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Three-dimensional hierarchical porous carbon film as well as preparation method and application thereof

A carbon film, three-dimensional technology, applied in the field of three-dimensional multi-level porous carbon film and its preparation, can solve the problems of low actual utilization rate and slow material exchange, and achieve the effect of reducing influence and improving sensitivity

Inactive Publication Date: 2017-05-10
FUDAN UNIV
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Problems solved by technology

However, due to the small pore size of the mesopores, the material exchange inside and outside the material is slow, and the actual utilization of the pores is low.

Method used

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  • Three-dimensional hierarchical porous carbon film as well as preparation method and application thereof
  • Three-dimensional hierarchical porous carbon film as well as preparation method and application thereof
  • Three-dimensional hierarchical porous carbon film as well as preparation method and application thereof

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and experimental examples, so that the content described above can be better understood.

[0029] The preparation method of silicon oxide nanowire film:

[0030] The preparation of silicon oxide nanowire film refers to the method of literature [1]. Dissolve 1 g of polyvinylpyrrolidone in 10 g of amyl alcohol, then add 1 g of ethanol, 0.28 g of water, 0.067 mL of 0.18 M sodium citrate, 0.2 mL of ammonia water, shake well and add 0.1 mL of tetraethoxysilane and 0.01 mL of Trimethoxyoctadecylsilane, shake well and let stand overnight. After centrifugation, the product was washed three times with ethanol and water respectively. Then the product is dissolved in ethanol, and suction-filtered on a template with a specific shape to prepare a silicon oxide sheet with a certain shape and thickness. In this patent, the template used is a prototype with a diameter of 4 mm. The th...

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Abstract

The invention belongs to the technical field of nano-materials and particularly provides a three-dimensional hierarchical porous carbon film as well as a preparation method and application thereof. A three-dimensional hierarchical porous carbon film material is prepared by taking a silicon oxide nano-wire film as a hard template, a triblock copolymer as a soft template, phenolic resin as a carbon source and iron nitrate as a graphitization reagent through carrying out high-temperature calcination under the protection of inert gas to carbonize the phenolic resin, and etching the silicon oxide hard template through utilizing hydrofluoric acid. The carbon film has mesopores, so that the carbon film has an extremely large specific surface area and large pores are communicated to provide a rapid mass transferring channel; and meanwhile, the material has relatively good conductivity through a relatively high graphitization degree. The three-dimensional hierarchical porous carbon film is a very excellent material for an electrode, a biosensor and a super-capacitor. For example, the manufactured carbon film is fixedly arranged on a copper rod and a high-sensitivity glucose sensor is manufactured through further nano modification; the detection lower limit can reach 1*10<-13>mol / L.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a three-dimensional multilevel porous carbon membrane, a preparation method and application thereof. Background technique [0002] Mesoporous carbon materials have a wide range of applications in catalysis, gas storage, electricity, biochemistry and other fields because of their rich mesoporous channels, very high specific surface area, and good electrical conductivity. However, due to the small pore size of the mesopores, the material exchange between the inside and outside of the material is slow, and the actual utilization of the pores is low. [3] Three-dimensional hierarchically porous carbon materials have three types of pores: micropores, mesopores and macropores. [4,5] Large pores can store solutions to shorten the transmission distance of ions and improve the transmission efficiency of substances. The mesopores and micropores have high specific s...

Claims

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Application Information

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IPC IPC(8): G01N27/48G01N27/30
CPCG01N27/308G01N27/48
Inventor 王亚军易德亮付丛
Owner FUDAN UNIV
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