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Method for synthesizing gold nano-rod/graphene oxide composite material with one-pot process

A technology of gold nanorods and composite materials, applied in the nano field, can solve the problems of cumbersome operation and long time consumption, and achieve the effect of simple operation, short time consumption, green and mild reaction conditions

Active Publication Date: 2016-07-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a preparation method is not only cumbersome to operate, but also takes a long time.

Method used

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  • Method for synthesizing gold nano-rod/graphene oxide composite material with one-pot process
  • Method for synthesizing gold nano-rod/graphene oxide composite material with one-pot process
  • Method for synthesizing gold nano-rod/graphene oxide composite material with one-pot process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Weigh an appropriate amount of graphene oxide and grind it, mix the ground 1mg graphene oxide with 0.1g polystyrene sodium sulfonate polymer solution for ultrasonic reaction (500-1000W, 30min), and then centrifuge, Redisperse the supernatant in 0.1 mL of water;

[0016] (2) Take 5mL of cetyltrimethylammonium bromide solution (0.2M), 625μL of chloroauric acid solution (0.008M), 3.975mL of deionized water, step (1) polymer-modified graphene oxide Solution, 300uL silver nitrate (0.004M), 12uL concentrated hydrochloric acid, 75uL ascorbic acid (85.8mM), 7.5uL sodium borohydride solution (0.01M) mixed and shaken for 30 seconds, kept at 25°C for 12h;

[0017] (3) Centrifuge the product obtained in step (2) at high speed (14000rpm, 20min), and redisperse the centrifuged substrate in water to obtain the final product.

[0018] figure 1 , figure 2 with image 3 It is a transmission electron microscope photograph of the prepared gold nanorod / graphene composite material,...

Embodiment 2

[0020] (1) Weigh an appropriate amount of graphene oxide and grind it, mix the ground 0.1mg graphene oxide with 0.1g polystyrene sodium sulfonate polymer solution for ultrasonic reaction (500-1000W, 30min), and then centrifuge , redisperse the supernatant in 1 mL of water;

[0021] (2) Take 5mL of cetyltrimethylammonium bromide solution (0.2M), 625μL of chloroauric acid solution (0.008M), 3.975mL of deionized water, the graphene oxide solution product of step (1), 300uL Silver nitrate (0.004M), 12uL concentrated hydrochloric acid, 75uL ascorbic acid (85.8mM), 7.5uL sodium borohydride solution (0.01M) were mixed and shaken for 30 seconds, and kept at a constant temperature of 30°C for 12h;

[0022] (3) Centrifuge the product obtained in step (2) at high speed (14000rpm, 20min), and redisperse the centrifuged substrate in water to obtain the final product.

[0023] The result is similar to Example 1.

Embodiment 3

[0025] (1) Weigh an appropriate amount of graphene oxide and grind it, mix the ground 0.1mg graphene oxide with 0.1g polystyrene sodium sulfonate polymer solution for ultrasonic reaction (500-1000W, 30min), and then centrifuge , redisperse the supernatant in 1 mL of water;

[0026] (2) Take 5mL of cetyltrimethylammonium bromide solution (0.2M), 625μL of chloroauric acid solution (0.008M), 3.975mL of deionized water, the graphene oxide solution product of step (1), 300uL Silver nitrate (0.004M), 12uL concentrated hydrochloric acid, 75uL ascorbic acid (85.8mM), 7.5uL sodium borohydride solution (0.01M) were mixed and shaken for 30 seconds, and kept at 25°C for 4 hours;

[0027] (3) Centrifuge the product obtained in step (2) at high speed (14000rpm, 20min), and redisperse the centrifuged substrate in water to obtain the final product.

[0028] The result is similar to Example 1.

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Abstract

The invention relates to a method for synthesizing a gold nano-rod / graphene oxide composite material with a one-pot process. The method comprises the specific steps: mixing sodium polystyrene sulfonate modified graphene oxide with a growth solution used for the growth of gold nano-rods, and storing for a period of time at a constant temperature. The method provided by the invention is environment-friendly and moderate in reaction conditions, simple to operate, short in consumed time and strong in repeatability; the gold nano-rod / graphene oxide composite material prepared by the method has the characteristics of high loading amount and uniform distribution of the gold nano-rods, and has a wide prospect on the aspects of improving the photo-thermal therapy efficiency, and modifying an antibody and a loaded drug subsequently so as to realize diagnosis-therapy integration.

Description

technical field [0001] The invention relates to a method for preparing a gold nanorod / graphene oxide composite material by one-pot synthesis, and belongs to the field of nanotechnology. Background technique [0002] Since graphene was discovered, its excellent physical and chemical properties have attracted widespread attention. Due to its high specific surface area and good thermal and electrical properties, researchers hope to solve the problem of easy agglomeration of nanoparticles themselves by synthesizing stable nanoparticles / graphene composites, and at the same time realize the functional integration of nanoparticles and graphene. complementary or synergistic. For example, gold nanoparticles / graphene is used as a photothermal reagent, and gold nanoparticles on graphene will not agglomerate; in addition, after exposure to light, the morphology of gold nanorods will not change due to the good thermal and electrical conductivity of graphene . Studies have shown that g...

Claims

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Application Information

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IPC IPC(8): B22F9/22B22F1/02B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/22B22F1/17
Inventor 陈炳地孙兵妹朱欢欢姚爱华
Owner TONGJI UNIV
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