Copper nanowire coated carbon fibers as efficient substrates for detecting designer drugs using SERS

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Authors	HALOUZKA Vladimír HALOUZKOVÁ Barbora Agatha JIROVSKY David HEMZAL Dušan ONDRA Petr SIRANIDI Eirini KONTOS Athanassios G FALARAS Polycarpos HRBÁČ Jan
Year of publication	2017
Type	Article in Periodical
Magazine / Source	Talanta
MU Faculty or unit	Faculty of Science
Citation
Doi	http://dx.doi.org/10.1016/j.talanta.2016.12.084
Field	Electrochemistry
Keywords	ENHANCED RAMAN-SCATTERING; PSYCHOACTIVE SUBSTANCES; LEGAL HIGHS; SURFACE; SPECTROSCOPY; NANOSTRUCTURES; IDENTIFICATION; FABRICATION; WAVELENGTH; ANALOGS
Description	Miniature Surface Enhanced Raman Scattering (SERS) sensors were fabricated by coating the carbon fiber microelectrodes with copper nanowires. The coating procedure, based on anodizing the copper wire in ultrapure water followed by cathodic deposition of the anode-derived material onto carbon fiber electrodes, provides a "clean" copper nanowire network. The developed miniature (10 mu m in diameter and 2 mm in length) and nanoscopically rough SERS substrates are applicable in drug sensing, as shown by the detection and resolving of a range of seized designer drugs in trace amounts (microliter volumes of 10(-10)-10(-12) M solutions). The copper nanowire modified carbon microfiber substrates could also find further applications in biomedical and environmental sensing.
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