123rd General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Scholars in Electrochemistry
Room No. Room 407+408
Time THU 09:40-09:50
Code ELEC.O-5
Subject Electrochemical Detection and Electrolysis of Single Nanosized Water Droplet Collisions in Organic Solution
Authors Jungeun Lee, Byung-Kwon Kim*
Department of Chemistry, Sookmyung Women's University, Korea
Abstract Direct electrolysis and detection of single nanosized water emulsion droplets in organic solution using the electrochemical stochastic collision technique on an ultramicroelectrode (UME) was studied. Emulsions, which are a special type of mixture of two or more immiscible liquids, has attracted extensive attention not only in scientific research but also in industries such as cosmetics, food, pharmacy, construction, and petroleum. Despite their outstanding advantages, some water/oil (W/O) emulsions can cause unexpected results, which significantly affect the quality of products, especially in the petroleum industry. Consequently, the detection of the presence and property of W/O emulsion is necessary to evaluate the quality of products. In this experiment, the detection system for water droplets does not require any kind of redox species in an organic solvent, only water molecules in the water droplets were considered. When water droplets collided with the UME surface, anodic current spikes were observed in the chronoamperometry, resulting from the electrolysis of water molecules in the water droplets. From the collision frequency and integrated current spike, concentrations and size distributions of water droplets in an organic solvent can be determined.
E-mail jungeun0405@gmail.com