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Preparation method for silver nanowires

A silver nanowire and nanotechnology, applied in the field of preparation of silver nanowires, can solve the problems such as hindering the application of silver nanowires, high price, complicated preparation method and the like

Inactive Publication Date: 2017-06-13
QINGDAO R & D INST XIAN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the metal is more expensive than precious metals, how to ensure the maximum use of its characteristics under the same dosage is the current research hotspot, but in the current research, there are complex preparation methods and synthetic silver The problem of low aspect ratio of nanowires hinders the application of silver nanowires

Method used

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Embodiment Construction

[0011] The present invention will be further described below in combination with specific embodiments.

[0012] (1) Silver nitrate is added to deionized water to prepare a 0.05mol / L silver nitrate aqueous solution, which is added to the reaction vessel. Porous silicon is provided on one side of the reaction vessel, and then added with a volume ratio of lauryl dimethyl benzyl ammonium chloride :C 15 Trimethylammonium bromide = 1:1 mixture as surfactant, composed of oleic acid: polyvinylpyrrolidone: polyvinyl alcohol: diethylenetriamine = 2:4:3.5 dispersant, stirring for 5min and then standing for 3h , and then apply a 200N / C electric field to both ends of the reaction vessel, and at room temperature, the silver ions move directionally under the action of the electric field and concentrate on the porous silicon surface, and add 0.2mol / L sodium sulfite under the action of ultrasonic vibration stirring and electric field coupling The aqueous solution, wherein the molar ratio of s...

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Abstract

The invention discloses a preparation method for silver nanowires. Firstly, a silver precursor solution is prepared, a surfactant is added into the solution, silver ions are enriched on a porous silicon template under the action of an electric field, a reducing agent is added to reduce the silver ions to obtain nano particles, then the precursor solution is added again, the electric field in the vertical direction is applied, the reducing agent is added, so that the silver ions move directionally and grow, and the reducing agent is added to obtain the silver nanowires with a high length-to-diameter ratio and regular orientation.

Description

technical field [0001] The invention relates to a preparation method of silver nanowires. Background technique [0002] Metals belong to noble metals. Due to their good selective catalytic activity and electrical conductivity, silver nanomaterials currently have good application prospects in many industrial and technical fields such as catalytic converters, fuel cells, and petroleum cracking. Recent studies have found that some good physical properties of silver nanomaterials are closely related to the shape and size of nanomaterials. Effective control of the shape and size of silver nanomaterials is expected to significantly improve the physical and chemical properties of silver nanomaterials. Compared with the zero-dimensional structure, the one-dimensional structure of nanomaterials shows the advantages of higher aspect ratio, fewer lattice defects, smaller lattice spacing and high surface atomic number. In addition, due to the structural anisotropy, the one-dimensional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/0547
Inventor 候晓翠李增辉潘龙毕利君
Owner QINGDAO R & D INST XIAN JIAOTONG UNIV