Mathematical modeling and experimental data of the oxidation of ascorbic acid on electrodes modified by nanoparticles / Brainina Kh. Z.,Stozhko N. Yu.,Bukharinova M. A.,Galperin L. G.,Vidrevich M. B.,Murzakaev A. M. // JOURNAL OF SOLID STATE ELECTROCHEMISTRY. - 2016. - V. 20, l. 8. - P. 2323-2330.

ISSN/EISSN:

1432-8488 / 1433-0768

Type:

Article

Abstract:

Physical and mathematical models are proposed which describe the electrochemical transformation of compounds diffusing from the solution to an ensemble of nanoparticles (i.e., nanoelectrodes), located on a solid bulk electrode surface. Electrochemical oxidation of ascorbic acid at solid electrodes (glassy carbon, Graphite Ultra Trace and gold) unmodified and modified with gold nanoparticles (Au-nano-ensemble of nanoelectrodes) was experimentally studied. Nanoeffects and diffusion limiting current were observed in the investigation of ascorbic acid oxidation on Au-nano electrodes. Nanoeffects manifested themselves in a shift of the oxidation potential towards negative values with decreasing size of the nanoparticles. Agreement between theoretical and experimental results was demonstrated. The shift of the peak potential or half-peak potential can be used to estimate the size of nanoparticles and Gibbs free surface energy and contribution of nanoeffects to the kinetics of the electrode process.

Author keywords:

Mathematical modeling; Nanoeffects; Electrochemical process; Gold nanoparticles; Ascorbic acid GLASSY-CARBON ELECTRODES; SILVER NANOPARTICLES; ELECTROCATALYTIC OXIDATION; ELECTROOXIDATION THEORY; STRIPPING VOLTAMMETRY; GOLD; BISMUTH; SIZE

DOI:

10.1007/s10008-016-3249-9

Web of Science ID:

ISI:000380120600025

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
EISSN	1433-0768
Keywords-Plus	GLASSY-CARBON ELECTRODES; SILVER NANOPARTICLES; ELECTROCATALYTIC OXIDATION; ELECTROOXIDATION THEORY; STRIPPING VOLTAMMETRY; GOLD; BISMUTH; SIZE
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	baz@usue.ru
ORCID-Numbers	, Natalia/0000-0002-0018-8803
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}1458, 4.1458.2014/k]; Russian Foundation for Basic Research {[}13-03-00285\_a, 16-33-00587\_mol\_a]
Funding-Text	The authors are grateful for the financial support of the Ministry of Education and Science of the Russian Federation (Project no. 1458, Assignment no. 4.1458.2014/k) and the Russian Foundation for Basic Research (Projects no. 13-03-00285\_a and no. 16-33-00587\_mol\_a).
Number-of-Cited-References	23
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	17
Journal-ISO	J. Solid State Electrochem.
Doc-Delivery-Number	DR8AK