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Gel material on basis of silver nano-particles, method for preparing gel material and application thereof

A technology of silver nanoparticles and gel materials, which is applied in the field of production and preparation of nano-metal organic gel composite materials, to achieve the effects of increasing reduction yield, good catalytic effect, and reducing reduction time

Inactive Publication Date: 2016-06-15
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the incorporation method is that the particle size and properties of the incorporated nanoparticles are determined and basically invariable.

Method used

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  • Gel material on basis of silver nano-particles, method for preparing gel material and application thereof
  • Gel material on basis of silver nano-particles, method for preparing gel material and application thereof
  • Gel material on basis of silver nano-particles, method for preparing gel material and application thereof

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preparation example Construction

[0026] The present invention provides a preparation method of a gel material based on silver nanoparticles, wherein the preparation method comprises: in the presence of dimethylformamide and water, 2-amino-5-mercapto-1,3, 4 Thiadiazole and silver nitrate were mixed to prepare a gel material based on silver nanoparticles.

[0027] The above design mixes 2-amino-5-mercapto-1,3,4 thiadiazole and silver nitrate in the presence of dimethylformamide and water, so that the silver-based The particle size distribution of silver nanoparticles in the gel material of nanoparticles is narrow and can be uniformly embedded in the metal organic gel fiber network. At the same time, the gel material based on silver nanoparticles has good performance in reducing aromatic nitro compounds. The catalytic effect greatly improves the reduction yield and reduces the reduction time.

[0028] Certainly, the mixing process here can be a one-time mixing, but, in a preferred embodiment of the present inve...

Embodiment 1

[0042] 1) Mix 10 mL of dimethylformamide and 0.001 mol of 2-amino-5-mercapto-1,3,4 thiadiazole to prepare mixture M1;

[0043] 2) Mix 1L of water and 0.1 mmol of silver nitrate to prepare the mixture M2;

[0044] 3) 1 mL of the mixture M1 and 1 mL of the mixture M2 were mixed and allowed to stand for 5 minutes, and then dried in an oven at 80° C. to a constant weight to prepare the silver nanoparticle-based gel material A1. (the prepared gel material such as Figure 1A As shown, its UV-Vis absorption spectrum is shown in Figure 1B Shown; the detected SEM image is shown in Figure 2A As shown, the detected TEM image is as follows Figure 2B shown by Figure 2A and Figure 2B It can be seen that the prepared gel material contains silver nanoparticles and the particle size is 20nm)

Embodiment 2

[0046] The preparation was carried out according to the preparation method of Example 1, except that the amount of silver nitrate was 0.2 mmol, and the gel material A2 based on silver nanoparticles was prepared. (The UV-Vis absorption spectrum is shown in Figure 1B shown)

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Abstract

The invention discloses a gel material on the basis of silver nano-particles, a method for preparing the gel material and application thereof.The method includes mixing 2-amino-5-mercapto-1, 3, 4 thiadiazole and silver nitrate with each other under the condition of existence of dimethylformamide and water to obtain the gel material on the basis of the silver nano-particles.According to the technical scheme, the gel material, the method and the application have the advantages that the 2-amino-5-mercapto-1, 3, 4 thiadiazole and the silver nitrate are mixed with each other under the condition of existence of the dimethylformamide and the water, so that the silver nano-particles in the gel material prepared by the aid of the method are narrow in particle size distribution and can be uniformly embedded in metal organic gel fiber networks; excellent catalytic effects can be realized by the gel material on the basis of the silver nano-particles when aromatic nitro compounds are reduced, the reduction yield can be greatly increased, and the reduction time can be shortened.

Description

technical field [0001] The invention relates to the field of production and preparation of nano metal organic gel composite materials, in particular to a gel material based on silver nanoparticles and its preparation method and application. Background technique [0002] The synthesis and application of nano-metal organic gel composites is one of the hot research fields of gel materials science. The in-situ synthesis of such composites does not require the use of surfactants, and the nanoparticles are uniformly distributed in the gel network and last for a long time without coagulation. The direct embedding of nanoparticles into the gel network makes the nanogel composites have the properties of both gel and nanoparticles, which can significantly optimize the physical and chemical properties of the material, such as optical properties, viscosity, thermal conductivity, mechanical strength, etc. Therefore, nanogel composites are considered to be one of the most promising mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/50C07C215/76C07C213/02
CPCC07C213/02B01J23/50B01J35/23C07C215/76
Inventor 封其春赵强
Owner ANHUI NORMAL UNIV
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