Original scientific paper
https://doi.org/10.15255/KUI.2023.019
Incorporation of Graphene Oxide into the Conductive Polymer Layer and Its Electrochemical Reduction
Gabrijela Ljubek
orcid.org/0000-0001-5842-5915
; University of Zagreb Faculty of Mining, Geology and Petroleum Engineering, Pierottijeva 6, 10 000 Zagreb, Croatia
Marijana Kraljić Roković
; University of Zagreb Faculty of Chemical Engineering and Technology, Trg Marka Marulića 19, 10 000 Zagreb, Croatia
Hrvoje Trinki
; University of Zagreb Faculty of Chemical Engineering and Technology, Trg Marka Marulića 19, 10 000 Zagreb, Croatia
Abstract
The aim of this work was to prepare poly(3,4-ethylenedioxythiophene) (PEDOT) layer and a PEDOT/graphene oxide (GO) composite layer by electrochemical polymerisation. The synthesis was carried out from an electrolyte containing 3,4-ethylenedioxyphene (EDOT) in a solution of poly(sodium 4-styrenesulfonate) (PSS) or a mixture of PSS/GO. The results showed that PEDOT layer were successfully synthesised by applying a potential of 1.00 V during 600 s. It was concluded that the optimal concentration of PSS is 0.01 mol dm–3. The incorporation of GO in the polymer layers was proven by the UV/Vis spectroscopy. PEDOT/GO layer was polarised at the potential of −1.4 V in 0.1 mol dm–3 KCl solution to reduce GO within the polymer layer. The polarisation at negative potentials resulted in improved pseudocapacitive properties of the PEDOT layer, which proves the successful electrochemical reduction of GO. Obtained layers were characterised by cyclic voltammetry.
Keywords
electropolymerisation; graphene oxide; poly(3,4-ethylenedioxythiophene); polyelectrolyte reduced graphene oxide
Hrčak ID:
313287
URI
Publication date:
18.1.2024.
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