Ellipsometric study of the effect of argon ion Bombardment on the structure and reactivity of Ag (111)

Albers, H.; Droog, John M.M.; Bootsma, G.A.

doi:10.1016/0039-6028(77)90254-0

Cited by 42 publications

(17 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our n and k values are in between the values for polycrystalline samples and those for the annealed single crystals of Albers [3,6].…”

Section: Measurements At Different Sweep Ratesmentioning

confidence: 56%

See 1 more Smart Citation

Oxygen electrosorption on Ag(111) and Ag(110) electrodes in NaOH solution

Droog

1980

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

The first stages of the anodic oxidation of Ag(111) and Ag(110) electrodes in NaOH solution were studied by potential sweep voltammetry and ellipsometry. It was found that in the potential region studied, dissolution of silver species and electrosorption of oxygen occur. The (110) face is much more reactive to oxygen than the (111) face. On Ag(ll0) oxygen is reversibly adsorbed via a process of random deposition. The half-width of the adsorption peak indicates attractive lateral interactions in the chemisorbed layer.

show abstract

“…Our n and k values are in between the values for polycrystalline samples and those for the annealed single crystals of Albers [3,6].…”

Section: Measurements At Different Sweep Ratesmentioning

confidence: 56%

“…Therefore, the possibility cannot be excluded that on this plane the oxygen adsorbs at irregularities on the surface, as was found by Albers et al for oxygen chemisorption from the gas phase [3,4,6]. Albers found that very carefully annealed Ag(lll) surfaces adsorbed hardly any oxygen.…”

Section: Measurements At Different Sweep Ratesmentioning

confidence: 90%

Oxygen electrosorption on Ag(111) and Ag(110) electrodes in NaOH solution

Droog

1980

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

show abstract

“…[24] (wavelength 632.8 nm, angle of incidence 68.6 + 0.3'). Most of the static ellipsometric measurements were done in two zones.…”

Section: Methodsmentioning

confidence: 99%

A study of the kinetics of the interactions of O2 and N2O with a Cu(111) surface and of the reaction of CO with adsorbed oxygen using aes, LEED and ellipsometry

Habraken¹,

Kieffer²,

Bootsma³

1979

Surface Science

221

View full text Add to dashboard Cite

The ~teractions of 02 and N20 in the low pressure range with a Cu(ll1) surface and of CO with adsorbed oxygen have been studied with ellipsometry, Auger electron spectroscopy and LEED. The adsorption of 02 was investigated in the 10-6-104Torr range and at crystal temperatures ranging from 23 to 4OO'C. 02 chemisorbs dissociatively with an initial reaction probability of about 10m3 and an apparent activation energy of 2-4 kcal/mol, which depends on the substrate temperature, up to a saturation coverage of 0.45. The probability of decomposition of N20 is 10ms at 300°C, and the activation energy is 10.4 kcal/mol For 250 < T< 4OO'C. The oxygen coverage saturates at B = 0.45 as well. For both oxidation reactions the kinetics can be described with a precursor state model. With LEED no superstructures were observed. The probability of the reaction of CO with adsorbed oxygen is 4 X lo-' at 250°C and is initially independent of the oxygen coverage. The reaction is assumed to proceed via a Langmuir-Hinshelwood mechanism. The activation energy for the reaction COad + oad -+ CO* is 18-20 kcal/mol.

show abstract

“…The ellipsometric procedure consisted of a continuous measurement of A and ji in one zone with an automatic nulling ellipsometer in the PCSA configuration [13,16]. The wavelength was 632.8 nm and the angle of incidence 70 & lo.…”

Section: Methodsmentioning

confidence: 99%

Sorption of oxygen on Cu(111)-Ni surfaces and its reaction with hydrogen

MESTERS¹,

DEKOSTER²,

GIJZEMAN³

et al. 1984

Applied Surface Science

View full text Add to dashboard Cite

The interaction of 0, with a Cu(lll)-Ni alloy and the reaction of sorbed oxygen with H, has been investigated with ellipsometry and AES. The surface alloys were prepared by dissociation of nickel carbonyl on a clean Cu(ll1) surface. Sorption of 0, can be described by a precursor state model for dissociative chemisorption followed by a first order reaction of adsorbed oxygen atoms to incorporated oxygen atoms. The initial sticking probability is 10-a at room temperature and increases with increasing crystal temperature.The first chemisorption of 0, on a freshly prepared alloy surface causes an irreversible surface reconstruction.The amount of oxygen in the near surface layer decreases with increasing crystal temperature.The reaction of sorbed oxygen with H, can be described by a nucleation and growth mechanism with a time dependent number of growth centers. The rate is strongly affected by an operating ionisation gauge.

show abstract

Ellipsometric study of the effect of argon ion Bombardment on the structure and reactivity of Ag (111)

Cited by 42 publications

References 40 publications

Oxygen electrosorption on Ag(111) and Ag(110) electrodes in NaOH solution

Oxygen electrosorption on Ag(111) and Ag(110) electrodes in NaOH solution

A study of the kinetics of the interactions of O2 and N2O with a Cu(111) surface and of the reaction of CO with adsorbed oxygen using aes, LEED and ellipsometry

Sorption of oxygen on Cu(111)-Ni surfaces and its reaction with hydrogen

Contact Info

Product

Resources

About