. 2024 Feb 17;25(4):2387. doi: 10.3390/ijms25042387

Table 4.

Zn K-edge XANES and EXAFS fit parameters of reference samples.

Samples	Description	E₀ (eV)	Zn K-Edge EXAFS Fit Parameters ^a
Samples	Description	E₀ (eV)	Contribution	CN	R (Å)	S₀²	σ²	R Factor
Zn/HZSM5-IE-0.66%	ZnOH⁺	9664.1	Zn-O	5.74	2.07	0.91	0.010	0.005
Zn/silicalite-1–0.1%	ZnO clusters	9663.7	Zn-O	3.77	2.02	0.91	0.007	0.010
Zn/silicalite-1–5%	ZnO crystallite	9662.1	Zn-O	3.90	1.97	0.91	0.007	0.005
Willemite	Zn-O-Si structure	9662.5	Zn-O	3.52	1.95	0.91	0.004	0.020

^a: CN: coordination number; R: distance between absorber and back scatterer atoms; σ²: Debye–Waller factor; R-factor: $\sum_{i} {({d a t a}_{i} - {f i t}_{i})}^{2} / {({d a t a}_{i})}^{2}$ ; S₀²: the amplitude factor, which was fixed at a value of 0.91, forms the model compound.