scholarly journals Threshold catalytic onset of carbon formation on CeO2 during CO2 electrolysis: mechanism and inhibition

2019 ◽  
Vol 7 (25) ◽  
pp. 15233-15243 ◽  
Author(s):  
Jiayue Wang ◽  
Sean R. Bishop ◽  
Lixin Sun ◽  
Qiyang Lu ◽  
Gulin Vardar ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Carbon Deposition ◽  
Pair Formation ◽  
Carbon Formation ◽  
X Ray ◽  
In Operando ◽  
Co2 Electrolysis

Suppressing Ce3+–Ce3+ pair formation avoids carbon deposition on CeO2-based electrode during CO2 electrolysis, found by in operando X-ray photoelectron spectroscopy.

Surface Characterization of Carbon-Bearing Magnetite (CBM) and Carbon-Bearing Ni(II)-Ferrite (CBNF)

1994 ◽  
Vol 344 ◽  
Author(s):  
T. Sano ◽  
K. Akanuma ◽  
M. Tsuji ◽  
Y. Tamaura
Keyword(s):  
Photoelectron Spectroscopy ◽  
Spinel Structure ◽  
Surface Characterization ◽  
Carbon Deposition ◽  
X Ray Diffraction ◽  
Xps Spectra ◽  
X Ray ◽  
Oxygen Ions ◽  
Diffraction Patterns

AbstractOxygen-deficient magnetite (ODM; Fe3O4-δ, δ>0) synthesized by reduction of magnetite with H2 at 300°C decomposed CO2 to carbon with an efficiency of nearly 100% at 300°C. In this reaction, two oxygen ions of the CO2 were incorporated into the spinel structure of ODM and carbon was deposited on the surface of ODM with zero valence to form visible particles. The particles of carbon separated from ODM were studied by Raman, energy-dispersive X-ray and wave-dispersive X-ray spectroscopies. The carbon which had been deposited on the ODM was found to be a mixture of graphite and amorphous carbon in at least two levels of crystallization. X-ray photoelectron spectroscopy and X-ray diffraction patterns of the carbon-bearing magnetite (CBM) showed no indication of carbide (Fe3C) or metallic iron (α-Fe) phase formation. In the C 1s XPS spectra of the CBM, no peaks were observed which could be assigned to CO2 or CO. X-ray diffractometry, chemical analysis and TG-MS measurement showed that the carbon-bearing Ni(II)-ferrite (CBNF) (Ni(II)/Fetotal = 0.15) synthesized by the carbon deposition reaction from CO2 with the H2-reduced Ni(II)-ferrite was represented by (Ni0.28Fe2.72O4.00)1-δ (Ni2+06.9Fe2+2.31O3.00)δCτ (δ= 0.27, τ= 0.17). The carbon of the CBNF gave the CIOlayer-like oxide containing some Ni2+ ions.

CO2 Adsorption Performance of N-Doped Ordered Microporous Carbons Templated from Zeolite HY

2011 ◽  
Vol 284-286 ◽  
pp. 2102-2105 ◽  
Author(s):  
Jin Zhou ◽  
Wen Li ◽  
Shu Ping Zhuo
Keyword(s):  
Photoelectron Spectroscopy ◽  
Carbon Deposition ◽  
X Ray Diffraction ◽  
Step Method ◽  
X Ray ◽  
Microporous Carbons ◽  
Adsorption Performance ◽  
Basic Nitrogen ◽  
Diffraction Patterns ◽  
Very High

Several microporous carbons were prepared by a two-step method using zeolite HY as a template, and were used as CO2 adsorbents. X-ray diffraction patterns present that the structure regularity of the zeolite has been well-replicated by the templated carbons. X-ray photoelectron spectroscopy confirms that the prepared carbons possess abundant nitrogen-containing groups due to the carbon deposition of acetonitrile. The prepared carbons show high CO2 adsorption capacity due to its very high microporous surface area and abundant basic nitrogen-containing groups.

In-operando and non-destructive analysis of the resistive switching in the Ti/HfO2/TiN-based system by hard x-ray photoelectron spectroscopy

2012 ◽  
Vol 101 (14) ◽  
pp. 143501 ◽  
Author(s):  
Thomas Bertaud ◽  
Malgorzata Sowinska ◽  
Damian Walczyk ◽  
Sebastian Thiess ◽  
Andrei Gloskovskii ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Destructive Analysis ◽  
In Operando ◽  
Non Destructive

scholarly journals In operando x-ray photoelectron spectroscopy studies of H2 oxidation and H2O electrolysis on gadolinia-doped ceria electrodes

2020 ◽  
Vol 3 (1) ◽  
pp. 014004
Author(s):  
Lei Wang ◽  
Yi Yu ◽  
Karen J Gaskell ◽  
Ethan J Crumlin ◽  
Zhi Liu ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Doped Ceria ◽  
X Ray ◽  
In Operando ◽  
Spectroscopy Studies ◽  
H2 Oxidation
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