CN106984332A - It is a kind of to be carried on the platinum cobalt nanocomposites on carbon dust surface and preparation method thereof - Google Patents
It is a kind of to be carried on the platinum cobalt nanocomposites on carbon dust surface and preparation method thereof Download PDFInfo
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- CN106984332A CN106984332A CN201710316344.7A CN201710316344A CN106984332A CN 106984332 A CN106984332 A CN 106984332A CN 201710316344 A CN201710316344 A CN 201710316344A CN 106984332 A CN106984332 A CN 106984332A
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- cobalt
- platinum
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- salt
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- CLBRCZAHAHECKY-UHFFFAOYSA-N [Co].[Pt] Chemical compound [Co].[Pt] CLBRCZAHAHECKY-UHFFFAOYSA-N 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 title claims abstract description 27
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010941 cobalt Substances 0.000 claims abstract description 14
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 14
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 150000001868 cobalt Chemical class 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 150000003057 platinum Chemical class 0.000 claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 8
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 8
- SDKPSXWGRWWLKR-UHFFFAOYSA-M sodium;9,10-dioxoanthracene-1-sulfonate Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)[O-] SDKPSXWGRWWLKR-UHFFFAOYSA-M 0.000 claims abstract description 8
- 238000005119 centrifugation Methods 0.000 claims abstract description 7
- 238000002604 ultrasonography Methods 0.000 claims abstract description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010931 gold Substances 0.000 claims abstract description 4
- 229910052737 gold Inorganic materials 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 6
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 6
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 6
- 239000005642 Oleic acid Substances 0.000 claims description 6
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 6
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 6
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- XCJXQCUJXDUNDN-UHFFFAOYSA-N chlordene Chemical compound C12C=CCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl XCJXQCUJXDUNDN-UHFFFAOYSA-N 0.000 claims description 3
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 3
- 229940071240 tetrachloroaurate Drugs 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 2
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 claims description 2
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical group [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 18
- 239000002086 nanomaterial Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002574 poison Substances 0.000 abstract description 3
- 231100000614 poison Toxicity 0.000 abstract description 3
- 238000007146 photocatalysis Methods 0.000 abstract description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 12
- 239000012467 final product Substances 0.000 description 6
- 229910002058 ternary alloy Inorganic materials 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000011258 core-shell material Substances 0.000 description 3
- 229910018949 PtAu Inorganic materials 0.000 description 2
- 229910002849 PtRu Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- UODSJVVFQIHYEB-UHFFFAOYSA-N cobalt gold platinum Chemical compound [Co].[Pt].[Au] UODSJVVFQIHYEB-UHFFFAOYSA-N 0.000 description 2
- -1 cobaltous sulfates Chemical class 0.000 description 2
- 239000012769 display material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RJHLTVSLYWWTEF-UHFFFAOYSA-K gold trichloride Chemical class Cl[Au](Cl)Cl RJHLTVSLYWWTEF-UHFFFAOYSA-K 0.000 description 1
- 238000006197 hydroboration reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003863 metallic catalyst Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002057 nanoflower Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8913—Cobalt and noble metals
-
- B01J35/39—
-
- 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
-
- 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
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
-
- 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
-
- 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
Abstract
It is a kind of to be carried on the platinum cobalt nanocomposites on carbon dust surface and preparation method thereof, it is related to functional material.The platinum cobalt nanocomposites are made up of platinum, gold and cobalt, and overall particle diameter is 2~50nm.The preparation method：The ethanol solution of inorganic cobalt salt is prepared, the ethanol solution of sodium borohydride is stirred and add, surfactant is added in solvent, product is obtained after reaction, product is washed, cobalt nano-particle is centrifuged to obtain；Cobalt nano-particle is scattered in a solvent, stir and add platinum salt and gold salt, add surfactant, oil bath heating, adds the scattered carbon dust in the solution by ultrasound, is cooled to room temperature, washing, centrifugation obtains being carried on the platinum cobalt nanocomposites on carbon dust surface.Method is simple, easy to operate, easily repeatability, and reaction condition is gentleer；Nano material has the advantages that stability, electro catalytic activity, low cost and methanol tolerance poison, and has potential application value in electrochemical catalysis, chemical sensor and photocatalysis.
Description
Technical field
The present invention relates to functional material, more particularly, to a kind of platinum cobalt nanocomposites for being carried on carbon dust surface and
Its preparation method.
