MS (Master of Science)
Date of Award
Committee Chair or Co-Chairs
Dr. Gregory W. Bishop
Dr. Marina Roginskaya, Dr. Dane W. Scott
Screen-printed electrodes (SPEs) have found wide use as sensing platforms due to their simple fabrication, customizability in terms of geometry and composition, and relatively low cost of production. Nanoparticles have been incorporated in or interfaced with SPEs in order to improve sensor response or provide electrocatalytic capabilities. Though nanomaterial-modified SPEs are becoming increasingly common sensing platforms, the benefits provided by nanomaterials are often determined through voltammetric studies with common redox probes, such as ferricyanide. However, recent reports have documented the ferri-/ferrocyanide redox couple to be an unreliable system for characterizing some carbon-based electrodes due to the dependence of its electrochemical response on electrode surface effects unrelated to electroactive surface area. In the current studies, we have investigated the voltammetric responses of ferricyanide and other redox probes on bare and gold nanoparticle (AuNP)-modified screen-printed carbon electrodes to determine the potential role of AuNPs in improving sensor response through electrochemical signal enhancement.
Thesis - Open Access
Ahiadu, Ben K., "Role of Nanoparticles in Voltammetric Signal Enhancement Exhibited by Layer-by-Layer (LbL) Gold Nanoparticle-Modified Screen-Printed Carbon Electrodes (SPCEs)" (2017). Electronic Theses and Dissertations. Paper 3232. http://dc.etsu.edu/etd/3232
Copyright by the authors.