CN107225236A - A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction - Google Patents
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction Download PDFInfo
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Abstract
The present invention relates to a kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, using gold nanorods as core, it can accurately regulate and control longitudinal plasmon absorption peaks of sample, the material of different absorbing properties is obtained according to actual needs；The modification in the middle of excessive need not be carried out to gold nanorods surface stable CTAB, experimental procedure is reduced, has saved cost, improve the yield of sample；The preparation process of sample is simply easily operated, it is not necessary to complicated equipment, it is easy to produce in batches；The Au NR@ZnO core-shell nano composite constructions that the present invention is prepared, multi-functional with photothermal deformation and photocatalysis etc., the stability of gold nanorods can be effectively improved, change the photocatalysis property of nano zinc oxide material, sample has potential application value in biomedical and field of environmental improvement.
Description
Technical field
The present invention relates to chemosynthesis technical field, specifically a kind of gold nanorods/zinc oxide core-shell nano is combined
The preparation method of structure.
Background technology
In recent years, with the enhancing of people's environmental protection consciousness, prepare can effectively degradable organic pollutant performance it is good
Good catalysis material is into one of study hotspot of vast researcher.In numerous catalysis materials, zinc oxide half
Conductor nano material is due to the interest that researcher is caused than larger specific surface area and high light sensitive characteristic.Due to oxidation
Zinc is a kind of semiconductor material with wide forbidden band, therefore main inter-band absorption spectrum is in ultra-violet (UV) band, and the main wave band of solar spectrum
Visible and region of ultra-red is concentrated on, this just limits application of the nano zinc oxide material in photocatalysis field to a certain extent.
Because noble metal nanometer material especially gold nanorods material has an adjustable characteristic of good light absorbs, absorption spectrum from
Can accurately it regulate and control to infrared band.Gold nano-material and nano zinc oxide material are combined and prepares high performance light and urges
Change material into a major challenge of researchers.Xin Wang (J. Phys. Chem. C 2007, 111, 3836-3841)
Etc. the zinc oxide and gold nano grain composite for being prepared for dumbbell shaped.Pragati Fageria（Rsc Advances,
2014, 4(48):294962-24972）Et al. deposited gold nano grain in flower shape zinc oxide nano-material surface, sample increases
Photo-catalysis capability of the zinc oxide under Uv and visible light is added.Mi Wu (Acs Applied Materials &
Interfaces, 2014, 6(17):Gold nano grain 15052-15060) etc. is prepared in zinc oxide nano rod surface reduction,
Obtain hetero-junctions nano composite material.Yiqiang Sun, (Nanoscale, 2016,8,10774-10782) etc. passes through
The charge density on regulation gold nano grain surface is prepared for gold nano grain and zinc oxide（Au@ZnO）Nuclear shell structure nano is combined
Material, observed the enhancing of zinc oxide photocatalysis ability.University Of Ji'nan Yang Ping（CN105215347A）Etc. having invented a kind of oxygen
Change zinc and gold nano grain composite and preparation method thereof, gold nano is deposited in nano zinc oxide material surface reduction
Grain.So far, also not on preparing gold nanorods/zinc oxide using one-step method（Au NR@ZnO）Core-shell nano composite junction
The relevant report of structure material.
