ESCA studies of metal-oxygen surfaces using argon and oxygen ion-bombardment

Kim, K.S.; Baitinger, W. E.; Amy, J. W.; Winograd, Nicholas

doi:10.1016/0368-2048(74)85023-1

Cited by 471 publications

(124 citation statements)

References 12 publications

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“…The observed binding energy, 853 eV, is in good agreement with that reported for Ni-metal, 852.9 eV (Kim et al, 1974). The aggressive chemical environment created in the etching experiment probably reduced Ni 2+ to Ni-metal, possibly via a Ni + intermediate which may have been responsible for the intermediate peak at 854 eV.…”

Section: Sorption Sites and Ion-etching Experimentssupporting

confidence: 86%

“…A single Co 2p3/2 photopeak was discriminated for Co-hectorite, the average binding energy of which (unetched samples) was 782.6 eV. The appearance of a satellite peak at about 5 eV greater energy than the main peak suggests that the origin of the photopeak must be a high-spin Co 2 § species (McIntyre and Cook, 1975;Kim et al, 1974). The observed binding energy for Co-hectorite agrees well with that obtained for Co 2 § substituted in an octahedral (COO6) site in lusakite, 782.6 eV (Koppelman and Dillard, 1978).…”

Section: X-ray Photoelectron Spectroscopic Datamentioning

confidence: 99%

“…The chemical violation of the surface using the etching technique (Kim et aL, 1974) is such that no claim of a new species can be made.…”

Section: Sorption Sites and Ion-etching Experimentsmentioning

confidence: 99%

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X-Ray Photoelectron Spectroscopic Study of Cobalt(II) and Nickel(II) Sorbed on Hectorite and Montmorillonite

Davison

McWhinnie

Hooper

1991

Clays and clay miner.

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Abstract--The safe disposal of 6~ 63Ni, and 59Ni has required considerable information on the interactions of Co 2+ and Ni 2+ with clay minerals in the geosphere. X-ray photoelectron spectroscopy (XPS) has been used to probe the sorption sites for Co 2+ and Ni 2+ on hectorite and montmorillonite. The spectra were measured for Co-hectorite, Ni-hectorite, and Ni-montmorillonite immediately following ion exchange and after washing the clay two and five times with distilled water. The spectra, recorded following etching of the surface with an argon ion beam, differentiate two sorption sites; a labile (to washing) fraction sorbed as ion pairs, and a non-labile fraction sorbed by ion exchange at broken bond and interlamellar sites. The data were consistent with the sorption of metal ions (Co 2 § NP +) in a c o m m o n "MO6" ligand environment.C& § had a greater affinity for exchange on hectorite than did NiZ+; but NP + had a greater affinity for the surface of montmorillonite than for hectorite. The argon ion etching of Ni-montmorillonite gave rise to a new photopeak of 853 eV, which was probably due to elemental Ni formed consequent to the chemical violation of the surface by ion etching.

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Section: Sorption Sites and Ion-etching Experimentssupporting

confidence: 86%

Section: X-ray Photoelectron Spectroscopic Datamentioning

confidence: 99%

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X-Ray Photoelectron Spectroscopic Study of Cobalt(II) and Nickel(II) Sorbed on Hectorite and Montmorillonite

Davison

McWhinnie

Hooper

1991

Clays and clay miner.

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“…The Ar + beam significantly affects the XPS spectrum in an energy range characteristic for bismuth. The phenomenon of metal reduction due to Ar + treatment was already observed for other metal oxides, e.g., CuO [51], TiO 2 [52,53], and MoO 3 [54]. In the case of electrooxidized samples, an additional peak marked as D at 532.4 eV has been found (see Fig.…”

Section: Xps Analysissupporting

confidence: 57%

Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?

Trzciński

Szkoda

Herman

et al. 2018

J Solid State Electrochem

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Bi 3 YO 6 , which is known as an ionic conductor, was tested here as an electrode and photoanode in contact with aqueous electrolytes. Bi 3 YO 6 was deposited onto the Pt substrate and the such prepared electrode was polarized in various aqueous electrolytes. The optical energy band gap of the material equal to 1.89 eV was determined using the Kubelka-Munk function resulting from the UV-Vis spectrum (allowed indirect transition) and also was calculated using the semi-empirical PM7 method (3.38 eV of HOMO-LUMO energy gap). Despite the yellow color of Bi 3 YO 6 , the tested material exhibits photoelectroactivity only in the UV range of electromagnetic radiation. The anodic photocurrent characteristic for n-type metal oxide semiconductors was recorded. The electrode exhibits diffusion-controlled cathodic activity while polarized in chloride-free aqueous electrolytes.

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“…В ранних работах (см., например, [23]), посвященных изучению закономерностей преимущественного распы-ления оксидов, не было обнаружено изменения стехио-метрического состава оксидов SiO 2 и Al 2 O 3 . Однако в более поздних работах такое изменение наблюдалось.…”

Section: обсуждение результатовunclassified

Электронно-Лучевая Зарядка Диэлектриков, Предварительно Облученных Ионами И Электронами Средних Энергий

Рау¹,

Татаринцев²,

Зыкова³

et al. 2017

Физика Твердого Тела

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Изучены эффекты зарядки диэлектрических мишеней при облучении электронами средних энергий в сканирующем электронном микроскопе. Установлены существенные различия кинетики зарядки для исходных образцов и образцов, предварительно облученных электронами и ионами. Эти различия объясняются радиационно-стимулированным дефектообразованием в образцах Al2O3 (сапфир) и SiO2, имеющим, однако, различную природу. Показана роль модификации структуры поверхности и изменения электрофизических характеристик поверхности, в частности эффекта растекания зарядов. Обнаружены критические значения дозы облучения как ионами Ar+, так и электронами, при которых начинается активное дефектообразование в диэлектрических мишенях, а также критические значения внутренних полей зарядов, вносящих существенный вклад во временные характеристики зарядки Al2O3 и SiO2. Работа выполнена при финансовой поддержке РФФИ (грант N 15-02-07819а). DOI: 10.21883/FTT.2017.08.44749.460

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ESCA studies of metal-oxygen surfaces using argon and oxygen ion-bombardment

Cited by 471 publications

References 12 publications

X-Ray Photoelectron Spectroscopic Study of Cobalt(II) and Nickel(II) Sorbed on Hectorite and Montmorillonite

X-Ray Photoelectron Spectroscopic Study of Cobalt(II) and Nickel(II) Sorbed on Hectorite and Montmorillonite

Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?

Электронно-Лучевая Зарядка Диэлектриков, Предварительно Облученных Ионами И Электронами Средних Энергий

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