, the method for any one of embodiment 101-108, wherein core shell nanoparticles include ruthenium-oxide core and Platinum alloy shell.
Embodiment 110, the method for any one of embodiment 101-109, wherein core shell nanoparticles are prepared as having crystalline substance Face.
Embodiment 111, the method for embodiment 110, plurality of crystal face are { 111 }.
Embodiment 112, the method for embodiment 110, wherein most crystal face are { 111 }.
Embodiment 113, the method for embodiment 110, wherein all crystal faces are { 111 }.
Embodiment 114, the method for any one of embodiment 101-113, wherein the core shell nanoparticles include platinum-cobalt, Or the platinum alloy shell of any combination of platinum-iron or palladium-nickel-cobalt or palladium-nickel-chromium or platinum-cobalt-chromium or alloy above.
Embodiment 201, a method of preparing core shell nanoparticles, which comprises
It is formed by one or more metals (such as platinum group metal, noble metal, platinum group metal oxide and/or noble metal oxygen Compound) made of core；With
Shell is formed around the core, wherein the shell includes platinum alloy, that is, it include platinum and one or more transition metal.
Embodiment 202, the method for embodiment 201, center are ruthenium-oxide.
Embodiment 203, the method for any one of embodiment 201-202, wherein shell is palladium-nickel alloy.
Embodiment 204, the method for any one of embodiment 201-203, wherein the core shell nanoparticles synthesized have crystal face.
Embodiment 205, the method for embodiment 204, plurality of crystal face are { 111 }.
Embodiment 206, the method for embodiment 204, wherein most crystal face are { 111 }.
Embodiment 207, the method for embodiment 204, wherein all crystal faces are { 111 }.
Present invention and its advantages may be better understood from following exemplary embodiment.Following instance only illustrates this hair Bright Part Methods, application, embodiment and variable of the invention.Certainly, this is not regarded as limiting of the invention, the present invention Repeatedly it can be modified and be changed.
Embodiment 1
Prepare the core shell nanoparticles with ruthenium-oxide core, platinum alloy shell and { 111 } crystal face.Steps are as follows.
By 104 (104) milligram ruthenic chloride (RuCl3) He Ershi (20) milliliter oleyl amine is mixed and heated in beaker To 350 DEG C, temperature one (1) hour is kept in argon atmosphere.After synthesizing ruthenium nano-particle, by oxygen (O2) be passed through in beaker 3 hours.After mixture sedimentation overnight, liquid is discarded supernatant, the nano particle (or semi-conducting materia) of ruthenium-oxide is recycled.
20 (20) milligram acetylacetone,2,4-pentanedione platinum (II) (Pt (acac)2), ten (10) milligram nickel acetylacetonate (II) (Ni (acac)2), (1) milligram ruthenium-oxide semi-conducting materia, seven (7.0) milliliter benzylic ethers, two (2.0) milliliter oleyl amines and (1.0) milliliter Oleic acid mixes in flask.Flask is placed in heating mantle and connect with condenser, is gently mixed solution in bottle with magnetic stirring apparatus, together When thermocouple measuring temperature, and argon gas is passed through into system.