The content of the invention
It is nanocrystalline for the above-mentioned gold nanorods superficial growth zinc oxide semi-conductor being difficult in the prior art in CTAB stably
The problem of, the present invention provides a kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared, the mmol/L HAuCl of 5 mL 0.5 are added in a reservoir4Solution and 5 mL 0.2
Mol/L CTAB solution, and stirred with uniform speed, then take 1 mL, 0.01 mol/L of the fresh configuration of frozen water NaBH4It is molten
Liquid, is added to CTAB-Au3+Mixed solution in and stir 2 min rapidly, the seed solution prepared is under the conditions of room temperature lucifuge
2 h are grown, it is standby；
Step 2：Into centrifuge tube, the mol/L CTAB solution of 40 mL 0.1, the mol/L of 400 μ L 0.01 are sequentially added
AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0, after being well mixed, solution
In orange colour；And backward mixed solution adds the mol/L ascorbic acid solutions of 320 μ L 0.1, water white transparency is obtained after shaking up molten
Liquid, is made gold rod growth solution, standby；
Step 3：The gold seeds solution obtained by 10-15 μ L steps one is added into the growth-promoting media obtained by step 2, gold seeds is added
Growth-promoting media after solution needs to stand 12 h at room temperature, standby after the completion of golden rod growth；
Step 4：The gold nanorods for taking the CTAB prepared in 10 mL step 3 stable, centrifugation is removed after supernatant, adds 1 mL
Moisture dissipates；The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, the CTAB for then adding 0.01mol/L is water-soluble
The μ L of liquid 20, backward reaction solution add 0.1mol/L the μ L of sodium hydrate aqueous solution 2；It is eventually adding 100-300 μ L concentration
For the ethanol solution of 0.01mol/L zinc acetylacetonate, reaction system keeps concussion or stirring in adition process；Reaction
1.5 h ~ 2.5h, obtain gold nanorods/zinc oxide core-shell nano composite construction, the wherein thickness of zinc oxide film is 10-30 nm.
The gold seeds solution obtained by 15 μ L steps one is added in the step 3；100 μ L are eventually adding in the step 4
Concentration is the ethanol solution of 0.01 mol/L zinc acetylacetonate, is reacted 1.5 hours, obtains gold nanorods/zinc oxide nucleocapsid and receives
Rice composite construction, the thickness of wherein zinc oxide film is about 10 nm.
The gold seeds solution obtained by 14 μ L steps one is added in the step 3；150 μ L are eventually adding in the step 4
Concentration is the ethanol solution of 0.01 mol/L zinc acetylacetonate, is reacted 2 hours, obtains gold nanorods/zinc oxide core-shell nano
The thickness of composite construction, wherein zinc oxide film is about 15 nm.
The gold seeds solution obtained by 13 μ L steps one is added in the step 3；200 μ L are eventually adding in the step 4
Concentration is the ethanol solution of 0.01 mol/L zinc acetylacetonate, is reacted 2 hours, obtains gold nanorods/zinc oxide core-shell nano
The thickness of composite construction, wherein zinc oxide film is about 20 nm.
The gold seeds solution obtained by 12 μ L steps one is added in the step 3；250 μ L are eventually adding in the step 4
Concentration is the ethanol solution of 0.01 mol/L zinc acetylacetonate, is reacted 2 hours, obtains gold nanorods/zinc oxide core-shell nano
The thickness of composite construction, wherein zinc oxide film is about 25 nm.
The gold seeds solution obtained by 10 μ L steps one is added in the step 3；300 μ L are eventually adding in the step 4
Concentration is the ethanol solution of 0.01 mol/L zinc acetylacetonate, is reacted 2 hours, obtains gold nanorods/zinc oxide core-shell nano
The thickness of composite construction, wherein zinc oxide film is about 30 nm.
Beneficial effects of the present invention：
The preparation method of the gold nanorods that the present invention is provided/zinc oxide core-shell nano composite construction, can be with using gold nanorods as core
Longitudinal plasmon absorption peaks of accurate regulation and control sample, obtain the material of different absorbing properties according to actual needs；Need not
Modification in the middle of excessive is carried out to gold nanorods surface stable CTAB, experimental procedure is reduced, has saved cost, is improved
The yield of sample；The preparation process of sample is simply easily operated, it is not necessary to complicated equipment, it is easy to produce in batches；The present invention
The Au NR@ZnO core-shell nano composite constructions prepared, the multi-functional with photothermal deformation and photocatalysis etc. can be carried effectively
The stability of high gold nanorods, changes the photocatalysis property of nano zinc oxide material, sample is in biomedical and environmental improvement neck
Domain has potential application value.
Brief description of the drawings
Fig. 1 inventive samples technology of preparing route maps；
The SEM figures of gold nanorods stable Fig. 2 CTAB of the present invention；
Fig. 3 oxide coated by zinc gold nanorods of the present invention（Au/ZnO-a）SEM figure；
Fig. 4 oxide coated by zinc gold nanorods of the present invention（Au/ZnO-b）SEM figure；
Fig. 5 gold nanorods of the present invention（Au NR）With gold nanorods/zinc oxide of the different shell thicknesses of cladding（Au/ZnO-a,
Au/ZnO-b,）The UV, visible light extinction spectra figure of core-shell nano composite construction.
