High energy resolution off-resonant spectroscopy at sub-second time resolution: (Pt(acac)2) decomposition

2012 ◽  
Vol 48 (88) ◽  
pp. 10898 ◽  
Author(s):  
Jakub Szlachetko ◽  
Maarten Nachtegaal ◽  
Jacinto Sá ◽  
Jean-Claude Dousse ◽  
Joanna Hoszowska ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Time Resolution ◽  
High Energy ◽  
High Energy Resolution

In situ time-resolved HEROS study of Pt electronic structure during regenerative H2-O2 cycles

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Jacinto Sá
Keyword(s):  
Electronic Structure ◽  
Energy Resolution ◽  
Time Resolution ◽  
Electronic States ◽  
Reduction Process ◽  
High Energy ◽  
Single Step ◽  
High Energy Resolution ◽  
Time Resolved

AbstractWe report an in situ time-resolved high-energy resolution off-resonant spectroscopy (HEROS) study with unprecedented 100 ms time resolution revealing the unoccupied electronic states of platinum during regenerative oxidation and reduction cycles. The study depicted a slowed oxidation step in comparison with reduction. The oxidation cycle is composed of two characteristic stages, namely adsorption of dissociated oxygen followed by partial oxidation of Pt subsurface. Besides improved temporal resolution of the experiment, the detected reduction process of platinum showed no intermediate features and was completed in a single step within a few seconds.

First results of SRC’s new high‐energy resolution variable line density grating monochromator beamline: HERMON

1995 ◽  
Vol 66 (2) ◽  
pp. 2072-2074 ◽  
Author(s):  
M. Bissen ◽  
M. Fisher ◽  
G. Rogers ◽  
D. Eisert ◽  
K. Kleman ◽  
...  
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
Line Density ◽  
Variable Line ◽  
First Results ◽  
Grating Monochromator

scholarly journals High-Energy-Resolution Fluorescence-Detected X-ray Absorption of the Q Intermediate of Soluble Methane Monooxygenase

2017 ◽  
Vol 139 (49) ◽  
pp. 18024-18033 ◽  
Author(s):  
Rebeca G. Castillo ◽  
Rahul Banerjee ◽  
Caleb J. Allpress ◽  
Gregory T. Rohde ◽  
Eckhard Bill ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Methane Monooxygenase ◽  
High Energy ◽  
High Energy Resolution ◽  
X Ray ◽  
Soluble Methane Monooxygenase ◽  
X Ray Absorption

The (1×1)→hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission

2007 ◽  
Vol 127 (16) ◽  
pp. 164702 ◽  
Author(s):  
Alessandro Baraldi ◽  
Erik Vesselli ◽  
Laura Bianchettin ◽  
Giovanni Comelli ◽  
Silvano Lizzit ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Structural Transition ◽  
High Energy ◽  
Core Level ◽  
High Energy Resolution

scholarly journals High-energy resolution X-ray absorption and emission spectroscopy reveals insight into unique selectivity of La-based nanoparticles for CO2

2015 ◽  
Vol 112 (52) ◽  
pp. 15803-15808 ◽  
Author(s):  
Ofer Hirsch ◽  
Kristina O. Kvashnina ◽  
Li Luo ◽  
Martin J. Süess ◽  
Pieter Glatzel ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Emission Spectroscopy ◽  
High Energy ◽  
Unit Cell ◽  
High Energy Resolution ◽  
Electron Configuration ◽  
Edge Structure ◽  
X Ray ◽  
X Ray Absorption

The lanthanum-based materials, due to their layered structure and f-electron configuration, are relevant for electrochemical application. Particularly, La2O2CO3 shows a prominent chemoresistive response to CO2. However, surprisingly less is known about its atomic and electronic structure and electrochemically significant sites and therefore, its structure–functions relationships have yet to be established. Here we determine the position of the different constituents within the unit cell of monoclinic La2O2CO3 and use this information to interpret in situ high-energy resolution fluorescence-detected (HERFD) X-ray absorption near-edge structure (XANES) and valence-to-core X-ray emission spectroscopy (vtc XES). Compared with La(OH)3 or previously known hexagonal La2O2CO3 structures, La in the monoclinic unit cell has a much lower number of neighboring oxygen atoms, which is manifested in the whiteline broadening in XANES spectra. Such a superior sensitivity to subtle changes is given by HERFD method, which is essential for in situ studying of the interaction with CO2. Here, we study La2O2CO3-based sensors in real operando conditions at 250 °C in the presence of oxygen and water vapors. We identify that the distribution of unoccupied La d-states and occupied O p- and La d-states changes during CO2 chemoresistive sensing of La2O2CO3. The correlation between these spectroscopic findings with electrical resistance measurements leads to a more comprehensive understanding of the selective adsorption at La site and may enable the design of new materials for CO2 electrochemical applications.

scholarly journals A hybrid electrostatic retarding potential analyzer for the measurement of plasmas at extremely high energy resolution

2018 ◽  
Vol 89 (11) ◽  
pp. 113306 ◽  
Author(s):  
Glyn A. Collinson ◽  
Dennis J. Chornay ◽  
Alex Glocer ◽  
Nick Paschalidis ◽  
Eftyhia Zesta
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
Retarding Potential Analyzer
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