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Method for preparing metal palladium nanowires of controllable size

A technology of nanowires and metal palladium is applied in the field of preparation of metal palladium nanowires, which can solve problems such as negative environmental impact and achieve the effect of simple operation.

Inactive Publication Date: 2013-08-21
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, chemical methods often require the use of organic reagents and severe reaction conditions such as high temperature and high pressure, which have a greater negative impact on the environment.

Method used

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  • Method for preparing metal palladium nanowires of controllable size
  • Method for preparing metal palladium nanowires of controllable size
  • Method for preparing metal palladium nanowires of controllable size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] ① Preparation of palladium oxide nanoparticles:

[0023] Palladium chloride solid powder is dissolved in water, is mixed with 2.5mM palladium chloride solution; The prepared palladium chloride solution is hydrolyzed at 25 ℃ for 3 days to obtain a palladium oxide nanoparticle solution with a particle size of about nanometers. Atomic force microscope topography of palladium nanoparticles figure 1 shown. figure 1 The white dots in are palladium oxide particles.

[0024] ②Preparation of protein fibers:

[0025] Prepare an insulin solution with a concentration of 1mg / ml and a pH value of 1.6, put the solution in a centrifuge tube and incubate it in a 70°C incubator for 25 hours, then take it out to obtain a culture solution; take 5 microliters of the culture solution and add it dropwise to a new On the stripped mica sheet, a mica sheet with protein fibers deposited is obtained, and one-dimensional protein fibers with uniform size are obtained. Its atomic force microscope...

Embodiment 2 to Embodiment 6

[0031] Change the concentration of prepared palladium chloride solution, embodiment 2 to embodiment 6 are successively 0.1, 1, 5, 10 and 30mM, hydrolyze at 25 ℃ for 3 days to obtain palladium oxide nanoparticles of different particle sizes, palladium oxide nanoparticles The particle size is shown in Table 1. Palladium oxide nanowires with different diameters are obtained after combining palladium oxide nanoparticles of different sizes with protein fibers. The diameter of the palladium oxide nanowires depends only on the size of the palladium oxide particles because they will not pile up together due to electrostatic interaction. Finally, one-dimensional palladium metal nanowires with corresponding sizes can be obtained after reducing palladium oxide with borane dimethylamine.

[0032] Table 1

[0033] Example

[0034] The other contents of Embodiment 2 to Embodiment 6 are the same as Embodiment 1.

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Abstract

The invention relates to a method for preparing metal palladium nanowires of controllable size. The method is characterized in that the method comprises the following steps of (1) preparation of palladium oxide nano-particles, namely a palladium chloride solution of certain concentration is prepared according to needs and hydrolysis is carried out; (2) preparation of azelon, namely an insulin solution is dropwise added on a mica sheet; (3) synthesis of palladium oxide nanowires, namely palladium oxide nano-particle solution is dropwise added on the mica sheet with azelon deposited, and then cultivation and blow-drying are carried out to obtain the palladium oxide nanowires; (4) reduction of palladium oxide, namely borane dimethyl amine is dropwise added on the mica sheet with the palladium oxide nanowires prepared, and after cultivation, washing and blow-drying, the one-dimension metal palladium nanowires are obtained. Compared with the prior art, the method can be used for preparing the environment-friendly metal palladium nanowires of controllable size and is simple.

Description

technical field [0001] The invention relates to a preparation method of metal palladium nanowires, in particular to a preparation method of size-controllable metal palladium nanowires. Background technique [0002] One-dimensional metallic palladium nanowires have attracted extensive attention due to their unique optical, electrical, and catalytic properties. Palladium nanowires prepared by physical etching and other methods are generally expensive, so they are usually prepared by chemical self-assembly. However, chemical methods often require the use of organic reagents and severe reaction conditions such as high temperature and high pressure, which have a relatively large negative impact on the environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an environmentally friendly and size-controllable preparation method of metallic palladium nanowires in view of the current state of the art. [0004] The te...

Claims

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Application Information

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IPC IPC(8): B22F9/20B82Y40/00
Inventor 徐鹏魏余辉王新亚张云云周星飞
Owner NINGBO UNIV
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