HREELS study of the interaction of formic acid with ZnO(101̄0) and ZnO(0001̄)-O

Crook, S.; Dhariwal, H.S.; Thornton, G.

doi:10.1016/s0039-6028(97)00073-3

Cited by 61 publications

(48 citation statements)

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“…2(b) As it is superimposed on the strong symmetric OCO stretch signal, the position and shape of the weaker peak cannot be determined with any certainty. No bands are observed in the region around 1700 cm -1 , which would be expected for the υ(C=O) stretch of intact HCOOH molecules [33][34][35] . Thus, the room-temperature spectra confirm the assignment of the XPS spectra to formate and show an upright (bidentate) orientation of the molecule.…”

Section: Infrared Reflection Absorption Spectroscopymentioning

confidence: 82%

“…In addition, a resonance with similar, but inverted shape appears at ≈1540 cm -1 ; this indicates an in-plane dipole moment. These peak frequencies are characteristic for the symmetric (1370) and asymmetric (1540 cm -1 ) OCO stretch of formate species [33][34][35] . Two additional features in Fig.…”

Section: Infrared Reflection Absorption Spectroscopymentioning

confidence: 94%

“…In addition, a broad peak appears at ≈1710 cm -1 which can be assigned to the stretching vibration mode of υ(C=O) in molecularly adsorbed HCOOH [33][34][35] . This nicely fits the observation of molecular HCOOH upon low-temperature adsorption in XPS.…”

Section: (C)]mentioning

confidence: 99%

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Adsorption of Formic Acid on the Fe₃O₄(001) Surface

et al. 2015

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Section: Infrared Reflection Absorption Spectroscopymentioning

confidence: 82%

Section: Infrared Reflection Absorption Spectroscopymentioning

confidence: 94%

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Adsorption of Formic Acid on the Fe₃O₄(001) Surface

et al. 2015

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“…In fact, frequency analysis allows to scrutinize the adsorption mode of carboxylates on surfaces, especially on oxides where XPS data are less numerous than on metals. Three adsorption modes are envisaged ( Figure 74) and (COO) frequency analysis ( sym and  asym ) can help discriminating bridge or bidentate (2) configurations (for which sym-asym ≤  sym-asym (liquid)) from the monodentate (1) one ( symasym > sym-asym (liquid)) [327]. The  sym-asym of free formate in solution is (1580 -1351) = 229 cm -1 [328].…”

Section: Adsorption Of Amino Acids On Tiomentioning

confidence: 99%

Adsorption and self-assembly of bio-organic molecules at model surfaces: A route towards increased complexity

Costa

Pradier

Tielens

et al. 2015

Surface Science Reports

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Understanding the bio-physical-chemical interactions at nanostructured biointerfaces and the assembling mechanisms of so-called hybrid nano-composites is nowadays a keyissue for nanoscience in view of the many possible applications foreseen. The contribution of surface science in this field is noteworthy since, using a bottom-up approach, it allows the investigation of the fundamental processes at the basis of complex interfacial phenomena and thus it helps to unravelthe elementary mechanisms governing them. Nowadays it is well demonstrated that a wide variety of different molecular assemblies can form upon adsorption of small biomolecules at surfaces. The geometry of such self-organized structures can often be tuned by a careful control of the experimental conditions during the deposition process. Indeed an impressive number of studies exist (both experimental and -to a lesser extendtheoretical), which demonstrate the ability of molecular self-assembly to create different structural motifs in a more or less predictable manner, by tuning the molecular building blocks as well as the metallic substrate. In this frame, amino acidsand small peptides at surfaces are key, basic, systems to be studied. The amino acidsstructure is simple enough to serve as a model for the chemisorption of biofunctional molecules, but their adsorption at surfaces has applications in surface functionalization, in enantiospecific catalysis, biosensing, nanoparticles shape control or in emerging fields such as "green" corrosion inhibition. In this paper we review the most recent advancements in this field. We will start from amino acids adsorption at metal surfaces and we will evolve then in the direction of more complex systems, in thelight of the latest improvements of surface science techniques and of computational methods. On one side, we will focus on amino acids adsorption at oxide surfaces, on the other on peptide adsorption both at metal and oxide substrates. Particular attention will be drawn to the added value provided by the combination of several experimental surface science techniques and to the precious contribution of advanced complementary computational methods to resolve the details of systems of increased complexity. Finally, some hints into experiments performed in the presence of water and then characterized in UHV and in the related theoretical work will be presented. This is a further step towards abetter approximation of real biological systems. However, since the methods employed are often not typical of surface science, this topic is not developed in details.2

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“…Die gleiche Erhöhung der CO-Bindungsenergie durch CO 2 -Coadsorption wird auch in À1 und dessen Oberschwingungen vorherrschen. [14][15][16] Letztere wurden in den Kurven (b) und (c) durch FourierEntfaltung entfernt, sodass die Adsorbatbanden beobachtet werden können. Kurve (c) zeigt zusätzliche Banden bei 1010, 1335 und 1588 cm…”

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Die Steuerung der Reaktivität von Oxidoberflächen durch ladungsakzeptierende Adsorbate

et al. 2007

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Der Süd-Chemie zum 150-jährigen Firmenjubiläum gewidmet Der oberflächenchemische Ansatz zur heterogenen Katalyse beruht auf Untersuchungen an Modellkatalysatoren (übli-cherweise Einkristalloberflächen) im Ultrahochvakuum (UHV).[ [3,4] Die entsprechenden Resultate wurden in Tabelle 1 zusammengestellt. Die CO-AdAbbildung 1. Isothermen der CO-Adsorption auf a) CO 2 -freiem ZnOPulver (Nanotek); b) CO 2 -modifiziertem ZnO-Pulver, erste Adsorption; c) CO 2 -modifiziertem ZnO-Pulver, zweite Adsorption nach Evakuieren. Die berechnete Kurve für CO 2 -modifiziertes ZnO wird durch die durchgezogene Linie dargestellt. Alle Isothermen wurden bei Raumtemperatur erhalten. Die Bedeckung mit adsorbiertem CO 2 betrug 0.5 ML (Monolagen). Basierend auf der Dichte der Zn 2+ -Plätze auf der gemischtterminierten ZnO(1010)-Oberfläche entspricht 1 ML 9.8 mmol m À2 .[

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HREELS study of the interaction of formic acid with ZnO(101̄0) and ZnO(0001̄)-O

Cited by 61 publications

References 28 publications

Adsorption of Formic Acid on the Fe₃O₄(001) Surface

Adsorption of Formic Acid on the Fe₃O₄(001) Surface

Adsorption and self-assembly of bio-organic molecules at model surfaces: A route towards increased complexity

Die Steuerung der Reaktivität von Oxidoberflächen durch ladungsakzeptierende Adsorbate

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HREELS study of the interaction of formic acid with ZnO(101̄0) and ZnO(0001̄)-O

Cited by 61 publications

References 28 publications

Adsorption of Formic Acid on the Fe3O4(001) Surface

Adsorption of Formic Acid on the Fe3O4(001) Surface

Adsorption and self-assembly of bio-organic molecules at model surfaces: A route towards increased complexity

Die Steuerung der Reaktivität von Oxidoberflächen durch ladungsakzeptierende Adsorbate

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Adsorption of Formic Acid on the Fe₃O₄(001) Surface

Adsorption of Formic Acid on the Fe₃O₄(001) Surface