Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination
Authors
Popović, NatašaJugović, Branimir

Jokić, Bojan

Knežević-Jugović, Zorica

Stevanović, Jasmina

Grgur, Branimir N.

Gvozdenović, Milica M.

Article (Published version)

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Electrochemical formation of polyaniline (PANI) modified electrode was performed galvanostatically from aqueous solution of 1.0 mol dm(-3) HCl containing 0.2 mol dm(-3) aniline at current densities ranging from 0.5-3.0 mA cm(-2). The morphology of PANI electrode consisted of highly developed nanofibrous network with electrocatalytic features towards oxidation of ascorbic acid, reflected in increase of the peak current similar to 2.5 times and shift of the oxidation potential by 0.32 V to less positive values. Response of PANI modified electrode was obtained from anodic LSV curves. Current peak potentials decreased with increase of pH with slope of similar to 32 mV pH(-1), indicating two electron charge transfer process with liberation of one proton characteristic of an electrochemical reaction followed by a chemical step.
Keywords:
electrochemical polymerization / polyaniline / nanofibres / ascorbic acid / electrocatalysisSource:
International Journal of Electrochemical Science, 2015, 10, 2, 1208-1220Publisher:
- Electrochemical Science Group
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IHTMTY - JOUR AU - Popović, Nataša AU - Jugović, Branimir AU - Jokić, Bojan AU - Knežević-Jugović, Zorica AU - Stevanović, Jasmina AU - Grgur, Branimir N. AU - Gvozdenović, Milica M. PY - 2015 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1743 AB - Electrochemical formation of polyaniline (PANI) modified electrode was performed galvanostatically from aqueous solution of 1.0 mol dm(-3) HCl containing 0.2 mol dm(-3) aniline at current densities ranging from 0.5-3.0 mA cm(-2). The morphology of PANI electrode consisted of highly developed nanofibrous network with electrocatalytic features towards oxidation of ascorbic acid, reflected in increase of the peak current similar to 2.5 times and shift of the oxidation potential by 0.32 V to less positive values. Response of PANI modified electrode was obtained from anodic LSV curves. Current peak potentials decreased with increase of pH with slope of similar to 32 mV pH(-1), indicating two electron charge transfer process with liberation of one proton characteristic of an electrochemical reaction followed by a chemical step. PB - Electrochemical Science Group T2 - International Journal of Electrochemical Science T1 - Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination VL - 10 IS - 2 SP - 1208 EP - 1220 UR - https://hdl.handle.net/21.15107/rcub_dais_3543 ER -
@article{ author = "Popović, Nataša and Jugović, Branimir and Jokić, Bojan and Knežević-Jugović, Zorica and Stevanović, Jasmina and Grgur, Branimir N. and Gvozdenović, Milica M.", year = "2015", abstract = "Electrochemical formation of polyaniline (PANI) modified electrode was performed galvanostatically from aqueous solution of 1.0 mol dm(-3) HCl containing 0.2 mol dm(-3) aniline at current densities ranging from 0.5-3.0 mA cm(-2). The morphology of PANI electrode consisted of highly developed nanofibrous network with electrocatalytic features towards oxidation of ascorbic acid, reflected in increase of the peak current similar to 2.5 times and shift of the oxidation potential by 0.32 V to less positive values. Response of PANI modified electrode was obtained from anodic LSV curves. Current peak potentials decreased with increase of pH with slope of similar to 32 mV pH(-1), indicating two electron charge transfer process with liberation of one proton characteristic of an electrochemical reaction followed by a chemical step.", publisher = "Electrochemical Science Group", journal = "International Journal of Electrochemical Science", title = "Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination", volume = "10", number = "2", pages = "1208-1220", url = "https://hdl.handle.net/21.15107/rcub_dais_3543" }
Popović, N., Jugović, B., Jokić, B., Knežević-Jugović, Z., Stevanović, J., Grgur, B. N.,& Gvozdenović, M. M.. (2015). Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination. in International Journal of Electrochemical Science Electrochemical Science Group., 10(2), 1208-1220. https://hdl.handle.net/21.15107/rcub_dais_3543
Popović N, Jugović B, Jokić B, Knežević-Jugović Z, Stevanović J, Grgur BN, Gvozdenović MM. Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination. in International Journal of Electrochemical Science. 2015;10(2):1208-1220. https://hdl.handle.net/21.15107/rcub_dais_3543 .
Popović, Nataša, Jugović, Branimir, Jokić, Bojan, Knežević-Jugović, Zorica, Stevanović, Jasmina, Grgur, Branimir N., Gvozdenović, Milica M., "Electrochemical Template-Free Synthesis of Nanofibrous Polyaniline Modified Electrode for Ascorbic Acid Determination" in International Journal of Electrochemical Science, 10, no. 2 (2015):1208-1220, https://hdl.handle.net/21.15107/rcub_dais_3543 .