Background technology
Cathod catalyst is one of important component of DMFC, and metal platinum is to have now been found that the most
Preferable catalyst, but it is because price is high, scarcity of resources and the shortcomings of easily poisoned by methanol, seriously limits direct first
The commercial applications of alcohol fuel battery.Therefore, the consumption of platinum how is reduced, while improve the activity of catalyst, into working as
One big hot issue of preceding research.
Present research direction is mainly divided into three kinds：
First, by the alloy to synthesize platinum and other metals based on platinum, metal platinum can so be effectively reduced
Consumption, while to a certain extent improve catalyst catalytic activity.Li, Miaoyu have found that PtRu catalytic activity is significantly larger than
Platinum monocrystal material (Li M, Zheng H, Han G, et al.Facile synthesis of binary PtRu
nanoflowers for advanced electrocatalysts toward methanol oxidation[J]
.Catalysis Communications,2017,92:95-99.), this is also the main of current fuel cell catalyst research
One of direction.
2nd, by synthesizing the metallic catalyst of the core shell structure based on platinum, this current block is the heat of catalyst research
Point.Zhang Z have found that platinoid core shell structure catalytic activity is better than Pt single crystal materials (Zhang Z, Yang B, Hao X, et
al.Synthesis of Bimetallic PtCu Core–Shell Structured Catalyst and Its
Catalytic Activity Toward Hydrogen Evolution Reaction[J].Journal of
Nanoscience＆Nanotechnology, 2017.), one of current fuel cell studies direction.
3rd, platinum is substituted as catalyst, but so far by using non-platinum, the effect of acquirement is less notable.
Sun Xiujuan has found also there is catalytic effect (efficient base metal fuel electricity of the beautiful of Sun Xiu based on cheap carbon black using non-platinum
The university of research [D] the Chinese Academy of Sciences of pool cathode catalyst, 2014.).
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of platinum cobalt nanometer for being carried on carbon dust surface is multiple
Condensation material and preparation method thereof.
The platinum cobalt nanocomposites for being carried on carbon dust surface by platinum, gold and cobalt constitute, overall particle diameter be 2~
50nm, the ability poisoned with good methanol tolerance, particle size is consistent, and the overall dispersiveness of material is uniform, and preparation method work
Skill is simple, easy to operate, and the reaction condition used is gentle, and repeatability is high, environmentally friendly.
Platinum cobalt binary alloy nano particle replaces simple platinum as cathod catalyst, can reduce the cost of catalyst,
By adding gold element on the basis of platinum cobalt alloy, catalyst methanol tolerance can be improved and poison ability.
The preparation method of the platinum cobalt nanocomposites for being carried on carbon dust surface comprises the following steps：
1) ethanol solution of inorganic cobalt salt is prepared, stirs and adds the ethanol solution of sodium borohydride, add surface-active
Agent obtains product in solvent after reaction, product is washed, and centrifugation obtains cobalt nano-particle；
2) by step 1) made from cobalt nano-particle it is scattered in a solvent, stir and add platinum salt and gold salt, add table
Face activating agent, oil bath heating adds the scattered carbon dust in the solution by ultrasound, is cooled to room temperature, washs, and centrifugation is born
It is loaded in the platinum cobalt nanocomposites on carbon dust surface.
In step 1) in, the molar concentration of the ethanol solution of the sodium borohydride can be 0.0020~0.9000M；It is described to add
The mass ratio of the ethanol solution of the inorganic cobalt salt entered and the ethanol solution of sodium borohydride can be 1 ︰ (2~5)；The surfactant
One kind in cetyl trimethylammonium bromide, polyethylene glycol, oleic acid etc.；The inorganic cobalt salt is selected from cobalt chloride, nitric acid
One kind in cobalt, cobaltous sulfate etc.；The solvent may be selected from one kind in water, ethylene glycol, isopropanol, acetone etc.；The reaction
Time can be 2~8h.
In step 2) in, the platinum salt and gold salt and step 1) in the mass ratio of inorganic cobalt salt that is added can be the ︰ of 2 ︰ 1
The ︰ 2 of 1 to 1 ︰ 2；The mass ratio of the platinum salt, surfactant and carbon dust can be the ︰ 1500 of 500 ︰, 1 ︰, 300 to 50 ︰ 1；The platinum salt can
One kind in chloroplatinic acid, potassium hexachloroplatinate, potassium tetrachloroplatinate etc.；The gold salt may be selected from gold chloride, chlordene alloy
One kind in sour potassium, potassium tetrachloroaurate etc.；The solvent may be selected from one kind in water, ethylene glycol, isopropanol, acetone etc.；Institute
State surfactant and may be selected from one kind in cetyl trimethylammonium bromide, polyethylene glycol, oleic acid etc.；The oil bath heating
Temperature can be 60~200 DEG C；The time of the oil bath heating can be 4~8h.