130 DEG C are heated the mixture to, and 60 (60) mg tungsten carbonyl W (CO) are added6.Heat flask to 200 DEG C simultaneously Maintained for 40 (40) minutes.Then mixture is cooled to room temperature, five (5) ml toluene and 15 (15) ml is added into mixture Core shell nanoparticles are precipitated out by ethyl alcohol from solution.
Mixture is placed in 50 (50) ml centrifuge tubes and ten (10) minutes were centrifuged with 3000rpm, keeps nano particle heavy Drop.Then supernatant and nano-particle product are separated and abandons supernatant.
12 (12) mg carbon blacks and 10-15ml toluene are mixed in 50ml vial.It is ultrasonically treated inside vial Solution ten (10) minute.Then previously synthesized nano-particle product is added in carbon/toluene solution and is ultrasonically treated about three (3) hour.The mixture is placed in later in 50 clean (50) ml centrifuge tubes and was centrifuged for 15 (15) minutes.Then it discards Supernatant is dried ruthenium core nano particle 3 hours in an oven, obtains final product.
It should be appreciated that embodiment described herein being for illustration purposes only with embodiment, and those skilled in the art It can suggest that it is carry out various modifications or is changed, and including in spirit and scope.
All patents for referring to or quoting in this specification, patent application, provisional application and publication are (including " with reference to text Offer " publication in a section), while including all charts, it is integrally incorporated herein by reference, reaches itself and specification Disclosure does not have inconsistent degree.
Bibliography
1.Methods of preparing electrocatalysts for fuel cells in core-shell structure and electrocatalysts,Seung Jun HWANG,et al.,US8859458 B2
2.Core-shell structured electrocatalysts for fuel cells and production method thereof,Seung Jun HWANG,et al.,US20130059231 A1
3.Platinum-coated non-noble metal-noble metal core-shell electrocatalysts,Radoslav Adzic,et al.,US9005331 B2
4.Core/shell-type catalyst particles and methods for their preparation,Marco Lopez,et al.,US8691717 B2
5.Core/shell-type catalyst particles comprising metal or ceramic core materials and methods for their preparation,Marco Lopez,et al.,WO2008025751 A1
6.Core/shell nanoparticle synthesis and catalytic method,Shouheng Sun,et al.,WO2011149912 A1
7.Core-shell type nanoparticles comprising metal cores and crystalline shells of metal oxide or metalloid oxide,Sang Ho Kim,et al., US7820291 B2
8.Shape controlled core-shell catalysts,Minhua Shao,WO2012144974 A1.
9.Adzic,R.R.；Zhang,J.；Sasaki,K.；Vukmirovic,M.B.；Shao,M.；Wang,J.X.； Nilekar,A.U.；Mavrikakis,M.；Valerio,J.A.；Uribe,F.Top.Catal.2007,46(3-4),249- 262.
10.Wang,C.；van der Vliet,D.；More,K.L.；Zaluzec,N.J.；Peng,S.；Sun,S.； Daimon,H.；Wang,G.；Greeley,J.；Pearson,J.；Paulikas,A.P.；Karapetrov,G.；Strmcnik, D.；Markovic,N.M.；Stamenkovic,V.R.Nano Lett.2010,11(3),919-926.
11.Mazumder,V.；Chi,M.；More,K.L.；Sun,S.J.Am.Chem.Soc.2010,132(23), 7848-784.
12.Hsieh,Y.-C.；Zhang,Y.；Su,D.；Volkov,V.；Si,R.；Wu,L.；Zhu,Y.；An,W.；Liu, P.；He,P.；Ye,S.；Adzic,R.R.；Wang,J.X.Nat Commun 2013,4.
13.Yang,L.；Vukmirovic,M.B.；Su,D.；Sasaki,K.；Herron,J.A.；Mavrikakis,M.； Liao,S.；Adzic,R.R.J.Phys.Chem.C 2013,117(4),1748-1753.
14.Choi,S.-I.；Shao,M.；Lu,N.；Ruditskiy,A.；Peng,H.-C.；Park,J.；Guerrero, S.；Wang,J.；Kim,M.J.；Xia,Y.ACS Nano 2014,8(10),10363-10371.
15.Zhao,X.；Chen,S.；Fang,Z.；Ding,J.；Sang,W.；Wang,Y.；Zhao,J.；Peng,Z.； Zeng,J.J.Am.Chem.Soc.2015,137(8),2804-2807.

