Metal complexation, adsorption onto titanium dioxide and irradiation studies of ethylenediaminetetraacetic acid

CHED 1424

Christina A. Pitters, lanigakc@udmercy.edu, Emily D. Rames, ramesed@students.udmercy.edu, Cleo B. Vidican, vidicacb@students.udmercy.edu, Jonathan M. Shafer, shaferjo@students.udmercy.edu, Hao-Yu Chen, howlick@pchome.com.tw, and Katherine C. Lanigan, lanigakc@udmercy.edu. Department of Chemistry and Biochemistry, University of Detroit Mercy, 4001 W. McNichols Rd., Detroit, MI 48221-3038
The complexation between several metal ions and ethylenediaminetetraacetic acid (EDTA) and (S,S)-ethylenediamine-N,N'-disuccinic acid (EDDS) were carried out using UV/visible absorption and FTIR spectroscopy. In situ IR studies were done using attenuated total reflectance-infrared spectroscopy (ATR-FTIR) to examine the effects of pH, metal ion presence, and the presence of titanium dioxide particles on the complexation. Finally, irradiation of these complexes adsorbed to titanium dioxide particles was performed in order to investigate the photodegradation of metal-EDTA complexes by photocatalytic oxidation over titanium dioxide particles.