About: Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection

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About: Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Nanočástice různých forem oxidů železa (hematit, maghemit, amorfní Fe2O3, beta-Fe2O3 and ferrihydrit) inkorporované do uhlíkové pasty vykazují elektrokatalytické účinky pro redukci peroxidu vodíku. (cs) In this study we show that nanoparticles of various ferric oxides (hematite, maghemitc, amorphous Fe2O3, beta-Fe2O3 and ferrihydrite) incorporated into carbon paste exhibit electro-catalytic properties towards hydrogen peroxide reduction. The modified paste electrode performances were evaluated and compared with those obtained with Prussian Blue-modified carbon paste electrode, which represents an excellent chemical mediator towards the H2O redox reaction (as widely described in literature). The best catalytic activity was found for carbon paste modified by amorphous ferric oxide with 2 - 4 nm particle size, which was further tested for possible application as hydrogen peroxide sensor. At pH 7, the limit of detection was 2 x 10(-5) M H2O2 (S/N = 3), the calibration curves were linear upto 8.5 mM H2O2 (R-2= 0.998), the measurement reproducibility (RSD = 97%, n = 4), the interelectrode reproducibility (RSD = 16%, n(electrodes) = 5) and < 3 s response time. In this study we show that nanoparticles of various ferric oxides (hematite, maghemitc, amorphous Fe2O3, beta-Fe2O3 and ferrihydrite) incorporated into carbon paste exhibit electro-catalytic properties towards hydrogen peroxide reduction. The modified paste electrode performances were evaluated and compared with those obtained with Prussian Blue-modified carbon paste electrode, which represents an excellent chemical mediator towards the H2O redox reaction (as widely described in literature). The best catalytic activity was found for carbon paste modified by amorphous ferric oxide with 2 - 4 nm particle size, which was further tested for possible application as hydrogen peroxide sensor. At pH 7, the limit of detection was 2 x 10(-5) M H2O2 (S/N = 3), the calibration curves were linear upto 8.5 mM H2O2 (R-2= 0.998), the measurement reproducibility (RSD = 97%, n = 4), the interelectrode reproducibility (RSD = 16%, n(electrodes) = 5) and < 3 s response time. (en)
Title	Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection (en) Uhlíkové elektrody modifikované nanočásticemi Fe2O3 jako chemické senzory pro detekci peroxidu vodíku (cs)
skos:prefLabel	Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection Carbon electrodes modified by nanoscopic iron(III) oxides to assemble chemical sensors for the hydrogen peroxide amperometric detection (en) Uhlíkové elektrody modifikované nanočásticemi Fe2O3 jako chemické senzory pro detekci peroxidu vodíku (cs)
skos:notation	RIV/61989592:15310/07:00004706!RIV08-MSM-15310___
http://linked.open.../vavai/riv/strany	1850-1854
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1M0512), Z(MSM6198959218)
http://linked.open...iv/cisloPeriodika	17
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Zbořil, Radek Hrbáč, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	412621
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/07:00004706
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nanoparticles; ferric oxide; iron oxide; hydrogen peroxide; sensors; biosensors; modified electrodes (en)
http://linked.open.../riv/klicoveSlovo	iron oxide nanoparticles sensors biosensors hydrogen peroxide ferric oxide modified electrodes
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[1CDE3FEE62E9]
http://linked.open...i/riv/nazevZdroje	Electroanalysis
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Research center of powdered nanomaterials
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	19
http://linked.open...iv/tvurceVysledku	Zbořil, Radek Hrbáč, Jan Halouzka, Vladimír Papadopoulos, Kyriakos Triantis, Theodor
http://linked.open...n/vavai/riv/zamer	Komplexní sloučeniny a oxidy přechodných kovů s využitím v bioaplikacích a nanotechnologiích
issn	1040-0397
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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