Copper nanowire coated carbon fibers as efficient substrates for detecting designer drugs using SERS.
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 (10µm in diameter and 2mm 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 10-10-10-12M solutions). The copper nanowire modified carbon microfiber substrates could also find further applications in biomedical and environmental sensing.
Department of Analytical Chemistry, Palacky University, Faculty of Science, 17. listopadu 12, 771 46 Olomouc, Czechia; Department of Forensic Medicine and Medical Law, University Hospital Olomouc, Hnevotinska 3, 775 09 Olomouc, Czechia.
Vladimir
V
Halouzka
Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czechia.
Barbora
B
Halouzkova
Department of Analytical Chemistry, Palacky University, Faculty of Science, 17. listopadu 12, 771 46 Olomouc, Czechia.
David
D
Jirovsky
Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czechia.
Dusan
D
Hemzal
Department of Forensic Medicine and Medical Law, University Hospital Olomouc, Hnevotinska 3, 775 09 Olomouc, Czechia.
Peter
P
Ondra
Institute of Nanoscience and Nanotechnology, NCSR "Demokritos," 15310 Agia Paraskevi Attikis, Athens, Greece.
Eirini
E
Siranidi
Institute of Nanoscience and Nanotechnology, NCSR "Demokritos," 15310 Agia Paraskevi Attikis, Athens, Greece.
Athanassios G
AG
Kontos
Institute of Nanoscience and Nanotechnology, NCSR "Demokritos," 15310 Agia Paraskevi Attikis, Athens, Greece.
Polycarpos
P
Falaras
Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czechia.
Jan
J
Hrbac
D015374:Biosensing Techniques / Q000379:methods*; D002244:Carbon / Q000737:chemistry*; D000077482:Carbon Fiber; D003300:Copper / Q000737:chemistry*; D015198:Designer Drugs / Q000032:analysis*; D004566:Electrodes; D053770:Nanowires / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
D000077482:Carbon Fiber; D015198:Designer Drugs; D002244:Carbon; D003300:Copper
Carbon fiber; Copper nanowire; Designer drugs; Electrodeposition; SERS; SERS substrate