Local Electronic Structure of Functional Groups in Glycine As Anion, Zwitterion, and Cation in Aqueous Solution

2009 ◽  
Vol 113 (49) ◽  
pp. 16002-16006 ◽  
Author(s):  
Johan Gråsjö ◽  
Egil Andersson ◽  
Johan Forsberg ◽  
Laurent Duda ◽  
Ev Henke ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Electronic Structure ◽  
Functional Groups ◽  
Local Electronic Structure

scholarly journals Local electronic structure of histidine in aqueous solution

2021 ◽  
Author(s):  
Oleg Kostko ◽  
Bo Xu ◽  
Musahid Ahmed
Keyword(s):  
Aqueous Solution ◽  
Electronic Structure ◽  
Amino Acid ◽  
Photoemission Spectroscopy ◽  
X Ray ◽  
Local Electronic Structure ◽  
Detailed Picture

The local electronic structure of aqueous histidine, an amino acid important in nature and biology, is revealed by aerosol X-ray photoemission spectroscopy. A detailed picture of the photoionization dynamics emerges...

scholarly journals Molecular species forming at the α-Fe2O3 nanoparticle–aqueous solution interface

2018 ◽  
Vol 9 (19) ◽  
pp. 4511-4523 ◽  
Author(s):  
Hebatallah Ali ◽  
Robert Seidel ◽  
Marvin N. Pohl ◽  
Bernd Winter
Keyword(s):  
Aqueous Solution ◽  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Water Adsorption ◽  
Electron Delocalization ◽  
Liquid Jet ◽  
Structure Interaction ◽  
Solution Interface ◽  
Fe2o3 Nanoparticle ◽  
Local Electronic Structure

Local electronic-structure interaction, dissociative water adsorption, and electron-delocalization time at the α-Fe2O3 nanoparticle–aqueous solution interface are revealed from liquid-jet photoelectron spectroscopy at the oxygen-1s and iron-2p resonances.

EELS Measurement of the Local Electronic Structure of Copper Atoms Segregated to Aluminum Grain Boundaries

1996 ◽  
Vol 54 ◽  
pp. 342-343
Author(s):  
S.J. Splinter ◽  
J. Bruley ◽  
P.E. Batson ◽  
D.A. Smith ◽  
R. Rosenberg
Keyword(s):  
Electronic Structure ◽  
Grain Boundaries ◽  
Boundary Segregation ◽  
Thin Layers ◽  
Nominal Composition ◽  
Spatially Resolved ◽  
Service Lifetime ◽  
Heat Treated ◽  
Probe Size ◽  
Local Electronic Structure

It has long been known that the addition of Cu to Al interconnects improves the resistance to electromigration failure. It is generally accepted that this improvement is the result of Cu segregation to Al grain boundaries. The exact mechanism by which segregated Cu increases service lifetime is not understood, although it has been suggested that the formation of thin layers of θ-CuA12 (or some metastable substoichiometric precursor, θ’ or θ”) at the boundaries may be necessary. This paper reports measurements of the local electronic structure of Cu atoms segregated to Al grain boundaries using spatially resolved EELS in a UHV STEM. It is shown that segregated Cu exists in a chemical environment similar to that of Cu atoms in bulk θ-phase precipitates.Films of 100 nm thickness and nominal composition Al-2.5wt%Cu were deposited by sputtering from alloy targets onto NaCl substrates. The samples were solution heat treated at 748K for 30 min and aged at 523K for 4 h to promote equilibrium grain boundary segregation. EELS measurements were made using a Gatan 666 PEELS spectrometer interfaced to a VG HB501 STEM operating at 100 keV. The probe size was estimated to be 1 nm FWHM. Grain boundaries with the narrowest projected width were chosen for analysis. EDX measurements of Cu segregation were made using a VG HB603 STEM.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

Oxidation of ethylenediphosphinetetraacetate anions

1983 ◽  
Vol 48 (9) ◽  
pp. 2604-2608
Author(s):  
Jana Podlahová ◽  
Jaroslav Podlaha
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Electronic Structure ◽  
Acid Solutions ◽  
Tetraacetic Acid ◽  
Single Product ◽  
Weakly Acid ◽  
Inhibiting Effect ◽  
Oxidation By Molecular Oxygen ◽  
Protonated Forms

The oxidation of the ethylenediphosphinetetraacetate anion and its protonated forms by iodine, periodate, hydrogen peroxide, and oxygen has been studied in aqueous solution. The oxidation by the first three reagents is fast and yields a single product, bis(phosphine oxide), which has been isolated and characterized as ethylenebis(phosphinyl)tetraacetic acid. The oxidation by molecular oxygen proceeds considerably more slowly; in weakly acid solutions its rate is determined by the properties of the oxygen rather than by the electronic structure of the various protonated substrate species. The inhibiting effect of the phosphonium structures takes place only in strongly acid solutions.

Local Electronic Structure of Olivine Phases of LixFePO4

2007 ◽  
Vol 111 (20) ◽  
pp. 4242-4247 ◽  
Author(s):  
Shu Miao ◽  
Michael Kocher ◽  
Peter Rez ◽  
Brent Fultz ◽  
Rachid Yazami ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Local Electronic Structure
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