Sols are colloidal suspensions which are normally charge or sterically stabilized. Our sol particles are typically hydrous oxides suspended in aqueous media. However, polymeric organic sols as well as organic-inorganic sols are also possible. We have been developing a variety of “in-situ” techniques for characterizing these systems.
Sols are normally cast onto a variety of porous or non porous substrates to produce supported “Thin-Films.” Often it is difficult to characterize some parameters such as pore size and pore size distribution in these films and for that reason we utilize Xerogels produced from our suspensions to accomplish this task.
Xerogels are colloidal sols in which water is removed by evaporation forming porous coupons which can be characterized in either their fired or non-fired state. These gels allow us to use such techniques as BET (gas phase adsorption) to characterize the nature of the pores in our materials.
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
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