CN102101175B - Preparation method of gold nanotube material and application thereof - Google Patents
Preparation method of gold nanotube material and application thereof Download PDFInfo
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- CN102101175B CN102101175B CN201010597233A CN201010597233A CN102101175B CN 102101175 B CN102101175 B CN 102101175B CN 201010597233 A CN201010597233 A CN 201010597233A CN 201010597233 A CN201010597233 A CN 201010597233A CN 102101175 B CN102101175 B CN 102101175B
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Abstract
The invention relates to a preparation method of gold nanotube material and the application thereof, belonging to the technical field of material preparation. The preparation method of the gold nanotube material comprises the steps of: (1) preparation of a silver nano-wire; (2) preparation of a gold nanotube; and (3) preparation of an electrode actually applied by the gold nanotube. In the preparation process of the gold nanotube, the silver nano-wire is synthesized by a polyol method and then reacts with a gold source by a sacrificing template method after purification and separation, so that the gold nanotube can be prepared. The prepared gold nanotube is better in electric conduction capability and can be further used for catalyst material and the fields of analysis and detection.
Description
Technical field
The present invention relates to a kind of gold nanotubes preparation methods and reach application, belong to technical field of material in the analyzing and testing field.
Background technology
The quick progress of nanotechnology research has driven the development of numerous cross disciplines.Nano material is because its distinctive small-size effect and interfacial effect, thereby shows the significant difference of forming with same material of macroscopic material, embodies many useful performances and brand-new function.Tubular material has better tunnel-effect owing to its its specific structure characteristics and the electronics transmission capacity has caused concern widely.Like gold nanotubes since excellent conducting performance all obtained widely using in every field.Thereby gold nanotubes is modified the purpose that electrode surface reaches the stability that improves detection sensitivity and detection method as short electron transport substance.
Summary of the invention
The objective of the invention is to prepare a kind of gold nanotubes with special construction.
Two of the object of the invention is based on the practical application of the gold nanotubes of preparation.
Technical scheme of the present invention: a kind of gold nanotubes preparation methods, step are the preparation of (1) nano silver wire, the preparation of the preparation of (2) gold nanotubes and (3) gold nanotubes practical application electrode;
(1) preparation of nano silver wire:
Heated and stirred keeps 5min to 160-180 ℃ after in clean conical flask, adding 40 mL ethylene glycol, adds 0.01mol/L liquor argenti nitratis ophthalmicus 6mL, heats while stirring; Solution colour gradually becomes yellow from faint yellow, after color no longer changes, continues heating and keeps 160-180 ℃ of reaction 30 min; Removal heating source continued is reacted 30 min and reacted fully fully, and is last, under stirring condition; Solution is cooled to room temperature, gets the nano silver wire emulsion, and preservation is subsequent use;
(2) preparation of gold nanotubes:
The nano silver wire emulsion dilution of above-mentioned preparation is scattered in the ultra-pure water, and making silver concentration is 1mmol/L, ebuillition of heated; In system, add the presoma chlorauric acid solution of a certain amount of gold, the mol ratio of gold chloride and nano silver wire is 1: 3, under the condition of heating, reacts 30min; Behind the centrifuge washing 3 times; Again be scattered in the ultra-pure water, get the gold nanotubes emulsion, preservation is subsequent use;
(3) preparation of gold nanotubes practical application electrode:
The gold nanotubes of preparation is transmitted material as electronics modifies in electrode surface; Concrete operations are for to polish glass-carbon electrode successively with the alumina solution of 0.3 μ m and 0.05 μ m, ultrasonic 5 min in acetone and ultra-pure water successively again after the polishing are at N
2Dry up subsequent usely under the air-flow, the gold nanotubes emulsion 15 μ L that get 0.1mmol/L drip the diameter 3mm glass-carbon electrode surface after handling, and it is subsequent use under infrared lamp, to dry the back;
The application of the gold nanotubes material of said method preparation is prepared gold nanotubes practical application electrode to be used for disposing the KOH solution of ethanol as working electrode, and the oxidation of ethanol reaction is had catalytic performance.
