Table 1. Fe K-Edge EXAFS Fitting Result of Fe/UiO-66.
| Ab–Sc pairaa | CNbb | Rcc | DWFdd | R-factoree |
|---|---|---|---|---|
| as-synthesized Fe/UiO-66 | ||||
| Fe–O1 | 2.3 ± 0.3 | 1.94 ± 0.02 | 0.0008 ± 0.0028 | 0.01 |
| Fe–O2 | 2.3 ± 0.3 | 2.11 ± 0.03 | 0.0041 ± 0.0053 | |
| Fe···Fe1 | 1.5 ± 0.2 | 2.99 ± 0.03 | 0.0034 ± 0.0041 | |
| Fe···Fe2 | 0.8 ± 0.1 | 3.16 ± 0.06 | 0.0034 ± 0.0064 | |
| pretreated Fe/UiO-66 | ||||
| Fe–O1 | 2.5 ± 1.6 | 1.98 ± 0.08 | 0.0027 ± 0.0071 | 0.02 |
| Fe–O2 | 2.5 ± 1.6 | 2.04 ± 0.17 | 0.0140 ± 0.0418 | |
| Fe···Fe1 | 0.9 ± 0.5 | 2.93 ± 0.17 | 0.0153 ± 0.0248 | |
| Fe···Fe2 | 1.7 ± 1.1 | 3.21 ± 0.25 | 0.0098 ± 0.0443 | |
| spent Fe/UiO-66 | ||||
| Fe–O1 | 2.1 ± 0.1 | 1.93 ± 0.01 | 0.0005 ± 0.0014 | 0.003 |
| Fe–O2 | 2.1 ± 0.1 | 2.08 ± 0.01 | 0.0031 ± 0.0025 | |
| Fe···Fe1 | 1.4 ± 0.1 | 2.97 ± 0.02 | 0.0046 ± 0.0022 | |
| Fe···Fe2 | 2.1 ± 0.1 | 3.13 ± 0.03 | 0.0085 ± 0.0024 | |
a
Ab = absorber; Sc = scatterer.
b
Coordination number.
c
Distance (Å).
d
Debye–Waller factor (Å2).
e
A measure of mean square sum of the misfit at each data point. Fit range: 2.5 < k < 11 Å–1; 1 < R < 3.8 Å. Fit window: Hanning.