Polymethyl methacryate and carbon nano-tube compound material electric pole and method for making same

Abstract

The invention belongs to technique field of electrochemistry sensor, specially a polymethyl methacryate and carbon nanometer tube composite material electrode and preparing method. The electrode adopts polymethyl methacryate and carbon nanometer tube composite material, the preparing method includes: prepolymer solution composed by the azobisisobutyronitrile and polymethyl methacryate is mixed evenly with carbon nanometer tube and filled in the electrode tube, then heated to aggregation, the carbon nanometer tube and polymethyl methacryate prepolymer solution are solidified to obtain electrode; the composite material filling end of the electrode is made to be disc shape, the metal wire and another end of the electrode tube is fixed by admixture to obtain electrode needed. The electrode is easy to produce, cost is low, and can be batch processed, it is an electrochemistry sensor with high-sensitivity, and can be used in capillary tiselius, microflow chip, flow injection analysis system, liquid chromatography, and possesses perfect foreground in filed of environmental monitoring, clinical diagnosis and food analysis.

Description

technical field [0001] The invention belongs to the technical field of electrochemical sensors, and in particular relates to a polymethyl methacrylate / carbon nanotube composite electrode and a preparation method thereof. Background technique [0002] Since the first report of carbon nanotubes by Iijima[1] in Japan in 1991, the material has attracted widespread attention in related fields at home and abroad for its unique structure, excellent electrical conductivity, high mechanical strength, chemical stability and catalytic activity. , has made great breakthroughs in many new fields such as nanoelectronic devices, super composite materials, hydrogen storage materials, and catalyst carriers, which has aroused great interest in the global physics, chemistry, and materials science communities. In the past 10 years, the research and development of carbon nanotubes at home and abroad have been extremely active, and major breakthroughs have been made in the exploration of preparat...

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Problems solved by technology

At present, the production methods of carbon nanotube microelectrodes mainly include solution surface modification method [2], paraffin oil mixed filling method [3] and electrochemical polymerization surface modification method [4]. The solution surface modification method is to disperse carbon nanotubes in a Or in a solution that does not contain a polymer, drop-coat it on the electrode surface and let it dry. The disadvantage is that the carbon nanotube modified film is easy to fall off from the electrode surface; the paraffin oil mixed filling method is to mix carbon nanotubes and paraffin oil to fill the electrode. In the tube, but the carbon nanotube paste in the electrode is a non-rigid material, which will be deformed during the detection process, the noise is large and the signal reproducibility is not good, so it is a disposable electrode; the electrochemical polymerization surface modification method is to use carbon nanotubes Dispersed in the monomer solution of the polymer, the carbon nanotubes are fixed in the polymer on the surface of the electrode through electrochemical polymerization, and there is also the problem that the modified layer of carbon nanotubes on the electrode surface falls off.

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