Ce(III) and Ce(IV) (re)distribution and fractionation in a laterite profile from Madagascar: Insights from in situ XANES spectroscopy at the Ce LIII-edge

2015 ◽  
Vol 153 ◽  
pp. 134-148 ◽  
Author(s):  
Emilie Janots ◽  
Felix Bernier ◽  
Fabrice Brunet ◽  
Manuel Muñoz ◽  
Nicolas Trcera ◽  
...  
Keyword(s):  
Xanes Spectroscopy ◽  
In Situ Xanes

Speciation of Fe in silicate glasses and melts by in-situ XANES spectroscopy

2007 ◽  
Vol 92 (1) ◽  
pp. 44-56 ◽  
Author(s):  
M. Wilke ◽  
F. Farges ◽  
G. M. Partzsch ◽  
C. Schmidt ◽  
H. Behrens
Keyword(s):  
Silicate Glasses ◽  
Xanes Spectroscopy ◽  
In Situ Xanes

Determination of redox-active centers in praseodymium doped ceria by in situ-XANES spectroscopy

2012 ◽  
Vol 537 ◽  
pp. 80-83 ◽  
Author(s):  
Wolff-Ragnar Kiebach ◽  
Christodoulos Chatzichristodoulou ◽  
Rebecka M. Larsen Werchmeister ◽  
Anke Hagen
Keyword(s):  
Xanes Spectroscopy ◽  
Doped Ceria ◽  
Active Centers ◽  
Redox Active ◽  
In Situ Xanes

Mechanism of Gold Nanoparticle Formation in the Classical Citrate Synthesis Method Derived from Coupled In Situ XANES and SAXS Evaluation

2010 ◽  
Vol 132 (4) ◽  
pp. 1296-1301 ◽  
Author(s):  
Jörg Polte ◽  
T. Torsten Ahner ◽  
Friedmar Delissen ◽  
Sergey Sokolov ◽  
Franziska Emmerling ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Synthesis Method ◽  
Nanoparticle Formation ◽  
In Situ Xanes

In situ XANES Study of Co2+ Ion Adsorption on Fe3O4 Nanoparticles in Supercritical Aqueous Fluids

2012 ◽  
Vol 1383 ◽  
Author(s):  
Hao Yan ◽  
Robert A. Mayanovic ◽  
Joseph Demster ◽  
Alan J. Anderson
Keyword(s):  
Angular Momentum ◽  
Density Of States ◽  
Fe3o4 Nanoparticles ◽  
Ion Adsorption ◽  
Edge Structure ◽  
X Ray ◽  
Peak Fitting ◽  
X Ray Absorption ◽  
In Situ Xanes

ABSTRACTIn situ x-ray absorption spectroscopy (XAS) measurements were made on Fe3O4 nanoparticles in supercritical aqueous fluids to 500 °C in order to study their reactivity with Co2+ aqua ions and to investigate the structural properties of the reacted nanoparticles. The analyses of the x-ray absorption near edge structure (XANES) of XAS indicate that reactivity of Fe3O4 nanoparticles with Co2+ ions is minimal to 200 °C but becomes significant in the 250–500 °C temperature range. XANES and angular momentum projected density of states (l-DOS) calculations were carried out using the FEFF8.2 code and analyses were made using multi-peak fitting to determine the origin of the features exhibited in the spectra.

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