IR-visible sum-frequency generation study of methanol adsorption and reaction on Ni(100)

Miragliotta, Joseph A.; Polizzotti, R. S.; Rabinowitz, P.; Cameron, S. D.; Hall, Richard B.

doi:10.1016/0301-0104(90)85012-l

Cited by 69 publications

(31 citation statements)

References 30 publications

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“…Alternatively, it may be that the O−H bond has a lower signal intensity because of its angle with respect to the surface plane. While CH 3 OH dissociation at low temperature (i.e., 90 K) has been observed on nickel surfaces, 43,64 it does not occur on all metal surfaces. 42 The CH 3 deformation band (1462 cm −1 ), symmetric stretch (2836 cm −1 ), and asymmetric stretch (2957 cm −1 ) do not appear until 4.0 langmuir.…”

Section: Resultsmentioning

confidence: 94%

Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue

et al. 2017

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The surface of an analogue to the meteoritic mineral schreibersite or (Fe,Ni) 3 P was investigated to provide insight into the interaction of the mineral surface with prebiotic molecules such as water, methanol, and formic acid. A protocol for creating synthetic metal-phosphide samples with a surface reflectivity suitable for reflection−absorption infrared spectroscopy (RAIRS) was developed and is outlined in this paper. Scanning electron microscopy coupled with energy dispersive spectroscopy revealed an average defect size less than 1 μm and evidence of subsurface phosphorus segregation. At surface temperatures between 120 and 140 K, RAIRS spectra indicate that water and formic acid interact molecularly with surface atoms, while methanol appears to dissociate into methoxy and protons upon adsorption. The observed infrared spectra provide insight into the adsorption geometries of these prebiotic molecules on synthetic schreibersite. This data suggests the importance of the schreibersite mineral surface in aqueous-phase schreibersite-mediated phosphorylation experiments that have been performed by others and strengthens the argument that schreibersite-induced chemistry could occur in astrochemical environments.

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Section: Resultsmentioning

confidence: 94%

Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue

et al. 2017

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“…In frequency-domain VSFG [24][25][26][27], the infrared and probe lasers are both narrowband (although generally not continuous-wave) sources. In a typical implementation, the probe light is of fixed frequency and the infrared frequency is variable.…”

Section: Experimental Implementationsmentioning

confidence: 99%

Reexamining the interpretation of vibrational sum-frequency generation spectra

Rivera

Fourkas

2011

International Reviews in Physical Chemistry

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Vibrational sum-frequency generation (VSFG) has become a widely used technique for studying molecular orientation and intermolecular structure at interfaces. Due to the interfacial and vibrational selectivity of this technique, it can be used to probe molecular monolayers that are buried within bulk materials. Here, we present a critical review and examination of the assumptions that are generally used in the interpretation of VSFG spectra. This review focuses on three different aspects of VSFG spectroscopy. First, we examine the effect of dynamics (both reorientation and energy transfer) on the interpretation of VSFG spectra. Second, we consider whether (and under what circumstances) VSFG spectra cannot be interpreted solely in terms of the spectral properties of individual molecules. Third, we consider whether VSFG spectra obtained in different modes (frequency-domain, time-domain and broadband) should provide identical information. We conclude with a discussion of the challenges and opportunities provided by the revised viewpoint of VSFG that we present.

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“…The most striking feature is the disappearance of the CH 2 stretching peaks due to polyethylene, and the appearance of two new bands at 2822 and 2880 cm −1 . These two peaks are characteristic for the methoxy group (OCH 3 ), according to the surface vibrational study by Miragliotta et al [41] and other vibrational studies of this chromophore [42]. These indicate that this commercial polymer surface is dominated by methoxycontained species rather than polyethylene.…”

Section: Studies Of Surface Structures and Compositions Ofmentioning

confidence: 67%

Sum frequency generation (SFG) - surface vibrational spectroscopy studies of buried interfaces: catalytic reaction intermediates on transition metal crystal surfaces at high reactant pressures; polymer surface structures at the solid-gas and solid-liquid interfaces

Chen¹,

Gracias²,

Somorjai³

1999

Applied Physics B: Lasers and Optics

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IR-visible sum-frequency generation study of methanol adsorption and reaction on Ni(100)

Cited by 69 publications

References 30 publications

Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue

Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue

Reexamining the interpretation of vibrational sum-frequency generation spectra

Sum frequency generation (SFG) - surface vibrational spectroscopy studies of buried interfaces: catalytic reaction intermediates on transition metal crystal surfaces at high reactant pressures; polymer surface structures at the solid-gas and solid-liquid interfaces

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IR-visible sum-frequency generation study of methanol adsorption and reaction on Ni(100)

Cited by 69 publications

References 30 publications

Adsorption of Water, Methanol, and Formic Acid on Fe2NiP, a Meteoritic Mineral Analogue

Adsorption of Water, Methanol, and Formic Acid on Fe2NiP, a Meteoritic Mineral Analogue

Reexamining the interpretation of vibrational sum-frequency generation spectra

Sum frequency generation (SFG) - surface vibrational spectroscopy studies of buried interfaces: catalytic reaction intermediates on transition metal crystal surfaces at high reactant pressures; polymer surface structures at the solid-gas and solid-liquid interfaces

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Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue

Adsorption of Water, Methanol, and Formic Acid on Fe₂NiP, a Meteoritic Mineral Analogue