Arsenic adsorption and exchange with phosphorus on indium phosphide (001)

Li, C. H.; Li, L.; Law, D. C.; Visbeck, S.; Hicks, Robert F.

doi:10.1103/physrevb.65.205322

Cited by 33 publications

(20 citation statements)

References 28 publications

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“…Cerium and most rare earth elements are known to substitute for Ca in the francolite structure (McArthur 1985;Abed and Abu Murrey 1997). Li et al (2002) and Hughes and Drexler (1991) report the substitution of As for P. In this study, As most likely substituted P in the crystal structure of francolite, as indicated by the high significant positive correlation with PO 4 3− discussed previously and shown in Table 5 (Lazareva and Pichler 2007). It seems that these four elements were liberated from the phosphates to the groundwater of the aquifer proportionally.…”

Section: Discussionsupporting

confidence: 53%

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Hydrogeochemistry of groundwater from karstic limestone aquifer highlighting arsenic contamination: case study from Jordan

et al. 2015

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Groundwater wells in the Amman-Wadi Es Sir Aquifer (B2/A7) throughout Jordan are investigated for their arsenic (As) and element-by-element geochemical behavior. Groundwater wells are found to have total arsenic concentrations above the recommended levels designated by the Jordanian drinking water standard, the Environmental Protection Agency of the United States, and the World Health Organization. Arsenic distribution in the aquifer is variable, but it is detected with a concentration of ≥10 ppb in 87 samples out of the analyzed 150 groundwater samples, with a maximum concentration of 173 ppb. Elevated As concentrations can be attributed to several mechanisms. One of these mechanisms is accounted for to the interaction between groundwater and the natural phosphorite deposits in the upper part of the aquifer and oil shale deposits overlying it. The high significant correlation between arsenic, phosphorus, and calcium concentrations in the analyzed groundwater samples suggest that these elements are derived from the same source.Moreover, scanning electron microscopy shows the association of As with the P and Ca in the phosphorite; pyrite is present in the oil shale samples, which were collected from the Muwaqqar formation overlying the aquifer. EDAX analysis shows that substantial As concentrations are present in phosphate and pyrite. This study suggests that the major mechanism responsible for releasing As from the aquifer material into the groundwater is a simple dissolution reaction. However, Piper and Durov diagrams, correlation coefficients, and factor analysis all suggest that water interaction with phosphate and oil shale deposits, sorption of heavy metals, and simple dissolution of iron oxyhydroxides are together the primary factors affecting the chemistry of the groundwater and responsible for the elevated As values in some wells.

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Section: Discussionsupporting

confidence: 53%

“…6 and 7). The substitution of As for P has already been evidenced by many authors, e.g., Hughes and Drexler (1991), Lazareva and Pichler (2007), and Li et al (2002).…”

Section: Arsenic Geochemistry and Behaviormentioning

confidence: 80%

Hydrogeochemistry of groundwater from karstic limestone aquifer highlighting arsenic contamination: case study from Jordan

et al. 2015

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“…In addition, each set of four indium dimers is separated by a trench that is parallel to the [À1 1 0] direction. In this reconstruction, the empty dangling bonds associated with indium on the In-P heterodimer and the second-layer In-In dimers are available for chemical bonding [16,24].…”

Section: Peak Assignmentsmentioning

confidence: 99%

Phosphine and tertiarybutylphosphine adsorption on the indium-rich InP (001)-(2×4) surface

et al. 2006

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“…In particular, an ultrathin InAs film less than 1-nmthick was grown on InP ͑001͒ through an arsenicphosphorus exchange reaction. 8 Reflectance difference spectra were obtained for the (2ϫ1), (2ϫ4), and (4ϫ2) reconstructions of the InAs/InP heterostructure. By comparing these spectra to those of InP and InAs ͑001͒, we have identified the bulk and surface contributions to the reflectance anisotropy.…”

mentioning

confidence: 99%

“…Each InAs/InP ͑001͒ reconstruction was characterized by LEED, XPS, and STM. 8 In particular, x-ray photoelectron spectra were collected with a PHI 3057 spectrometer equipped with a hemispherical analyzer, multichannel detector, and Al K ␣ x-ray source. All XPS spectra were taken in small area mode with a 7°-acceptance angle and 23.5 eV pass energy.…”

mentioning

confidence: 99%

Reflectance difference spectroscopy of an ultrathin indium arsenide layer on indium phosphide (001)

Sun

Visbeck

et al. 2002

Applied Physics Letters

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Articles you may be interested inA rapid reflectance-difference spectrometer for real-time semiconductor growth monitoring with sub-second time resolution Rev.Reflectance anisotropy spectroscopy study of the surface reconstructions of decapped InP(001)A model system has been created which allows the surface and bulk contributions to the reflectance difference spectrum to be distinguished. In particular, an indium arsenide film, less than 10 Å thick, has been grown on indium phosphide ͑001͒. Reflectance difference spectra of the InAs/InP surfaces were collected and compared to those of InP and InAs. It was found that the InAs/InP heterostructures exhibited electronic transitions between surface states characteristic of InAs ͑001͒, while retaining the surface-perturbed bulk transitions characteristic of InP ͑001͒. Furthermore, the optical anisotropy arising from the arsenic dimer bonds was shifted 0.2 eV higher for InAs/InP compared to that for InAs. This shift is proportional to 1/a 2 , where a is the bulk lattice constant.

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Arsenic adsorption and exchange with phosphorus on indium phosphide (001)

Cited by 33 publications

References 28 publications

Hydrogeochemistry of groundwater from karstic limestone aquifer highlighting arsenic contamination: case study from Jordan

Hydrogeochemistry of groundwater from karstic limestone aquifer highlighting arsenic contamination: case study from Jordan

Phosphine and tertiarybutylphosphine adsorption on the indium-rich InP (001)-(2×4) surface

Reflectance difference spectroscopy of an ultrathin indium arsenide layer on indium phosphide (001)

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