The effects of nanosize on the kinetics of contaminant reduction by iron and iron oxides were studied. A graphical tool for assessing relative rates of reactions occurring on particle surfaces was used. A log-log plot of surface area normalized rate constants (kSA) vs. mass normalized rate constants (kM) was presented. Nanoparticles with an Fe0 core and Fe3O4 shell was more reactive with CCl4 than Fe3O4 or Fe2O3/FeII under all circumstances, suggesting that Fe0 increased the reactivity of the particle even though it might not be in contact with the solution. Comparisons such as the latter, however, effectively assumed that the specific surface area of the particles was an adequate (ideally accurate, but minimally unbiased) measure of reactive surface area. This was not the case for Fe0 that contained large amounts of oxide or FeII oxides. This is an abstract of a paper presented in the 230th ACS National Meeting (Washington, DC 8/28/2005-9/1/2005).
|Original language||English (US)|
|Number of pages||5|
|Journal||ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts|
|State||Published - Dec 1 2005|
|Event||ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts - Washingtond, DC, United States|
Duration: Aug 28 2005 → Sep 1 2005
ASJC Scopus subject areas