CN115055672A - Method for preparing coral-shaped gold nano/carbon nano tube composite material - Google Patents
Method for preparing coral-shaped gold nano/carbon nano tube composite material Download PDFInfo
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- CN115055672A CN115055672A CN202210680551.1A CN202210680551A CN115055672A CN 115055672 A CN115055672 A CN 115055672A CN 202210680551 A CN202210680551 A CN 202210680551A CN 115055672 A CN115055672 A CN 115055672A
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000010931 gold Substances 0.000 title claims abstract description 28
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 22
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000002071 nanotube Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229920006316 polyvinylpyrrolidine Polymers 0.000 claims abstract description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 7
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 235000014653 Carica parviflora Nutrition 0.000 claims description 5
- 241000243321 Cnidaria Species 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 abstract description 9
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 239000002048 multi walled nanotube Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 230000005622 photoelectricity Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/0545—Dispersions or suspensions of nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/0553—Complex form nanoparticles, e.g. prism, pyramid, octahedron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/168—After-treatment
- C01B32/174—Derivatisation; Solubilisation; Dispersion in solvents
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- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to a method for preparing a coral-shaped gold nano/carbon nano tube composite material. The method comprises the following specific steps: chloroauric acid and polyvinylpyrrolidone K-30 are used as raw materials, and are reduced by sodium borohydride to synthesize the coral-shaped gold nano-particles on the surface of the carbon nano-tube in situ. The coral-shaped gold nano/multi-walled carbon nanotube composite material prepared by the invention has the characteristics of unique gold nano shape, large specific surface area and uniform distribution, the reaction conditions are green and safe, the operation steps are simple and quick, and the coral-shaped gold nano/multi-walled carbon nanotube composite material can be widely applied to the fields of biosensing, photoelectricity, catalysis and the like.
Description
Technical Field
The invention relates to a method for preparing a coral-shaped gold nano/carbon nano tube composite material, belonging to the field of nanotechnology.
Background
Gold is a chemically very stable metal element, but nano-sized gold has unique biocompatibility, high electron density and catalytic properties due to its special structure and morphology. Gold nanoparticles have been widely used in the fields of biomedicine, electrochemical sensing, catalysis, etc. The optical, electrical and thermal properties of the gold nanoparticles are closely related to the morphology of the gold nanoparticles. The photo-thermal performance and the electric field intensity of the gold particles are regulated and controlled by controlling the morphology of the gold particles, and the gold particles are further used for photo-thermal treatment of cancers, biosensors and surface plasmon resonance enhanced spectroscopy. The carbon nano tube has the characteristics of high specific surface area, high conductivity and the like, can be used as an ideal carrier of the nano particles due to the fact that the carbon nano tube is rich in oxidation functional groups after surface modification, plays a role in stably dispersing the nano particles, and can further improve the catalytic performance of the carbon nano tube by utilizing the synergistic effect of the carbon nano tube and the nano particles. Therefore, the invention is particularly important for synthesizing the gold nano/carbon nano tube composite material with controllable and uniform appearance and good dispersibility, which is green, safe, simple to operate, quick and efficient.
Disclosure of Invention
Aiming at the requirement of controlling and synthesizing the shape of the gold nano material, the invention aims to provide a method for preparing a coral-shaped gold nano/carbon nano tube composite material.
The invention provides a preparation method of a coral-shaped gold nano/carbon nano tube composite material, which comprises the following specific steps:
(1) weighing 3.5mg of carbon nano tube, adding into 18mL of deionized water, and performing 240W ultrasonic dispersion for 30 min; sequentially adding 4.5-5.5mg of polyvinylpyrrolidone K-30 and 240L of chloroauric acid solution with the molar concentration of 0.05M, and uniformly stirring;
(2) heating the solution prepared in the step (1) to 85-95 ℃, adding 150L of sodium borohydride solution with the molar concentration of 0.3M, stirring and reacting for 10-30 min;
(3) and (3) centrifuging the product obtained in the step (2) at 11000rpm for 15min, removing supernatant, washing with deionized water for three times, and centrifuging and precipitating to obtain the final product.
