Carbon monoxide adsorption on iron in the temperature range 85 to 350 K as revealed by X-ray and vacuum ultraviolet [He(II)] photoelectron spectroscopy

1975 ◽  
Vol 71 (0) ◽  
pp. 1715 ◽  
Author(s):  
Kosaku Kishi ◽  
M. Wyn Roberts
Keyword(s):  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Carbon Monoxide Adsorption ◽  
X Ray ◽  
Temperature Range

An intensity modulated fiber-optic carbon monoxide sensor based on Ag/Co-MOF in-situ coated thin-core fiber

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Lian Wang ◽  
Juncheng Zhou ◽  
Yuhao Chen ◽  
Liu Xiao ◽  
Guojia Huang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
Fiber Optic ◽  
Temperature Stability ◽  
Single Mode ◽  
X Ray ◽  
Intensity Modulated ◽  
Core Fiber

Abstract An intensity modulated fiber-optic carbon monoxide (CO) sensor by integrating in-situ solvothermal-growth Ag/Co-MOF sensing film is fabricated and evaluated. The Michelson interference sensing structure is composed of single-mode fiber (SMF), enlarged taper, thin-core fiber (TCF), and Ag film as the reflector. Ag/Co-MOF was coated on the cladding of the TCF as the sensing material, and the enlarged taper is located between TCF and SMF as the coupler. The structure, morphology, compositions and thermal stability of the Ag/Co-MOF sensing film were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), etc. The sensitivity of the sensor is 0.04515 dB/ppm, and the fitting parameter of the CO concentration is 0.99876. In addition, the sensor has the advantages of good selectivity, good signal and temperature stability, and it has potential application in trace CO detection.

Deposition of gold nanoparticles on organo-kaolinite — Application in electrocatalysis for carbon monoxide oxidation

2011 ◽  
Vol 89 (7) ◽  
pp. 845-853 ◽  
Author(s):  
Sadok Letaief ◽  
Wendy Pell ◽  
Christian Detellier
Keyword(s):  
Carbon Monoxide ◽  
Gold Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Fine Particles ◽  
Raw Materials ◽  
Carbon Monoxide Oxidation ◽  
Functional Materials ◽  
Metallic State ◽  
Oxidation Reactions ◽  
X Ray

The clay mineral kaolinite was used as support of gold nanoparticles for heterogeneous catalysis of oxidation reactions, particularly of carbon monoxide oxidation. The application of clay minerals in the preparation of new functional materials provides an alternative approach for the use of these abundant raw materials. To improve the physicochemical properties of kaolinite, as well as to ensure a strong immobilization of the adsorbed species, kaolinite was functionalized by grafting 2-amino-2-methyl-1,3-propanediol on the internal and external surfaces of the octahedral sheets by reaction with the aluminol groups. Gold nanoparticles were then deposited on the external surfaces of the fine particles of the functionalized kaolinite. The resulting gold kaolinite nanohybrid material was characterized by various physicochemical techniques. X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry confirmed that gold was effectively reduced to the metallic state during adsorption onto the external surfaces of the modified kaolinite. The gold nanoparticles have a narrow size distribution: more than 88% are less than 4 nm in diameter. Gold nanoparticles deposited on kaolinite catalyze the electro-oxidation of carbon monoxide in alkaline solution at room temperature.

Carbon monoxide oxidation by nitric oxide on iridium (111) studied by x-ray and uv-photoelectron spectroscopy

1977 ◽  
Vol 1 (1) ◽  
pp. 25-32 ◽  
Author(s):  
P.A. Zhdan ◽  
G.K. Boreskov ◽  
A.I. Boronin ◽  
A.P. Schepelin ◽  
W.F. Egelhoff ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
Carbon Monoxide Oxidation ◽  
X Ray ◽  
Uv Photoelectron Spectroscopy

Investigations of the Interaction of Nickel and Carbon Monoxide with Solid Films of C60and C70by UV and X-Ray Photoelectron Spectroscopy

1993 ◽  
Vol 1 (1) ◽  
pp. 75-91 ◽  
Author(s):  
Ram Seshadri ◽  
V. Vijayakrishnan ◽  
A. K. Santra ◽  
A. Govindaraj ◽  
C. N.R. Rao
Keyword(s):  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Solid Films

Development of a high-precision XYZ translator and estimation of beam profile of the vacuum ultraviolet and soft X-ray undulator beamline BL-13B at the Photon Factory

2020 ◽  
Vol 27 (4) ◽  
pp. 923-933
Author(s):  
Yoshihiro Aiura ◽  
Kenichi Ozawa ◽  
Kazuhiko Mase ◽  
Makoto Minohara ◽  
Satoshi Suzuki
Keyword(s):  
High Precision ◽  
Photoelectron Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Chemical Compositions ◽  
X Ray ◽  
Measurement Capability ◽  
Photon Factory ◽  
Experimental Apparatus ◽  
Elemental Analyses ◽  
Microscopic Measurement

A high-precision XYZ translator was developed for the microanalysis of electronic structures and chemical compositions on material surfaces by electron spectroscopy techniques, such as photoelectron spectroscopy and absorption spectroscopy, utilizing the vacuum ultraviolet and soft X-ray synchrotron radiation at an undulator beamline BL-13B at the Photon Factory. Using the high-precision translator, the profile and size of the undulator beam were estimated. They were found to strongly depend on the photon energy but were less affected by the polarization direction. To demonstrate the microscopic measurement capability of an experimental apparatus incorporating a high-precision XYZ translator, the homogeneities of an SnO film and a naturally grown anatase TiO2 single crystal were investigated using X-ray absorption and photoemission spectroscopies. The upgraded system can be used for elemental analyses and electronic structure studies at a spatial resolution in the order of the beam size.

Study of Thermal Oxide Solid-State Reaction on GaAs Surfaces

1991 ◽  
Vol 238 ◽  
Author(s):  
Z. Lu ◽  
D. Chen ◽  
R. M. Osgood ◽  
D. V. Podlesnik
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Photoelectron Spectroscopy ◽  
Interface Reaction ◽  
Decomposition Reaction ◽  
Thermal Reaction ◽  
Native Oxide ◽  
X Ray ◽  
Temperature Range ◽  
Thermal Oxide

ABSTRACTIn this paper, we will present a study of the thermal reaction of AsjOs with GaAs at temperatures below 550°C using monochromatic X-ray photoelectron spectroscopy (MXPS). A solid-state interface reaction of 4GaAs + 3AS2O5 → 2Ga2O3 + 3AS2O3 + 4As, which includes the usual native oxide thermal reaction: 2GaAs + AS2O3 → Ga2O3 + 4As, as well as a decomposition reaction AS2O5 → AS2O3 + O2 is responsible for the thermal reaction in this temperature range.

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