Embodiment
With reference to embodiment, the present invention is further elaborated.
As shown in Figure 1：For inventive samples technology of preparing route map；The present invention is by improving experimental method, accurate control
The pH value of experiment parameter processed, such as reaction solution, CTAB concentration etc., it is only necessary to which single stepping just can be on gold nanorods surface
The zinc oxide shell coated completely is prepared, Au NR@ZnO core-shell nano composite constructions are ultimately formed.The ZnO shells of cladding
Layer can play a very good protection to gold nanorods, effectively improve the heat endurance of gold nanorods.Used in the present invention
Gold nanorods are to use common gold seeds method, and the Surface coating of the gold nanorods prepared has substantial amounts of cetyl three
Methyl bromide ammonium（CTAB）Surfactant.We control the CTAB concentration on gold nanorods surface by the way of centrifugation first,
Then under weak basic condition, by the hydrolysis of zinc acetylacetonate, the gold nanorods composite construction of oxide coated by zinc is prepared.
One of key problem in technology point of the present invention is accurately to control the CTAB on gold nanorods surface dense by the mode such as centrifugation and later stage addition
Degree, suitable CTAB concentration is successfully to prepare Au NR@ZnO core-shell nano composite construction premises.The present invention key problem in technology point it
Two be acetylacetone,2,4-pentanedione zinc solution is slowly hydrolyzed by the way of being slowly added, and slow hydrolysis ensure that hydrolysate preferentially exists
Gold nanorods surface forms shell rather than independent nucleation.The thickness of ZnO shells is mainly by controlling addition zinc acetylacetonate molten
The amount of liquid is controlled.
Embodiment 1:
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared first, and the mmol/LHAuCl of 5 mL 0.5 are added in vial4Solution and 5 mL
0.2 mol/L CTAB solution, and stirred with uniform speed.Then 1 mL is taken with 0.01 mol/L's of the fresh configuration of frozen water
NaBH4Solution, is added to CTAB-Au3+Mixed solution in and rapidly stir 2 minutes, the seed solution prepared is kept away in room temperature
Being grown under optical condition can use after 2 h；
Step 2：Grow liquid and preparation method thereof：In 50 mL plastic centrifuge tubes, the mol/L CTAB solution of 40 mL 0.1 is sequentially added,
400 μL 0.01 mol/L AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl of 800 μ L 1.0 are molten
Liquid, after being well mixed, solution is in orange colour.And backward mixed solution adds the mol/L ascorbic acid of 320 μ L 0.1（AA）It is molten
Liquid, colourless transparent solution is obtained after gently shaking up, and gold rod growth solution is made；
Step 3：The gold seeds solution obtained by 15 μ L steps one is added into the growth-promoting media obtained by step 2, gold seeds is added
Growth-promoting media after solution needs to stand 12 h at room temperature, could be used after the completion of the growth of golden rod；
Step 4：In the gold nanorods for taking the cetyl trimethylammonium bromide prepared in 10 mL step 3 stable, centrifugation removal
After clear liquid, add 1 mL deionized waters and disperse, take the gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture to dissipate, Ran Houjia
Enter the 0.01 mol/L μ L of the cetyl trimethylammonium bromide aqueous solution 20, backward reaction solution add 0.1 mol/L hydrogen
The μ L of aqueous solution of sodium oxide 2；The ethanol solution for the zinc acetylacetonate that 100 μ L concentration are 0.01 mol/L is eventually adding, was added
Reaction system keeps concussion or magnetic agitation state in journey；Reaction 1.5 hours, obtains gold nanorods/zinc oxide core-shell nano and answers
Structure is closed, the thickness of wherein zinc oxide film is about 10 nm.Fig. 2 is the SEM figures for the gold nanorods that embodiment 1 is obtained.Fig. 3 and Fig. 4
It is that the ethanol solution of zinc acetylacetonate adds 100 μ L and 150 μ L experimental result respectively, is respectively labeled as Au@ZnO-a and Au@
ZnO-b, the thickness of zinc oxide shell is about 10nm and 15nm.Fig. 5 is corresponding gold nanorods, Au@ZnO-a and Au@ZnO-b samples
The UV, visible light extinction spectra figure of product.
