Results 21 to 30 of about 9,951 (268)

HIGH RESOLUTION EXAFS-XANES SPECTROMETER

Le Journal de Physique Colloques, 1986
No abstract ...
BALERNA A, BUSCHERT R, GIARDINA MD, INZAGHI D, MOBILIO, Settimio   +4 more
openaire   +4 more sources

XANES study of structural disorder in amorphous silicon [PDF]

Journal of Non-Crystalline Solids, 1990
An investigation of the structure of several amorphous silicon (a-Si) films is presented. Samples were prepared by using the ion beam sputtering technique at different substrate deposition temperatures. X-ray absorption spectroscopy and multiple scattering formalism have been used to detect structural variations of the a-Si films.
DI CICCO, Andrea, A. BIANCONI, C. COLUZZA, P. RUDOLF, P. LAGARDE, A. M. FLANK, A. MARCELLI   +6 more
openaire   +3 more sources

XANES OF MANGANESE COORDINATION COMPLEXES [PDF]

Le Journal de Physique Colloques, 1986
XANES of Mn compounds of known structure and electronic properties [Mn (II), Mn (III), Mn (IV)] is reported. Preedge, Edge and Post-Edge zone are detailed. Dependence on oxidation state, geometry and nuclearity are discussed. Preedge structure is observed and compared with d-orbital splitting obtained from visible NIR spectroscopy.
Cartier, C., Verdaguer, M., Menage, S., Girerd, J., Tuchagues, J., Mabad, B.   +5 more
openaire   +2 more sources

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Tuning Redox Dynamics in Cu‐Based Electrocatalysts: Effect of Secondary Metals

Advanced Functional Materials, EarlyView.
Advanced analysis of operando X‐ray absorption spectroscopy data reveals that secondary metals affect the redox processes in Cu‐based catalysts for electrocatalytic CO2 reduction. This influences the amount of oxides formed under pulsed reaction conditions and the distribution of reaction products.
Martina Rüscher, Andrea Martini, Eduardo Ortega, Lichen Bai, Eric Liberra, Daniel Escalera‐López, Hyo Sang Jeon, Antonia Herzog, Clara Rettenmaier, Dorottya Hursán, David Koshy, Mariana Cecilio de Oliveira Monteiro, Timon Wagner, Leon Jacobse, Felix Haase, Arno Bergmann, Janis Timoshenko, Beatriz Roldan Cuenya   +17 more
wiley   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

TXM-Pal: a companion software for advanced data processing in spectroscopic X-ray microscopy

Journal of Synchrotron Radiation
Transmission X-ray microscopy (TXM) is a powerful and non-destructive tool for interpreting the chemical states of a wide range of materials. It utilizes X-ray absorption near-edge structure (XANES) for the chemically sensitive mapping of specific ...
Sugeun Jo, Sangwoo Kim, Jun Lim
doaj   +1 more source

Exploring spectroscopic X-ray nano-imaging with Zernike phase contrast enhancement

Scientific Reports, 2022
Spectroscopic full-field transmission X-ray microscopy (TXM-XANES), which offers electrochemical imaging with a spatial resolution of tens of nanometers, is an extensively used unique technique in battery research.
Yeseul Kim, Jun Lim
doaj   +1 more source

Simulating the XANES of metalloenzymes – a case study

Journal of Synchrotron Radiation, 2002
The analysis of XANES patterns is very indicative for screening samples. Powerful X-ray absorption spectroscopy data-analysis programs can simulate these patterns. Here, a case study on two structural motifs is presented: a non-heme Fe site (2-His-1-carboxylate motif) and the metallo β-lactamase dinuclear Zn site.
Mijovilovich, Ana, Meyer-Klaucke, Wolfram   +1 more
openaire   +3 more sources

A Rebirth of Laboratory XANES and XES [PDF]

Acta Crystallographica Section A Foundations and Advances, 2014
We have recently launched a reinvestigation of laboratory-based measurement of x-ray absorption near edge structure (XANES) and high-resolution x-ray emission spectroscopy (XES). Driven by the roughly one-hundred-fold improvement in the efficiency of high resolution x-ray optics compared to the 1970's, we have demonstrated that surprisingly impressive ...
Gerald Seidler, Devon Mortensen, Joseph Pacold, Oliver Hoidn   +3 more
openaire   +1 more source