Results 31 to 40 of about 11,563 (263)

The Kinetics of Nickel Sorption on Pyrophyllite as Monitored by X-Ray Absorption Fine Structure (XAFS) Spectroscopy [PDF]

Le Journal de Physique IV, 1997
This study investigated the effect of reaction time (minutes to months) on the surface coordination environment of Ni sorbed onto pyrophyllite using XAFS. The data suggest the appearance of multinuclear Ni complexes after a reaction time of minutes. As reaction time progresses, these multinuclear Ni complexes increased in size ((NNi-Ni = 1.4-4.5).
Scheidegger, A., Lamble, G., Sparks, D.
openaire   +1 more source

Soft X-ray beamline BL1N2 at Aichi Synchrotron Radiation Center and its industrial use

Journal of Synchrotron Radiation, 2023
BL1N2 is a soft X-ray XAFS (X-ray absorption fine structure) beamline that is well suited for industrial use. User service started in 2015. The beamline is a grazing optical system with a pre-mirror, an inlet slit, two mirrors for three gratings, an ...
Harue Sugiyama, Haruki Murase, Toyokazu Nomoto, Yoshikazu Takeda   +3 more
doaj   +1 more source

Thorium nanochemistry: The solution structure of the Th(iv)-hydroxo pentamer [PDF]

, 2012
Tetravalent thorium exhibits a strong tendency towards hydrolysis and subsequent polymerization. Polymeric species play a crucial role in understanding thorium solution chemistry, since their presence causes apparent solubility several orders of ...
Fuss, M., Rothe, J., Schimmelpfennig, B., Walther, C.   +3 more
core   +2 more sources

Regulation of oxygen reduction reaction performance cobalt-based nitrogen-doped carbon catalysts by vanadium

He jishu, 2021
BackgroundTransition metal nitrogen doped carbon materials are promising to replace precious metal platinum-based materials as an important electrocatalyst for oxygen reduction, and have attracted extensive attention in the research fields of energy ...
YANG Yuqi, ZHANG Guangying, SUN Fanfei, MEI Bingbao, YANG Shuai, JIANG Zheng, ZHU Zhiyuan   +6 more
doaj   +1 more source

Solid state phase transitions characterized by esr and xas [PDF]

, 2000
Measurements of the relaxation time, of electron systems to a disturbance, by two different spectroscopic methods are examined in detail, with the purpose to establish how the presence of fluctuations near a solid state phase transition are made evident
Acrivos, Juana Vivó
core   +3 more sources

X-ray Absorption Fine Structure in Embedded Atoms

, 1994
Oscillatory structure is found in the atomic background absorption in x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from scattering within an embedded atom, and is analogous to the Ramsauer-Townsend effect.
A. I. Frenkel, B. W. Holland, C. H. Booth, C. H. Booth, F. Bridges, G. G. Li, J. J. Rehr, J. J. Rehr, J. J. Rehr, J. J. Rehr, J. J. Rehr, M. Newville, P. A. Lee, R. G. Newton, S. I. Zabinsky   +14 more
core   +1 more source

Characterization of Elemental Composition and Valence State of Cyclone-collected Aerosol Particles Using EDXRF and XAFS at Three Sites in Japan

Asian Journal of Atmospheric Environment, 2023
The valence state and concentration of metallic pollutants are important factors contributing to the health effects of respirable particulate matter (PM); however, they have not been well studied.
Weidong Jing, Katsutomo Saito, Takuma Okamoto, Hibiki Saito, Kazuki Sugimoto, Chiharu Nishita-Hara, Keiichiro Hara, Masahiko Hayashi, Shuichi Hasegawa, Tomoaki Okuda   +9 more
doaj   +1 more source

Electronic structure studies of Fe- ZnO nanorods by x-ray absorption fine structure

, 2009
We report the electronic structure studies of well characterized polycrystalline Zn_{1-x}Fe_xO (x = 0.0, 0.01, 0.03, and 0.05) nanorods synthesized by a co-precipitation method through x-ray absorption fine structure (XAFS).
B H Koo, C G Lee, Janisch R, K H Chae, Koningsberger D C, Kumar R, Ohno H, P Thakur, Ravi Kumar, , Sanjeev Gautam, Sarma S D, Shalendra Kumar, Stern E A, Teo B K, Wolf S A, Zhang J   +15 more
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Development and tests of a new prototype detector for the XAFS beamline at Elettra Synchrotron in Trieste [PDF]

, 2016
The XAFS beamline at Elettra Synchrotron in Trieste combines X-ray absorption spectroscopy and X-ray diffraction to provide chemically specific structural information of materials.
Ahangarianabhari, M, Baldazzi, G, Bellutti, P, Bertuccio, G, Bruschi, M, Bufon, J, Carrato, S, Castoldi, A, Cautero, G, Ciano, S, Cicuttin, A, Crespo, M L, Fabiani, S, Gandola, M, Garcia, V Villaverde, Giacomini, G, Giuressi, D, Guazzoni, C, Menk, R H, Niemela, J, Olivi, L, Picciotto, A, Piemonte, C, Rachevski, A, Rashevskaya, I, Rignanese, L P, Santos, M Dos, Sbrizzi, A, Schillani, S, Vacchi, A, Zampa, G, Zampa, N, Zorzi, N   +32 more
core   +2 more sources

X-Ray Absorption Fine Structure (Xafs) Spectroscopy – A Review

, 2013
X-ray absorption spectroscopy (XAS) refers to the details of how X-rays are absorbed by an atom at energies near and above the core-level binding energies of that particular atom. The absorption of X-rays on the high energy side of absorption edges does not vary monotonically in condensed matter but has a complicated behavior which extends past the ...
Abhijeet Gaur, B D Shrivastava, H L Nigam   +2 more
openaire   +2 more sources