Contrasts between Mild and Harsh Oxidation of Carbon Nanotubes in terms of their Properties and Electrochemical Performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901904" target="_blank" >RIV/60461373:22310/16:43901904 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/celc.201600082/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/celc.201600082/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/celc.201600082" target="_blank" >10.1002/celc.201600082</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Contrasts between Mild and Harsh Oxidation of Carbon Nanotubes in terms of their Properties and Electrochemical Performance

Popis výsledku v původním jazyce

Fundamental studies and electrochemical applications of carbon nanotubes (CNTs) have impacted a wide range of disciplines. A key issue for CNT electrochemistry is to understand how the physical, chemical, and electronic properties of different CNT materials affect their electrochemical performance. We investigate the differences arising from CNTs undergoing mild (H2O2) or harsh (HNO3) oxidation processes. Morphological assessment and chemical characterization of CNT materials revealed that HNO3 treatment (CNT-HNO3) was effective in removing a large part of the metallic impurities, whereas H2O2 treatment (CNT-H2O2) was more proficient in eliminating carbonaceous imperfections in the starting CNT material (CNTprist). We investigated the electrocatalytic and electron-transfer properties of CNTprist and oxidized CNTs on a variety of electrochemical probes, which are sensitive to carbon surfaces as well as its oxygen-containing groups and/or metallic impurities. Electrochemical results show that, for the studied molecules, CNTprist and CNT-H2O2 exhibit mostly indistinguishable performances, whereas CNT-HNO3 yields an improved performance.

Název v anglickém jazyce

Contrasts between Mild and Harsh Oxidation of Carbon Nanotubes in terms of their Properties and Electrochemical Performance

Popis výsledku anglicky

Fundamental studies and electrochemical applications of carbon nanotubes (CNTs) have impacted a wide range of disciplines. A key issue for CNT electrochemistry is to understand how the physical, chemical, and electronic properties of different CNT materials affect their electrochemical performance. We investigate the differences arising from CNTs undergoing mild (H2O2) or harsh (HNO3) oxidation processes. Morphological assessment and chemical characterization of CNT materials revealed that HNO3 treatment (CNT-HNO3) was effective in removing a large part of the metallic impurities, whereas H2O2 treatment (CNT-H2O2) was more proficient in eliminating carbonaceous imperfections in the starting CNT material (CNTprist). We investigated the electrocatalytic and electron-transfer properties of CNTprist and oxidized CNTs on a variety of electrochemical probes, which are sensitive to carbon surfaces as well as its oxygen-containing groups and/or metallic impurities. Electrochemical results show that, for the studied molecules, CNTprist and CNT-H2O2 exhibit mostly indistinguishable performances, whereas CNT-HNO3 yields an improved performance.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

ChemElectroChem

ISSN

2196-0216

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

1713-1719

Kód UT WoS článku

000388377200024

EID výsledku v databázi Scopus

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