CN101537353B - Preparation method of single-dimensional nano composite material - Google Patents

Preparation method of single-dimensional nano composite material Download PDF

Info

Publication number
CN101537353B
CN101537353B CN2009101166681A CN200910116668A CN101537353B CN 101537353 B CN101537353 B CN 101537353B CN 2009101166681 A CN2009101166681 A CN 2009101166681A CN 200910116668 A CN200910116668 A CN 200910116668A CN 101537353 B CN101537353 B CN 101537353B
Authority
CN
China
Prior art keywords
preparation
dimensional nano
composite material
salt
composite
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.)
Expired - Fee Related
Application number
CN2009101166681A
Other languages
Chinese (zh)
Other versions
CN101537353A (en
Inventor
耿保友
王倩
桑艳
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.)
Anhui Normal University
Original Assignee
Anhui Normal University
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 Anhui Normal University filed Critical Anhui Normal University
Priority to CN2009101166681A priority Critical patent/CN101537353B/en
Publication of CN101537353A publication Critical patent/CN101537353A/en
Application granted granted Critical
Publication of CN101537353B publication Critical patent/CN101537353B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Abstract

The invention discloses a preparation method of single-dimensional nano composite material. The method comprises the following steps of: A. spin-coating the dispersion liquid of the single-dimensional nano material on sheet copper with the coating density being 0.004-0.04g/cm<2>; B. preparing noble metal salt into a solution with the concentration of 0.0019-0.007mol/L under room temperature; C. putting the spin-coated sheet copper in the prepared solution and soaking for 1-30min; and D. taking out the sheet copper, washing the sheet copper in deionized water and drying naturally. Compared with the prior art, the method is controllable, is short in process, easy in operation, strong in reproductivity and universally applicable, the prepared product has high purity, the noble metal particles have uniform diameter, high load factor and good activity, are not prone to agglomerate, have excellent electrical conductivity, larger electrical active surface and higher electrical catalytic activity, and can be used for heterocatalysis and as the electrode materials for electrical catalysis and fuel cells.

