21st Annual Student Research Conference
Fabrication and Characterization of Surfaces with Heterogeneous Activity Using Scanning Electrochemical Microscopy
Dmitriy Chernookiy
Dr. Brian D. Lamp, Faculty Mentor
There is currently much interest in the field of analytical chemistry in the miniaturization of measurement systems, with the combination of small size and analyte flexibility a prime objective. To proceed towards this goal, reliable techniques are needed to produce and characterize prototype models. Scanning electrochemical microscopy (SECM) is one such method, providing the opportunity to map chemical activity at a surface over small-scale areas. This project utilized SECM to prepare, modify and characterize active sites on anodized glassy carbon electrode surfaces, including the deposition of gold within the sites and subsequent deactivation with 1-octanethiol. SECM imaging experiments of the resulting interfaces indicate that activity can be controlled on the micrometer scale with conventional microelectrode probes. Preliminary experiments indicate that the active sites can be further modified to control their chemical and electrochemical properties.
Keywords: analytical , electrochemical , SECM, microscopy, sensor , electrode
Topic(s):Chemistry
Presentation Type: Oral Paper
Session: 32-2
Location: VH 1320
Time: 1:30