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Method using hypha as template for preparation of graphene tube with controllable aperture

A graphene tube and hyphae technology, applied in the direction of graphene, nano-carbon, etc., can solve the problems of cumbersome steps, complex process control, and hindering the industrial production of materials, and achieve easy removal, good repeatability, and large-scale industrial promotion value Effect

Inactive Publication Date: 2014-07-30
RES INST OF XIANGCHENG SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methods for preparing graphene tubes are also basically concentrated on the arc method, laser evaporation method and chemical vapor deposition method, which not only require violent reactions to decompose the carbon source, but also require cumbersome steps and complicated process control, and the final product is often mixed. Impurities such as amorphous carbon need to be further purified by physical means such as filtration and centrifugation, which seriously hinders the industrial production of such materials
So far, there has been no report on the use of fungi to synthesize graphene tube materials with controllable pore size.

Method used

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  • Method using hypha as template for preparation of graphene tube with controllable aperture
  • Method using hypha as template for preparation of graphene tube with controllable aperture
  • Method using hypha as template for preparation of graphene tube with controllable aperture

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Cut 100 g of potatoes into pieces, boil them in 500 mL of ultra-pure water for 30 min, and filter them through gauze to obtain potato liquid. The mass ratio of glucose, peptone, sodium chloride, and yeast extract is 0.5 g: 1 g: 0.5 g: 1 g was dissolved in 195 mL of ultrapure water to form a solution. Add 5 mL of potato liquid and sterilize. Use an inoculation loop to inoculate Geotrichum candida into the liquid medium that has been sterilized and cooled. The Erlenmeyer flask was placed on a shaker at 26°C to start culturing, and the speed of the temperature-controlled shaker was 100 rpm;

[0029] (2) During the 24 hours of pre-cultivation, it is the stagnation period of bacterial growth. After 24 hours, samples are taken from the culture medium every 8 hours, spread on glass slides, and placed under a fluorescent microscope for microscopic examination to observe the thickness of mycelia. and pipe diameter;

[0030] (3) When the strain enters the vigorous logarithmi...

Embodiment 2

[0035](1) Glucose, peptone, sodium chloride, and yeast extract were dissolved in 245 mL of ultrapure water in a mass ratio of 0.5 g: 1 g: 0.5 g: 1 g to form a solution, and 5 mL of potato liquid was added (preparation of potato liquid See Example 1), sterilize, add 3 g of agar to 250 mL of liquid medium, heat to sterilize, pour into a petri dish to cool, condense into a solid medium, use an inoculation loop to inoculate Geotrichum candidum on the surface of the medium , place the culture dish containing the medium in an incubator at 26 °C to start culturing;

[0036] (2) After culturing for 24 hours, take samples from the culture medium at intervals of 8 hours, spread them on glass slides, place them under a fluorescent microscope for microscopic inspection, and observe the mycelium thickness and tube diameter;

[0037] (3) When the strain enters the stagnation period of growth, use tweezers to tear off a large amount of white mycelium from the surface of the medium, and put i...

Embodiment 3

[0041] (1) Dissolve glucose, peptone, sodium chloride, and yeast extract in a mass ratio of 0.5 g: 1 g: 0.5 g: 1 g into 195 mL of ultrapure water to form a solution and add 5 mL of wort, which can be obtained from You can buy it from a brewery, or you can make it yourself. To make it yourself, take 100g of malt or malt powder, add 500mL of water, keep it warm at 45°C for 30 minutes, then gradually raise the temperature to 70°C, filter and boil, and you can get light blue and fragrant saccharified wort , which is wort;

[0042] To sterilize, add 1 mL of sterilized vitamin C. The Penicillium strain was inoculated into the sterilized and cooled liquid medium, and the Erlenmeyer flask was cultured in a shaker at 28 °C, and the speed of the temperature-controlled shaker was 100 rpm;

[0043] (2) After culturing for 24 hours, take samples from the culture medium at intervals of 8 hours, spread them on glass slides, place them under a fluorescent microscope for microscopic inspectio...

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Abstract

The invention discloses a method using hypha as a template for preparation of a graphene tube with a controllable aperture, the method comprises the following steps: (1) preparing a liquid culture medium; (2) inoculating fungus and observing; (3) separating hypha; (4) performing heat treatment on the obtained hypha, to be more specific, putting the hypha obtained by the step (3) into a crucible, placing in a tube furnace, leading in nitrogen for protection, heating to 500-800 DEG C, keeping warm for 2 hours and automatically cooling; (5) after calcination, taking a prepared grapheme tube out for cooling. The grapheme tube material is prepared by a relatively simple chemical process, needed chemical raw materials are less and non-toxic, no complex equipment is needed, the cost is low, a biological template is easy to remove and free of pollution to the environment, the experimental repeatability is good, and the method has great industrial popularization value.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing a graphene tube with controllable aperture by using hyphae as a template. Background technique [0002] Carbon elements can form two-dimensional single-layer graphene materials through the benzene ring structure formed by the close arrangement of carbon atoms in different hybridization methods. This feature has attracted the attention of many scientists. The basic structural unit of graphene is a six-membered ring, which is the most ideal two-dimensional nanomaterial. The π bond in the direction perpendicular to the graphene crystal plane makes it have excellent electrical conductivity, and its electron mobility can reach 200,000 cm 2 / (V·s). Two-dimensional graphene sheets can form a seamless tubular structure by curling and stacking, and have different tube wall numbers and tube diameters. The cylindrical carbon tube composed of graphene i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184
Inventor 陈志刚刘成宝钱君超陈丰徐政何凤娟李萍
Owner RES INST OF XIANGCHENG SUZHOU UNIV OF SCI & TECH
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