Electrochemical reduction of graphene oxide in electrically conducting poly(3,4-ethylenedioxythiophene) composite films

Lindfors, Tom; Österholm, Anna M.; Kauppila, Jussi; Pesonen, Markus

doi:10.1016/j.electacta.2013.03.070

Cited by 46 publications

(48 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This demonstrates that the reduction of surface-oxygenated species occurs quickly and irreversibly at the surface of GO modified SPE. This is in agreement with some other reports [16,19]. Electrochemical reduction of GO in GO-PAH mixture deposited onto the electrode surface has some clear advantages.…”

Section: Cyclic Voltammetrysupporting

confidence: 93%

“…The surface of working electrode of SPE modified by depositing of 5 μL of the GO-PAH suspension was left 24 h to dry at the room temperature. The electrochemical reduction of GO was carried out by cycling the potential in oxygen-free KCl 0.1 M between -1 V and 0.5 V (ν = 10 mVs −1 , 10 cycles) [16].…”

Section: Equipments and Materialsmentioning

confidence: 99%

“…For instance, chemical reduction of GO to RGO was realized in the presence of AA [11], hydrazine [12,13], malt [14]. In situ preparation of RGO was possible by electrochemical reduction at constant potential [15,16] or by cycling the potential [17][18][19]. Compared with chemical reduction of GO the electrochemical approach has some clear advantages: it is simple, fast, environmental friendly.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

2015

View full text Add to dashboard Cite

We describe a new type of NADH sensor based on a screen-printed electrode (SPE) modified with reduced graphene oxide (RGO) and poly(allylamine hydrochloride) (PAH). A mixture of graphene oxide (GO) and PAH was deposited on the surface of a carbon working electrode, and RGO was prepared in-situ by electrochemical reduction of GO. The oxidation peak of NADH was recorded at +450 mV (vs. silver pseudo-reference). Under optimized conditions, the electrode exhibits high electrocatalytic activity toward NADH oxidation, expressed by a high rate constant and a stable response up to 0.8 mM concentrations. The sensitivity is 108.6 μA·mM −1 ·cm −2 , the response time is 20 s (for 95 % of the steady state current), and the detection limit is 6.6 μM (at an S/N ratio of 3). A peak separation of about 300 mV was achieved in differential pulse voltammetric determination of NADH in the presence of ascorbic acid. This makes the new sensor a useful tool with potential analytical application in different dehydrogenase based systems.

show abstract

Section: Cyclic Voltammetrysupporting

confidence: 93%

Section: Equipments and Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

2015

View full text Add to dashboard Cite

show abstract

“…The incorporation of GO in the PNMA matrix was further confirmed with XPS measurements showing the presence of the peak centered at 286.8 eV originating from C-O groups of GO (epoxy and alkoxy) (Fig. 3b) [8].…”

supporting

confidence: 53%

“…Another reduction approach was used in these studies to transform GO to rGO. First, the PNMA-ClO 4 -GO film was electrochemically reduced in oxygen-free 0.1 M KNO 3 for 10 min at -0.94 V [8,9]. The CVs of the PNMA-ClO 4 -GO film before and after the electrochemical reduction showed that the composite film withstands the reduction without losing its electroactivity ( (Fig.…”

mentioning

confidence: 99%

Enhanced electron transfer in composite films of reduced graphene oxide and poly(N-methylaniline)

Lindfors

Österholm

Kauppila

et al. 2013

Carbon

Self Cite

View full text Add to dashboard Cite

Poly(N-methylaniline) (PNMA) has been electropolymerized for the first time from a graphene oxide (GO) dispersion containing 1.0 M HClO 4 . Both GO and perchlorate were incorporated in the PNMA matrix during the electropolymerization resulting in the formation of a mixed composite material of PNMA-ClO 4 and PNMA-GO. Under the acidic polymerization conditions, the carboxylic groups of GO are undissociated and GO is therefore mostly mechanically entrapped in the PNMA matrix while perchlorate functions as the primary charge compensating ion. Electrochemical reduction at -0.85 V improved the electron transfer of the composite film due to reduction of GO in the PNMA matrix.

show abstract

Potential Cycling Stability of Composite Films of Graphene Derivatives and Poly(3,4‐ethylenedioxythiophene)

Lindfors

2015

Electroanalysis

Self Cite

View full text Add to dashboard Cite

The potential cycling stability is compared for poly(3,4‐ethylenedioxythiophene) (PEDOT) composite films prepared either with graphene oxide (GO), reduced GO (RGO) or poly(styrenesulfonate) (PSS). It is shown that PEDOT‐GO had reversible redox behavior and fast charging/discharging with at least equal electrochemical properties to PEDOT‐PSS. 10 000 potential cycles between −0.5–0.5 V in the three‐electrode cell decreased the anodic charge of PEDOT‐GO with 6.2 %. In the two‐electrode cell, the decrease was only 5.4 % between 0–0.7 V. The potential cycling stability of PEDOT‐GO and PEDOT‐RGO prepared electrochemically without other additives than GO has not been previously reported.

show abstract

Electrochemical reduction of graphene oxide in electrically conducting poly(3,4-ethylenedioxythiophene) composite films

Cited by 46 publications

References 36 publications

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

Enhanced electron transfer in composite films of reduced graphene oxide and poly(N-methylaniline)

Potential Cycling Stability of Composite Films of Graphene Derivatives and Poly(3,4‐ethylenedioxythiophene)

Contact Info

Product

Resources

About