U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268

B -- TITANIUM DIOXIDE COATING OF REACTORS . SOL 98-R001 DUE 031398 POC Barbara A. Curtiss, 513-487-2036 E-MAIL: U.S.EPA CINCINNATI CONTRACTS MANAGEMENT DIVISION, curtiss.barbara@epamail.epa.gov. The U.S. EPA intends to negotiate on a sole source basis, under the authority of Far Part 6.301, with the University of Cincinnati. Contractor is expected to procure reactor surfaces that they have deposited nanocrystalline titanium dioxide. The deposition of anatase phasetitanium dioxide will be conducted using gas phase routes to produce engineered reactors. These reactors will be used for photocatalytic oxidation process. Titanium dioxide coatings shall be uniform and well characterized. The deposited titanium dioxide shall be anatase phase. The contractor shall obtain properties of the file. Coating surfaces: a flat square cross section 10cm x 10cm quartz cloth will be coated with titanium dioxide film. Inside a lateral surface of a cylindrical reactor. The coating conditions shall be varied to obtain films of different thickness and specific surface areas. Characterization: a detailed characterization of the titania films will be obtained using x-ray diffraction, electron microscopy, and absorption spectroscopy Techniques. Delivery time: the contractor will provide two prototypes samples within six months after the contract is awarded. The prototypes include a coated quartz cloth and the second one 3.5" i.d. x 10" length quartz tube. The coated surface shall be deemed acceptable following initial trials and testing catalytic effectiveness. (0058)

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