Abstract
The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of approximately 0.13 V (versus Ag/AgCl) with the linear range of 4-100 microM by differential pulse voltammetry.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Acrylic Resins / chemistry*
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Biosensing Techniques / instrumentation*
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Biosensing Techniques / methods
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Coated Materials, Biocompatible / chemistry
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Diffusion
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Electrochemistry / instrumentation*
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Electrochemistry / methods
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Equipment Design
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Equipment Failure Analysis
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Hydrogen-Ion Concentration
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Materials Testing
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Microelectrodes
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NAD / analysis*
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NAD / chemistry
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Nanotubes, Carbon / chemistry*
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Nanotubes, Carbon / ultrastructure
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Particle Size
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Reproducibility of Results
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Sensitivity and Specificity
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Water / chemistry*
Substances
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Acrylic Resins
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Coated Materials, Biocompatible
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Nanotubes, Carbon
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Water
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NAD
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carbopol 940