Method for compounding hexagon silver nanosheet

A technology of silver nanosheets and hexagons, which is applied in the field of synthesizing hexagonal silver nanosheets with silver ammonia solution, can solve the problems of unsatisfactory synthesis uniformity and slow synthesis speed, and achieve the convenience of large-scale synthesis and short synthesis cycle , low cost effect

Inactive Publication Date: 2013-10-16
HUNAN UNIV OF SCI & TECH
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Problems solved by technology

At present, there are many methods for synthesizing silver nanosheets, such as photochemical reduction, chemical reduction, template method, electrochemical method, microwave method, ultrasonic method, microemulsion method, radiation method, etc. The synthesis speed of these methods is slow and the uniformity of synthesis is not good. ideal

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  • Method for compounding hexagon silver nanosheet
  • Method for compounding hexagon silver nanosheet
  • Method for compounding hexagon silver nanosheet

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with specific experimental examples.

[0017] (1) Preparation of the solution used:

[0018] Weigh 0.8494g AgNO 3 Prepare AgNO at a concentration of 0.1M with 50mL of water 3 Stock solution; 3.0 mL of prepared AgNO 3 Add the solution (0.1M) into a 50mL beaker, slowly add 250μL NaOH solution (0.2M) and shake it, a precipitate is formed, add NH drop by drop under shaking 3 ·H 2 O (5%) 720 μL until the precipitate is completely dissolved, and finally diluted with twice distilled water to prepare a concentration of 0.05MAg (NH 3 ) 2 OH stock solution; take 1.1029g trisodium citrate and dissolve it in 50mL water to prepare a trisodium citrate stock solution with a concentration of 0.075M; weigh 0.1892g NaBH 4 Dissolve in 50mL water to prepare NaBH with a concentration of 0.1M 4 Stock solution; carboxymethyl dextran concentration is 0.01M; commercially available 30% HO 2 o 2 .

[0019] (2...

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Abstract

The invention belongs to the field of chemical engineering, and particular relates to a method for compounding a hexagon silver nanosheet. The method for compounding the hexagon silver nanosheet takes carboxymethyl glucan as stabilizing agents and sodium borohydride as reducing agents and uses an ammoniacal silver solution. According to the method for compounding the hexagon silver nanosheet, a prepared Ag(NH3)2OH solution is added in a conical flask, redistilled water and stirrers are further added, and the conical flask is placed in a magnetic stirring apparatus; trisodium citrate, hydrogen peroxide, carboxymethyl glucan, newly prepared NaBH4 are added in the solution in sequence under stirring, reaction is carried out for 3-5min at room temperature, and a blue hexagon silver nanosheet solution is simply obtained. Compared with other silver nanosheet compounding methods, the method for compounding the hexagon silver nanosheet has the advantages of being short in compounding cycle, simple in operation, low in cost, convenient to compound in large scale and the like. The maximum absorption peak position of the method for compounding the hexagon silver nanosheet is around 680nm, and the average particle diameter is around 45nm.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a method for synthesizing hexagonal silver nanosheets with silver ammonia solution by using carboxymethyl dextran as a stabilizer and sodium borohydride as a reducing agent. Background technique [0002] In recent years, the synthesis of silver nanosheets has attracted widespread attention from scientists. Silver nanosheets have optical, electrical, catalytic, and surface-enhanced Raman properties different from other silver nanoparticles and conventional materials, and have been widely used in electronics, chemical industry, metallurgy, biology, military, machinery, aviation, textiles, etc. , medical and many other fields. At present, there are many methods for synthesizing silver nanosheets, such as photochemical reduction, chemical reduction, template method, electrochemical method, microwave method, ultrasonic method, microemulsion method, radiation method, etc. ...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 龙云飞侯新彦陈述刘帅
Owner HUNAN UNIV OF SCI & TECH
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