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ساختار ریز جذب اشعه ایکس گسترش یافته
Traditionally, XAS is divided into two main parts: the X-ray absorption near edge structure (XANES) in the near region and the extended X-ray absorption fine structure (EXAFS) spectroscopy away from the adsorption edge [209-211].
When the inorganic cluster of the MOF material does not follow the symmetry of the overall structure or its locality is not known, EXAFS is considered to be a tool that utilizes its atomic selectivity to provide structural information about inorganic clusters and their binding to ligands [212,213].
In addition, except for some special cases, the XANES spectroscopy is more sensitive than the EXAFS one to bond angles and local geometry around the X-ray absorbing atom [209,210].
MOF) in a self-consistent manner using both the XANES and EXAFS methods [215].
Using the extended x-ray absorption fine spectroscopy (EXAFS), Soren et al. obtained the immediate surroundings of the Hf atoms in Hf-UiO-66 structure.
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