New Synthetic Pathways to Mesostructured Thiogermanates

1998 ◽  
Vol 547 ◽  
Author(s):  
N. Oberender ◽  
M. Fröba
Keyword(s):  
Electron Microscopy ◽  
Thermal Analysis ◽  
Transmission Electron Microscopy ◽  
Absorption Spectroscopy ◽  
Powder Diffraction ◽  
Metal Chalcogenides ◽  
Templated Synthesis ◽  
X Ray ◽  
Transmission Electron ◽  
X Ray Absorption

AbstractThe synthesis and characterisation of several mesostructured thiogermanates are shown. In particular the first supramolecular templated synthesis of mesostructured binary metal chalcogenides in a microwave is presented. The obtained products are characterised by x-ray powder diffraction, transmission electron microscopy, thermal analysis and x-ray absorption spectroscopy.

scholarly journals Sr2Fe1+xRe1−xO6 double perovskites: magnetoresistance and (magneto)thermopower

2019 ◽  
Vol 55 (42) ◽  
pp. 5878-5881 ◽  
Author(s):  
Antoine Maignan ◽  
Christine Martin ◽  
Oleg Lebedev ◽  
Jonas Sottmann ◽  
Lucie Nataf ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Absorption Spectroscopy ◽  
Powder Diffraction ◽  
Double Perovskites ◽  
X Ray ◽  
Transmission Electron ◽  
X Ray Absorption

Polycrystalline Sr2Fe1+xRe1−xO6 samples have been synthesized, structurally characterized by X-ray powder diffraction, transmission electron microscopy, X-ray absorption spectroscopy, and measurements of their magnetotransport properties were performed.

scholarly journals The crystallization of MgO–Al2O3–SiO2–ZrO2glass-ceramics with and without the addition of Y2O3– a combined STEM/XANES study

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62934-62943 ◽  
Author(s):  
Sabrina Seidel ◽  
Christian Patzig ◽  
Thomas Höche ◽  
Michael Krause ◽  
Martin Ebert ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Absorption Spectroscopy ◽  
Analytical Transmission Electron Microscopy ◽  
X Ray ◽  
Aluminosilicate Glasses ◽  
Transmission Electron ◽  
X Ray Absorption

The crystallization of magnesium–aluminosilicate glasses is monitored, described and discussedviaX-ray absorption spectroscopy and analytical transmission electron microscopy.

scholarly journals Investigation of nanoparticulate silicon as printed layers using scanning electron microscopy, transmission electron microscopy, X-ray absorption spectroscopy and X-ray photoelectron spectroscopy

2017 ◽  
Vol 24 (5) ◽  
pp. 1017-1023
Author(s):  
David M. Unuigbe ◽  
Margit Harting ◽  
Emmanuel O. Jonah ◽  
David T. Britton ◽  
Dennis Nordlund
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Absorption Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Silicon Nanoparticles ◽  
X Ray ◽  
Transmission Electron ◽  
X Ray Absorption ◽  
Scanning Electron

The presence of native oxide on the surface of silicon nanoparticles is known to inhibit charge transport on the surfaces. Scanning electron microscopy (SEM) studies reveal that the particles in the printed silicon network have a wide range of sizes and shapes. High-resolution transmission electron microscopy reveals that the particle surfaces have mainly the (111)- and (100)-oriented planes which stabilizes against further oxidation of the particles. X-ray absorption spectroscopy (XANES) and X-ray photoelectron spectroscopy (XPS) measurements at the O 1s-edge have been utilized to study the oxidation and local atomic structure of printed layers of silicon nanoparticles which were milled for different times. XANES results reveal the presence of the +4 (SiO2) oxidation state which tends towards the +2 (SiO) state for higher milling times. Si 2pXPS results indicate that the surfaces of the silicon nanoparticles in the printed layers are only partially oxidized and that all three sub-oxide, +1 (Si2O), +2 (SiO) and +3 (Si2O3), states are present. The analysis of the change in the sub-oxide peaks of the silicon nanoparticles shows the dominance of the +4 state only for lower milling times.

Sorption interactions of plutonium and europium with ordered mesoporous carbon

2014 ◽  
Vol 2 (29) ◽  
pp. 11209-11221 ◽  
Author(s):  
Tashi Parsons-Moss ◽  
Jinxiu Wang ◽  
Stephen Jones ◽  
Erin May ◽  
Daniel Olive ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Absorption Spectroscopy ◽  
Mesoporous Carbon ◽  
High Capacity ◽  
X Ray ◽  
Transmission Electron ◽  
Ordered Mesoporous ◽  
Microscopy Techniques ◽  
X Ray Absorption

Batch, X-ray absorption spectroscopy, and transmission electron microscopy techniques revealed oxidized and pristine OMCs as high-capacity plutonium adsorbents, employing different mechanisms.

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