Beneficial effect of the present invention: in the preparation process of gold nanotubes of the present invention, utilize polyol method synthesis of silver nano-wire, thereby utilize the nano silver wire of preparation to obtain gold nanotubes after the purifies and separates with template sacrifice method and Jin Yuan reaction.The gold nanotubes of preparation has better conductive capability, can be further used for catalyst material and analyzing and testing field.
Description of drawings
The electron micrograph of the nano silver wire that Fig. 1 makes.
The electron micrograph of the gold nanotubes that Fig. 2 prepares.
Fig. 3 gold nanotubes is to the catalytic performance of ethanol.The peak of redox shown in Fig. 3 be ethanol under gold nanotubes catalysis, pairing redox peak when carrying out catalytic reaction.At the peak at 0.03V place is the peak that oxidation of ethanol generates acetaldehyde.
Specific embodiments
1 one kinds of gold nanotubes preparation methods of embodiment
(1) the template nano silver wire is synthetic
Measure a certain amount of ethylene glycol, be heated to 160-180 ℃, stablize 5min, to the presoma liquor argenti nitratis ophthalmicus that wherein adds a certain amount of silver, reaction 30 min under 160-180 ℃ of high temperature; After removing heating source, continue reaction 30 min and be cooled to room temperature.
Reaction system is carried out dilution in 1: 5, back centrifuge washing 3 times with acetone.Remove supernatant, the centrifugal product that obtains is scattered in the aqueous solution, normal temperature is preserved subsequent use.
(2) gold nanotubes is synthetic
The nano silver wire dilution of above-mentioned preparation is scattered in the aqueous solution; Making silver concentration is 1mmol/L, ebuillition of heated, the presoma chlorauric acid solution of a certain amount of gold of adding in system; The mol ratio of gold chloride and nano silver wire is 1: 3; Under the condition of heating, react 30min, behind the centrifuge washing 3 times, be scattered in the aqueous solution again.
(3) practical application of gold nanotubes material
The gold nanotubes of preparation is transmitted material as electronics modifies in electrode surface.Concrete operations are for to polish glass-carbon electrode successively with the alumina solution of 0.3 μ m and 0.05 μ m, ultrasonic 5 min in the acetone and the aqueous solution successively again after the polishing.At N
2Dry up subsequent use under the air-flow.The gold nanotubes emulsion 15 μ L that get 0.1mmol/L drip the diameter 3mm glass-carbon electrode surface after handling, and subsequent use after under infrared lamp, drying.
The application of the gold nanotubes material of embodiment 2 said method preparations
The KOH solution of configuration ethanol as working electrode, is investigated the catalytic performance of the gold nanotubes of preparation to ethanol with the electrode of above-mentioned preparation.As shown in Figure 3, the peak of redox shown in Fig. 3 be ethanol under gold nanotubes catalysis, pairing redox peak when carrying out catalytic reaction.At the peak at 0.03V place is the peak that oxidation of ethanol generates acetaldehyde.
