Detailed Information on Publication Record
2017
Glucose sensing on graphite screen-printed electrode modified by sparking of copper nickel alloys
RIMAN, Daniel, Konstantinos SPYROU, AE KARANTZALIS, Jan HRBÁČ, MI PRODROMIDIS et. al.Basic information
Original name
Glucose sensing on graphite screen-printed electrode modified by sparking of copper nickel alloys
Authors
RIMAN, Daniel (203 Czech Republic), Konstantinos SPYROU (300 Greece), AE KARANTZALIS (300 Greece), Jan HRBÁČ (203 Czech Republic, guarantor, belonging to the institution) and MI PRODROMIDIS (300 Greece)
Edition
Talanta, AMSTERDAM, ELSEVIER SCIENCE BV, 2017, 0039-9140
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10405 Electrochemistry
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 4.244
RIV identification code
RIV/00216224:14310/17:00096413
Organization unit
Faculty of Science
UT WoS
000394064700066
Keywords in English
Sparked electrodes; Green method; Mixed copper nickel nanoparticles; Non enzymatic glucose sensor; Screen-printed electrodes
Změněno: 4/4/2018 11:56, Ing. Nicole Zrilić
Abstract
V originále
Electric spark discharge was employed as a green, fast and extremely facile method to modify disposable graphite screen-printed electrodes (SPEs) with copper, nickel and mixed copper/nickel nanoparticles (NPs) in order to be used as nonenzymatic glucose sensors. Direct SPEs-to-metal (copper, nickel or copper/nickel alloys with 25/75, 50/50 and 75/25 wt% compositions) sparking at 1.2 kV was conducted in the absence of any solutions under ambient conditions. Morphological characterization of the sparked surfaces was performed by scanning electron microscopy, while the chemical composition of the sparked NPs was evaluated with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The performance of the various sparked SPEs towards the electro oxidation of glucose in alkaline media and the critical role of hydroxyl ions were evaluated with cyclic voltammetry and kinetic studies. Results indicated a mixed charge transfer- and hyroxyl ion transport-limited process. Best performing sensors fabricated by Cu/Ni 50/50 wt% alloy showed linear response over the concentration range 2-400 mu M glucose and they were successfully applied to the amperometric determination of glucose in blood. The detection limit (S/N 3) and the relative standard deviation of the method were 0.6 mu M and < 6% (n=5, 2 mu M glucose), respectively. Newly devised sparked Cu/Ni graphite SPEs enable glucose sensing with distinct advantages over existing glucose chemical sensors in terms of cost, fabrication simplicity, disposability, and adaptation of green methods in sensor's development.