Embodiment 2:
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared first, and the m mol/L HAuCl of 5 mL 0.5 are added in vial4Solution and 5 mL
0.2 mol/L CTAB solution, and stirred with uniform speed, 1 mL is then taken with 0.01 mol/L's of the fresh configuration of frozen water
NaBH4Solution, is added to CTAB-Au3+Mixed solution in and rapidly stir 2 minutes, the seed solution prepared is kept away in room temperature
Being grown under optical condition can use after 2 h；
Step 2：In 50 mL plastic centrifuge tubes, the mol/L CTAB solution of 40 mL 0.1,400 μ L 0.01 are sequentially added
mol/L AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0 are well mixed
Afterwards, solution is in orange colour.And backward mixed solution adds the mol/L ascorbic acid of 320 μ L 0.1（AA）Solution, gently shakes up
After obtain colourless transparent solution, gold rod growth solution is made；
Step 3：The gold seeds solution obtained by 14 μ L steps one is added into growth-promoting media obtained by step 2, gold seeds solution is added
Growth-promoting media afterwards needs to stand 12 h at room temperature, could be used after the completion of the growth of golden rod；
Step 4：In the gold nanorods for taking the cetyl trimethylammonium bromide prepared in 10 mL step 3 stable, centrifugation removal
After clear liquid, add 1 mL deionized waters and disperse；The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, Ran Houjia
Enter the 0.01 mol/L μ L of the cetyl trimethylammonium bromide aqueous solution 20, backward reaction solution add 0.1 mol/L hydrogen
The μ L of aqueous solution of sodium oxide 2；It is eventually adding the ethanol solution for the zinc acetylacetonate that 150 μ L concentration are 0.01 mol/L, adition process
Middle reaction system keeps concussion or magnetic agitation state；Reaction 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 15 nm.
Embodiment 3:
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared first, and the m mol/L HAuCl of 5 mL 0.5 are added in vial4Solution and 5 mL
0.2 mol/L CTAB solution, and stirred with uniform speed, 1 mL is then taken with 0.01 mol/L's of the fresh configuration of frozen water
NaBH4Solution, is added to CTAB-Au3+Mixed solution in and rapidly stir 2 minutes, the seed solution prepared is kept away in room temperature
Being grown under optical condition can use after 2 h；
Step 2：In 50 mL plastic centrifuge tubes, the mol/L CTAB solution of 40 mL 0.1,400 μ L 0.01 are sequentially added
mol/L AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0 are well mixed
Afterwards, solution is in orange colour.And backward mixed solution adds the mol/L ascorbic acid of 320 μ L 0.1（AA）Solution, gently shakes up
After obtain colourless transparent solution, gold rod growth solution is made；
Step 3：The gold seeds solution obtained by 13 μ L steps one is added into the growth-promoting media obtained by step 2.Add gold seeds molten
Growth-promoting media after liquid needs to stand 12 h at room temperature, could be used after the completion of the growth of golden rod；
Step 4：In the gold nanorods for taking the cetyl trimethylammonium bromide prepared in 10 mL step 3 stable, centrifugation removal
After clear liquid, add 1 mL deionized waters and disperse.The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, Ran Houjia
Enter the 0.01 mol/L μ L of the cetyl trimethylammonium bromide aqueous solution 20.Backward reaction solution add 0.1 mol/L hydrogen
The μ L of aqueous solution of sodium oxide 2；It is eventually adding the ethanol solution for the zinc acetylacetonate that 200 μ L concentration are 0.01 mol/L, adition process
Middle reaction system keeps concussion or magnetic agitation state；Reaction 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 20 nm.
