Glucose sensing on graphite screen-printed electrode modified by sparking of copper nickel alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73583553" target="_blank" >RIV/61989592:15310/17:73583553 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/17:00096413

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S003991401631013X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S003991401631013X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.talanta.2016.12.064" target="_blank" >10.1016/j.talanta.2016.12.064</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Glucose sensing on graphite screen-printed electrode modified by sparking of copper nickel alloys

Popis výsledku v původním jazyce

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 &lt; 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&apos;s development.

Název v anglickém jazyce

Glucose sensing on graphite screen-printed electrode modified by sparking of copper nickel alloys

Popis výsledku anglicky

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 &lt; 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&apos;s development.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA15-05198S" target="_blank" >GA15-05198S: Nanostrukturované kovové vrstvy na vodivých a polovodivých substrátech pro aplikace v chemické a biomedicínské analýze</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Talanta

ISSN

0039-9140

e-ISSN

—

Svazek periodika

165

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

466-473

Kód UT WoS článku

000394064700066

EID výsledku v databázi Scopus

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