Exafs Studies of Transition Metal Exchanged Zeolites
The extended X-ray absorption fine structure (EXAFS) that appears on the high energy side of the absorption edge of an element has been shown to be due to modifications to the final state wave function of the ejected photoelectron from the absorbing atom by its near neighbors.('1,2,3) Consequently, the EXAFS provides a probe of the local environment of the absorbing atom and can be analyzed to yield structural information such as bond distances or coordination numbers.('4) Thus, the EXAFS provides a structural tool potentially applicable to crystalline, polycrystalline, amorphous, liquid, or gas phase materials.
University of Illinois - Urbana-Champaign
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University of Illinois at Urbana-Champaign