Claims (24)

1. a kind of core shell nanoparticles, comprising:
Core comprising metal oxide；With
Core and the shell including platinum or platinum alloy are surrounded, wherein core shell nanoparticles include { 111 } crystal face.
2. core shell nanoparticles according to claim 1, wherein the core is ruthenium-oxide.
3. core shell nanoparticles described in any one of -2 according to claim 1, wherein the shell is palladium-nickel alloy.
4. core shell nanoparticles described in any one of -2 according to claim 1, wherein the shell is platinum alloy, including Pt and One of Ni, Co, Fe, Cr, V, Mn, Cu, Zn, Ti, Zr, Y, W and Ta or a variety of.
5. core shell nanoparticles described in any one of -4 according to claim 1, wherein most of crystal face of core shell nanoparticles It is { 111 } face.
6. core shell nanoparticles described in any one of -4 according to claim 1, wherein all crystalline substances of the core shell nanoparticles Face is { 111 } face.
7. core shell nanoparticles according to claim 1 to 6, wherein the core shell nanoparticles are carbon loads 's.
8. a kind of method for preparing core shell nanoparticles, which comprises
Form the core comprising one or more metal oxide containing precious metals；With
Shell is formed around the core, wherein the shell includes platinum alloy, platinum alloy includes platinum and one or more transition metal.
9. according to the method described in claim 8, wherein the core includes ruthenium-oxide, and the shell includes palladium-nickel alloy.
10. the method according to any one of claim 8-9, wherein the core shell nanoparticles are prepared as comprising crystalline substance Face, and wherein most crystal face is { 111 }.
11. the method according to any one of claim 8-9, wherein all crystal faces of core shell nanoparticles are { 111 } faces.
12. a kind of method for preparing core shell nanoparticles, which comprises
One or more metals are mixed to form the first solution in one or more first solvents；
Aoxidize the first solution；
It heats the first solution and discards the first supernatant, to obtain the first core product；
Platinum presoma, alloy presoma and the first core product are mixed in one or more second solvents, to form the second solution；
It heats and mixes the second solution；
Cooling second solution simultaneously adds a kind of third solvent to precipitate core shell nanoparticles；With
Second supernatant is separated with core shell nanoparticles.
13. according to the method for claim 12, wherein one or more metals include platinum group metal, noble metal, platinum At least one of family metal oxide and metal oxide containing precious metals.
14. method described in any one of 2-13 according to claim 1, further includes:
Carbon carrier is added into one or more 4th solvents to form the 4th solution and be ultrasonically treated the 4th solution；
Core shell nanoparticles are added in the 4th solution to form the 5th solution and be ultrasonically treated the 5th solution to form carbon load Nucleocapsid catalyst；With
It abandons third supernatant and obtains nuclear shell on carbon nano particle.
15. method described in any one of 2-14 according to claim 1, wherein the first solvent includes oleyl amine.
16. method described in any one of 2-15 according to claim 1, wherein the second solvent includes benzylic ether, oleyl amine and oleic acid One of or it is a variety of.
17. method described in any one of 2-16 according to claim 1, wherein third solvent include one of toluene and alcohol or It is a variety of.
18. method described in any one of 2-17 according to claim 1, wherein the 4th solvent includes toluene.
19. method described in any one of 2-18 according to claim 1, wherein one or more metals include Ru, Rh, At least one of Pd, Os, Ir, Cu, Ag, Re and Au.
20. method described in any one of 2-19 according to claim 1, wherein one or more metals include Ni, Co, At least one of Fe, Cr, V, Mn, Cu, Zn, Ti, Zr, Y, W and Ta.
21. method described in any one of 2-20 according to claim 1, wherein the core shell nanoparticles include ruthenium-oxide core and Platinum alloy shell.
22. method described in any one of 2-21 according to claim 1, wherein the core shell nanoparticles are prepared as having crystalline substance Face, and plurality of crystal face is { 111 }.
23. according to the method for claim 22, wherein the major part crystal face is { 111 }.
24. according to the method for claim 22, wherein all crystal faces are { 111 }.
CN201680091543.6A 2016-12-30 2016-12-30 Core shell nanoparticles catalyst Pending CN110114918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2016/001946 WO2018122569A1 (en) 2016-12-30 2016-12-30 Core-shell nanoparticle catalysts

Publications (1)

Publication Number Publication Date
CN110114918A true CN110114918A (en) 2019-08-09

Family

ID=62710905

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201680091543.6A Pending CN110114918A (en) 2016-12-30 2016-12-30 Core shell nanoparticles catalyst

Country Status (2)

Country Link
CN (1) CN110114918A (en)
WO (1) WO2018122569A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021156644A1 (en) * 2020-02-07 2021-08-12 The Hong Kong University Of Science And Technology Durable hybrid electrocatalysts for fuel cells
WO2022021617A1 (en) * 2020-07-31 2022-02-03 广州市香港科大霍英东研究院 Core-shell catalyst post-treatment method and system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109453773B (en) * 2018-10-23 2020-10-27 北京化工大学 Supported bimetallic core-shell structure catalyst and preparation method thereof
CN116351417A (en) * 2023-03-17 2023-06-30 陕西净豹新材料有限公司 Preparation method of composite nano catalytic material for removing nitrogen oxides in atmospheric environment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101038969A (en) * 2007-04-19 2007-09-19 复旦大学 Method for preparing ruthenium-core platinum-shell nanometer thin film having high catalytic activity
CN101522345A (en) * 2006-08-30 2009-09-02 尤米科尔股份公司及两合公司 Core/shell-type catalyst particles comprising metal or ceramic core materials and methods for their preparation
US20100189615A1 (en) * 2009-01-29 2010-07-29 Basf Catalysts Llc Mechanically fused materials for pollution abatement in mobile and stationaty sources
CN102969514A (en) * 2012-12-03 2013-03-13 哈尔滨工业大学 Metal-coated oxide nano core-shell structure catalyst and preparation method thereof
CN104607203A (en) * 2015-01-22 2015-05-13 中国科学院福建物质结构研究所 Platinum-based alloy core-shell structure (heterostructure) nano-catalyst adopting platinum defects on surface and oxide nano clusters and preparation method of catalyst
CN105144443A (en) * 2012-10-22 2015-12-09 奥迪股份公司 Platinum alloy nano catalyst with a non-platinum core

