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Preparation method of nano-composite Ag/CNTs one-dimensional material

A nanocomposite, carbon nanotube technology, applied in the field of materials, can solve the problems of high dispersion, high loading of Ag nanoparticles, low Ag nanoparticles loading, easy agglomeration of silver nanoparticles, etc., and the preparation process is simple and feasible. control, strong activity and high dispersibility

Inactive Publication Date: 2014-06-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these applications often face a common problem, that is, silver nanoparticles are easy to agglomerate at a high content and the resulting reduction in chemical, optical, and catalytic properties
In order to achieve the purpose of high content and low agglomeration, some researchers have synthesized carbon-based supported silver nanoparticle materials, such as Ag / Polysaccharide [P.Sanpui.ACS Appl, Mater.Interfaces, 3(2011) 218-228], Ag / graphene [S.Bong.Electrochem.Commun.12(2010) 129-131], Ag / carbon black [Xinhua Xu.J.Electroanalytical Chemistry, 696(2013)9-14], Ag / CNTs (Anting et al., Acta Physicochemical Sinica, 2012,28(9), 2202-2208), etc., have improved the silver The dispersibility and activity of the particles, but due to the limitations of its preparation methods, such as chemical deposition and electroless plating, hydrothermal method, silver mirror method and other liquid phase methods, the loading of Ag nanoparticles is usually very low. Ag nanoparticles agglomerate, which is difficult to meet the requirements of high dispersion and high loading of Ag nanoparticles in practical applications.
[Journal of Inorganic Materials, 2009, 24:122-144] synthesized Ag nanocrystalline particles / multi-walled carbon nanotube composites by a simple thermal evaporation deposition method, but the Ag target temperature of this method is as high as 1000 °C, and the nano-silver Easy to oxidize and easily lead to deformation of carbon nanotubes

Method used

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  • Preparation method of nano-composite Ag/CNTs one-dimensional material
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  • Preparation method of nano-composite Ag/CNTs one-dimensional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, the CNTs were immersed in ethanol, sonicated for 10 minutes, sprayed on a glass slide, and dried at 60 °C. Then, the glass sheet sprayed with CNTs was placed on the sample stage of the Japanese JFC-1600 ion sputtering instrument, and the Ag target was used as the sputtering electrode, and the vacuum was evacuated to a vacuum degree of 10 -2 Stop at Mpa, and sputter for 2min at a sputtering current of 10mA to obtain a nanocomposite Ag / CNTs one-dimensional material.

[0020] The surface morphology of the nanocomposite Ag / CNTs one-dimensional material prepared in Characterization Example 1 was obtained by using the JSM-7001F field emission scanning electron microscope of Japan JEOL Company, as figure 2 shown. and figure 1 Compared with the surface morphology of CNTs shown in , the preparation method described in Example 1 evenly loaded silver nanoparticles on the surface of CNTs. On the surface of the nanocomposite Ag / CNTs one-dimensional material in the SEM obs...

Embodiment 2

[0022] First, immerse CNTs in acetone, after ultrasonic treatment for 30 minutes, spray on the PET film, and dry at 60°C, then place the PET film sprayed with CNTs on the sample stage in the ion sputtering instrument, and the sputtering electrode is Ag Target, evacuated to a vacuum of 10 -1 Mpa stops, and the sputtering time is 1.2min at a sputtering current of 20mA to obtain a nanocomposite Ag / CNTs one-dimensional material. The test results show that: the preparation method described in Example 2 uniformly supports silver nanoparticles on the surface of CNTs; the results of energy spectrum analysis: the mass ratio of Ag:C is about 2:1.

Embodiment 3

[0024] First, CNTs were immersed in ethanol, and after ultrasonic treatment for 20 min, they were sprayed on PET film and dried at 60 °C. Then, the PET film sprayed with CNTs was placed on the sample stage in the ion sputtering instrument, the sputtering electrode was an Ag target, and the vacuum was evacuated to a vacuum degree of 10 -3 Mpa stops, and the sputtering time is 10s at a sputtering current of 30mA to obtain a nanocomposite Ag / CNTs one-dimensional material. The results show that: the preparation method described in Example 3 uniformly loaded silver nanoparticles on the surface of CNTs; energy spectrum analysis results: the mass ratio of Ag:C is about 0.1:1.

[0025] Table 1 The Ag / C mass ratio on the surface of the nanocomposite Ag / CNTs one-dimensional material obtained in Examples 1 to 3

[0026]

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PUM

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Abstract

The invention provides a preparation method of a nano-composite Ag / CNTs one-dimensional material. The preparation method disclosed by the invention comprises the following steps of: firstly, immersing a carbon nano tube in ethanol or acetone, after carrying out ultrasonic dispersion treatment, spraying the carbon nano tube on a matrix, and drying at 60 DEG C; and then, putting the matrix sprayed with the carbon nano tube on a sample table in an ion sputtering apparatus, taking Ag as the target sputtering electrode, sputtering for 10 s to 2 min with the sputtering vacuum degree of (10-1)-(10-3) Mpa and the sputtering current of 10-30 mA, and obtaining the nano-composite Ag / CNTs one-dimensional material with the nano-silver-to-CNTs mass ratio of 0.1 to 4.1. The preparation method of the nano-composite Ag / CNTs one-dimensional material disclosed by the invention is simple and controllable in preparation process, rapid in finished product rate and low in cost; and the nano-composite Ag / CNTs one-dimensional material having good dispersity and high loading capacity can be obtained.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a method for preparing a nanocomposite Ag / CNTs one-dimensional material. Background technique [0002] Silver nanoparticles have broad application prospects in fuel cells, photosensitive devices, biomaterials and other fields. However, these applications often face a common problem, that is, silver nanoparticles are easy to agglomerate when the content is high, and the resulting chemical, optical, and catalytic properties are reduced. In order to achieve the purpose of high content and low agglomeration, some researchers have synthesized carbon-based supported silver nanoparticle materials, such as Ag / Polysaccharide [P.Sanpui.ACS Appl, Mater.Interfaces, 3(2011) 218-228], Ag / graphene [S.Bong.Electrochem.Commun.12(2010) 129-131], Ag / carbon black [Xinhua Xu.J.Electroanalytical Chemistry, 696(2013)9-14], Ag / CNTs (Anting et al., Acta Physicochemical Sinica, 2012,28(9), 2202-2208), etc., ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34C23C14/18B82Y40/00
Inventor 景茂祥沈湘黔李旻李博李旺
Owner JIANGSU UNIV