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Composition-selective fabrication of ordered intermetallic Au-Cu nanowires and their application to nano-size electrochemical glucose detection
- Source :
- Nanotechnology. 26(24)
- Publication Year :
- 2015
-
Abstract
- Bimetallic nanostructures can provide distinct and improved physicochemical properties by the coupling effect of the two metal components, making them promising materials for a variety of applications. Herein, we report composition-selective fabrication of ordered intermetallic Au-Cu nanowires (NWs) by two-step chemical vapor transport method and their application to nano-electrocatalytic glucose detection. Ordered intermetallic Au3Cu and AuCu3 NWs are topotaxially fabricated by supplying Cu-containing chemicals to pre-synthesized single-crystalline Au NW arrays. The composition of fabricated Au-Cu NWs can be selected by changing the concentration of Cu-containing species. Interestingly, Au3Cu NW electrodes show unique electrocatalytic activity for glucose oxidation, allowing us to detect glucose without interference from ascorbic acid. Such interference-free detection of glucose is attributed to the synergistic effect, induced by incorporation of Cu in Au. We anticipate that Au3Cu NWs could show possibility as efficient nano-size electrochemical glucose sensors and the present fabrication method can be employed to fabricate valuable ordered intermetallic nanostructures.
- Subjects :
- Materials science
Nanostructure
Fabrication
Nanowires
Mechanical Engineering
Nanowire
Intermetallic
Bioengineering
Nanotechnology
General Chemistry
Biosensing Techniques
Electrochemical Techniques
Electrochemistry
Ascorbic acid
Glucose
Nanocrystal
Mechanics of Materials
Electrode
General Materials Science
Gold
Electrical and Electronic Engineering
Oxidation-Reduction
Copper
Subjects
Details
- ISSN :
- 13616528
- Volume :
- 26
- Issue :
- 24
- Database :
- OpenAIRE
- Journal :
- Nanotechnology
- Accession number :
- edsair.doi.dedup.....3b981ddc1831a8e5b1dd4bc343130cc9