Embodiment 4:
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared first, and the m mol/L HAuCl of 5 mL 0.5 are added in vial4Solution and 5 mL
0.2 mol/L CTAB solution, and stirred with uniform speed.Then 1 mL is taken with 0.01 mol/L's of the fresh configuration of frozen water
NaBH4Solution, is added to CTAB-Au3+Mixed solution in and rapidly stir 2 minutes.The seed solution prepared is kept away in room temperature
Being grown under optical condition can use after 2 h；
Step 2：In 50 mL plastic centrifuge tubes, the mol/L CTAB solution of 40 mL 0.1,400 μ L 0.01 are sequentially added
mol/L AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0 are well mixed
Afterwards, solution is in orange colour.And backward mixed solution adds the mol/L ascorbic acid of 320 μ L 0.1（AA）Solution, gently shakes up
After obtain colourless transparent solution, gold rod growth solution is made；
Step 3：The gold seeds solution obtained by 12 μ L steps one is added into the growth-promoting media obtained by step 2.Add gold seeds molten
Growth-promoting media after liquid needs to stand 12 h at room temperature, could be used after the completion of the growth of golden rod.
Step 4：The gold nanorods for taking the cetyl trimethylammonium bromide prepared in 10 mL step 3 stable, centrifugation is gone
After supernatant, add 1 mL deionized waters and disperse.The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, so
The 0.01 mol/L μ L of the cetyl trimethylammonium bromide aqueous solution 20 are added afterwards.Backward reaction solution add 0.1 mol/L
The μ L of sodium hydrate aqueous solution 2；The ethanol solution for the zinc acetylacetonate that 250 μ L concentration are 0.01 mol/L is eventually adding, is added
During reaction system keep concussion or magnetic agitation state；Reaction 2 or so, obtains gold nanorods/zinc oxide core-shell nano and answers
Structure is closed, the thickness of wherein zinc oxide film is about 25 nm.
Embodiment 5:
A kind of preparation method of gold nanorods/zinc oxide core-shell nano composite construction, comprises the following steps：
Step one：Gold seeds solution is prepared first, and the m mol/L HAuCl of 5 mL 0.5 are added in vial4Solution and 5 mL
0.2 mol/L CTAB solution, and stirred with uniform speed.Then 1 mL is taken with 0.01 mol/L's of the fresh configuration of frozen water
NaBH4Solution, is added to CTAB-Au3+Mixed solution in and rapidly stir 2 minutes.The seed solution prepared is kept away in room temperature
Being grown under optical condition can use after 2 h；
Step 2：In 50 mL plastic centrifuge tubes, the mol/L CTAB solution of 40 mL 0.1,400 μ L 0.01 are sequentially added
mol/L AgNO3Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0 are well mixed
Afterwards, solution is in orange colour.And backward mixed solution adds the mol/L ascorbic acid of 320 μ L 0.1（AA）Solution, gently shakes up
After obtain colourless transparent solution, gold rod growth solution is made；
Step 3：The gold seeds solution obtained by 10 μ L steps one is added into the growth-promoting media obtained by step 2, gold seeds is added molten
Growth-promoting media after liquid needs to stand 12 h at room temperature, could be used after the completion of the growth of golden rod.
Step 4：The gold nanorods for taking the cetyl trimethylammonium bromide prepared in 10 mL step 3 stable, centrifugation is gone
After supernatant, add 1 mL deionized waters and disperse.The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, so
The 0.01 mol/L μ L of the cetyl trimethylammonium bromide aqueous solution 20 are added afterwards.Backward reaction solution add 0.1 mol/L
The μ L of sodium hydrate aqueous solution 2；The ethanol solution for the zinc acetylacetonate that 300 μ L concentration are 0.01 mol/L is eventually adding, is added
During reaction system keep concussion or magnetic agitation state；Reaction 2 hours, obtains gold nanorods/zinc oxide core-shell nano and answers
Structure is closed, the thickness of wherein zinc oxide film is about 30 nm.
