2017
About graphene oxide
KUBESA, Ondřej, Karel LACINA, Veronika HORÁČKOVÁ a Petr SKLÁDALZákladní údaje
Originální název
About graphene oxide
Autoři
Vydání
CEITEC PhD Retreat II, 2017
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Organizační jednotka
Středoevropský technologický institut
ISBN
978-80-210-8550-3
Příznaky
Mezinárodní význam
Změněno: 16. 5. 2017 15:15, Mgr. Veronika Horáčková, Ph.D.
Anotace
V originále
Popularity of graphene oxide (GO) became ballistic in the last few years – in short, it almost seems that now everyone wants to work with graphene. However, as the number of electrochemical papers about graphene grows, so is the amount of misinterpretations. Our work was mostly focused on preparation of GO and its electrochemical properties, namely catalysis. Our results show, that chemical preparation of GO by strong oxidation is very tricky. Several approaches were tested, such as different sizes of graphite particles, oxidation mixtures, even repetitive preparations under the same conditions usually resulted in different products. Another big topic are impurities which are present due to natural occurrence in graphite and some of them might be also introduced during purification processes of GO. This could also lead to often observed catalytic activity of graphene. From our observations neither selectivity nor significant electrocatalytic abilities of the reduced graphene oxide modified electrodes towards H2O2 were observed. Moreover, our results suggest that GO does not need linking molecules in order to be deposited onto the surface of the electrodes, since it attaches spontaneously and keeps its electrochemical properties. Graphene is usually reported as a superior material, but its proper description and characterization should not be underestimated.
Návaznosti
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