Description

The preparation method of one-dimensional nano-composite material
Technical field:
The invention belongs to this technical field of preparation method of inorganic nano composite material, the preparation method of a kind of monodimension nanometer material and noble metal nano particles composite is provided.
Technical background:
Composite nano materials is owing to compare with its constituent and to have multifunctionality and extensively paid close attention to.Wherein, one-dimensional nano-composite material becomes one of focus of research.This composite has the optics relevant with yardstick, electricity, engineering properties, and easy device is expected in nano-device to play an important role as active component or jockey.Noble metal nano particles has good stability and biocompatibility, unique catalytic property.And the compound nano material of monodimension nanometer material and noble metal nano particles can possess even strengthen the character of two kinds of functional materials simultaneously, thereby has broad application prospects in fields such as optics, electricity, biomedicine and heterocatalysis.Present synthetic method, as thermal decomposition, electro-deposition etc., can't carry out better controlled for size, pattern and the load factor of prepared noble metal nano particles, and the experimental procedure complexity, cost is higher, and these factors have all greatly influenced the application of composite.In order to overcome above-mentioned shortcoming, just must improve the controllability of preparation noble metal nano particles and the process efficiency of monodimension nanometer material and noble metal nano particles Composite Preparation.
Summary of the invention:
A kind of technical problem to be solved by this invention provides the method that a kind of technology simply prepares monodimension nanometer material and noble metal nano particles composite.
The technical scheme of technical solution problem of the present invention is that the preparation method of one-dimensional nano-composite material comprises the following steps:
A, spin coating operation: the dispersion liquid of monodimension nanometer material is spun on the copper sheet, and coating density is 0.004g/cm 2-0.04g/cm 2
B, solution preparation process: under the room temperature precious metal salt is prepared the solution that becomes 0.0019mol/L-0.007mol/L.
C, preparation composite operation: the copper sheet that above-mentioned spin coating is good places the solution for preparing, and the copper sheet soak time is 1 minute to 30 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain monodimension nanometer material and noble metal nano particles composite with deionized water.
Described monodimension nanometer material is: CNT, semiconductor oxide zinc nanometer rods, strontium phosphate nanometer rods etc.CNT preferably.
Described precious metal salt is golden salt, palladium salt, platinum salt.
Described golden salt is: HAuCl 4Described palladium salt is: PdCl 2Described platinum salt is: H 6PtCl 6, K 2PtCl 4
In order to obtain the metal nano cubic block, also can in the solution preparation process, add cupric salt, divalent cobalt, its concentration is 0.0005mol/L-0.01mol/L.
Described cupric salt is: CuCl 2, Cu (NO 3) 2, CuSO 4CuCl preferably 2
Described divalent cobalt is: CoCl 2, Co (NO 3) 2, CoSO 4CoCl preferably 2
The present invention is by the displacement reaction between copper sheet and the precious metal salt solution, and copper simple substance displaces the noble metal in the precious metal salt solution, makes its heterogeneous nucleation on the one-dimensional material of institute's spin coating on the copper sheet form the nano particle of noble metal.Cupric salt and divalent cobalt are as the auxiliary reagent of nano cubic block growth, selective absorption is at the particular growth face of nano particle, limit the growth of these faces, and other unrestricted constantly growth, finally formed cube block nano particle of noble metal.
The present invention compared with prior art, the synthetic method simple controllable of monodimension nanometer material and noble metal nano particles composite, flow process is short, easy to operate, repeatability is strong, and can generally be suitable for.The product purity height that makes by this method, the noble metal particle diameter is even, load factor is high, activity is good, be difficult for to reunite, have fabulous electrical conductivity, bigger electroactive surface and higher electro catalytic activity, can be used for heterogeneous catalysis and as the electrode material of electro-catalysis and fuel cell.
Description of drawings:
Fig. 1 is the X ray energy dispersive spectrum (EDS) that embodiment 1 makes CNT and cubic golden nanometer particle composite.
Fig. 2 is scanning electron microscopy (SEM) photo that embodiment 1 makes CNT and gold nano square composite.
Fig. 3 is transmission electron microscopy (TEM) photo that embodiment 1 makes CNT and gold nano square composite.
Fig. 4 is the cyclic voltammogram that embodiment 2 makes CNT and platinum nanometer square composite.
Fig. 5 is that embodiment 2 makes CNT and platinum nanometer square composite reduce O on glass-carbon electrode 2The cyclic voltammogram of reaction.
Shown in Fig. 4,5: 1 is naked glass-carbon electrode, and 2 is that the glass-carbon electrode, 3 that scribbles composite is the glass-carbon electrode that scribbles CNT, and 4 is naked platinum electrode, and 5 for scribbling the glass-carbon electrode of composite.
The specific embodiment:
Be the non-limiting preparation embodiment of the present invention below, the present invention be further described by these embodiment.
Embodiment 1:
A, spin coating operation: the dispersion liquid of CNT is spun on the copper sheet, and coating density is 0.012g/cm 2
B, solution preparation process: preparation gold chloride concentration is 0.0035mol/L, and copper chloride concentration is the mixed solution of 0.0075mol/L,
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 1 minute.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain CNT and golden nanometer particle composite with deionized water.
Its result as shown in Figure 1, 2, 3, as shown in Figure 1, product does not contain other impurity, purity is very high.As shown in Figure 2, noble metal nano cubic block particle diameter is even, load factor is high, does not have and reunites.As shown in Figure 3, CNT passes the noble metal nano cubic block, and two kinds of material adhesions are big, difficult drop-off.
Embodiment 2:
A, spin coating operation: the dispersion liquid of CNT is spun on the copper sheet, and coating density is 0.04g/cm 2
B, solution preparation process: preparation chloroplatinic acid concentration is 0.0056mol/L, and cobalt chloride concentration is the mixed solution of 0.0025mol/L.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 5 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain CNT and nano platinum particle composite with deionized water.
Embodiment 3:
A, spin coating operation: the dispersion liquid of zinc oxide nano rod is spun on the copper sheet, and coating density is 0.004g/cm 2
B, solution preparation process: preparation gold chloride concentration is 0.007mol/L, does not add cupric salt or cobalt salt.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 30 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain zinc oxide nano rod and golden nanometer particle composite with deionized water.
Owing to do not add cupric salt and cobalt salt in B, solution preparation process, its soak time obviously prolongs.
Embodiment 4:
A, spin coating operation: the dispersion liquid of zinc oxide nano rod is spun on the copper sheet, and coating density is 0.008g/cm 2
B, solution preparation process: preparation palladium bichloride concentration is 0.0028mol/L, and copper nitrate concentration is the mixed solution of 0.0045mol/L.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 20 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain zinc oxide nano rod and Pd nano particle composite with deionized water.
Embodiment 5:
A, spin coating operation: the dispersion liquid of strontium phosphate nanometer rods is spun on the copper sheet, and coating density is 0.016g/cm 2
B, solution preparation process: preparation palladium bichloride concentration is 0.0019mol/L, and cobalt nitrate concentration is the mixed solution of 0.01mol/L.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 10 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain strontium phosphate nanometer rods and Pd nano particle composite with deionized water.
Embodiment 6:
A, spin coating operation: the dispersion liquid of strontium phosphate nanometer rods is spun on the copper sheet, and coating density is 0.032g/cm 2
B, solution preparation process: preparation potassium chloroplatinate concentration is 0.0049mol/L, and concentration of copper sulfate is the mixed solution of 0.0015mol/L.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 15 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain strontium phosphate nanometer rods and nano platinum particle composite with deionized water.
Embodiment 7:
A, spin coating operation: the dispersion liquid of CNT is spun on the copper sheet, and coating density is 0.02g/cm 2
B, solution preparation process: preparation chloroplatinic acid concentration is 0.0063mol/L, and cobalt sulfate concentration is the mixed solution of 0.0005mol/L.
C, preparation composite operation: the copper sheet that spin coating is good is positioned in the solution and soaked 12 minutes.
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain CNT and nano platinum particle composite with deionized water.
Embodiment 8:
Embodiment 2 gained CNTs and nano platinum particle composite are coated on the 3mm glass-carbon electrode, immerse 5.0 * 10 -3M K 3Fe (CN) 6Mixed electrolytic solution with 0.2M KCl.Sweep speed is 100mV s -1The saturated Ag/AgCl of KCl is as reference electrode.Characterize the electrical conductivity of gained composite, the result is shown in accompanying drawing four, and under the identical experimental condition, the peak current of composite (1) is higher than naked glass-carbon electrode (2), and the peak position difference is less than naked glass-carbon electrode.Therefore, composite has fabulous electrical conductivity.
Embodiment 9:
Embodiment 2 gained CNTs and nano platinum particle composite are coated on the 3mm glass-carbon electrode, immerse 0.5M H 2SO 4Electrolyte.Sweep speed is 100mV s -1The saturated Ag/AgCl of KCl is as reference electrode.Characterize the electro catalytic activity of gained composite, the result shown in accompanying drawing five, composite (curve 5) catalytic reduction O 2Reduction potential apparently higher than naked platinum electrode (4) and CNT (3), reduction current is very big, illustrates that composite has very high electro catalytic activity.

