The Synthesis Of New Type Carbon Nanocomposites And The Study Of The Glucose Sensors

With the rapid development of nanotechnology, nanometercomposite material is by two or more different kinds of material, throughphyscial or chemical method, in the macoscopic and microscopic on witha new performance of the material. All kinds of material in performancefrom each other, produce synergistic effect, make the comprehensiveperformance of composite material is superior to the original componentmaterials and meet various requirements. New type carbonnanocomposites increasingly subject to a wide range of various filedresearchers attention for its superior performance. This paper focuses onthe analysis of the chemical combination of the most active areas ofnanocomposite technology and electrical-preparation of new carbonnano-composite modified electrode.Glucose electrochemical sensor is one of important researchdirection of the electroanalytical chemistry, to be divided according to thepresence or absence of the enzyme, divided into non-enzymes andenzyme glucose sensor two categories. Detection of glucose in the foodindustry, pharmaceutical and clinical industries has far-reachingsignificance.1. In situ attachment of cupric oxide nanoparticles （CuONPs） tomesoporous carbons （MCs） for sensitive amperometric non-enzymaticsensing of glucoseMCs were prepared through a simple double-template method in thisarticle. With nitrogen-nitrogen dimethylacetamide as solvent, mixingMCs and copper nitrate, through a green chemical precipitation, in situwere synthesized stabilization properties of CuONPs-MCsnanocomposites. Due to the larger specific surface area of the MCs aswell as the uniformity of the hole makes the CuONPs were uniformlydispersed on the surface, greatly increasing the sensitivity of the catalyticoxidation of glucose, up to1154.1μA mM^-1cm^-2, the detection limit aslow as0.1μM, to provide an economic, simple and green channel forenzyme-free detection of glucose.2. The preparation of cerium oxid-mesoporous carbon （CeO₂NPs -MCs） nanocomposite and applied in glucose sensorCeO₂NPs–MCs nanocomposites was synthesized through a simple,fast chemical precipitation method in this article. CeO₂NPs uniformlydispersed in the surface of MCs. First，glucose oxide （GOx） and chitosan（CHIT） were mixed, then mixed with CeO₂NPs–MCs, followed bydropped on the modified glassy carbon electrode. Glutaraldehydecrosslinking to fix GOx, get a new carbon nanocomposite glucose sensor.The linear range of the sensor is50-1200μM, the sensitivity up to2.56μAmM^-1cm^-2. Due to the presence of the CHIT, the enzyme of the sensorhas strong affinity to the substrate, and good reproducibility, stability andhigh sensitivity. The CeO₂NPs–MCs sensor can be used to the detectionof actual sampale of hunman serum. The CeO₂NPs–MCs sensor for thedetection of glucose to provide an effective and efficient way.3. Current type glucose sensor based on the palladium platinumalloy carbon nanofibers （PdPt-CNFs） nanocompositePdPt-CNFs nanocomposite was synthesized through a simple, fastreduction method in this article. Due to the presence of CNFs, the PdPtuniformly dispersed on the surface, and then glutaraldehyde crosslinkingfixed GOx, get a glucose sensor. According to the enzyme and thesubstrate specificity of the reaction for high sensitivity detection ofglucose, the detection of a wide range in2.5μM¹1.1mM, sensitivity to159.5μA mM^-1cm^-2, for the detection of enzyme-catalyzed oxidation ofglucose to provide an effective, easy and sensitive way.