Drawings
FIG. 1 is a transmission electron microscope image of coral-like gold nano/carbon nanotube composite material
FIG. 2 is a transmission electron microscope image of coral gold nanoparticles
Detailed Description
The present invention is further illustrated by the following examples.
Example 1:
(1) weighing 3.5mg of carbon nano tube, adding into 18mL of deionized water, and performing 240W ultrasonic dispersion for 30 min; sequentially adding 4.5mg of polyvinylpyrrolidone K-30 and 240L of chloroauric acid solution with the molar concentration of 0.05M, and uniformly stirring;
(2) heating the solution prepared in the step (1) to 95 ℃, adding 150L of sodium borohydride solution with the molar concentration of 0.3M, stirring and reacting for 10 min;
(3) and (3) centrifuging the product obtained in the step (2) at 11000rpm for 15min, removing supernatant, washing with deionized water for three times, and centrifuging and precipitating to obtain the final product.
FIGS. 1 and 2 are transmission electron micrographs of the gold nano/carbon nanotube composite material in the shape of coral. From the figure, the gold nano-meter is in a coral shape, the diameter is 10-15nm, and a space network structure is formed between the carbon nano-meter and the gold nano-meter.
Example 2:
(1) weighing 3.5mg of carbon nano tube, adding into 18mL of deionized water, and performing 240W ultrasonic dispersion for 30 min; sequentially adding 5.5mg of polyvinylpyrrolidone K-30 and 240L of chloroauric acid solution with the molar concentration of 0.05M, and uniformly stirring;
(2) heating the solution prepared in the step (1) to 85 ℃, adding 150L of sodium borohydride solution with the molar concentration of 0.3M, stirring and reacting for 30 min;
(3) and (3) centrifuging the product obtained in the step (2) at 11000rpm for 15min, removing supernatant, washing with deionized water for three times, and centrifuging and precipitating to obtain the final product.
The results were similar to those of example 1.
Example 3:
(1) weighing 3.5mg of carbon nano tube, adding into 18mL of deionized water, and performing 240W ultrasonic dispersion for 30 min; sequentially adding 5.0mg of polyvinylpyrrolidone K-30 and 240L of chloroauric acid solution with the molar concentration of 0.05M, and uniformly stirring;
(2) heating the solution prepared in the step (1) to 90 ℃, adding 150L of sodium borohydride solution with the molar concentration of 0.3M, stirring and reacting for 20 min;
(3) and (3) centrifuging the product obtained in the step (2) at 11000rpm for 15min, removing supernatant, washing with deionized water for three times, and centrifuging and precipitating to obtain the final product.
The results were similar to those of example 1.
Claims (4)
1. A method for preparing a coral-shaped gold nano/carbon nano tube composite material is characterized by comprising the following specific steps:
(1) weighing 3.5mg of carbon nano tube, adding into 18mL of deionized water, and performing 240W ultrasonic dispersion for 30 min; sequentially adding a certain amount of polyvinylpyrrolidone K-30 and 240 mu L of chloroauric acid solution with the molar concentration of 0.05M, and uniformly stirring;
(2) heating the solution prepared in the step (1) to a certain temperature, adding a sodium borohydride solution with a quantitative molar concentration of 0.3M, stirring, and reacting for 10-30 min;
(3) and (3) centrifuging the product obtained in the step (2) at 11000rpm for 15min, removing supernatant, washing with deionized water for three times, and centrifuging and precipitating to obtain the final product.
2. The method for preparing gold nano/carbon nano tube composite material in coral shape as claimed in claim 1, wherein the quantitative amount of polyvinylpyrrolidone K-30 in step (1) is 4.5-5.5 mg.
3. The method as claimed in claim 1, wherein the heating in step (2) is carried out at a temperature of 85-95 ℃.
4. The method for preparing gold nano/carbon nano tube composite material in coral form as claimed in claim 1, wherein the quantitative sodium borohydride solution with 0.3M molar concentration in step (2) is 150 μ L.
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| CN202210680551.1A CN115055672B (en) | 2022-06-15 | 2022-06-15 | Method for preparing coral-shaped gold nano/carbon nano tube composite material |
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