Applications
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• Sensors
Our microporous thin-films can be cast on supports for a variety of gas and liquid sensor applications. We worked with Prof. Craig Grimes on magnetoelastic sensors for the detection of gaseous ethylene, a plant ripening hormone. Currently we are working with sensors to detect and quantify specific molecules and ions in aquatic environments. Our nanoporous thin-film metal oxide coatings can have very high specific surface areas on which potential-determining ions can adsorb to alter the surface potential at the solid solution interface. Sub-micromolar (< 10-6 M) analyte concentrations can be detected. As part of our research, we are developing a sensor for orthophosphates using sol-gel materials, with experimental methods based in the electrochemistry of the interaction between phosphate and metal oxides. Using electrochemical impedance spectroscopy, we have used nanoporous iron oxide thin-film electrodes to tie orthophosphate levels to experimental results, with sensitivity to nanomolar (10-9 M) phosphate in electrolyte solutions simulating lake water.
Department of Environmental Chemistry and Technology, University of Wisconsin-Madison
660 North Park Street, Madison, WI 53706
contact us I +1-608-262-2674 I +1-608-446-8160 (cellular)
Professor Marc A. Anderson Lab of Sol-Gel Chemistry
welcome to our world of environmental technologies
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