Preparation method provided by the present invention is relatively simple, easy to operate, easily repeatability, and reaction condition is gentleer；It is prepared
Nano material have the advantages that high stability, high electrocatalytic active, low cost and methanol tolerance poison, electrochemical catalysis, change
Learning sensor and photocatalysis field has potential application value.
Brief description of the drawings
Fig. 1 is the transmission electron microscope picture of the platinum cobalt ternary-alloy nano material of embodiment 1.In Fig. 1, scale is 50nm, is shone
The size of piece display material is between 2~50nm, and size is more homogeneous.
Fig. 2 is the transmission electron microscope picture of the platinum cobalt ternary-alloy nano material of embodiment 1.In fig. 2, scale is 50nm.
Fig. 3 is the XRD of the platinum cobalt ternary-alloy nano material of embodiment 1.In figure 3, abscissa is two times of incidences
Angle (2-Theta), ordinate is diffracted intensity (Intensity), and with commercialization Pt/C comparison diagrams, mark a is JM-Pt/C-
40%, b are PtAu@Co/C-1#, and c is PtAu@Co/C-2#.
Fig. 4 is the transmission electron microscope picture of the platinum cobalt ternary-alloy nano material of embodiment 2.In Fig. 4, scale is 20nm, is shone
Piece display material pattern and size are more homogeneous.
Fig. 5 is the transmission electron microscope picture of the platinum cobalt ternary-alloy nano material of embodiment 2.In Figure 5, scale is 20nm, is shone
Piece shows that material morphology and size are more homogeneous.
Embodiment
A kind of platinum cobalt ternary-alloy nano material of above-mentioned offer and preparation method thereof, preparation method is simple, repeats
Property it is high, easy to operate, the reaction condition used is more gentle, environmentally friendly.Below in conjunction with the accompanying drawings by embodiment to this hair
It is bright to be described further.It is understood, however, that embodiment is for explaining embodiment of the present invention, without departing from the present invention
In the range of theme, the scope of the present invention is not limited by the embodiment.
Embodiment 1
Take 0.02376g cobaltous sulfates to be dispersed in 50ml ethylene glycol solutions, add 0.02545g cetyl trimethyl brominations
Ammonium, stirs at room temperature under being placed in flask；Then the hydroboration that concentration is 0.1M is matched somebody with somebody toward the new of addition 0.6mL in reaction solution
Sodium solution, now solution by water white transparency be changed into yellow, sustained response 3h after obtain cobalt nano-particle.
Obtained cobalt granule is dispersed in 50ml ethylene glycol solutions, is slowly stirred and is added and adds the concentration that 1ml newly matches somebody with somebody
For the high platinic acid of 0.01931M and 0.02054g gold chlorides and 0.02545g cetyl trimethylammonium bromides are added, 120 DEG C of oil baths
4h is heated, the carbon dust 0.0200g being dispersed in ethylene glycol solution by ultrasound is added, naturally cools to room temperature, washed,
Centrifugation obtains platinum cobalt gold nano grain.
Embodiment 2
Take 0.02376g cobaltous sulfates to be dispersed in 50ml aqueous isopropanols, 0.014337g oleic acid is added, under being placed in flask
Stir at room temperature；Then the sodium borohydride solution that concentration is 0.1M is matched somebody with somebody toward the new of addition 0.6mL in reaction solution, now solution is by nothing
Color transparent transition is yellow, obtains cobalt nano-particle after sustained response 3h.
Obtained cobalt granule is dispersed in 50ml aqueous isopropanols, is slowly stirred and is added and adds the concentration that 1ml newly matches somebody with somebody
Potassium aurate is closed for the high platinic acid of 0.01931M and 0.01748g chlordenes and 0.01437g oleic acid is added, and 120 DEG C of oil bath heating 6h are added
By the carbon dust 0.0200g being dispersed in aqueous isopropanol of ultrasound, room temperature is naturally cooled to, is washed, centrifugation obtains platinum
Cobalt gold nano grain.
Embodiment 3
It is similar to Example 1, the difference is that inorganic cobalt salt used is 0.02389g cobalt nitrate, stir equal at room temperature
It is even.Then step is same as Example 1, and only is not both that the inorganic platinum salt of input closes potassium aurate for 0.01748g chlordene,
Final product be the same as Example 1.
