Abstract
Cathodically deposited Ag2Se, to form a 1-μm-thick film, characterized by energy dispersive X-ray analysis and scanning electron microscopy, showed high electro-catalytic activity for l-ascorbic acid oxidation in alkaline solution. The onset of the process was about 80 mV cathodic of that previously observed on Ag under the same conditions and far superior over glassy carbon and Pt. The values of the exchange current density, standard heterogeneous rate constant, and transfer coefficient of the reaction were 1.65 × 10−4 A cm−2, 4.35 × 10−7 cm s−1, and 0.60, respectively. Diffusion coefficient of l-ascorbate di-anion was also measured and was around 7.00 × 10−6 cm2 s−1.
Similar content being viewed by others
References
D. Sun, Y. Zhang, F. Wang, K. Wu, J. Chen, Y. Zhou, Sens. Actuators B: Chem 141, 641 (2009)
N. Fujiwara, K. Yasuda, T. Ioroi, Z. Siroma, Y. Miyazaki, T. Kobayashi, Electrochem. Solid-State Lett. 6(12), A257 (2003)
N. Fujiwara, Z. Siroma, T. Ioroi, K. Yasuda, J. Power Sources 164(2), 457 (2007)
S. Uhm, J. Choi, S.T. Chung, J. Lee, Electrochim. Acta 53(4), 1731 (2007)
N. Fujiwara, S. Yamazaki, Z. Siroma, T. Ioroi, K. Yasuda, Electrochem. Commun. 8(5), 720 (2006)
L.M. Kasmaee, F. Gobal, J. Power Sources 195, 165 (2010)
M.T. Neshkova, V.D. Nikolova, V. Petrov, J. Electroanal. Chem. 487, 100 (2000)
M.T. Neshkova, V.D. Nikolova, A.M. Bond, V. Petrov, Electrochim. Acta 50, 5606 (2005)
T. Ishiyama, T. Tanaka, Anal. Chem. 68, 3789 (1996)
Southampton Electrochemistry Group, Instrumental Methods in Electrochemistry, (Ellis Horwood, Chichester, 1990), p. 186
A.J. Bard, L.R. Faulkner, Electrochemical Methods: Fundamentals and Applications, 2nd edn. (Wiley, New York, 2001), p. 196
C.G. Zoski (ed.), Handbook of Electrochemistry, (Elsevier, New York, 2007), p. 645
X.L. Wen, J. Zhang, Z.L. Liu, Z.X. Han and A. Rieker, J. Chem. Soc., Perkin Trans. 2, 905 (1998)
Acknowledgments
The authors wish to express thanks to the office of the vice chancellor of research of the Sharif University of Technology for the financial support.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gobal, F., Majari Kasmaee, L. Silver Selenide as a Potential Electro-catalyst for l-Ascorbic Acid Electro-oxidation in Alkaline Solution. Electrocatal 2, 331–336 (2011). https://doi.org/10.1007/s12678-011-0069-7
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12678-011-0069-7