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Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique

This paper describes a series of electrochemical measurements design to explore the reactivity of the oxide superconductor, DyBa2Cu3O7-δ (DyBCO). The reproducible voltammetry was obtained in the potential window of 1.0 V to -1.0 V vs Ag/AgCl reference electrode. DyBa2Cu3O7-δ was prepared via co-prec...

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Main Authors: Kadri, E. F., Tan, Wee Tee, Zainal, Zulkarnain, Hamadneh, Imad (Moh'd Khair) Rashid
Format: Article
Language:English
Published: Malaysian Solid State Science and Technology Society 2010
Online Access:http://psasir.upm.edu.my/id/eprint/17611/1/Voltammetric%20Studies%20of%20DyBa2Cu3O7.pdf
http://psasir.upm.edu.my/id/eprint/17611/
http://journal.masshp.net/volume-18-no-1-2010/
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spelling my.upm.eprints.176112017-04-18T04:04:11Z http://psasir.upm.edu.my/id/eprint/17611/ Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique Kadri, E. F. Tan, Wee Tee Zainal, Zulkarnain Hamadneh, Imad (Moh'd Khair) Rashid This paper describes a series of electrochemical measurements design to explore the reactivity of the oxide superconductor, DyBa2Cu3O7-δ (DyBCO). The reproducible voltammetry was obtained in the potential window of 1.0 V to -1.0 V vs Ag/AgCl reference electrode. DyBa2Cu3O7-δ was prepared via co-precipitation and conventional solid state technique. Parameters used in this study including the effect of potential cycling, scan rate, temperature and pH as well as chronoamperometry (CA) and chronocoulometry (CC). The electrochemical reduction and oxidation can be recognized easily by the solid-phase voltammetric technique. The cyclic voltammogram for DyBCO prepared in both techniques showed four major peaks attributed to first and second redox couple. The peaks are due to the redox reaction of Cu(NH3)42+ complex.The peak current is highly dependent upon the formation of the Cu(NH3)42+ complexwhich shows that the copper planes in the superconductor played major role inproducing the peaks observed in the voltammograms. A complex surface process was found in the redox reaction through the scan rate study. After thorough investigations, it was found out that DyBCO prepared in both techniques responses strongly under acidic(pH ≈ 2.00), high temperature (80oC) condition with slight differences in voltammetricbehaviors. The cyclic voltammetric behavior exhibited by both samples is found to depend greatly on the parameters used in this study. From CA and CC studies, theamount of charge, Q that was presence on the electrode surface is 17.0 µC/cm2 and 25.0µC/cm2 and diffusion coefficient, D is 4.6 x 10-6 cm2/s and 4.0 x 10-6 cm2/s for co-precipitation and conventional solid state technique, respectively. From the chronocoulometry (CC) measurement, the estimated mass of sample that was attachedon the glassy electrode is 65 ng and 96 ng for sample prepared via conventional solid state and co-precipitation technique, respectively. Malaysian Solid State Science and Technology Society 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/17611/1/Voltammetric%20Studies%20of%20DyBa2Cu3O7.pdf Kadri, E. F. and Tan, Wee Tee and Zainal, Zulkarnain and Hamadneh, Imad (Moh'd Khair) Rashid (2010) Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique. Solid State Science and Technology, 18 (1). pp. 77-90. ISSN 0128-7389 http://journal.masshp.net/volume-18-no-1-2010/
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description This paper describes a series of electrochemical measurements design to explore the reactivity of the oxide superconductor, DyBa2Cu3O7-δ (DyBCO). The reproducible voltammetry was obtained in the potential window of 1.0 V to -1.0 V vs Ag/AgCl reference electrode. DyBa2Cu3O7-δ was prepared via co-precipitation and conventional solid state technique. Parameters used in this study including the effect of potential cycling, scan rate, temperature and pH as well as chronoamperometry (CA) and chronocoulometry (CC). The electrochemical reduction and oxidation can be recognized easily by the solid-phase voltammetric technique. The cyclic voltammogram for DyBCO prepared in both techniques showed four major peaks attributed to first and second redox couple. The peaks are due to the redox reaction of Cu(NH3)42+ complex.The peak current is highly dependent upon the formation of the Cu(NH3)42+ complexwhich shows that the copper planes in the superconductor played major role inproducing the peaks observed in the voltammograms. A complex surface process was found in the redox reaction through the scan rate study. After thorough investigations, it was found out that DyBCO prepared in both techniques responses strongly under acidic(pH ≈ 2.00), high temperature (80oC) condition with slight differences in voltammetricbehaviors. The cyclic voltammetric behavior exhibited by both samples is found to depend greatly on the parameters used in this study. From CA and CC studies, theamount of charge, Q that was presence on the electrode surface is 17.0 µC/cm2 and 25.0µC/cm2 and diffusion coefficient, D is 4.6 x 10-6 cm2/s and 4.0 x 10-6 cm2/s for co-precipitation and conventional solid state technique, respectively. From the chronocoulometry (CC) measurement, the estimated mass of sample that was attachedon the glassy electrode is 65 ng and 96 ng for sample prepared via conventional solid state and co-precipitation technique, respectively.
format Article
author Kadri, E. F.
Tan, Wee Tee
Zainal, Zulkarnain
Hamadneh, Imad (Moh'd Khair) Rashid
spellingShingle Kadri, E. F.
Tan, Wee Tee
Zainal, Zulkarnain
Hamadneh, Imad (Moh'd Khair) Rashid
Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
author_facet Kadri, E. F.
Tan, Wee Tee
Zainal, Zulkarnain
Hamadneh, Imad (Moh'd Khair) Rashid
author_sort Kadri, E. F.
title Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
title_short Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
title_full Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
title_fullStr Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
title_full_unstemmed Voltammetric Studies of DyBa2Cu3O7-δ (DyBCO) prepared via solid-state(SS) and co-precipitation (COP) technique
title_sort voltammetric studies of dyba2cu3o7-δ (dybco) prepared via solid-state(ss) and co-precipitation (cop) technique
publisher Malaysian Solid State Science and Technology Society
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/17611/1/Voltammetric%20Studies%20of%20DyBa2Cu3O7.pdf
http://psasir.upm.edu.my/id/eprint/17611/
http://journal.masshp.net/volume-18-no-1-2010/
_version_ 1643826569935847424
score 13.211869

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