Claims (9)

1. the preparation method of one-dimensional nano-composite material comprises the following steps:
A, spin coating operation: the dispersion liquid of monodimension nanometer material is spun on the copper sheet, and coating density is 0.004g/cm 2-0.04g/cm 2
B, solution preparation process: under the room temperature precious metal salt is prepared the solution that becomes 0.0019mol/L-0.007mol/L;
C, preparation composite operation: the copper sheet that above-mentioned spin coating is good places the solution for preparing, and the copper sheet soak time is 1 minute to 30 minutes;
D, washing drying process: take out copper sheet, wash, dry naturally then and obtain monodimension nanometer material and noble metal nano particles composite with deionized water;
Described monodimension nanometer material is: CNT, semiconductor oxide zinc nanometer rods, strontium phosphate nanometer rods.
2. the preparation method of one-dimensional nano-composite material according to claim 1, it is characterized in that: described monodimension nanometer material is a CNT.
3. the preparation method of one-dimensional nano-composite material according to claim 1, it is characterized in that: described precious metal salt is golden salt, palladium salt, platinum salt.
4. the preparation method of one-dimensional nano-composite material according to claim 3, it is characterized in that: described golden salt is: HAuCl 4Described palladium salt is: PdCl 2Described platinum salt is: H 6PtCl 6, K 2PtCl 4
5. the preparation method of one-dimensional nano-composite material according to claim 1, it is characterized in that: add cupric salt, divalent cobalt in B, solution preparation process, its concentration is 0.0005mol/L-0.01mol/L.
6. the preparation method of one-dimensional nano-composite material according to claim 5, it is characterized in that: described cupric salt is CuCl 2, Cu (NO 3) 2, CuSO 4
7. the preparation method of one-dimensional nano-composite material according to claim 6, it is characterized in that: described cupric salt is CuCl 2
8. the preparation method of one-dimensional nano-composite material according to claim 5, it is characterized in that: described divalent cobalt is CoCl 2, Co (NO 3) 2, CoSO 4
9. the preparation method of one-dimensional nano-composite material according to claim 8, it is characterized in that: described divalent cobalt is CoCl 2
CN2009101166681A 2009-04-29 2009-04-29 Preparation method of single-dimensional nano composite material Expired - Fee Related CN101537353B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009101166681A CN101537353B (en) 2009-04-29 2009-04-29 Preparation method of single-dimensional nano composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009101166681A CN101537353B (en) 2009-04-29 2009-04-29 Preparation method of single-dimensional nano composite material

