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Method for preparing fullerenes nano micron fibre

A fullerene, nano-micron technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology and other directions, can solve the problems of poor reproducibility, difficult large-scale preparation, long growth cycle, etc., to achieve improved reproducibility, convenient, stable and reliable operation. , the effect of good environment

Inactive Publication Date: 2010-01-20
QINGDAO UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

Among the above-mentioned methods for preparing fullerene nano-micro wires and nano-micro tubes, only the nano-micro fibers synthesized by the Miyazawa method have a single crystal structure, high aspect ratio and high purity (more than 99.9%), but the Miyazawa method prepares fullerenes C 60 、C 70 The nano-micro-wires and nano-micro-tubes have a long growth period (more than one week) and poor reproducibility. They cannot stably provide enough samples for research and are difficult to prepare on a large scale.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 0.01g C 60, with a purity of 99.9%, commercially available products, ground to a metallic luster with an agate mortar, making C 60 Spread evenly on the inner surface of the mortar, use a pipette to take 1.5ml of pyridine and add it to the mortar to dissolve it, and transfer the pyridine solution into a 25ml transparent colorless glass bottle, and then use a small amount (60 were transferred into the reagent bottle to prepare 20ml C 60 - Pyridine solution.

[0022] replace the above C 60 - Put the pyridine solution into the ultrasonic container, and use 100w power ultrasonic vibration for 30min at room temperature, in order to make C 60 Fully dispersed and dissolved in pyridine solvent.

[0023] After the ultrasonic vibration is completed, the above C 60 -Pyridine solution was filtered with medium-speed qualitative filter paper to obtain purple C 60 - a saturated solution of pyridine.

[0024] replace the above C 60 - The saturated pyridine solution was irra...

Embodiment 2

[0028] Embodiment 2 steps are the same as embodiment 1, and difference is that above-mentioned C 60 - The pyridine saturated solution was irradiated with blue light (27W, wavelength 425nm) for 30-60min at room temperature, and the temperature of the incubator was 9°C.

Embodiment 3

[0030] Embodiment 3 steps are the same as embodiment 1, difference is the C after illumination 60 - Pyridine colloid, filtered with medium-speed qualitative filter paper to obtain brown C 60 -Pyridine solution, and standing in an 8°C incubator, after 72 hours, agglomerated cotton wool-like products appeared in the bottle.

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PUM

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Abstract

The process of preparing nanometer and micron fullerene fiber includes: grinding fullerene material to reach metal luster, dissolving in organic solvent to obtain saturated solution, irradiating with visible light to form colloid solution, mixing with certain amount of lean solvent, setting in thermostat for certain time to separate out monocrystalline nanometer and micron fullerene fiber in millimeter to centimeter level length. The process is simple, feasible and repeatable, and the monocrystalline fullerene fiber with high length-to-diameter ratio and high purity may be applied in fuel cell electrode, catalyst, low dimensional semiconductor, etc.

Description

technical field [0001] The invention relates to the field of fullerene-based nano-micron materials, in particular to a preparation method for fullerene-based nano-micron fibers. Background technique [0002] Low-dimensional nano-micron carbon materials are ideal systems for studying the size and dimensional effects of physical properties such as electron transport behavior, optical properties, and mechanical properties. Therefore, low-dimensional nano-micron carbon structure materials are the frontier and hot spot in the field of nano-micron material science. [0003] Since the discovery of fullerene C by Kroto et al. in 1985 60 Fullerenes have unique physical and chemical properties due to their highly symmetric, spherically delocalized π-electron conjugated systems. The strange photophysics, electrical conductivity, photoconductivity and light-limited behavior of fullerene have aroused great interest of scientists. After more than 20 years of research, organic fullerene ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82B3/00
Inventor 朴光哲李少香李桂宝韩铸李荣勋冯绍华丁乃秀刘法谦刘光烨
Owner QINGDAO UNIV OF SCI & TECH
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