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Method for in-situ synthesis of montmorillonite/gold nanorod composite materials

A technology of gold nanorods and composite materials, which is applied in the field of metal powder processing, can solve the problems of uneven distribution of nanoparticles and low loading of nanoparticles, and achieve the effect of strong repeatability, short time consumption, and green and mild reaction conditions

Pending Publication Date: 2019-12-20
TONGJI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, although many researchers attach nanoparticles such as gold nanoparticles, silver, cuprous oxide and copper sulfide to other sheet compounds such as graphene oxide and its derivatives, most of them use higher than normal temperature or laser irradiation. method, and the loading of nanoparticles is low, and the distribution of attached nanoparticles is not uniform

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  • Method for in-situ synthesis of montmorillonite/gold nanorod composite materials
  • Method for in-situ synthesis of montmorillonite/gold nanorod composite materials
  • Method for in-situ synthesis of montmorillonite/gold nanorod composite materials

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Embodiment 1

[0020] A method for in-situ synthesis of montmorillonite / gold nanorod composite material, the steps are as follows:

[0021] Step 1, add 10 mL of montmorillonite solution with a concentration of 1.0 mg / mL to 50 mL of cetyltrimethylammonium bromide aqueous solution with a concentration of 0.2 mol / L, mix well, then add 3.125 mL with a concentration of 24 mmol / L chloroauric acid aqueous solution and 3mL concentration of 4mmol / L silver nitrate aqueous solution to obtain mixed solution A;

[0022] Step 2, add 1.2mL of ascorbic acid aqueous solution with a concentration of 43mmol / L to the mixed solution A, add 1m gold seed solution after the solution becomes colorless and transparent, and let it stand at a constant temperature of 28°C for 9 hours to obtain the mixed solution B;

[0023] Step 3, centrifuge the mixed solution B at 12000rpm for 20min, take the precipitate, and resuspend the precipitate in ultrapure water to obtain the montmorillonite / gold nanorod composite material.

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Abstract

The invention provides a method for in-situ synthesis of montmorillonite / gold nanorod composite materials, and belongs to the field of metal powder processing. The method for in-situ synthesis of themontmorillonite / gold nanorod composite materials comprises the following steps: montmorillonite water solution is fed in hexadecyl trimethyl ammonium bromide water solution for uniform mixing; chloroauric acid water solution and silver nitrate water solution are fed to obtain mixed liquid A; ascorbic acid water solution is fed in the mixed liquid A; after the solution becomes colorless and transparent, gold seed liquid is fed for constant-temperature standing by 6-12 hours to obtain mixed liquid B; the mixed liquid B is centrifuged; and precipitates are taken and suspended in water to obtain finished products. The method is green and mild in reaction condition, simple in operation, short in consumed time, high in repeatability, high in material load and uniform in distribution of gold nanorods, and achieves broad prospect on the aspect of realizing integration of diagnosis and treatment through improvement of photothermal treatment and subsequent antibody modification and medicine carrying.

Description

technical field [0001] The invention relates to a method for synthesizing composite materials, in particular to a method for in-situ synthesis of montmorillonite / gold nanorod composite materials, belonging to the field of metal powder processing. Background technique [0002] Since the discovery of montmorillonite, its excellent physical and chemical properties have attracted widespread attention. Due to its high specific surface area and good thermal and electrical properties, gold nanorods / montmorillonite is used as a photothermal reagent. After multiple cycles of illumination, on the one hand, due to the good thermal stability of montmorillonite, the The morphology will not change; on the other hand, the advantages of high specific surface area and easy modification of montmorillonite can also better realize the functions of modifying antibodies and loading drugs, so as to realize the integration of diagnosis and treatment. [0003] At present, although many researchers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00
CPCB22F9/24B22F1/07B22F1/054
Inventor 陈炳地高明辉罗辞辞朱玉倩
Owner TONGJI UNIV
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