Method for preparing silver nanowires by using biomolecular amino acid as reducing agent

A technology of biomolecules and silver nanowires, which is applied in the field of preparation of nanomaterials, can solve problems such as not being published, and achieve the effects of mild conditions, convenient preparation, and simple system

Active Publication Date: 2013-09-18
佛山市天宝利硅工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under mild conditions, using biomolecular amino acids to reduce silver salts in the liquid phase to obtain silver nanowires is a method worthy of attention due to its simplicity and high efficiency. At present, this method has not yet been published.

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  • Method for preparing silver nanowires by using biomolecular amino acid as reducing agent
  • Method for preparing silver nanowires by using biomolecular amino acid as reducing agent
  • Method for preparing silver nanowires by using biomolecular amino acid as reducing agent

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Embodiment 1

[0018] See figure 1 , which is a transmission electron micrograph of silver nano-products in different reaction systems of glycine-silver nitrate in Example 1 of the present invention. The molar ratio of glycine to silver nitrate is 2:1, AgNO 3 Concentration is 0.03mol / L, and reaction temperature is 25 ℃, and reaction time is 24h.

[0019] The method for preparing silver nanowires using biomolecular amino acid as a reducing agent provided in the embodiment of the present invention has the following steps:

[0020] (1) Prepare AgNO with a concentration of 0.03mol / L 3 Solution, adding quantitative glycine biomolecules therein to make the concentration 0.06mol / L, mix it with a mixer for 1min, put it into an incubator to keep the constant temperature at 25°C, and the reaction time is 24h;

[0021] (2) Collect the obtained product, and observe through a transmission electron microscope that the main product obtained is a curved linear structure. The silver nanowire has a length...

Embodiment 2

[0023] See figure 2 , which is a transmission electron micrograph of silver nano-products in different reaction systems of glycine-silver nitrate in Example 2 of the present invention. The molar ratio of glycine to silver nitrate is 1:1, AgNO 3 Concentration is 0.03mol / L, and reaction temperature is 25 ℃, and reaction time is 20h.

[0024] The method for preparing silver nanowires using biomolecular amino acid as a reducing agent provided in the embodiment of the present invention has the following steps:

[0025] (1) Prepare AgNO with a concentration of 0.03mol / L 3 Solution, adding quantitative glycine biomolecules therein to make the concentration 0.03mol / L, mix with a mixer for 1min, put into an incubator to maintain a constant temperature of 25°C, and the reaction time is 24h;

[0026] (2) Collect the obtained product, and observe through a transmission electron microscope that the main product obtained is a curved linear structure. The silver nanowires have a length ...

Embodiment 3

[0028] See image 3 , which is a transmission electron micrograph of silver nano-products in different reaction systems of glycine-silver nitrate in Example 3 of the present invention. The molar ratio of glycine to silver nitrate is 1:2, AgNO 3 Concentration is 0.03mol / L, and reaction temperature is 25 ℃, and reaction time is 22h.

[0029] The method for preparing silver nanowires using biomolecular amino acid as a reducing agent provided in the embodiment of the present invention has the following steps:

[0030] (1) Prepare AgNO with a concentration of 0.03mol / L 3 solution, wherein quantitative biomolecular amino acid A (i.e. glycine) is added to make its concentration 0.015mol / L, mixed with a mixer for 1min, put into an incubator and keep the constant temperature at 25°C, and the reaction time is 24h;

[0031] (2) Collect the obtained product, and observe through a transmission electron microscope that the obtained product is a mixture of spherical particles and curved l...

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Abstract

The invention discloses a method for preparing silver nanowires through reduction of silver nitrate by using a biomolecular amino acid as a reducing agent in a liquid phase under a mild condition. The method comprises the following steps: preparing a AgNO3 solution at a certain concentration; adding a certain amount of glycine biomolecules into the AgNO3 solution; uniformly mixing the mixture with a shaker; putting the mixture into an incubator; after reacting for a certain period of time, collecting the obtained product; and observing a bent linear structure of the obtained product through a transmission electron microscope, with the length of 50-400 nm and the diameter of 20-30 nm. Compared with the prior art, the method has the advantages as follows: the reaction system is simple and feasible, the reaction condition is mild, and the cost is saved; the product has the characteristics of controllable morphology and particle size, high yield, clear structure and the like; and the biomolecules are used as the reducing agent, so that the method is environment-friendly.

Description

technical field [0001] The invention relates to the field of preparation of nanometer materials, specifically a method for preparing silver nanowires by using biomolecular amino acid as a reducing agent. Background technique [0002] Silver nanoparticles with anisotropic structure, such as one-dimensional silver nanowires, silver nanorods, etc., have unique optical and electrical properties due to their unique morphology, and can be widely used in medicine, catalysis, antibacterial, biological Sensor materials and many other fields. Nowadays, silver nanoparticles with various shapes are synthesized by chemical methods, such as photochemical reduction method, electrochemical reduction method and liquid phase chemical reduction method. Among them, the liquid phase reduction method is more convenient to operate, low in cost and large in output, so it has attracted people's attention. [0003] However, according to the current requirements of sustainable social development, en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 张启发孙义忠王庐岩
Owner 佛山市天宝利硅工程科技有限公司
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