کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10377677 | 880741 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
EXAFS study of Zn sorption mechanisms on hydrous ferric oxide over extended reaction time
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
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
.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 286, Issue 1, 1 June 2005, Pages 82-89
Journal: Journal of Colloid and Interface Science - Volume 286, Issue 1, 1 June 2005, Pages 82-89
نویسندگان
Shinwoo Lee, Paul R. Anderson,