Embodiment 4
Similar to Example 1, the difference is that solvent used is water, then step is same as Example 1, and final product is same
Embodiment 1.
Embodiment 5
It is similar to Example 1, the difference is that inorganic cobalt salt used is 0.02389g cobalt chloride, stir equal at room temperature
It is even.Then step is same as Example 1, final product be the same as Example 1.
Embodiment 6
It is similar to Example 1, the difference is that surfactant used is 0.01374g polyethylene glycol, stir at room temperature
Uniformly.Then step is same as Example 1, final product be the same as Example 1.
Embodiment 7
It is similar to Example 2, the difference is that inorganic gold salt used is 0.01980g potassium tetrachloroaurate, stir at room temperature
Mix uniform.Reaction time is 7h, and then step is same as Example 2, final product be the same as Example 2.
Embodiment 8
Similar to Example 2, the difference is that reaction temperature is 70 DEG C, then step is same as Example 2, and final product is same
Embodiment 2.
Claims (10)
1. a kind of platinum cobalt nanocomposites for being carried on carbon dust surface, it is characterised in that be made up of platinum, gold and cobalt, overall grain
Footpath is 2~50nm.
2. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 1, it is characterised in that
Comprise the following steps：
1) prepare the ethanol solution of inorganic cobalt salt, stir and add the ethanol solution of sodium borohydride, add surfactant in
In solvent, product is obtained after reaction, product is washed, centrifugation obtains cobalt nano-particle；
2) by step 1) made from cobalt nano-particle it is scattered in a solvent, stir and add platinum salt and gold salt, add surface work
Property agent, oil bath heating, add by ultrasound scattered carbon dust in the solution, be cooled to room temperature, wash, centrifugation be carried on
The platinum cobalt nanocomposites on carbon dust surface.
3. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 1) in, the molar concentration of the ethanol solution of the sodium borohydride is 0.0020~0.9000M.
4. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 1) in, the mass ratio of the ethanol solution of the inorganic cobalt salt of the addition and the ethanol solution of sodium borohydride for 1 ︰ (2~
5)；The one kind of the surfactant in cetyl trimethylammonium bromide, polyethylene glycol, oleic acid.
5. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 1) in, the one kind of the inorganic cobalt salt in cobalt chloride, cobalt nitrate, cobaltous sulfate；The solvent is selected from water, second two
One kind in alcohol, isopropanol, acetone；The time of the reaction is 2~8h.
6. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 2) in, the platinum salt and gold salt and step 1) in the mass ratio of inorganic cobalt salt that is added be the ︰ 2 of 2 ︰, 1 ︰, 1 to 1 ︰ 2.
7. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 2) in, the mass ratio of the platinum salt, surfactant and carbon dust is the ︰ 1500 of 500 ︰, 1 ︰, 300 to 50 ︰ 1.
8. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 2) in, the one kind of the platinum salt in chloroplatinic acid, potassium hexachloroplatinate, potassium tetrachloroplatinate；The gold salt is selected from
Gold chloride, chlordene close one kind in potassium aurate, potassium tetrachloroaurate；The solvent is in water, ethylene glycol, isopropanol, acetone
One kind.
9. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 2) in, the one kind of the surfactant in cetyl trimethylammonium bromide, polyethylene glycol, oleic acid.
10. the preparation method of the platinum cobalt nanocomposites on carbon dust surface is carried on as claimed in claim 2, it is characterised in that
In step 2) in, the temperature of the oil bath heating is 60~200 DEG C；The time of the oil bath heating is 4~8h.
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Citations (3)
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| US20120058888A1 (en) * | 2004-10-29 | 2012-03-08 | Umicore Ag & Co. Kg | Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith |
| CN103285880A (en) * | 2013-05-28 | 2013-09-11 | 浙江科技学院 | Preparation method of proton exchange membrane fuel battery catalyst |
| CN105762378A (en) * | 2016-03-14 | 2016-07-13 | 北京工业大学 | Method for synthesizing supported ternary platinum alloy catalyst |
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|---|---|---|---|---|
| US20120058888A1 (en) * | 2004-10-29 | 2012-03-08 | Umicore Ag & Co. Kg | Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith |
| CN103285880A (en) * | 2013-05-28 | 2013-09-11 | 浙江科技学院 | Preparation method of proton exchange membrane fuel battery catalyst |
| CN105762378A (en) * | 2016-03-14 | 2016-07-13 | 北京工业大学 | Method for synthesizing supported ternary platinum alloy catalyst |
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