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Porous nano-gold carbon nanotube composite material and preparation method thereof

A technology of porous nano-gold and carbon nanotubes, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems that are not conducive to the formation of pore structures, excessive agglomeration of nano-gold particles, etc., and achieve enhanced Effects of biocompatibility, prevention of growth and aggregation, and mild reaction conditions

Inactive Publication Date: 2017-08-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there are too many surface-modified organic groups, it is easy to cause excessive agglomeration among the gold nanoparticles, which is not conducive to the formation of the pore structure. Therefore, it is of great significance to provide an improved preparation method of nanoporous gold-carbon nanotube composites.

Method used

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  • Porous nano-gold carbon nanotube composite material and preparation method thereof
  • Porous nano-gold carbon nanotube composite material and preparation method thereof
  • Porous nano-gold carbon nanotube composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of nanoporous gold-carbon nanotube composite material, the steps are as follows:

[0034] 1) Preparation of porous gold seeds: Dissolve 0.2187g TOAB in 16ml of toluene, after ultrasonic treatment for 30min, add 5ml of chloroauric acid solution (concentration: 10g / L), stir well, weigh 0.001g of short hydroxylated multi-walled carbon nanotubes In the above liquid, stir evenly to obtain solution I. Weigh 0.0760 g of sodium borohydride and dissolve it in 5 ml of deionized water, and stir evenly to obtain solution II. Add solution II dropwise to solution I under stirring condition, wait for the liquid phase to separate after 30 minutes of reaction, and take the upper organic liquid phase for later use.

[0035] 2) Perform solvent heat treatment on the seed crystal: mix the organic liquid phase obtained in step 1) with 20ml toluene and add it into a beaker, stir and mix well, then transfer to the reaction kettle, seal it and put it in an oven, and react at 180°C ...

Embodiment 2

[0038] It is basically the same as Example 1, except that step 1) the mass ratio of chloroauric acid and hydroxylated carbon nanotubes is 25:1, the mass ratio of TOAB and chloroauric acid is 5:1, and the concentration of TOAB in solution I is 0.016mol / L; The volume ratio of organic liquid phase to toluene is 1:2. The solvothermal reaction condition of step 2) is: constant temperature reaction at 160° C. for 10 h.

[0039] The synthesized product is characterized as similar to Example 1. Figure 6The SEM image of the product obtained for Example 2, Figure 7 XRD pattern of the product obtained for Example 2.

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Abstract

The invention relates to a porous nano-gold carbon nanotube composite material and a preparation method thereof. The porous nano-gold carbon nanotube composite material is characterized in that nano-gold particles with large size are accumulated to form a tunnel, the carbon nanotube is interpenetrated in the tunnel, and nano-gold particles with small size is attached on the surface of the carbon nanotube. The nano-gold carbon nanotube composite material with the porous structure is obtained by crystallization of nano-gold seed crystal with the crystal grain size of 20-30 nm by taking toluene as a solvent through a solvothermal method. Compared with the traditional porous gold material, the method provided by the invention use a self-assembly solvothermal method, does not use a strong corrosive substance, reaction condition is mild, steps are simple, and the used reagent is mild.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a nanoporous gold-carbon nanotube composite material and a preparation method thereof. Background technique [0002] Because biofuel cells are a special type of fuel cells that use biocatalysts to convert chemical energy in fuels into electrical energy, the advantages of biofuel cells are a wide range of raw materials, mild reaction conditions, high energy conversion efficiency, and less pollution to the environment. Small, its biocompatibility is good. Among them, biofuel cells using enzymes as catalysts are called enzyme biofuel cells. [0003] However, there are still many problems to be solved for this type of battery, such as low current density, low power density, short life, poor stability, and little research on practical system applications. Among them, the low efficiency of electron transport is the key problem hindering the development of enzy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/88H01M8/16B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8647H01M4/88H01M4/9008H01M4/9075H01M8/16Y02E60/50
Inventor 阳晓宇胡世聪范珊珊陈丽华李昱王洪恩吴旻刘婧董瑀肖洒沈凌田歌
Owner WUHAN UNIV OF TECH
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