CX-013556: Categorical Exclusion Determination

Titanates for Optimized Performance in Separations Science, Innovative Medical Applications and Photochemistry CX(s) Applied: B3.6Date: 04/20/2015 Location(s): South CarolinaOffices(s): Savannah River Operations Office

Office of NEPA Policy and Compliance

April 20, 2015
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Titanates for Optimized Performance in Separations Science, Innovative Medical Applications and Photochemistry
CX(s) Applied: B3.6
Date: 04/20/2015 
Location(s): South Carolina
Offices(s): Savannah River Operations Office

In this project we will synthesize nanosize titanate-based materials that can be optimized for chemical/radiochemical separations, innovative medical applications and photochemical-based applications. This project will significantly extend recent work by research team members at SRNL as well as those at Sandia National Laboratories (SNL), the University of Washington (UW), and the Oak Ridge National Laboratory (ORNL). Collectively, our previous work has shown that titanate materials are remarkably effective ion exchange materials for (1) the separation of strontium and actinides from strongly alkaline waste solutions, (2) the separation of a wide variety of metal ions from neutral and weakly acidic solutions, and (3) the delivery of biologically relevant metals to living cells under physiological conditions. We predict that the nanosize sodium- and metal-exchanged titanate materials will exhibit improved performance in radiochemical and hazardous metal separations as well as previously unexplored photoelectronic properties that could be exploited for new applications in photocatalysis and photovoltaics.

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