Claims (2)
1. a gold nanotubes preparation methods is characterized in that step does, the preparation of (1) nano silver wire, the preparation of the preparation of (2) gold nanotubes and (3) gold nanotubes practical application electrode;
(1) preparation of nano silver wire:
Heated and stirred keeps 5min to 160-180 ℃ after in clean conical flask, adding 40 mL ethylene glycol, adds 0.01mol/L liquor argenti nitratis ophthalmicus 6mL, heats while stirring; Solution colour gradually becomes yellow from faint yellow, after color no longer changes, continues heating and keeps 160-180 ℃ of reaction 30 min; Removal heating source continued is reacted 30 min and reacted fully fully, and is last, under stirring condition; Solution is cooled to room temperature, gets the nano silver wire emulsion, and preservation is subsequent use;
(2) preparation of gold nanotubes:
The nano silver wire emulsion dilution of above-mentioned preparation is scattered in the ultra-pure water, and making silver concentration is 1mmol/L, ebuillition of heated; In system, add the presoma chlorauric acid solution of a certain amount of gold, the mol ratio of gold chloride and nano silver wire is 1: 3, under the condition of heating, reacts 30min; Behind the centrifuge washing 3 times; Again be scattered in the ultra-pure water, get the gold nanotubes emulsion, preservation is subsequent use;
(3) preparation of gold nanotubes practical application electrode:
The gold nanotubes of preparation is transmitted material as electronics modifies in electrode surface; Concrete operations are for to polish glass-carbon electrode successively with the alumina solution of 0.3 μ m and 0.05 μ m, ultrasonic 5 min in acetone and ultra-pure water successively again after the polishing are at N
2Dry up subsequent usely under the air-flow, the gold nanotubes emulsion 15 μ L that get 0.1mmol/L drip the diameter 3mm glass-carbon electrode surface after handling, and it is subsequent use under infrared lamp, to dry the back.
2. the application of the gold nanotubes material of the said method preparation of claim 1, the gold nanotubes practical application electrode that it is characterized in that claim 1 is prepared is used for disposing the KOH solution of ethanol as working electrode, and the oxidation of ethanol reaction is had catalytic performance.
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| CN103302304B (en) * | 2013-06-07 | 2015-07-08 | 上海交通大学 | Preparation method of nickel or nickel alloy nanotube |
| CN103990793B (en) * | 2014-05-09 | 2017-03-29 | 北京华纳高科科技有限公司 | Hollow real wall gold/gold silver nanotube of a kind of high length-diameter ratio and preparation method thereof |
| CN104209534B (en) * | 2014-07-30 | 2016-08-24 | 重庆凌峰橡塑制品有限公司 | A kind of preparation method of FeOOH nanometer rods-gold nano grain hybrid structure |
| CN104259451A (en) * | 2014-09-16 | 2015-01-07 | 南京航空航天大学 | Tubular structure gold nanometer materials and production method thereof |
| CN104493160A (en) * | 2015-01-09 | 2015-04-08 | 江苏大学 | Gold nanorod biotic compound and preparation method and applications thereof |
| CN104874790A (en) * | 2015-06-10 | 2015-09-02 | 苏州冷石纳米材料科技有限公司 | Gold nano material adopting porous tubular hollow structure and preparation method of gold nano material |
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| CN1948414A (en) * | 2006-11-13 | 2007-04-18 | 浙江理工大学 | Method of preparing high performance conductive glue |
| WO2007100811A2 (en) * | 2006-02-24 | 2007-09-07 | The Regents Of The University Of California | Platinum and platinum based alloy nanotubes as electrocatalysts for fuel cells |
| CN101310899A (en) * | 2008-03-18 | 2008-11-26 | 江苏工业学院 | Method for preparing silver nano-wire in large batch |
| CN101576530A (en) * | 2009-05-21 | 2009-11-11 | 北京化工大学 | Method for measuring dopamine by utilizing graphite nano-sheet/Nafion composite film to modify electrode |
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| WO2007100811A2 (en) * | 2006-02-24 | 2007-09-07 | The Regents Of The University Of California | Platinum and platinum based alloy nanotubes as electrocatalysts for fuel cells |
| CN1948414A (en) * | 2006-11-13 | 2007-04-18 | 浙江理工大学 | Method of preparing high performance conductive glue |
| CN101310899A (en) * | 2008-03-18 | 2008-11-26 | 江苏工业学院 | Method for preparing silver nano-wire in large batch |
| CN101576530A (en) * | 2009-05-21 | 2009-11-11 | 北京化工大学 | Method for measuring dopamine by utilizing graphite nano-sheet/Nafion composite film to modify electrode |
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| 黄加乐.银纳米材料和金纳米材料的植物生物质还原制备及应用初探.《中国博士学位论文全文数据库（工程科技Ⅰ辑）》.2009,第6-16页. * |
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