Results 21 to 30 of about 1,135,801 (376)

In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy

Chemical Reviews, 2020
During the last decades, X-ray absorption spectroscopy (XAS) has become an indispensable method for probing the structure and composition of heterogeneous catalysts, revealing the nature of the active sites and establishing links between structural ...
J. Timoshenko, B. Roldán Cuenya
semanticscholar   +1 more source

2p x-ray absorption spectroscopy of 3d transition metal systems

Journal of Electron Spectroscopy and Related Phenomena, 2021
This review provides an overview of the different methods and computer codes that are used to interpret 2p x-ray absorption spectra of 3d transition metal ions. We first introduce the basic parameters and give an overview of the methods used.
F. Groot, H. Elnaggar, F. Frati, Ru-Pan Wang, M. Delgado-Jaime, M. Veenendaal, J. Fernández-Rodríguez, M. Haverkort, R. Green, G. Laan, Y. Kvashnin, A. Hariki, H. Ikeno, Harry Ramanantoanina, C. Daul, B. Delley, M. Odelius, M. Lundberg, O. Kühn, S. I. Bokarev, E. L. Shirley, J. Vinson, K. Gilmore, M. Stener, G. Fronzoni, P. Decleva, P. Krüger, M. Retegan, Y. Joly, C. Vorwerk, C. Draxl, J. Rehr, A. Tanaka   +32 more
semanticscholar   +1 more source

Scanning tunnelling miscroscopy/spectroscopy and X-ray absorption spectroscopy studies of Co adatoms and anoislands on highly oriented pyrolytic graphite [PDF]

, 2010
In this paper, the scanning tunneling microscopy, scanning tunneling spectroscopy and X-ray absorption spectroscopy of cobalt adatoms and nanoislands were studied on a highly oriented pyrolytic graphite.
de Jong, M.P., de Jong, Machiel Pieter, Leonardus, L., Siekman, Martin Herman, van der Wiel, Wilfred Gerard, Wong, P.K.J., Zandvliet, Henricus J.W.   +6 more
core   +7 more sources

Laboratory-based X-ray spectrometer for actinide science

Journal of Synchrotron Radiation, 2023
X-ray absorption and emission spectroscopies nowadays are advanced characterization methods for fundamental and applied actinide research. One of the advantages of these methods is to reveal slight changes in the structural and electronic properties of ...
Daniil Novichkov, Alexander Trigub, Evgeny Gerber, Iurii Nevolin, Anna Romanchuk, Petr Matveev, Stepan Kalmykov   +6 more
doaj   +1 more source

Operando time-resolved X-ray absorption spectroscopy reveals the chemical nature enabling highly selective CO2 reduction

Nature Communications, 2020
Copper electrocatalysts have been shown to selectively reduce carbon dioxide to hydrocarbons. Nevertheless, the absence of a systematic study based on time-resolved spectroscopy renders the functional agent—either metallic or oxidative Copper—for the ...
Sheng-Chih Lin, C. Chang, Shih-Yun Chiu, Hsiao-Tien Pai, Tzu-Yu Liao, Chia-Shuo Hsu, Wei‐Hung Chiang, Ming-Kang Tsai, Hao Ming Chen   +8 more
semanticscholar   +1 more source

Gallium Selenide and Rubidium Iodide Filling of Single-Walled Carbon Nanotubes as p, and n-Dopant Chemical Compounds

Engineering Proceedings, 2023
I filled the single-walled carbon nanotubes (SWCNTs) with gallium selenide (GaSe) and rubidium iodide (RbI) as p- and n-dopant chemical compounds. The filling was confirmed by high-resolution transmission electron microscopy.
Marianna V. Kharlamova
doaj   +1 more source

X-Ray Absorption Spectroscopy of Dinuclear Metallohydrolases [PDF]

Biophysical Journal, 2014
In this mini-review, we briefly discuss the physical origin of x-ray absorption spectroscopy (XAS) before illustrating its application using dinuclear metallohydrolases as exemplary systems. The systems we have selected for illustrative purposes present a challenging problem for XAS, one that is ideal to demonstrate the potential of this methodology ...
Tierney, David L., Schenk, Gerhard
openaire   +5 more sources

Oxygen Hole Character and Lateral Homogeneity in PrNiO2+δ Thin Films

Frontiers in Physics, 2022
Using x-ray absorption spectroscopy with lateral resolution from the submillimeter to submicrometer range, we investigate the homogeneity, the chemical composition, and the nickel 3d- oxygen 2p charge transfer in topotactically reduced epitaxial PrNiO2+δ
K. Fürsich, R. Pons, M. Bluschke, R. A. Ortiz, S. Wintz, E. Schierle, M. Weigand, G. Logvenov, G. Schütz, B. Keimer, E. Benckiser   +10 more
doaj   +1 more source

Combined X-ray absorption and SEM–EDX spectroscopic analysis for the speciation of thorium in soil

Scientific Reports, 2023
Mobility and bioavailability of radionuclides in the environment strongly depend on their aqueous speciation, adsorption behavior and the solubility of relevant solid phases. In the present context, we focus on naturally occurring Th-232 at a location in
Sanduni Ratnayake, Johannes Lützenkirchen, Nicolas Finck, Dieter Schild, Frank Heberling, Teba Gil-Díaz, Kathy Dardenne, Jörg Rothe, Horst Geckeis   +8 more
doaj   +1 more source

Interpretation of X-ray Absorption Spectroscopy in the Presence of Surface Hybridization [PDF]

, 2017
X-ray absorption spectroscopy yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces.
Diller, Katharina, Maurer, Reinhard J., Müller, Moritz, Reuter, Karsten   +3 more
core   +2 more sources