Claims (6)
1. the preparation method of a kind of gold nanorods/zinc oxide core-shell nano composite construction, it is characterised in that comprise the following steps：
Step one：Gold seeds solution is prepared, the mmol/L HAuCl of 5 mL 0.5 are added in a reservoir4Solution and 5 mL 0.2
Mol/L CTAB solution, and stirred with uniform speed, then take 1 mL, 0.01 mol/L of the fresh configuration of frozen water NaBH4It is molten
Liquid, is added to CTAB-Au3+Mixed solution in and stir 2 min rapidly, the seed solution prepared is under the conditions of room temperature lucifuge
2 h are grown, it is standby；
Step 2：Into centrifuge tube, the mol/L CTAB solution of 40 mL 0.1, the mol/L AgNO of 400 μ L 0.01 are sequentially added3
Solution, the mol/L HAuCl of 2 mL 0.014Solution, the mol/L HCl solutions of 800 μ L 1.0, after being well mixed, solution is in tangerine
Yellow；And backward mixed solution adds the mol/L ascorbic acid solutions of 320 μ L 0.1, colourless transparent solution is obtained after shaking up,
Gold rod growth solution is made, it is standby；
Step 3：The gold seeds solution obtained by 10-15 μ L steps one is added into the growth-promoting media obtained by step 2, gold seeds is added
Growth-promoting media after solution needs to stand 12 h at room temperature, standby after the completion of golden rod growth；
Step 4：The gold nanorods for taking the CTAB prepared in 10 mL step 3 stable, centrifugation is removed after supernatant, adds 1 mL
Moisture dissipates；The gold nanorods after the 75 above-mentioned concentrations of μ L, plus 400 μ L moisture are taken to dissipate, the CTAB for then adding 0.01mol/L is water-soluble
The μ L of liquid 20, backward reaction solution add 0.1mol/L the μ L of sodium hydrate aqueous solution 2；It is eventually adding 100-300 μ L concentration
For the ethanol solution of 0.01mol/L zinc acetylacetonate, reaction system keeps concussion or stirring in adition process；Reaction
1.5 h ~ 2.5h, obtain gold nanorods/zinc oxide core-shell nano composite construction, the wherein thickness of zinc oxide film is 10-30 nm.
2. the preparation method of gold nanorods as claimed in claim 1/zinc oxide core-shell nano composite construction, it is characterised in that：
The gold seeds solution obtained by 15 μ L steps one is added in the step 3；100 μ L concentration are eventually adding in the step 4 is
The ethanol solution of 0.01 mol/L zinc acetylacetonate, reacts 1.5 hours, obtains gold nanorods/zinc oxide core-shell nano and is combined
The thickness of structure, wherein zinc oxide film is about 10 nm.
3. the preparation method of gold nanorods as claimed in claim 1/zinc oxide core-shell nano composite construction, it is characterised in that：
The gold seeds solution obtained by 14 μ L steps one is added in the step 3；150 μ L concentration are eventually adding in the step 4 is
The ethanol solution of 0.01 mol/L zinc acetylacetonate, reacts 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 15 nm.
4. the preparation method of gold nanorods as claimed in claim 1/zinc oxide core-shell nano composite construction, it is characterised in that：
The gold seeds solution obtained by 13 μ L steps one is added in the step 3；200 μ L concentration are eventually adding in the step 4 is
The ethanol solution of 0.01 mol/L zinc acetylacetonate, reacts 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 20 nm.
5. the preparation method of gold nanorods as claimed in claim 1/zinc oxide core-shell nano composite construction, it is characterised in that：
The gold seeds solution obtained by 12 μ L steps one is added in the step 3；250 μ L concentration are eventually adding in the step 4 is
The ethanol solution of 0.01 mol/L zinc acetylacetonate, reacts 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 25 nm.
6. the preparation method of gold nanorods as claimed in claim 1/zinc oxide core-shell nano composite construction, it is characterised in that：
The gold seeds solution obtained by 10 μ L steps one is added in the step 3；300 μ L concentration are eventually adding in the step 4 is
The ethanol solution of 0.01 mol/L zinc acetylacetonate, reacts 2 hours, obtains gold nanorods/zinc oxide core-shell nano composite junction
The thickness of structure, wherein zinc oxide film is about 30 nm.
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| CN110478482A (en) * | 2018-05-15 | 2019-11-22 | 南京邮电大学 | A kind of preparation method of york-shell structure gold nanorods@poly-dopamine multimode images nano-probe |
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