Open AccessTime‐resolved EXAFS investigations of the anodic dissolution of Mo
Author(s) -
LützenkirchenHecht D.,
Frahm R.
Publication year - 1999
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049599001946
Subject(s) - extended x ray absorption fine structure , xanes , molybdenum , dissolution , absorption (acoustics) , absorption spectroscopy , analytical chemistry (journal) , polarization (electrochemistry) , absorption edge , electrolyte , materials science , spectroscopy , surface extended x ray absorption fine structure , chemistry , inorganic chemistry , electrode , optics , physics , optoelectronics , chromatography , quantum mechanics , band gap , composite material
The corrosion products formed during the anodic polarization of molybdenum in 1M KOH were investigated with time resolved X-ray absorption spectroscopy in the vicinity of the Mo K-edge. Near edge spectra as well as EXAFS scans extending over approximately 1000 eV above the Mo absorption edge were measured as a function of the corrosion time. Time dependent values for the concentration of the dissolved Mo species in the electrolyte were calculated from the change of the absorption cofficient at the absorption edge. The detailed analysis of the XANES and EXAFS data suggests the presence of M0042- ions in the solution