Electrochemical flow cells typically consist of electrodes (rods, planar structures, etc.) placed inside a flow cell and samples are flowing in parallel to the electrodes surface (flow-by orientation) or towards electrodes surface (perpendicular or wall-jet orientation). Flow-through electrochemical cells are a new generation of electrochemical cells that consist of three-dimensional fluid permeable electrodes that allow the samples to pass though the electrodes and, therefore, the analytes/reactants to be in close proximity to the electrodes to allow high reaction rates and increased sensitivity. In this presentation we will discuss the performance of flow-through electrochemical cells for a) the electrochemical detection of trace levels of lead ions in aqueous samples and b) the electrochemical decontamination of samples that contain bacteria. Experimental results highlighted that flow-through electrochemical cells exhibit superior performance compared to electrochemical flow cells that use non-permeable electrodes. Finite elements simulations of flow velocity profiles and the concentration profiles of redox species inside flow-through electrochemical cells provided a plausible explanation for the superior performance of flow-through electrochemical cells.

Flow-through electrochemical cells for ultrasensitive chemical analysis and rapid decontamination of wastes.

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.