Novel carbon nano tube electrochemical sensing interface and preparation method thereof

A technology of carbon nanotubes and sensing interfaces, which is applied in the field of electroanalytical chemistry, can solve problems that have not been reported, and achieve the effects of avoiding agglomeration, improving stability, and improving electrocatalytic activity

Inactive Publication Date: 2014-08-06
ZHEJIANG UNIV
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So far, this preparation method has not been reported

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  • Novel carbon nano tube electrochemical sensing interface and preparation method thereof
  • Novel carbon nano tube electrochemical sensing interface and preparation method thereof
  • Novel carbon nano tube electrochemical sensing interface and preparation method thereof

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[0031]The invention discloses a novel poly(p-aminobenzenesulfonic acid / quaternary ammonium cation-functionalized carbon nanotube / single-layer p-aminobenzenesulfonic acid nanocomposite film modified electrode electrochemical sensing interface preparation and stable and sensitive detection of dopamine. The analysis method is a modified electrode electrochemical sensor analysis system based on a new type of functionalized carbon nanotube electrostatic composite monolayer and polymer film. First, the p-aminobenzenesulfonic acid monolayer is covalently bonded to the On the surface of the glassy carbon electrode, the positively charged quaternary ammonium cation functionalized carbon nanotubes interact electrostatically with the negatively charged p-aminobenzenesulfonic acid on the electrode surface to prepare a stable carbon nanotube modified electrode. On the prepared carbon nanotube / monolayer p-aminobenzenesulfonic acid modified electrode, polymerize p-aminobenzenesulfonic acid by...

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Abstract

The invention discloses a novel carbon nano tube electrochemical sensing interface and a preparation method thereof. The novel carbon nano tube electrochemical sensing interface is characterized in that based on a novel functional carbon nano tube static compound monomolecular layer and a modified electrode electrochemical sensing interface analysis system of a polymer film, and through the use of surface negative charge activity of the anion conducting polymer film and the adoption of layered electrostatic self-assembly, a novel poly sulfanilic acid/quaternary ammonium functional carbon nano tube/monomolecular layer sulfanilic acid nano-composite film modified electrode sensing interface is prepared. Through the electrostatic self-assembly of the poly sulfanilic acid/quaternary ammonium cation functional carbon nano tube/monomolecular layer sulfanilic acid nano-composite film electrode sensing interface, the whole preparation process is simple and time-saving, the condition is controllable, the prepared sensing interface is good in stability and repeatability, the repeatability of the preparation process of the sensing interface is high, and the problem that the stability and the repeatability of an electrochemical sensor are poor in practical application is solved to a great degree.

Description

technical field [0001] The invention belongs to the technical field of electroanalytical chemistry, specifically, a novel poly-p-aminobenzenesulfonic acid / quaternary ammonium cation functionalized carbon nanotube / single-layer p-aminobenzenesulfonic acid electrostatic self-assembled nanocomposite membrane modified electrode electrode Preparation of chemical sensing interface. Background technique [0002] The modified electrode electrochemical analysis method has outstanding advantages such as high sensitivity, simple equipment and easy miniaturization, no need for any sample pretreatment and separation process, simplified analysis procedure and shortened analysis time. Carbon nanotubes (CNTs) are widely used in the preparation of electrochemically modified electrode sensing interfaces due to their large specific surface area, good electrical conductivity and ability to promote electron transfer. But so far, the dispersion and orderly assembly of carbon nanotubes on the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N27/30
Inventor 习玲玲王凤丽
Owner ZHEJIANG UNIV
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