Date of Award


Degree Type


University or Center

Clark Atlanta University(CAU)

Degree Name




First Advisor

Dr. Cass D. Parker


Current methods utilized for the cleanup of drinking water primarily involve the use of chemical oxidants (e.g. chlorine, chlorine dioxide, ozone) to remove harmful bacteria and other pathogens. These processes create a number of disinfection by products (DBPs) that are potent toxins including halonitro-methanes and halo-acetic acids. In our research, we sought to examine the ability of supported metal oxides to accomplish disinfection without the production of toxic DBPs. In an effort to examine the interaction of bio-molecules with metal oxides surfaces, our group used Fourier transform infrared attenuated total reflectance (FT-IR/ATR) spectroscopy as well as Raman spectroscopy. We have mainly developed FT-IR/ATR techniques to examine the formation of bio-films on metal oxide surfaces in aqueous solution. Our technique involved the preparation of a thin layer of the oxide powder examined on the surface of the ATR crystal. Subsequent exposure of the film to bio-molecules and adsorption of the bio-molecules onto the surface was monitored through the infrared absorption of the biomolecules.

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