CO2 electrolysis – Complementary operando XRD, XAS and Raman spectroscopy study on the stability of CuxO foam catalysts

2020 ◽  
Vol 389 ◽  
pp. 592-603 ◽  
Author(s):  
Abhijit Dutta ◽  
Motiar Rahaman ◽  
Burkhard Hecker ◽  
Jakub Drnec ◽  
Kiran Kiran ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Spectroscopy Study ◽  
The Stability ◽  
Co2 Electrolysis

Novel Environmental Control Chamber for FT-Raman Spectroscopy: Study of in situ Phase Change of Sulfur

1997 ◽  
Vol 51 (1) ◽  
pp. 101-107 ◽  
Author(s):  
H. G. M. Edwards ◽  
D. W. Farwell ◽  
J. M. C. Turner ◽  
A. C. Williams
Keyword(s):  
Raman Spectroscopy ◽  
Phase Change ◽  
Monoclinic Phase ◽  
Environmental Control ◽  
Atmospheric Conditions ◽  
Spectroscopy Study ◽  
Ft Raman Spectroscopy ◽  
The Stability ◽  
Ft Raman

The adaptation and construction of an environmental chamber suitable for FT-Raman spectroscopy is described for the recording of Raman spectra of specimens at temperatures from 25 to 125 °C while exposed to different controlled synthetic atmospheric conditions. Test spectra were obtained from sulfur to illustrate the stability and applications of the system. The α rhombic/β monoclinic phase change in sulfur was monitored as a function of time, and bands sensitive to this phase change have been identified.

In-Operando Raman Spectroscopy Study of Passivation Effects on Ni-CGO Electrodes in CO2 Electrolysis Conditions

2013 ◽  
Vol 57 (1) ◽  
pp. 3111-3117 ◽  
Author(s):  
V. Duboviks ◽  
R. C. Maher ◽  
G. Offer ◽  
L. F. Cohen ◽  
N. P. Brandon
Keyword(s):  
Raman Spectroscopy ◽  
Spectroscopy Study ◽  
In Operando ◽  
Co2 Electrolysis

scholarly journals Effect of Size of Multiwalled Carbon Nanotubes Dispersed in Gear Oils for Improvement of Tribological Properties

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Kodanda Rama Rao Chebattina ◽  
V. Srinivas ◽  
N. Mohan Rao
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Ball Milling ◽  
Multiwalled Carbon Nanotubes ◽  
Tribological Properties ◽  
Extreme Pressure ◽  
Multiwalled Carbon ◽  
Pristine Mwcnts ◽  
Gear Oil ◽  
The Stability

The aim of the paper is to investigate the effect of size of multiwalled carbon nanotubes (MWCNTs) as additives for dispersion in gear oil to improve the tribological properties. Since long pristine MWCNTs tend to form clusters compromising dispersion stability, they are mildly processed in a ball mill to shorten the length and stabilized with a surfactant before dispersing in lubricant. Investigations are made to assess the effect of ball milling on the size and structure of MWCNTs using electron microscopy and Raman spectroscopy. The long and shortened MWCNTs are dispersed in EP 140 gear oil in 0.5% weight. The stability of the dispersed multiwalled carbon nanotubes is evaluated using light scattering techniques. The antiwear, antifriction, and extreme pressure properties of test oils are evaluated on a four-ball wear tester. It is found that ball milling of MWCNTs has a strong effect on the stability and tribological properties of the lubricant. From Raman spectroscopy, it is found that ball milling time of up to 10 hours did not produce any defects on the surface of MWCNTs. The stability of the lubricant and the antiwear, antifriction, and extreme pressure properties have improved significantly with dispersion shortened MWCNTs. Ball milling for longer periods produces defects on the surface of MWCNTs reducing their advantage as oil additives.

scholarly journals Raman spectroscopy study of the behavior of the soft mode in a structural phase transition in the Pr3Sb5O12 crystal

2015 ◽  
Vol 57 (11) ◽  
pp. 2286-2289 ◽  
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Spectroscopy Study

scholarly journals Impact of Magnesium on the Structure of Aluminoborosilicate Glasses: A Solid‐State NMR and Raman Spectroscopy Study

2021 ◽  
Author(s):  
Nicolas Bisbrouck ◽  
Marco Bertani ◽  
Frédéric Angeli ◽  
Thibault Charpentier ◽  
Dominique de Ligny ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Solid State ◽  
Solid State Nmr ◽  
Spectroscopy Study

Raman spectroscopy study of acetonitrile at low temperature

2021 ◽  
Vol 246 ◽  
pp. 119065
Author(s):  
Shuo Zhang ◽  
Hongsheng Jia ◽  
Mingxing Song ◽  
He Shen ◽  
Li Dongfei ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Low Temperature ◽  
Spectroscopy Study

Raman spectroscopy study of Ga-doped ZnO ceramics: An estimative of the structural disorder degree

2021 ◽  
Vol 606 ◽  
pp. 412726
Author(s):  
Gabriela Gomes Miranda ◽  
Raphael Lucas de Sousa e Silva ◽  
Hermínia Veridiana dos Santos Pessoni ◽  
A. Franco
Keyword(s):  
Raman Spectroscopy ◽  
Structural Disorder ◽  
Spectroscopy Study ◽  
Disorder Degree ◽  
Doped Zno ◽  
Zno Ceramics

Raman spectroscopy study of the structure of gallium nitride epitaxial layers of different orientations

2016 ◽  
Vol 61 (3) ◽  
pp. 428-431
Author(s):  
A. A. Yugov ◽  
A. A. Donskov ◽  
T. G. Yugova ◽  
I. A. Belogorohov ◽  
Yu. N. Parhomenko
Keyword(s):  
Raman Spectroscopy ◽  
Gallium Nitride ◽  
Epitaxial Layers ◽  
Spectroscopy Study
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