Synthesis of active, robust and cationic Au25 cluster catalysts on double metal hydroxide by long-term oxidative aging of Au25(SR)18

Nanoscale ◽  
2022 ◽  
Author(s):  
Shinya Masuda ◽  
Shinjiro Takano ◽  
Seiji Yamazoe ◽  
Tatsuya Tsukuda
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Metal Hydroxide ◽  
X Ray ◽  
Oxidative Aging ◽  
Absorption Fine ◽  
Temperature Pretreatment ◽  
X Ray Absorption

Synthesis of an atomically precise Au25 cluster catalyst was attempted by long-term, low-temperature pretreatment of Au25(BaET)18 (BaET-H = 2-(Boc-amino)ethanethiol) on various double metal hydroxide (DMH) supports. X-ray absorption fine 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.

Pump and probe X-ray absorption fine structure using high-brilliance photon sources

1998 ◽  
Vol 5 (3) ◽  
pp. 1001-1003 ◽  
Author(s):  
H. Oyanagi ◽  
A. Kolobov ◽  
K. Tanaka
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Optical Pumping ◽  
Lone Pair ◽  
Amorphous Selenium ◽  
Fluorescence Excitation ◽  
X Ray ◽  
Absorption Fine ◽  
Pump And Probe ◽  
X Ray Absorption

Pump and probe X-ray absorption fine structure (XAFS) is used as a local probe of excited atoms, which can provide direct information on lattice distortion, relaxation and atomic rearrangements associated with electronic excitations. In situ XAFS experiments during optical excitation are reported. Utilizing a grazing-incidence fluorescence excitation, which minimizes the mismatch between the probing depths of X-ray excitation and optical pumping, it is found that the dominant photoinduced defect state in amorphous selenium at low temperature is a pair of threefold neutral C^0_3 states: 2C^*_2 \rightarrow (C^0_3-C^0_3), where C^*_2 denotes the twofold excited lone-pair state. The results indicate that optical pumping of chalcogen atoms at low temperature leads to locally over-coordinated defect pairs similar to those in the liquid state. The origin of reversible photostructural changes, such as photodarkening or photoinduced fluidity, is attributed to the structural disorder caused by the formation and annihilation of dynamical interchain bonds during optical melting.

scholarly journals X-ray Absorption Fine Structure Investigation of the Low Temperature Grown ZnCoO Films

2012 ◽  
Vol 121 (4) ◽  
pp. 883-887 ◽  
Author(s):  
A. Wolska ◽  
M.T. Klepka ◽  
B.S. Witkowski ◽  
M.I. Witkowski ◽  
E. Guziewicz ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Structure Investigation ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

A near-edge X-ray absorption fine structure and photoelectron spectroscopic study of the structure of acetylene on Pd(111) at low temperature

1992 ◽  
Vol 268 (1-3) ◽  
pp. 1-10 ◽  
Author(s):  
H. Hoffmann ◽  
F. Zaera ◽  
R.M. Ormerod ◽  
R.M. Lambert ◽  
J.M. Yao ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Spectroscopic Study ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Low-temperature adsorption ofH2S on Ni(001) studied by near-edge–and surface-extended–x-ray-absorption fine structure

1989 ◽  
Vol 40 (14) ◽  
pp. 9457-9463 ◽  
Author(s):  
R. McGrath ◽  
A. A. MacDowell ◽  
T. Hashizume ◽  
F. Sette ◽  
P. H. Citrin
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption
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