Publications (2)

Publication Number Publication Date
CN101537353A CN101537353A (en) 2009-09-23
CN101537353B true CN101537353B (en) 2011-05-11

Family

ID=41120874

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009101166681A Expired - Fee Related CN101537353B (en) 2009-04-29 2009-04-29 Preparation method of single-dimensional nano composite material

Country Status (1)

Country Link
CN (1) CN101537353B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102437316A (en) * 2011-12-17 2012-05-02 合肥国轩高科动力能源有限公司 Processing method for carrying out surface metal nanoparticles coating modification on lithium ion battery material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1789497A (en) * 2004-12-15 2006-06-21 中国科学院生态环境研究中心 Electrode for removing nitrate from water and preparation method thereof
CN1789498A (en) * 2004-12-15 2006-06-21 中国科学院生态环境研究中心 Metal modified active carbon fiber electrode and method for removing nitrate thereby

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1789497A (en) * 2004-12-15 2006-06-21 中国科学院生态环境研究中心 Electrode for removing nitrate from water and preparation method thereof
CN1789498A (en) * 2004-12-15 2006-06-21 中国科学院生态环境研究中心 Metal modified active carbon fiber electrode and method for removing nitrate thereby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2005-322446A 2005.11.17

Also Published As

Publication number Publication date
CN101537353A (en) 2009-09-23

Similar Documents

Publication Publication Date Title
Lu et al. Nano-PtPd cubes on graphene exhibit enhanced activity and durability in methanol electrooxidation after CO stripping–cleaning
Ghosh et al. Conducting polymer-supported palladium nanoplates for applications in direct alcohol oxidation
Miao et al. Engineering a nanotubular mesoporous cobalt phosphide electrocatalyst by the Kirkendall effect towards highly efficient hydrogen evolution reactions
Wang et al. Small and well-dispersed Cu nanoparticles on carbon nanofibers: self-supported electrode materials for efficient hydrogen evolution reaction
Li et al. Ultrafast fabrication of Cu oxide micro/nano-structures via laser ablation to promote oxygen evolution reaction
CN109449466A (en) Preparation method, the preparation method of membrane electrode anode catalyst layer of membrane electrode
CN111370716B (en) Superfine three-dimensional platinum nanowire array growing on substrate under control of strong ligand and method thereof
CN111634954B (en) Iron-modified cobalt-iron oxide with self-assembled flower ball structure and preparation and application thereof
CN103212422B (en) The preparation method of the carbon nano-fiber composite material of supported palladium cobalt alloy nano particle and the electrocatalytic oxidation method of formic acid or methyl alcohol
CN109097978A (en) Conductive-nano-fibers porous film material of area load nano-metal particle and preparation method thereof
CN104001525A (en) Preparation method for PtCu/C catalyst
CN107342427A (en) A kind of preparation method of Direct Ethanol Fuel Cell Pd/Ag nanometer alloy catalysts
CN110787823A (en) Three-dimensional nitrogen-doped flower-shaped carbon sphere loaded superfine nitrogen-doped molybdenum carbide nano particle, and preparation method and application thereof
CN104084193A (en) Method for preparing Pt catalyst
CN109913887A (en) A kind of flexible electrode catalyst and its preparation method and application of the nitrogen-doped carbon cladding Pt nanoparticle based on electrostatic spinning technique
CN103165914A (en) Pt/Au/PdCo/C catalyst, and preparation and application thereof
Li et al. NiCo2O4/carbon nanofibers composite as an efficient counter electrode for dye-sensitized solar cells
Hameed et al. Tin oxide as a promoter for copper@ palladium nanoparticles on graphene sheets during ethanol electro-oxidation in NaOH solution
CN101165213A (en) Method for preparing nano-stick array electrode capable of self-assembling after dispersing
CN101537353B (en) Preparation method of single-dimensional nano composite material
Tian et al. Performance of ethanol electro-oxidation on Ni–Cu alloy nanowires through composition modulation
CN108620602A (en) A kind of dendritic Pt of nanometer, preparation method and the application in the oxidation of electro-catalysis methanol
CN113083272A (en) FeNxPreparation method of nano-particle doped bamboo-like carbon nano-tube
CN111111650B (en) Electrochemical preparation method of rGO/carbon paper supported noble metal nanoparticle catalyst
CN105413679B (en) A kind of preparation method of graphene two-dimensional noble metal cluster composite

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110511

Termination date: 20180429