Influence of oxidation stage and exfoliation extent of carbon-based materials on electrochemical detection of As(III)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of oxidation stage and exfoliation extent of carbon-based materials on electrochemical detection of As(III)

Popis výsledku v původním jazyce

This study deals with the electrochemical detection of As(III) and especially with its in-teraction with carbon-based materials such as graphene oxide, graphite oxide and partially reduced graphene oxide in connection with the adsorption of As(III) to their surface. Using differential pulse voltammetry, it was found that the As(III) reaches the best adsorption efficiency on the carbon-based materials surfaces at very acidic pH after interaction time 1 hour. We decided to use this promising ability of graphene oxide to design a new method for As(III) detection using a modified glassy carbon electrode. In order to enable detection of As(III) the surface of glassy carbon electrode was firstly modified by gold nanoparticles (AuNPs). After this step the working electrode was modified for a second time by graphene oxide to enhance the electrochemical signal of As(III). Compared to the working electrode modified only by gold nanoparticles, the electrochemical signal of As(III) on the GCE/AuNP

Název v anglickém jazyce

Influence of oxidation stage and exfoliation extent of carbon-based materials on electrochemical detection of As(III)

Popis výsledku anglicky

This study deals with the electrochemical detection of As(III) and especially with its in-teraction with carbon-based materials such as graphene oxide, graphite oxide and partially reduced graphene oxide in connection with the adsorption of As(III) to their surface. Using differential pulse voltammetry, it was found that the As(III) reaches the best adsorption efficiency on the carbon-based materials surfaces at very acidic pH after interaction time 1 hour. We decided to use this promising ability of graphene oxide to design a new method for As(III) detection using a modified glassy carbon electrode. In order to enable detection of As(III) the surface of glassy carbon electrode was firstly modified by gold nanoparticles (AuNPs). After this step the working electrode was modified for a second time by graphene oxide to enhance the electrochemical signal of As(III). Compared to the working electrode modified only by gold nanoparticles, the electrochemical signal of As(III) on the GCE/AuNP

Druh

D - Stať ve sborníku

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Metallomics Technology Conference 2015. Recent Advances and Strategies: Conference Proceedings

ISBN

978-80-7509-309-7

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

40-44

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

14. 6. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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