An x‐ray photoelectron spectroscopic study of some chromium–oxygen systems

Desimoni, E.; Malitesta, Cosimino; Zambonin, P. G.; Riviére, J.C.

doi:10.1002/sia.740130210

Cited by 210 publications

(70 citation statements)

References 18 publications

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“…High intensity peak at 576.9 eV corresponds to Cr 2p 3/2 and other peak at 586.6 eV to Cr 2p 1/2 . [10][11][12] The difference in BE between these two peak is 9.7 eV which is close to the reported value. 10) With increase of sputtering time, intensity of the Cr peak increases and the peak position remains unchanged.…”

Section: Resultssupporting

confidence: 85%

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Electrochemical and Surface Analytical Approach to Passive Film on 200 Series Stainless Steels Formed in Sulfuric Acid

Rao¹,

Singhal²

2009

ISIJ International

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Section: Resultssupporting

confidence: 85%

“…The peaks at BE 576.6 eV and 577.5 eV were assigned to chromium oxide (Cr 2 O 3 ). 12,13) and chromium hydroxide (Cr(OH) 3 ), 14) respectively. While the peak at BE of 575.6 eV corresponding to Cr-N bonding.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and Surface Analytical Approach to Passive Film on 200 Series Stainless Steels Formed in Sulfuric Acid

Rao¹,

Singhal²

2009

ISIJ International

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“…The XPS investigation made in the present work (Fig. S3) has revealed that the surfaces correspond to The complexity of the C1s reference peaks, however, hinders a precise peak positioning and a distinction between Cr(OH) 3 and Cr 2 O 3 was not possible due to the proximity of the corresponding binding energies [41,42]. Thus, we assume that the temperature increase induced by light absorption, in this case, promotes amorphous-Cr 2 O 3 (or a mixture of oxides) to transform into the more thermodynamically stable crystallineCr 2 O 3 .…”

Section: Surface Characterizationmentioning

confidence: 64%

Electrochemical Investigation of the Hydrogen Evolution Reaction on Electrodeposited Films of Cr(OH)3 and Cr2O3 in Mild Alkaline Solutions

et al. 2017

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The hydrogen evolution reaction (HER) from water reduction is the main cathodic reaction in the sodium chlorate process. The reaction typically takes place on electrodes covered with a Cr(III) oxide-like film formed in situ by reduction of sodium dichromate in order to avoid reduction of hypochlorite and thereby increase the selectivity for the HER. However, the chemical structure of the Cr(III) oxide-like film is still under debate. In the present work, the kinetics of the HER were studied using titanium electrodes covered with electrodeposited Cr(OH) 3 or Cr 2 O 3 , which were characterized by means of scanning electron microscopy (SEM), energydispersive x-ray spectroscopy (EDX), x-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. A clear difference in the morphology of the deposited surfaces was obtained, and the structure could be revealed with Raman spectroscopy. The kinetics for the HER were investigated using potentiodynamic and potentiostatic techniques. The results show that the first electron transfer is rate limiting and that the activity decreases in the order Cr 2 O 3 @Ti > bare Ti > Cr(OH) 3 @Ti. The low activity obtained for Cr(OH) 3 @Ti is discussed in terms of the involvement of structural water in the HER and the slow ligand exchange rate for water in Cr(III) complexes, while the high activity obtained for Cr 2 O 3 @Ti is rationalized by a surface area effect in combination with reduction of surface water and water in solution.

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“…Doublet 1 + 2: Cr metal; doublet 3 + 4: Cr(III) oxide; doublet 5 + 6: Cr(III) hydroxide; doublet 7 + 8: potassium dichromate [27].…”

Section: Figurementioning

confidence: 99%

X-Ray Photoelectron Spectroscopic Characterization of Chemically Modified Electrodes Used as Chemical Sensors and Biosensors: A Review

2015

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Abstract:The characterization of chemically modified sensors and biosensors is commonly performed by cyclic voltammetry and electron microscopies, which allow verifying electrode mechanisms and surface morphologies. Among other techniques, X-ray photoelectron spectroscopy (XPS) plays a unique role in giving access to qualitative, quantitative/semi-quantitative and speciation information concerning the sensor surface. Nevertheless, XPS remains rather underused in this field. The aim of this paper is to review selected articles which evidence the useful performances of XPS in characterizing the top surface layers of chemically modified sensors and biosensors. A concise introduction to X-ray Photoelectron Spectroscopy gives to the reader the essential background. The application of XPS for characterizing sensors suitable for food and environmental analysis is highlighted.

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An x‐ray photoelectron spectroscopic study of some chromium–oxygen systems

Cited by 210 publications

References 18 publications

Electrochemical and Surface Analytical Approach to Passive Film on 200 Series Stainless Steels Formed in Sulfuric Acid

Electrochemical and Surface Analytical Approach to Passive Film on 200 Series Stainless Steels Formed in Sulfuric Acid

Electrochemical Investigation of the Hydrogen Evolution Reaction on Electrodeposited Films of Cr(OH)3 and Cr2O3 in Mild Alkaline Solutions

X-Ray Photoelectron Spectroscopic Characterization of Chemically Modified Electrodes Used as Chemical Sensors and Biosensors: A Review

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