Title

Modeling Macroscopic Transport Of Superoxide Radicals Through Nonoheterogeneous Biosensor Film

Keywords

Amperometric; Nanocomposite; Sensor; Superoxide

Abstract

We develop a mathematical model to represent the transport phenomena and electrochemical reaction kinetics during amperometric measurement of superoxide radical concentration using ZnO-polymer nanocomposite sensor. This model assumes a logarithmic normal distribution for the nanoparticles immobilized in the polymer matrix and an empirical relation for the diffusion coefficient of superoxide radicals as a function of pore volume fraction. A kinetic with secondary order rate constant is used to represent the electrochemical reactions of electron transfer from the superoxide radicals to nanoparticles. The predicted results include the effect of diffusion coefficient on concentration and electrical conductivity. © 2004 Elsevier B.V. All rights reserved.

Publication Date

5-13-2005

Publication Title

Sensors and Actuators, B: Chemical

Volume

106

Issue

2

Number of Pages

654-659

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.snb.2004.09.020

Socpus ID

17644386547 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/17644386547

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