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Funtionalized carbon nanotube modified electrode and its preparation method and uses

A technology of carbon nanotubes and modified electrodes, which is applied in the direction of material electrochemical variables, etc., to achieve the effect of increasing specific surface area, good electrochemical response and separation effect, and fast and simple method

Inactive Publication Date: 2012-06-20
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is no such functional carbon nanotube modified electrode in the prior art

Method used

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  • Funtionalized carbon nanotube modified electrode and its preparation method and uses
  • Funtionalized carbon nanotube modified electrode and its preparation method and uses
  • Funtionalized carbon nanotube modified electrode and its preparation method and uses

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Experimental program
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Effect test

Embodiment 1

[0048] 1. Preparation of functionalized carbon nanotube modified electrode:

[0049] 1. Preparation of carbon nanotube modified electrode:

[0050] (1) Place the multi-walled carbon nanotubes in a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) for oxidation treatment to introduce oxygen-containing groups. Disperse the oxidized multi-walled carbon nanotubes in 2mL N,N-dimethylformamide (DMF) ultrasonic treatment for 30 minutes to form a 1 mg / mL black carbon nanotube suspension;

[0051] (2) The glassy carbon electrode was polished into a mirror surface with 0.3μm and 0.05μm aluminum oxide suspensions, and then washed with 95% ethanol and double distilled water in order to obtain a bare glassy carbon electrode;

[0052] (3) After drying the above-mentioned bare glassy carbon electrode with nitrogen with a purity of 99.999%, 5μL of carbon nanotube suspension was drip-coated onto the surface of the bare glassy carbon electrode, and then dried unde...

Embodiment 2

[0093] Preparation of functionalized carbon nanotube modified electrode:

[0094] 1. Preparation of carbon nanotube modified electrode:

[0095] (1) Place the multi-walled carbon nanotubes in a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) for oxidation treatment to introduce oxygen-containing groups. Disperse the oxidized multi-walled carbon nanotubes in 2mL N,N-dimethylformamide (DMF) ultrasonic treatment for 30 minutes to form a 1 mg / mL black carbon nanotube suspension;

[0096] (2) The glassy carbon electrode was polished into a mirror surface with 0.3μm and 0.05μm aluminum oxide suspensions, and then washed with 95% ethanol and double distilled water in order to obtain a bare glassy carbon electrode;

[0097] (3) After drying the above-mentioned bare glassy carbon electrode with nitrogen with a purity of 99.999%, 5μL of carbon nanotube suspension was drip-coated onto the surface of the bare glassy carbon electrode, and then dried under a...

Embodiment 3

[0101] Preparation of functionalized carbon nanotube modified electrode:

[0102] 1. Preparation of carbon nanotube modified electrode:

[0103] (1) Place the multi-walled carbon nanotubes in a mixed acid of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) for oxidation treatment to introduce oxygen-containing groups. Disperse the oxidized multi-walled carbon nanotubes in 2mL N,N-dimethylformamide (DMF) ultrasonic treatment for 30 minutes to form a 1 mg / mL black carbon nanotube suspension;

[0104] (2) The glassy carbon electrode was polished into a mirror surface with 0.3μm and 0.05μm aluminum oxide suspensions, and then washed with 95% ethanol and double distilled water in order to obtain a bare glassy carbon electrode;

[0105] (3) After drying the above-mentioned bare glassy carbon electrode with nitrogen with a purity of 99.999%, 5μL of carbon nanotube suspension was drip-coated onto the surface of the bare glassy carbon electrode, and then dried under a...

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Abstract

The invention provides a funtionalized carbon nanotube modified electrode which is prepared through following steps: first the carbon nanotube modified electrode is prepared, then the carbon nanotube modified electrode is placed in the acetonitrile solution containing supporting electrolyte and tetraphenylporphyrin; electropolymerization is performed by using the carbon nanotube modified electrode as a work electrode to acquire a functionalized carbon nanotube modification electrode. The invention also provides a preparation method of the functionalized carbon nanotube modified electrode and uses of the electrode in detecting and separating resorcinol isomer. In the invention, resorcinol isomer can be quickly separated and simultaneously quantitatively detected; the method of the invention is simple and quick, highly sensitive and can be used for detecting trace amount of resorcinol isomer.

Description

Technical field [0001] The invention relates to a carbon nanotube modified electrode, in particular to a functionalized carbon nanotube modified electrode. Background technique [0002] Hydroquinone isomers are widely used in the production of stabilizers, antioxidants, dyes and other chemical products. Due to its high toxicity and wide distribution, it has already posed a great threat to people's life and safety, which has caused great attention to environmental monitoring. At the same time, due to the similar structure and performance of the diphenol isomers at low concentrations, it is difficult to separate them completely. [0003] Carbon nanotubes (CNTs) are made of carbon atoms sp 2 The ideal structure constructed by hybridization has been widely used to detect and remove various aromatic pollutants due to its large specific surface area and strong adsorption performance. Porphyrin compounds are a class of organic compounds with a planar conjugated structure, and are the ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 卢小泉权妍丽薛中华周喜斌仵博万张学凤
Owner NORTHWEST NORMAL UNIVERSITY
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