| Au nanoparticles were spontaneous reduced on carbon nanotubes grown directly onsubstrate that are fabricated using electrodeposited iron particles, and it was use for nonenzymatic sensor for detection glucose. At the same time , it was researched that preparation of enzyme biosensor based on carbon nanotubes grown directly on substrate, and enzyme biosensor was applied in detection organophosphates pesticides, in this paper, manly work and achievement as follows:(1) preparation of CNTs: One-dimensional carbon materials grown directly on substrate was researched using electrodeposited Ni and Fe as catalysts. And the results indicate that products are carbon fibres using electrodeposited Ni, and products are CNTs with high pure and quality using Fe as catalysts. Diameter of CNTs are even, and CNTs are excellent carrier using as nonenzymatic sensor and nenzymatic sensor.(2) S-Cu-Au/CNTs/C electrode were firstly preparation using carbon nanotubes grown directly on substrate as carrier by firstly spontaneous reduction Au and secondly electrodepositing Cu. Results indicate that catalytic capability of S-Cu-Au/CNTs/C electrode are excelled over Cu-Au catalysts by traditional technique. Detection extension of glucose is 1uM-4.8mM, and detection limit is 0.5 uM(3) AChE enzyme sensor were firstly preparation using carbon nanotubes grown directly on substrate as carrier, and condition of preparation and test for AChE enzyme sensor were investigated. Detection of dichlorvos,parathion,dimethoate were carried out using AchE sensor, detection extension:1×10-8-1×10-3(mol/L),1×10-7-1×10-3(mol/L),1×10-8-1×10-3(mol/L);detection limit:7.02×10-9mol/L,8.5×10-8mol/L,5.4×10-9 mol/L... |
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