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Statements

Subject Item
n2:RIV%2F68081731%3A_____%2F14%3A00431823%21RIV15-MPO-68081731
rdf:type
n5:Vysledek skos:Concept
dcterms:description
The article compares the determination of an SPE (Screen Printed Electrodes) electrochemical active surface (AS) by the analysis of cyclic voltammogram in ferro-ferricyanide using Koutecky equation and by confocal and electron microscopy. SPE reliability is influenced by mass transport of analyte to active electrode surface while the physical properties of SPE are reproducible and stable. The electrode reaction involves the upper layer of SPE. The AS is the same as the geometrical area. Other methods set the active/geometrical area relation to 2,03 +/- 0,04 (gold working electrode) and 4,35 +/- 0,08 (platinum working electrode). It is demonstrated that nanostructures on working electrode surface can be efficient at high frequencies (> 10 kHz). The active area of SPE determined by scanning electron microscopy or optical measurement exhibits a standard deviation lower than 2%. It proves SPE be reliable and precise electrochemical device under optimal hydrodynamic conditions. The article compares the determination of an SPE (Screen Printed Electrodes) electrochemical active surface (AS) by the analysis of cyclic voltammogram in ferro-ferricyanide using Koutecky equation and by confocal and electron microscopy. SPE reliability is influenced by mass transport of analyte to active electrode surface while the physical properties of SPE are reproducible and stable. The electrode reaction involves the upper layer of SPE. The AS is the same as the geometrical area. Other methods set the active/geometrical area relation to 2,03 +/- 0,04 (gold working electrode) and 4,35 +/- 0,08 (platinum working electrode). It is demonstrated that nanostructures on working electrode surface can be efficient at high frequencies (> 10 kHz). The active area of SPE determined by scanning electron microscopy or optical measurement exhibits a standard deviation lower than 2%. It proves SPE be reliable and precise electrochemical device under optimal hydrodynamic conditions.
dcterms:title
Effective Surface Area of Electrochemical Sensors Effective Surface Area of Electrochemical Sensors
skos:prefLabel
Effective Surface Area of Electrochemical Sensors Effective Surface Area of Electrochemical Sensors
skos:notation
RIV/68081731:_____/14:00431823!RIV15-MPO-68081731
n3:aktivita
n12:P n12:I
n3:aktivity
I, P(FR-TI1/076), P(FR-TI1/118)
n3:cisloPeriodika
6
n3:dodaniDat
n14:2015
n3:domaciTvurceVysledku
n13:7440766 n13:2608944
n3:druhVysledku
n9:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
13640
n3:idVysledku
RIV/68081731:_____/14:00431823
n3:jazykVysledku
n8:eng
n3:klicovaSlova
scanning electron microscopy; glassy-carbon electrode; gold electrodes; biosensors
n3:klicoveSlovo
n6:biosensors n6:glassy-carbon%20electrode n6:scanning%20electron%20microscopy n6:gold%20electrodes
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[144FB0E0DAD3]
n3:nazevZdroje
Journal of the Electrochemical Society
n3:obor
n11:JB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
7
n3:projekt
n16:FR-TI1%2F118 n16:FR-TI1%2F076
n3:rokUplatneniVysledku
n14:2014
n3:svazekPeriodika
161
n3:tvurceVysledku
Sajdlová, Z. Vránová, H. Neděla, Vilém Šejnohová, R. Flodrová, Eva Krejčí, J. Plička, R.
n3:wos
000339508600060
s:issn
0013-4651
s:numberOfPages
4
n15:doi
10.1149/2.091406jes