A kind of preparation method of gold nanoflowers in ionic liquid aqueous solution

An ionic liquid, gold nanoflower technology, applied in nanotechnology, nanotechnology, metal processing equipment and other directions, can solve the problems of cumbersome preparation of gold nanoflowers, differences in morphology and size, complex synthesis process, etc., and achieve elongated reduction. The effect of the process, the reduction process is slow, and the preparation process steps are simple

Active Publication Date: 2021-10-01
HENAN UNIV OF SCI & TECH
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Problems solved by technology

However, the original synthesis method has disadvantages such as expensive equipment, harsh reaction conditions, complex synthesis process or excessive use of organic reagents.
For example, the patent (CN201310173140.4) reports the preparation method of gold nanoflowers, but this method needs to add buffer to adjust the pH value of the solution, and also needs to add hydrogen peroxide (which has a strong oxidation and corrosion effect), polyphenols, etc. The operation is cumbersome and the post-processing is troublesome; in the preparation method of gold nanoflowers (CN201610251906.X) reported in addition, it is necessary to synthesize gold seeds at two different temperatures first, and in the process of using gold seeds to synthesize gold nanoflowers, it is also necessary to Add ethanolamine (organic reagent) under stirring, use sodium hydroxide to adjust the pH of the solution, etc.
In the reported preparation method of gold nanoflowers (CN201611174558.7), although ionic liquid is also used, it needs to interact with graphene, and its shape and size are also different from those of the gold nanoflowers synthesized in the present invention. difference
In addition, these operations make the process of preparing gold nanoflowers rather cumbersome

Method used

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  • A kind of preparation method of gold nanoflowers in ionic liquid aqueous solution
  • A kind of preparation method of gold nanoflowers in ionic liquid aqueous solution
  • A kind of preparation method of gold nanoflowers in ionic liquid aqueous solution

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preparation example Construction

[0024] A method for preparing gold nanopic in an ionic liquid aqueous solution comprising the step of: mixing the ionic liquid aqueous solution with a chloridate solution, distilled water to prepare a mixture, after which a mixture is heated with vitamin C, the resulting reaction After the mixture is separated from the center, it has the finished gold nanopa.

[0025] Method for preparing an ionic liquid aqueous solution of gold nanoma, including the following steps:

[0026] Step 1, taking triethylene glycol monomethyl ether group-methylene dimethyl bromide ionic liquid is added to distilled water, formulated into an ionic liquid aqueous solution having a molar concentration of 0.5 mol / L or is formulated into an experiment. Liquid concentrations, as long as the ionic liquid concentration required for the experiment is constant, spare;

[0027] Step 2, the chlorine acid was weighed into distilled water, formulated into a molar concentration of 0.05-0.1 mol / L, a solution, spare...

Embodiment 1

[0034] 1) First formulate triethylene glycol monomethyl hydroxyl dimethyl bromide ion liquid aqueous solution. A certain amount of triethylene glycol monomethyl ether group-oxyethyl dimethyl bromide ionic liquid is sued, and the concentration of ionic liquid in water is 0.5 mol / L in the water. The concentration of ionic liquid solution used below was 0.5 mol / L.

[0035] 2) Use a water supply gun to remove 0.5 mL of triethylene glycol monomethyl hydroxyl dimethyl bromide ion liquid annesia to 10 ml round bottom flask, sequentially add 104 μl of chloroform acid solution and 4396 μL. Distilled water (in the final solution of 50 mm, the concentration of the chloride acid was 1 mm). After mixing is uniform, 200 μl of the newly prepared vitamin C solution (vitamin C concentration is 200 mm), and the 60 ° C water bath reaction 10 h, the resulting product was added to anhydrous ethanol, and the centrifugal wash was separated for 3 times, and the gold nanophor is prepared.

Embodiment 2

[0037] 1) First formulate triethylene glycol monomethyl hydroxyl dimethyl bromide ion liquid aqueous solution. A certain amount of triethylene glycol monomethyl ether group-oxyethyl dimethyl bromide ionic liquid is sued, and the concentration of ionic liquid in water is 0.5 mol / L in the water. The concentration of ionic liquid solution used below was 0.5 mol / L.

[0038] 2) Milting guns to remove 1 mL of triethylene glycol monomethyl ether-oxyethyl dimethylbromide ion liquid aqueous solution to 10 ml round bottom flask, sequentially add 104 μl of chloroform acid solution and 3896 μL. Distilled water (the ionic liquid concentration of 100 mm, the concentration of the chloride acid was 1 mm). After mixing is uniform, 200 μl of the newly prepared vitamin C solution (vitamin C concentration is 200 mm), and the 60 ° C water bath reaction 10 h, the resulting product was added to anhydrous ethanol, and the centrifugal wash was separated for 3 times, and the gold nanophor is prepared. ...

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Abstract

A method for preparing gold nanoflowers in an ionic liquid aqueous solution, comprising the following steps: mixing the ionic liquid aqueous solution, chloroauric acid solution, and distilled water to prepare a mixed solution, and then heating the mixed solution with vitamin C in a water bath to obtain a reaction After the mixture is centrifuged, the finished gold nanoflowers are obtained. The present invention adopts ionic liquid as the reaction medium, and through a unique and convenient preparation process, under the conditions of complex operations such as no need for gold seeds and no need to adjust the pH of the reaction solution, the particle composed of nanosheets is simply and quickly prepared in one step. Gold nanoflowers with uniform size, good shape, stable structure and excellent performance.

Description

Technical field [0001] The present invention relates to the preparation of nanomaterials, and more particularly to a method of preparing a gold nanophorite. Background technique [0002] Due to the small particle size, large specific surface area, the nanomaterials have some special properties that have legacy materials, such as surface effects, quantum dimensional effects, small dimensional effects, and macro quantum tunnel effects, etc. These special effects impart unique physical chemical properties of nanomaterials, enabling them to have broad application prospects in many fields, such as catalysis, energy environments, biomedicine, fine chemicals, and the like. In numerous nanomaterials, precious metal nanoparticles are unique physical chemical properties and nano-effects, due to their own unique physical chemical properties, and the nano-effects exhibit a unique light, electrical and catalytic. Among them, Jin nanoparticles have attracted more attention, and they have been ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 姚开胜王楠赵海丽卢伟伟王键吉
Owner HENAN UNIV OF SCI & TECH
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