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8288308B2 (en) * 2006-08-30 2012-10-16 Umicore Ag & Co. Kg Core/shell-type catalyst particles and methods for their preparation
KR100766965B1 (en) * 2006-11-23 2007-10-15 삼성에스디아이 주식회사 Catalyst for cathode of fuel cell, membrane-electrode assembly for fuel cell and fuel cell system
US20080220296A1 (en) * 2007-01-08 2008-09-11 University Of Maryland Office Of Technology Commercialization PtRu core-shell nanoparticles for heterogeneous catalysis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101522345A (en) * 2006-08-30 2009-09-02 尤米科尔股份公司及两合公司 Core/shell-type catalyst particles comprising metal or ceramic core materials and methods for their preparation
CN101038969A (en) * 2007-04-19 2007-09-19 复旦大学 Method for preparing ruthenium-core platinum-shell nanometer thin film having high catalytic activity
US20100189615A1 (en) * 2009-01-29 2010-07-29 Basf Catalysts Llc Mechanically fused materials for pollution abatement in mobile and stationaty sources
CN105144443A (en) * 2012-10-22 2015-12-09 奥迪股份公司 Platinum alloy nano catalyst with a non-platinum core
CN102969514A (en) * 2012-12-03 2013-03-13 哈尔滨工业大学 Metal-coated oxide nano core-shell structure catalyst and preparation method thereof
CN104607203A (en) * 2015-01-22 2015-05-13 中国科学院福建物质结构研究所 Platinum-based alloy core-shell structure (heterostructure) nano-catalyst adopting platinum defects on surface and oxide nano clusters and preparation method of catalyst

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021156644A1 (en) * 2020-02-07 2021-08-12 The Hong Kong University Of Science And Technology Durable hybrid electrocatalysts for fuel cells
CN114982021A (en) * 2020-02-07 2022-08-30 香港科技大学 Durable composite fuel cell electrocatalyst
WO2022021617A1 (en) * 2020-07-31 2022-02-03 广州市香港科大霍英东研究院 Core-shell catalyst post-treatment method and system

Also Published As

Publication number Publication date
WO2018122569A1 (en) 2018-07-05

Similar Documents

Publication Publication Date Title
Kim et al. Noble metal‐based multimetallic nanoparticles for electrocatalytic applications
Park et al. Iridium-based multimetallic nanoframe@ nanoframe structure: an efficient and robust electrocatalyst toward oxygen evolution reaction
Yan et al. Intermetallic nanocrystals: Syntheses and catalytic applications
CN110114918A (en) Core shell nanoparticles catalyst
Bai et al. Ultrathin rhodium oxide nanosheet nanoassemblies: synthesis, morphological stability, and electrocatalytic application
Deivaraj et al. Preparation of PtNi nanoparticles for the electrocatalytic oxidation of methanol
Mazumder et al. Core/shell Pd/FePt nanoparticles as an active and durable catalyst for the oxygen reduction reaction
Wu et al. Icosahedral platinum alloy nanocrystals with enhanced electrocatalytic activities
Peng et al. Synthesis and oxygen reduction electrocatalytic property of platinum hollow and platinum-on-silver nanoparticles
Tabatabaei Rezaei et al. Chemoselective reduction of nitro and nitrile compounds with magnetic carbon nanotubes-supported Pt (II) catalyst under mild conditions
US10693146B2 (en) Production method for fine metal particles, production method for fuel cell electrode catalyst, supported fine metal particle catalyst, and fuel cell electrode catalyst
JP5715726B2 (en) Ruthenium fine particles having substantially face-centered cubic structure and method for producing the same
JP2011089143A (en) Method for producing mono-component system and bi-component system cubic type metal nanoparticle
JP5502793B2 (en) High durability fuel cell catalyst and method for producing the same
WO2018181568A1 (en) Metal composite particles and method for producing same, metal composite particle carrier and method for producing same, and particle composition
WO2011108250A1 (en) Catalyst loaded with fine noble metal particles, method for producing same, and purification catalyst
Wang et al. Controlled assembly of hierarchical metal catalysts with enhanced performances
WO2016017268A1 (en) Method for producing core-shell catalyst
EP3424619A1 (en) Multicomponent solid solution microparticles and method for producing same, and catalyst
CN105859610A (en) Synthesis method of 2,2'-dipyridine by using supported bimetal nano catalyst
JP6269581B2 (en) Method for producing core-shell catalyst for fuel cell electrode
Kim et al. One-pot synthesis of ternary alloy hollow nanostructures with controlled morphologies for electrocatalysis
CN113042089A (en) Supported nano palladium catalyst for synthesizing benzaldehyde from oxygen and benzyl alcohol and preparation method thereof
JP2021530344A (en) Nanoparticles and preparation method
Fang et al. PdRu nanocages as the switcher for the production of hydrogenation reaction toward 4-nitrostyrene

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
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190809

WD01 Invention patent application deemed withdrawn after publication