In situ time-resolved DXAFS study of Rh nanoparticle formation mechanism in ethylene glycol at elevated temperature

2012 ◽  
Vol 14 (9) ◽  
pp. 2983 ◽  
Author(s):  
Hiroyuki Asakura ◽  
Kentaro Teramura ◽  
Tetsuya Shishido ◽  
Tsunehiro Tanaka ◽  
Ning Yan ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Ethylene Glycol ◽  
Formation Mechanism ◽  
Time Resolved ◽  
Nanoparticle Formation

In situ time-resolved FTIRS study of adsorption and oxidation of ethylene glycol on Pt(100) electrode

2005 ◽  
Vol 50 (18) ◽  
pp. 1995-1998
Author(s):  
Youjun Fan ◽  
Zhiyou Zhou ◽  
Chunjie Fan ◽  
Chunhua Zhen ◽  
Shengpei Chen ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Time Resolved

In situ microcalorimetry study of ZnFe2O4 nanoparticle formation under solvothermal conditions

2015 ◽  
Vol 44 (39) ◽  
pp. 17293-17301 ◽  
Author(s):  
Jun Liu ◽  
Zhaodong Nan ◽  
Shengli Gao
Keyword(s):  
Formation Mechanism ◽  
Solvothermal Method ◽  
Nanoparticle Formation ◽  
Model Sample ◽  
One Step ◽  
Solvothermal Conditions ◽  
In Situ Microcalorimetry

In situ microcalorimetry is used to investigate the formation mechanism for the solvothermal method, where ZnFe2O4 nanoparticles synthesized via a one-step solvothermal method are selected as the model sample.

scholarly journals Time-resolved in situ studies on the formation mechanism of iron oxide nanoparticles using combined fast-XANES and SAXS

CrystEngComm ◽  
2015 ◽  
Vol 17 (44) ◽  
pp. 8463-8470 ◽  
Author(s):  
Anke Kabelitz ◽  
Ana Guilherme ◽  
Maike Joester ◽  
Uwe Reinholz ◽  
Martin Radtke ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Formation Mechanism ◽  
Oxide Nanoparticles ◽  
Time Resolved ◽  
In Situ Studies

The reaction of iron chlorides with an alkaline reagent is one of the most prominent methods for the synthesis of iron oxide nanoparticles.

In Situ and Time-Resolved SAXS Studies of Pd Nanoparticle Formation in a Template of Block Copolymer Microdomain Structures

2006 ◽  
Vol 39 (3) ◽  
pp. 1116-1124 ◽  
Author(s):  
Naoki Sakamoto ◽  
Masafumi Harada ◽  
Takeji Hashimoto
Keyword(s):  
Block Copolymer ◽  
Time Resolved ◽  
Nanoparticle Formation ◽  
Pd Nanoparticle

Exciton dynamics in thick GaN MOVPE epilayers deposited on sapphire.

1997 ◽  
Vol 2 ◽  
Author(s):  
J. Allègre ◽  
P. Lefebvre ◽  
J. Camassel ◽  
B. Beaumont ◽  
Pierre Gibart
Keyword(s):  
Layer Thickness ◽  
Buffer Layers ◽  
Rate Equations ◽  
Time Resolved ◽  
Versus Layer ◽  
Level Model ◽  
Shallow Impurities ◽  
Aln Buffer ◽  
Time Resolved Photoluminescence

Time-resolved photoluminescence spectra have been recorded on three GaN epitaxial layers of thickness 2.5 μm, 7 μm and 16 μm, at various temperatures ranging from 8K to 300K. The layers were deposited by MOVPE on (0001) sapphire substrates with standard AlN buffer layers. To achieve good homogeneities, the growth was in-situ monitored by laser reflectometry. All GaN layers showed sharp excitonic peaks in cw PL and three excitonic contributions were seen by reflectivity. The recombination dynamics of excitons depends strongly upon the layer thickness. For the thinnest layer, exponential decays with τ ~ 35 ps have been measured for both XA and XB free excitons. For the thickest layer, the decay becomes biexponential with τ1 ~ 80 ps and τ2 ~ 250 ps. These values are preserved up to room temperature. By solving coupled rate equations in a four-level model, this evolution is interpreted in terms of the reduction of density of both shallow impurities and deep traps, versus layer thickness, roughly following a L−1 law.

Laser-synthesis of single-wall carbon nanotubes with time-resolved in situ diagnostics

2001 ◽  
Author(s):  
David B. Geohegan ◽  
Alex A. Puretzky ◽  
Henrik Schittenhelm ◽  
Xudong Fan ◽  
Phillip F. Britt ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Time Resolved ◽  
Laser Synthesis ◽  
Single Wall Carbon ◽  
In Situ Diagnostics

Monitoring Polymer-Assisted Mechanochemical Cocrystallisation Through in Situ X-Ray Powder Diffraction

2020 ◽  
Author(s):  
Luzia S. Germann ◽  
Sebastian T. Emmerling ◽  
Manuel Wilke ◽  
Robert E. Dinnebier ◽  
Mariarosa Moneghini ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Powder Diffraction ◽  
Reaction Rate ◽  
Polymer Additives ◽  
Time Resolved ◽  
X Ray

Time-resolved mechanochemical cocrystallisation studies have so-far focused solely on neat and liquid-assisted grinding. Here, we report the monitoring of polymer-assisted grinding reactions using <i>in situ</i> X-ray powder diffraction, revealing that reaction rate is almost double compared to neat grinding and independent of the molecular weight and amount of used polymer additives.<br>

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