Method of green synthesis of nanogold through kiwi fruit juice

A kiwifruit juice, green synthesis technology, applied in nanotechnology, nanotechnology, nanostructure manufacturing and other directions, can solve the problems of limited ability to control the shape of nano gold particles, high equipment requirements, high production costs, etc., to achieve the amount of raw materials. The effect of less, low cost and simple installation

Inactive Publication Date: 2014-02-19
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Application Information

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Problems solved by technology

The quality of the product obtained by the physical method is high, but the requirements for equipment are high, the production cost is expensive, and the ability to control the morphology of gold nanoparticles is limited; the chemical method is flexible and diverse, and can be used to prepare gold nanoparticles of various shapes, but most The chemical method requires the introduction of more chemical reagents, which may cause certain environmental pollution problems

Method used

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  • Method of green synthesis of nanogold through kiwi fruit juice
  • Method of green synthesis of nanogold through kiwi fruit juice
  • Method of green synthesis of nanogold through kiwi fruit juice

Examples

Experimental program
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Effect test

Embodiment 1

[0016] 1. Draw 20 mL of ultrapure water into a 50 mL Erlenmeyer flask, and add 0.2 mL of chloroauric acid solution, the solution at this time is 0.01% chloroauric acid solution. The resulting solution was heated and stirred in a boiling water bath for 10 minutes.

[0017] 2. Quickly add 1mL of fruit juice, and after stirring for about 30 minutes, stop heating and cool to room temperature. During the reaction process, the color of the mixture gradually changed from colorless and transparent to wine red, such as figure 1 As shown, the color transition indicates the formation of gold nanoparticles.

[0018] 3. The ultraviolet-visible absorption spectrum (UV-vis) characterization results of the synthesized gold nanoparticles solution are as follows: figure 2 shown. Transmission electron microscopy (TEM) characterization results are as follows image 3 shown.

Embodiment 2

[0020] 1. the steps of this process method and embodiment one are substantially the same, and the difference is that the control synthesis temperature is room temperature (25 o C). The specific method is to quickly add 1 mL of fruit juice to 20 mL of 0.01% chloroauric acid solution at room temperature, and stop the stirring reaction after stirring for about 3 hours. The reaction obtains a spherical gold nanomaterial with a particle size similar to that of Example 1 and a more dispersed particle size.

[0021] 2. The characterization results of ultraviolet-visible absorption spectrum (UV?vis) are as follows: Figure 4 shown. Transmission electron microscopy (TEM) characterization results are as follows Figure 5 shown.

Embodiment 3

[0023] The steps of this process method and embodiment one are substantially the same, except that the amount of kiwi fruit juice controlled in the nano-golden green process is 2mL. The specific method is to quickly add 2 mL of fruit juice to 20 mL of 0.01% chloroauric acid solution in a boiling water bath, and stop the stirring reaction after about 30 minutes of reaction. The reaction obtains a spherical gold nanomaterial with a particle size distribution similar to that of Example 1 and a larger particle size.

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Abstract

The invention relates to a method for green synthesis of nanogold through kiwi fruit juice. Chloroauric acid (0.01% m / v) is used before a reaction and reacts with the kiwi fruit juice to compound fuchsia nanogold, and under the normal pressure condition, nanogold materials are prepared through different experiment conditions (juice adding amounts and reaction temperatures). Results of an ultraviolet visible absorption spectrum and a transmission electron microscope prove that the grain size of the compounded nanogold materials can be controlled through reaction conditions. The green synthesis method does not need other large devices, the method is simple, the amount of raw materials is small, the reaction condition is moderate, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of material preparation and relates to a new method for green synthesis of nano-gold materials. Background technique [0002] Nano-gold materials have been widely valued because of their unique catalytic and optical properties, and their preparation and application have become a research hotspot in the field of nanotechnology. Compared with the traditional physical and chemical methods, the bioreduction method based on microorganisms or plants that has emerged in recent years has the advantages of low cost, environmental protection, and high stability of nanomaterials, and has become a novel preparation method for nano-gold materials with development prospects. There are many methods for preparing nano-noble metal materials, including physical methods, chemical methods and biological methods. Li Yawen et al. used pulsed laser to ablate silver flakes in deionized water, and obtained silver nanoparticles and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B82B1/00B22F9/24
Inventor 刘睿高英邱伟黄强黄晓英刘金东
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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