2 edition of Spectroscopic studies of adsorbed species on metal surfaces. found in the catalog.
Spectroscopic studies of adsorbed species on metal surfaces.
Thesis (Ph.D), University of East Anglia, School of Chemical Sciences, 1989.
Pt, Pd, and Rh films of a few nanometers in thickness supported on glassy carbon (GC) and other substrates were prepared by electrochemical voltammetry. STM patterns illustrated that the prepared thin films are composed of crystallites of layer structure and exhibit a low surface roughness. Studies of in situ FTIR spectroscopy on chemisorption of CO and SCN- and formation of a polymer of o. X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique based on the photoelectric effect that can identify the elements that exist within a material (elemental composition) or are covering its surface, as well as their chemical state, and the overall electronic structure and density of the electronic states in the material.
Recently derived vibrational spectroscopic data from NO ligands in metal coordination or cluster compounds, corrected to ‘neutral coligand’ status, are used to help identify the structures of related surface species from NO chemisorbed on metal single-crystal surfaces at low coverage. The derived conclusions form the basis for a systematic review of the structural information derivable. Surface enhanced Raman spectroscopic studies on the adsorption behaviour of nitric oxide on a Ru covered Au nanoparticle film The dissociation of NO produced adsorbed atomic nitrogen and oxygen species to form Ru–N and Ru–O bonds, respectively. The present study suggested that the SERS technique with appropriate attractive metal.
In-situ FTIR studies on the acid-base equilibria of adsorbed species on well-defined metal electrode surfaces / Antonio Berna, Antonio Rodes and Juan M. Feliu Contributions of external reflection infrared spectroscopy to study the oxidation of small organic molecules / Teresa Iwasita and . X-Ray photoelectron spectroscopy (XPS) is used to monitor the different surface species that form under these environmental conditions. Adsorption of NO(2) on aluminum oxide particle surfaces results primarily in the formation of surface nitrate, NO(3)(-) with an oxidation state of +5, as indicated by a peak with binding energy of eV in.
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This chapter illustrates the in-situ Fourier transform infrared spectroscopy (FTIR) studies on the acid–base equilibria of adsorbed species on well-deﬁned metal electrode surfaces. Infrared spectroscopy is one of the most useful techniques mainly used for the in-situ characterization of interfaces at a molecular level.
Included here is a summary of findings made by the author from infrared investigations of the surface chemistry of simple and complex oxide catalysts. The focus is on spectral characteristics of active sites on oxide surfaces, namely hydroxyl groups, coordinatively unsaturated cations, and surface oxygen.
There is a detailed account of the method used for characterizing the oxidation state and. A case study: surface chemistry and surface structure of catalytic aluminas, as studied by vibrational spectroscopy of adsorbed species Claudio Morterra, Giuliana Magnacca Pages For solid samples possessing a high surface area: Transmission IR Spectroscopy: employing the same basic experimental geometry as that used for liquid samples and mulls.
This is often used for studies on supported metal catalysts where the large metallic surface area permits a high concentration of adsorbed species to be sampled. Book Review.
Infrared Spectroscopy of Absorbed Species on the Surface of Transition Metal Oxides. Price: £ No. of pages: Wiley, (English Translation, ). In situ spectroscopic studies of methane catalytic combustion over Co, Ce, and Pd mixed oxides deposited on a Spectroscopic studies of adsorbed species on metal surfaces.
book surface, Journal of Catalysis, / Author: J. Yarwood. The Au films (working electrode) used in this study were deposited directly on the reflecting plane of a non-doped Si prism using a modified electroless chemical deposition method outlined by Miyake et prism was first polished with a μm Al 2 O 3 slurry and successively sonicated in acetone and water to remove Al 2 O 3 residue.
After polishing, the Si prism was immersed in a In book: Handbook of Vibrational Spectroscopy. for transmission infrared spectroscopic surface chemistry studies is described. selection rule for species adsorbed on metal surfaces, a. Brundle C.R. () Electron Spectroscopy for the Investigation of Metallic Surfaces and Adsorbed Species.
