Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10377677 | Journal of Colloid and Interface Science | 2005 | 8 Pages |
Abstract
The sorption species and coordination environment of zinc sorbed on to hydrous ferric oxide (HFO) did not change for aging times up to six months. At an initial concentration of 104â M, Zn formed innersphere surface complexes on the surface of HFO. Zn was tetrahedrally coordinated with oxygen atoms at ZnO bond distance of â¼1.94-1.97 Ã
with coordination number of â¼3.8-4.7. In the second shell Zn appeared to be coordinated with Fe with a bond distance of â¼3.42-3.49 Ã
. At an initial concentration of 103âM, both innersphere and polynuclear complexes were feasible sorption products. The first shell was tetrahedrally coordinated with about four oxygen atoms at a bond distance of 1.96 Ã
. The second shell could be attributed to either ZnFe or ZnZn correlations with almost the same bond distance of 3.42-3.44 Ã
.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Shinwoo Lee, Paul R. Anderson,