DOI
https://doi.org/10.25772/BG38-TK69
Defense Date
2020
Document Type
Thesis
Degree Name
Master of Science
Department
Chemistry
First Advisor
Maryanne M. Collinson, Ph.D.
Abstract
In sensing application nanoporous gold (NPG) has attracted much attention. NPG is prepared by dealloying Au:Ag alloys. Characterization was done using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). In this work, the open circuit potential (OCP) of ferricyanide, cysteine, uric acid, and ascorbic acid was measured in phosphate buffer solution (PBS) and biofouling solution containing bovine serum albumin (BSA) at pH 7.4. OCP measurement has been hindered due to biofouling and surface passivation on the metal electrodes. By the use of the NPG electrodes, electrochemical activity can be maintained. From the OCP measurement of cysteine, ascorbic acid, and uric acid, it was seen that mixed potential was dominated by ascorbic acid when multiple components are present in the solution.
Rights
© The Author
Is Part Of
VCU University Archives
Is Part Of
VCU Theses and Dissertations
Date of Submission
5-19-2020