Dissociative adsorption of NO upon Al(111): Orientation dependent charge transfer and chemisorption reaction dynamics

Komrowski, Andrew J.; Ternow, Ho̊kan; Razaznejad, Behrooz; Berenbak, B.; Sexton, Jonathon Z.; Zorić, Igor; Kasemo, Bengt Herbert; Lundqvist, Bengt I.; Stolte, S.; Kleyn, Aart W.; Kummel, Andrew C.

doi:10.1063/1.1519107

Cited by 44 publications

(26 citation statements)

References 29 publications

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“…This can be understood as follows: only O 2 molecules close to parallel to the surface react at low E 0 while those perpendicular to the surface also contribute to the sticking at high E 0 , reducing S 0 ðHÞ=S 0 ðCÞ at higher E 0 . The reduction of S 0 ðHÞ=S 0 ðCÞ with decreasing E 0 at < 70 meV might be due to the steering effect [17,18], which redirects incoming molecules to favorable orientations and is known to be dominant at lower E 0 . The precursor-mediated process, which tends to dominate at low E 0 [6,19,20], can also cause this behavior.…”

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confidence: 99%

Spin Correlation inO2Chemisorption on Ni(111)

Kurahashi

Yamauchi

2015

Phys. Rev. Lett.

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Molecular oxygen (O(2)) is a paramagnetic linear molecule, yet how its electron spin affects the chemisorption probability remains unclear. We here present the first spin- and alignment-resolved O(2) chemisorption experiment conducted with a single spin-rotational state-selected O(2) beam and a magnetized Ni(111) surface. The results show that the O(2) sticking probability is higher when its spin is oriented antiparallel to the majority spin direction of the Ni substrate. The spin dependence becomes more significant at low translational energy, and amounts to over 40% at thermal energy. This strong spin effect suggests that incident O(2) molecules keep high spin polarizations even at the position of the dissociation barrier.

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confidence: 99%

Spin Correlation inO2Chemisorption on Ni(111)

Kurahashi

Yamauchi

2015

Phys. Rev. Lett.

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“…Oxygen is known to have a strong affinity with aluminum and understanding the details at the molecular level of the oxidation of aluminum has been, and remains, a challenge [34,35]. Experimental works [36,37] support the existence of dissociative adsorption of O 2 (yielding two O-atoms on the surface) and also abstractive adsorption yielding a single O-atom on the surface and an O-atom in the gas-phase. Libisch et al [34] identified abstractive adsorption as the dominant channel at low incident energies, i.e., at low temperatures.…”

Section: Oxygen (O 2 ) and Chlorine (Cl 2 )mentioning

confidence: 93%

Gas-surface thermochemistry and kinetics for aluminum particle combustion

Glorian¹,

Catoire²,

Gallier³

et al. 2015

Proceedings of the Combustion Institute

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“…The highly reactive nature of the N-end approach has also been demonstrated for NO/Al(111), and is understood well with DFT calculations. [82] Molecular orientation effects in reactive systems were also investigated extensively by Heinzmann's group, with measurements of the sticking probability and detection of gas-phase products on metal surfaces. [83] They found that the N-end approach is more reactive in the strongly bound NO/Ni(100) [83] and Pt(100) [84] systems, while in the reaction of oriented N2O with alkali-metal-adsorbed Pt(100) and Rh(100), [85] harpooning reactions occur preferentially with the O-end approach, resulting in the effective production of N2 molecules.…”

Section: Molecular Orientation Effectsmentioning

confidence: 99%

Supersonic Molecular Beam Experiments on Surface Chemical Reactions

Okada

2014

The Chemical Record

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The interaction of a molecule and a surface is important in various fields, and in particular in complex systems like biomaterials and their related chemistry. However, the detailed understanding of the elementary steps in the surface chemistry, for example, stereodynamics, is still insufficient even for simple model systems. In this Personal Account, I review our recent studies of chemical reactions on single-crystalline Cu and Si surfaces induced by hyperthermal oxygen molecular beams and by oriented molecular beams, respectively. Studies of oxide formation on Cu induced by hyperthermal molecular beams demonstrate a significant role of the translational energy of the incident molecules. The use of hyperthermal molecular beams enables us to open up new chemical reaction paths specific for the hyperthermal energy region, and to develop new methods for the fabrication of thin films. On the other hand, oriented molecular beams also demonstrate the possibility of understanding surface chemical reactions in detail by varying the orientation of the incident molecules. The steric effects found on Si surfaces hint at new ways of material fabrication on Si surfaces. Controlling the initial conditions of incoming molecules is a powerful tool for finely monitoring the elementary step of the surface chemical reactions and creating new materials on surfaces.

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Dissociative adsorption of NO upon Al(111): Orientation dependent charge transfer and chemisorption reaction dynamics

Cited by 44 publications

References 29 publications

Spin Correlation inO2Chemisorption on Ni(111)

Spin Correlation inO2Chemisorption on Ni(111)

Gas-surface thermochemistry and kinetics for aluminum particle combustion

Supersonic Molecular Beam Experiments on Surface Chemical Reactions

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