Photodesorption of molecular nitrogen from Pt(111)

Zehr, Robert T.; French, C.; Haynie, Brendan C.; Solodukhin, A. S.; Harrison, I.

doi:10.1016/s0039-6028(00)00010-8

Cited by 9 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This state is accessible to hot electrons excited in the Ag substrate by photon absorption, similarly to the P 2 N 2 O state. Interestingly, Harrison and coworkers have argued that this works only for chemisorbed, but not for physisorbed N 2 , since for the latter species the LUMO is above the vacuum level [35,36]. If this is correct, the species produced by photo-dissociation on Ag (111) would have to be chemisorbed.…”

Section: Photodesorption Of Nmentioning

confidence: 99%

UV photo-dissociation and photodesorption of N₂O on Ag(111)

Kim

Watanabe

Menzel

et al. 2010

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Section: Photodesorption Of Nmentioning

confidence: 99%

UV photo-dissociation and photodesorption of N₂O on Ag(111)

Kim

Watanabe

Menzel

et al. 2010

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

“…It was shown that on such a highly corrugated surface it was impossible to have stable molecular N 2 species elsewhere but on the step edges. Recently the adsorption of N 2 on the close-packed Pt(111) face was reported, , but this N 2 species is mainly physisorbed and exists only below 60 K.…”

Section: Discussionmentioning

confidence: 99%

1-D Reversible Phase of Chemisorbed N₂ on Stepped Pt Surfaces

2001

View full text Add to dashboard Cite

The behavior of the N 2 phase adsorbed exclusively on the steps of the Pt(335) and Pt(779) surfaces was studied at 88 K under N 2 gas flux by reflection-absorption infrared spectroscopy and molecular beam adsorption experiments. Under equilibrium N 2 pressure, the saturated 1-D chemisorbed layer is able to be additionally reversibly populated (by 2-20%). Under these conditions, fast isotopic exchange between 14 N 2 and 15 N 2 occurs. No chemisorption is detected on the terraces. The reversibly chemisorbed N 2 species is spectrally indistinguishable from the irreversibly preadsorbed N 2 (N-N frequency 2236-2230 cm -1 ) and therefore must be chemisorbed on vacant Pt step sites. The infrared feature undergoes a frequency decrease with increasing N 2 coverage, which is a result of two opposite effects: a vibrational coupling shift (upward) and a dominant static shift (downward). The proposed kinetic model involving terrace-and step-bound precursors explains the experimentally observed Langmuirian adsorption isotherm for the reversible N 2 phase. This is the first reported reversible precursor-mediated 1-D chemisorption, which obeys the same "pseudo-Langmuirian behavior" as is known for its 2-D analogues.

show abstract

“…Being of interest in itself, electronically induced desorption in combination with luminescence serves as an effective tool for the study of electron-stimulated processes in the bulk of a solid. Electronic desorption of solid nitrogen was studied under excitation with electrons [5][6][7][8][9], ions [10][11][12][13][14][15][16] and photons [17,18]. Current state of the problem is given in [19].…”

mentioning

confidence: 99%

Charged defects and defect‐induced processes in nitrogen films

Savchenko

Khyzhniy

Uyutnov

et al. 2014

Phys. Status Solidi C

View full text Add to dashboard Cite

Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation‐induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques – spectrally resolved thermally stimulated luminescence TSL and thermally stimulated exoelectron emission. Samples were probed in depth by varying electron energy, thus discriminating radiation‐induced processes in the bulk and at the surface. Spectroscopic evidence of the excited N2* (C3Πu) molecule desorption was obtained for the first time and mechanism of the phenomenon based on recombination of electron with intrinsic charged center N4+ was proposed. The key role of N3+ center dissociative recombination in generation of N radicals is suggested. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Photodesorption of molecular nitrogen from Pt(111)

Cited by 9 publications

References 14 publications

UV photo-dissociation and photodesorption of N₂O on Ag(111)

UV photo-dissociation and photodesorption of N₂O on Ag(111)

1-D Reversible Phase of Chemisorbed N₂ on Stepped Pt Surfaces

Charged defects and defect‐induced processes in nitrogen films

Contact Info

Product

Resources

About

Photodesorption of molecular nitrogen from Pt(111)

Cited by 9 publications

References 14 publications

UV photo-dissociation and photodesorption of N2O on Ag(111)

UV photo-dissociation and photodesorption of N2O on Ag(111)

1-D Reversible Phase of Chemisorbed N2 on Stepped Pt Surfaces

Charged defects and defect‐induced processes in nitrogen films

Contact Info

Product

Resources

About

UV photo-dissociation and photodesorption of N₂O on Ag(111)

UV photo-dissociation and photodesorption of N₂O on Ag(111)

1-D Reversible Phase of Chemisorbed N₂ on Stepped Pt Surfaces