title: Multiple-scattering extended X-ray absorption fine structure analysis of nanostructured iron(III) oxide in the pore system of mesoporous carbon CMK-1.
abstract: This work is devoted to the EXAFS analysis of nanostructured iron(III) oxide synthesized inside the pore system of mesoporous carbon CMK-1. A detailed study of the recording, preparation and evaluation of data recorded in fluorescence mode at the iron K-edge with and without multiple scattering is shown. The results obtained show that the local structure of Fe3+ inside nanostructured iron(III) oxide is different to that of the bulk material. Due to the small particle size, data analysis is much more difficult and data preparation more complex. Incorporating multiple scattering paths in the Fourier transforms and back-transforms during data evaluation gives structural insights that cannot be obtained using other spectroscopic methods, and this technique was used to draw conclusions about the first four coordination spheres of the nanostructured iron(III) oxide.
authors.affiliation: Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 58, 35392, Giessen, Germany.
authors.forename: Holger
authors.initials: H
authors.lastname: Huwe
authors.forename: Michael
authors.initials: M
authors.lastname: Fröba
mesh_terms: D002244:Carbon / Q000737:chemistry*; D003461:Crystallography / Q000295:instrumentation / Q000379:methods; D005290:Ferric Compounds / Q000032:analysis*; D005583:Fourier Analysis; D046529:Microscopy, Electron, Transmission / Q000295:instrumentation / Q000379:methods*; D049329:Nanostructures / Q000032:analysis*; D016062:Porosity; D033362:Powder Diffraction; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000295:instrumentation / Q000379:methods; D013057:Spectrum Analysis; D013059:Spectrum Analysis, Raman / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties; D014965:X-Rays
chemical_list: D005290:Ferric Compounds; C000499:ferric oxide; D002244:Carbon