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A preparation method of single-walled carbon nanotubes capable of converting electrical signals to detect biomolecules under self-growth conditions

A technology of single-walled carbon nanotubes and biomolecules, applied in the field of nanomaterials, can solve the problems of unfavorable popularization, high cost, complicated detection instruments, etc., and achieve the effects of simple instrument, low cost and high sensitivity

Inactive Publication Date: 2020-03-27
WENZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The detection methods at the present stage are all for the detection of a single biomolecule, and all of them require the use of expensive reagent materials such as fluorescent markers or biological kits. The cost is high and the required detection instruments are complicated, which is not conducive to popularization

Method used

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  • A preparation method of single-walled carbon nanotubes capable of converting electrical signals to detect biomolecules under self-growth conditions
  • A preparation method of single-walled carbon nanotubes capable of converting electrical signals to detect biomolecules under self-growth conditions
  • A preparation method of single-walled carbon nanotubes capable of converting electrical signals to detect biomolecules under self-growth conditions

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Embodiment Construction

[0037] The invention provides a method for preparing a single-walled carbon nanotube capable of converting and detecting biomolecules by utilizing its self-growth condition electrical signal conversion, and the specific operation steps are as follows:

[0038] Step 1: preparing single-walled carbon nanotubes; the operation method is as follows:

[0039] SiO with a surface thickness of 250nm-350nm 2 The Si substrate is manually cut into small pieces of 15mm×12mm;

[0040] Ultrasonic cleaning with acetone, ethanol and water;

[0041] With ethanol as the carbon source and Fe as the catalyst, the single-walled carbon nanotubes are grown on the surface of the Si substrate by the Fast-heating CVD method, and the growth temperature is 850°C-950°C.

[0042] Step 2: modifying gold nanoparticles on the single-walled carbon nanotubes prepared in step 1; the operation method is as follows:

[0043] The prepared single-wall carbon nanotube substrate is treated with 1M HCl soluti...

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Abstract

The invention discloses a preparation method of a single-walled carbon nanotube capable of detecting biomolecule through self growing condition electric signal conversion. The method comprises the following specific operation steps: step one: preparing a single-walled carbon nanotube; step two: modifying gold nanoparticles on the single-walled carbon nanotube formed in the step one; step three: preparing electrode plates at the two ends of a carbon tube; step four: measuring the conductivity between electrodes modified with the gold nanoparticles on a single single-walled carbon nanotube through a probe station and an electrochemical workstation and recording the conductivity. According to the method, the single-walled carbon nanotube is grown on a single-walled carbon nanotube in an in-situ manner, and then the gold nanoparticles are deposited through a soaking method. Carbon nanotubes are not required to be subjected to substrate transfer, and the gold nanoparticles are not requiredto be deposited or assembled through external electric field, so that the method is simple. The method can be applied to the detection of different target molecules other than probe molecules throughthe change of the probe molecules in the single-walled carbon nanotube, has universality, and is beneficial to promotion and application.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a method for preparing a single-walled carbon nanotube capable of transforming and detecting biomolecules by utilizing its self-growth condition electrical signal conversion. Background technique [0002] With the development of biotechnology and the application of biological products more and more widely, the detection methods of biomolecules have also matured, and various detection technologies have been widely used in different biomolecular detection fields. It is relying on these effective detection methods to ensure the accuracy of my country's food and drug monitoring and ensure the safety of circulation. The current detection methods are all for the detection of a single biomolecule, and all of them require expensive reagent materials such as fluorescent markers or biological kits. The cost is high, and the required detection equipment is complicated, which is not conduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/327B82Y30/00B82Y5/00
CPCB82Y5/00B82Y30/00G01N27/3278
Inventor 刘楠楠余艺董幼青胡悦黄少铭
Owner WENZHOU UNIVERSITY
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