In: Derouane E.G., Lucas A.A. (eds) Electronic Structure and Reactivity of Metal Surfaces. NATO Advanced Study Institutes Series (Series B: Physics), vol A discussion is given of possible mechanistic pathways for the production of surface 2-propoxide species and the two types of products, based on the infrared-supported assumption that the different adsorbed forms of 2-propoxide [and possibly adsorbed propanol on TiO 2.
The formation, potential-dependent structural change, and reduction of adsorbed nitrite at a platinum electrode were examined in M HClO4 and M NaClO4 by surface-enhanced infrared absorption spectroscopy (SEIRAS). The band assigned to the symmetric NO2 stretch of the nitro form of nitrite appeared at around cm−1 in both solutions.
Surface-enhanced Raman spectroscopy or surface-enhanced Raman scattering (SERS) is a surface-sensitive technique that enhances Raman scattering by molecules adsorbed on rough metal surfaces or by nanostructures such as plasmonic-magnetic silica nanotubes. The enhancement factor can be as much as 10 10 to 10 11, which means the technique may detect single molecules.
The problem of obtaining the infrared spectrum of a molecular monolayer adsorbed on a bulk metal is discussed. The intensity of an infrared absorption band in radiation reflected from the surface is calculated for (a) various optical constants of the adsorbed layer and the metal, (b) various thicknesses of the adsorbed layer, (c) various angles of incidence, and (d) both states of polarization.
Infrared Spectroscopy of Adsorbed Species on the Surface of Transition Metal Oxides 1st Edition by Anatoli Davydov (Author) ISBN ISBN X. Why is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book.
The digit and digit formats both work. Abstract. Methane activation has long been a challenging task in catalysis. There has been much theoretical and experimental work done for methane activation on metal and oxide surfaces, 1–5 and especially significant achievements have been made in oxidative coupling of methane 6–8 since But at a fundamental level, the mechanism of methane activation including how methane interacts.
Scope of ATRIRS adsorption studies. During the past two decades, the development of ATRIR spectroscopy to study adsorption reactions at particulate metal oxide film/water interfaces , ,  has led to considerable advances in understanding the surface chemistry of these gh corresponding IR studies of reactions with dry particulate oxide surfaces have been carried out for.
Electron energy loss spectroscopy (EELS) is a surface analysis method for measuring vibrational spectra of adsorbed species on metal surfaces. This paper summarizes recent work on the study of bonding of simple adsorbates on metal surfaces, and the identification of new chemical “intermediates” in reactions between two or more species in.
The infrared spectrum from 2-methylpropene (isobutene) adsorbed at room temperature on a Pt/SiO 2 catalyst is interpreted, with the help of the metal-surface selection rule, in terms of the presence of a mixture of π-bonded, di-σ, and alkylidyne (2-methylpropylidyne) surface species.
Heating and evacuation at °C retains the original alkylidyne, which occurs together with another surface. Infrared spectroscopy of adsorbed species on the surface of transition metal oxides.
Chichester ; New York: Wiley, © (OCoLC) Material Type: Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: A A Davydov; Colin H Rochester. Surface-enhanced infrared absorption spectroscopy (SEIRA) was used to examine the adsorption state of nitrogen monoxide (nitric oxide, NO) and the reduction of the adsorbed species.
The SEIRA spectra gave two distinct bands at − and − cm-1 with an additional weak band at − cm-1 at V, the frequencies of which are slightly dependent on the surface coverage. The. Pyrrole has been adsorbed on various metal oxides: reduced or unreduced ceria, alumina dehydroxylated to varying extents and an NaX zeolite.
Pyrrole adsorption was found to be either non-dissociative or dissociative (on the more basic adsorption sites), the pyrrolate anion being formed in the latter case. When boun. Decomposition of methanol over oxidized and reduced copper surfaces studied by double modulation Fourier transform infrared reflection absorption spectroscopy.
Applied Surface Science35 (3), DOI: /(89) David K. Lambert. Diode laser spectroscopy of adsorbed gas on metal surfaces.It was not until the s that the ir transmission method was again taken up by several groups to study adsorbed species on high surface area materials.() Perhaps the most remarkable of these.J.
Phys. Chem. ,88, Infrared Spectroscopic Study of N, Chemisorption on Rhodium Surfaces H. P. Wang and John T. Yates, Jr.* Surface Science Center, Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania