Surface structure of √3 × √3R30° Cl/Ni(111) determined using low-temperature angle-resolved photoemission extended fine structure

1991 ◽  
Vol 44 (24) ◽  
pp. 13711-13719 ◽  
Author(s):  
Li-Qiong Wang ◽  
Z. Hussain ◽  
Z. Q. Huang ◽  
A. E. Schach von Wittenau ◽  
D. W. Lindle ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Surface Structure

Low-temperature NO oxidation using lattice oxygen in Fe-site substituted SrFeO3−δ

2020 ◽  
Vol 22 (42) ◽  
pp. 24181-24190
Author(s):  
Kazuki Tamai ◽  
Saburo Hosokawa ◽  
Kazuo Kato ◽  
Hiroyuki Asakura ◽  
Kentaro Teramura ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Lattice Oxygen ◽  
No Oxidation ◽  
Oxygen Release ◽  
X Ray ◽  
Absorption Fine ◽  
Perovskite Catalysts ◽  
X Ray Absorption

The dynamics of lattice oxygen release from perovskite catalysts during NO oxidation was investigated by dispersive X-ray absorption fine structure.

Fine structure of the bands in the low-temperature spectra of sodium uranyl acetate

1982 ◽  
Vol 37 (5) ◽  
pp. 1277-1281 ◽  
Author(s):  
V. N. Boikov ◽  
A. N. Krasovskii ◽  
D. S. Umreiko
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Uranyl Acetate ◽  
Temperature Spectra

scholarly journals The nature of species prepared by photolysis of half-reduced, fully reduced and fully reduced carbonmonoxy-cytochrome c-551 peroxidase from Pseudomonas aeruginosa

1984 ◽  
Vol 223 (2) ◽  
pp. 379-391 ◽  
Author(s):  
C Greenwood ◽  
N Foote ◽  
J Peterson ◽  
A J Thomson
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Fine Structure ◽  
Low Temperature ◽  
Cytochrome C ◽  
Activation Barrier ◽  
Magnetic Circular Dichroism ◽  
High Potential ◽  
Quantum Mechanical ◽  
Methionine Residue ◽  
Magnetic Circular Dichroism Spectroscopy

The half-reduced, fully reduced and fully reduced CO-bound forms of the enzyme cytochrome c-551 peroxidase isolated from Pseudomonas aeruginosa were examined by a combination of low-temperature absorption and magnetic-circular-dichroism spectroscopy. Deliberate low-temperature (4.2K) photolysis of these forms of the enzyme, in all of which the high-potential haem is in the ferrous state, revealed that this haem group, assigned to have a histidine-methionine ligand set, is photosensitive. The photolabile ligand is most likely to be the methionine residue, and the product of photolysis, namely the high-spin (S = 2) ferrous form, is stable at low temperature (4.2K). Warming to approx. 20K allows thermal recombination to occur, restoring the low-spin (S = 0) state. The low-potential haem (bis-histidine ligation) is photoinert in both ferric and ferrous states; however, the photosensitive CO adduct of this centre cannot be maintained as the photolysed (S = 2) product at 4.2K. This surprising observation may be due to quantum-mechanical tunnelling of the CO through the activation barrier even at 4.2K, implying that the activation barrier to thermal recombination is both narrow and low. Low-temperature absorption spectroscopy reveals that the high-potential haem has a very characteristic low-spin ferrous spectrum with intense highly structured beta- and split alpha-bands, whereas the spectrum of the low-potential ferrous haem contains alpha- and beta-bands devoid of fine structure.

Surface Structure of MgO Thin Films Revealed from X-ray Reflectivity and Near-Edge X-ray Absorption Fine Structure Measurements

2018 ◽  
Vol 10 (9) ◽  
pp. 1372-1376 ◽  
Author(s):  
Jitendra Pal Singh ◽  
Weon Cheol Lim ◽  
Ik-Jae Lee ◽  
Sung OK Won ◽  
Keun Hwa Chae
Keyword(s):  
Thin Films ◽  
Fine Structure ◽  
Surface Structure ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Catalytic Properties of Ni3Fe Foil for Hydrogen Production from Methanol

2012 ◽  
Vol 706-709 ◽  
pp. 1052-1057 ◽  
Author(s):  
Ya Xu ◽  
Masahiko Demura ◽  
Toshiyuki Hirano ◽  
Yasuyuki Kaneno ◽  
Takayuki Takasugi
Keyword(s):  
Catalytic Activity ◽  
Fine Structure ◽  
Hydrogen Production ◽  
Surface Structure ◽  
Carbon Nanofibers ◽  
Surface Analysis ◽  
Catalytic Properties ◽  
Methanol Decomposition ◽  
Metallurgical Process ◽  
Temperature Surface

The objective of this study is to investigate the catalytic properties of intermetallic Ni3Fe foil. We fabricated Ni3Fe foil of 30 µm in thickness by a metallurgical process, and examined the catalytic activity of the Ni3Fe foil for methanol decomposition from 513 to 973 K. The Ni3Fe foil showed activity for methanol decomposition above 623 K. The activity increased with the increase of reaction temperature. Surface analysis revealed that a surface structure of fine Ni-Fe particles dispersed on carbon nanofibers was formed on the foil during the reaction. The activity is attributed to the formation of this fine structure.

Fine structure of oxygen absorption bands in Si at low temperature

1992 ◽  
Vol 72 (11) ◽  
pp. 5393-5396 ◽  
Author(s):  
K. Ryoo ◽  
H. R. Kim ◽  
J. S. Koh ◽  
G. Seo ◽  
J. H. Lee
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Oxygen Absorption ◽  
Absorption Bands
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