Electrochemical template-free synthesis of nanofibrous polyaniline modified electrode for ascorbic acid determination
Authors
Popović, NatašaJugović, Branimir

Jokić, Bojan

Knežević Jugović, Zorica

Stevanović, Jasmina S.

Grgur, Branimir

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 ~ 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 ~ 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. © 2015 The Authors.
Keywords:
ascorbic acid / electrocatalysis / electrochemical polymerization / nanofibres / polyanilineSource:
International Journal of Electrochemical Science, 2015, 10, 2, 1208-1220Publisher:
- Belgrade : ESG
Funding / projects:
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Popović, Nataša AU - Jugović, Branimir AU - Jokić, Bojan AU - Knežević Jugović, Zorica AU - Stevanović, Jasmina S. AU - Grgur, Branimir AU - Gvozdenović, Milica M. PY - 2015 UR - https://dais.sanu.ac.rs/123456789/3543 UR - http://www.electrochemsci.org/papers/vol10/100201208.pdf 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 ~ 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 ~ 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. © 2015 The Authors. PB - Belgrade : ESG T2 - International Journal of Electrochemical Science T1 - Electrochemical template-free synthesis of nanofibrous polyaniline modified electrode for ascorbic acid determination SP - 1208 EP - 1220 VL - 10 IS - 2 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 S. and Grgur, Branimir 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 ~ 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 ~ 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. © 2015 The Authors.", publisher = "Belgrade : ESG", journal = "International Journal of Electrochemical Science", title = "Electrochemical template-free synthesis of nanofibrous polyaniline modified electrode for ascorbic acid determination", pages = "1208-1220", volume = "10", number = "2", url = "https://hdl.handle.net/21.15107/rcub_dais_3543" }
Popović, N., Jugović, B., Jokić, B., Knežević Jugović, Z., Stevanović, J. S., Grgur, B.,& Gvozdenović, M. M.. (2015). Electrochemical template-free synthesis of nanofibrous polyaniline modified electrode for ascorbic acid determination. in International Journal of Electrochemical Science Belgrade : ESG., 10(2), 1208-1220. https://hdl.handle.net/21.15107/rcub_dais_3543
Popović N, Jugović B, Jokić B, Knežević Jugović Z, Stevanović JS, Grgur B, 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 S., Grgur, Branimir, 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 .