Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73594908" target="_blank" >RIV/61989592:15310/19:73594908 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/19:43918529

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201800675" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201800675</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/celc.201800675" target="_blank" >10.1002/celc.201800675</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

Popis výsledku v původním jazyce

Well-defined, stoichiometric derivatives of graphene afford many opportunities in fine-tuning of graphene properties and hence, extend the application potential of this material. Here, we present the electrochemical properties of cyanographene (G-CN), and graphene acid (G-COOH) in order to understand the role of the covalently attached functional groups on the graphene sheet in electrochemical sensing for the detection of biomarkers. G-CN shows better performance for the negatively charged analytes ascorbic and uric acids when compared to G-COOH. The less-favourable performance of G-COOH is explained by repulsion between negatively charged analytes and negatively charged functional groups of G-COOH. The capacitance of both materials is in a comparable range, but chronopotentiometry reveals that G-CN shows a greater capacitance than G-COOH. The identified differences in electrochemical properties imprinted by the functional group show that its chemical nature can be exploited in fine-tuning of the selectivity of electrochemical sensing and energy storage applications.

Název v anglickém jazyce

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

Popis výsledku anglicky

Well-defined, stoichiometric derivatives of graphene afford many opportunities in fine-tuning of graphene properties and hence, extend the application potential of this material. Here, we present the electrochemical properties of cyanographene (G-CN), and graphene acid (G-COOH) in order to understand the role of the covalently attached functional groups on the graphene sheet in electrochemical sensing for the detection of biomarkers. G-CN shows better performance for the negatively charged analytes ascorbic and uric acids when compared to G-COOH. The less-favourable performance of G-COOH is explained by repulsion between negatively charged analytes and negatively charged functional groups of G-COOH. The capacitance of both materials is in a comparable range, but chronopotentiometry reveals that G-CN shows a greater capacitance than G-COOH. The identified differences in electrochemical properties imprinted by the functional group show that its chemical nature can be exploited in fine-tuning of the selectivity of electrochemical sensing and energy storage applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

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

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

ChemElectroChem

ISSN

2196-0216

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

229-234

Kód UT WoS článku

000454705900027

EID výsledku v databázi Scopus

2-s2.0-85050646298