Hierarchically Driven IrO2 Nanowire Electrocatalysts for Direct Sensing of Biomolecules

Applying nanoscale device fabrications toward biomolecules, ultra sensitive, selective, robust, and reliable chemical or biological microsensors have been one of the most fascinating research directions in our life science. Here we introduce hierarchically driven iridium dioxide (IrO2) nanowires dir...

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Published inAnalytical chemistry (Washington) Vol. 84; no. 8; pp. 3827 - 3832
Main Authors Shim, Jun Ho, Lee, Yumin, Kang, Minkyung, Lee, Jaeyeon, Baik, Jeong Min, Lee, Youngmi, Lee, Chongmok, Kim, Myung Hwa
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 17.04.2012
Subjects
Analytical chemistry
Biological and medical sciences
Biosensing Techniques
Biosensors
Biotechnology
Catalysis
Chemistry
Electrochemical methods
Electrochemistry
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General, instrumentation
Hydrogen Peroxide - analysis
Iridium - chemistry
Limit of Detection
Methods. Procedures. Technologies
NAD - analysis
Nanowires - chemistry
Platinum - chemistry
Various methods and equipments
High performance
Hydrogen peroxide
Microsensor
Enzyme
Electrochemical method
Device
Adenine
Nanostructure
Chemical sensor
Electrochemical detector
Molecules
NADH
Platinum
Biosensor
Amperometry
Iridium
Detection
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Summary:Applying nanoscale device fabrications toward biomolecules, ultra sensitive, selective, robust, and reliable chemical or biological microsensors have been one of the most fascinating research directions in our life science. Here we introduce hierarchically driven iridium dioxide (IrO2) nanowires directly on a platinum (Pt) microwire, which allows a simple fabrication of the amperometric sensor and shows a favorable electronic property desired for sensing of hydrogen peroxide (H2O2) and dihydronicotinamide adenine dinucleotide (NADH) without the aid of enzymes. This rational engineering of a nanoscale architecture based on the direct formation of the hierarchical 1-dimensional (1-D) nanostructures on an electrode can offer a useful platform for high-performance electrochemical biosensors, enabling the efficient, ultrasensitive detection of biologically important molecules.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac300573b