Date of Defense
27-4-2026 2:00 PM
Location
F3-110
Document Type
Thesis Defense
Degree Name
Master of Science in Chemistry
College
COS
Department
Chemistry
First Advisor
Prof. Sayed Marzouk
Keywords
Screen-Printed Electrodes, Batch Cell, Hydrodynamic Voltammetry, Multi-Channel Cell, Rotating Disc Electrode.
Abstract
The present thesis describes the development and electroanalytical characterization of two novel cells intended to extend the use of screen-printed electrode chips (SPECs) to applications that are not readily accommodated by currently available cell designs. There are two main objectives for this thesis: first, to redesign the previously described universal batch cell (UBC) into an enhanced format with simpler operation, wider applicability, and quantitative hydrodynamic behavior comparable to that of the rotating disc electrode (RDE); and second, to construct a compact eight-channel batch cell for simultaneous voltammetric applications in unstirred solutions. To achieve these objectives, the Enhanced Universal Batch Cell (EUBC) and the Eight-Channel Batch Cell (8-ChBC) were designed, fabricated, and characterized. The results showed that the EUBC resolved the principal practical and analytical limitations of the UBC by replacing the on-board motor system with an overhead mechanical stirrer and by employing an optimized rotating rod that produced hydrodynamic behavior in qualitative and quantitative agreement with Levich equation. It also enabled the use of both SPECs and conventional solid electrodes under aqueous and organic conditions, including controlled-temperature and controlled-atmosphere operation. The 8-ChBC was successfully developed as a compact complementary cell and proved to be an efficient tool, enabling simultaneous electrode screening and investigation of experimental variables. The present work, therefore, introduces two novel cell designs that provide access to quantitative hydrodynamic measurements and compact multi-channel voltammetry with SPECs. In doing so, it fills a practical gap in SPEC-based electroanalysis by providing convenient cell configurations for measurement modes that were previously difficult to implement.
Included in
ELECTROANALYTICAL CHARACTERIZATION AND APPLICATIONS OF TWO NOVEL CELLS DEVELOPED SPECIFICALLY FOR SCREEN-PRINTED ELECTRODES
F3-110
The present thesis describes the development and electroanalytical characterization of two novel cells intended to extend the use of screen-printed electrode chips (SPECs) to applications that are not readily accommodated by currently available cell designs. There are two main objectives for this thesis: first, to redesign the previously described universal batch cell (UBC) into an enhanced format with simpler operation, wider applicability, and quantitative hydrodynamic behavior comparable to that of the rotating disc electrode (RDE); and second, to construct a compact eight-channel batch cell for simultaneous voltammetric applications in unstirred solutions. To achieve these objectives, the Enhanced Universal Batch Cell (EUBC) and the Eight-Channel Batch Cell (8-ChBC) were designed, fabricated, and characterized. The results showed that the EUBC resolved the principal practical and analytical limitations of the UBC by replacing the on-board motor system with an overhead mechanical stirrer and by employing an optimized rotating rod that produced hydrodynamic behavior in qualitative and quantitative agreement with Levich equation. It also enabled the use of both SPECs and conventional solid electrodes under aqueous and organic conditions, including controlled-temperature and controlled-atmosphere operation. The 8-ChBC was successfully developed as a compact complementary cell and proved to be an efficient tool, enabling simultaneous electrode screening and investigation of experimental variables. The present work, therefore, introduces two novel cell designs that provide access to quantitative hydrodynamic measurements and compact multi-channel voltammetry with SPECs. In doing so, it fills a practical gap in SPEC-based electroanalysis by providing convenient cell configurations for measurement modes that were previously difficult to implement.