Topic
Chemisorption
About: Chemisorption is a research topic. Over the lifetime, 16298 publications have been published within this topic receiving 554989 citations.
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TL;DR: The adsorption-desorption kinetics of H2O have been studied on three well-defined surface configurations of TiO2(110) using temperature programmed desorption (TPD) and modulated molecular beam scattering in order to measure the extent of dissociative adaption.
123 citations
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TL;DR: In this article, the adsorption, desorption and decomposition of three methyl halides (Cl, Br, and I) were studied on Pt(111) using high resolution electron energy loss spectroscopy (HREELS) and temperature programmed desorcption (TPD).
123 citations
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TL;DR: In this article, the changes in the ellipsometric angles Δ and ψ per oxygen atom upon adsorption and removal of oxygen depend on the coverage θ, the temperature and on the azimuth of the plane of incidence of the light beam.
123 citations
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TL;DR: In this paper, the average local ionization energy Is(r) and pyramidalization angle θP on (5,5) single-walled carbon nanotubes (SWCNT) of C70H20 with and without a Stone-Wales defect have been predicted computationally.
Abstract: The reactivities of various carbon sites on (5,5) single-walled carbon nanotubes (SWCNT) of C70H20 with and without a Stone-Wales defect have been predicted computationally. The properties determined include the average local ionization energy Is(r) and pyramidalization angle θP on the surfaces of the bare tubes, the chemisorption energies, bond lengths, stretching frequencies for chemisorbed H and F atoms, and the effects of H and F chemisorption upon the HOMO−LUMO energy gaps. There is a good correlation between the minima of the local ionization energy and the chemisorption energies at different carbon sites, indicating that Is(r) provides an effective means for rapidly and inexpensively assessing the relative reactivities of the carbon sites of SWCNTs. The pyramidalization angle (θP), which is a measure of local curvature, also shows a relationship to site reactivity. The most reactive carbon site, identified by having the lowest Is(r) and largest θP, is in the Stone-Wales defect region, which also...
123 citations
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TL;DR: In this article, the adsorption of phosphate anions on Ag, Au, and Cu electrodes from H2O and D2O solutions was studied by means of surface-enhanced Raman spectroscopy (SERS).
Abstract: The adsorption of phosphate anions on Ag, Au, and Cu electrodes from H2O and D2O solutions has been studied by means of surface-enhanced Raman spectroscopy (SERS). The interpretation of the spectra based on the solution Raman data and frequency shifts upon solution H2O/D2O exchange are presented. The prominent band at 1070−1100 cm-1, observed from adsorbed PO43- and HPO42- ions, exhibits downshifts of about 10 cm-1 in D2O solutions and has been assigned to the asymmetric P−O stretching mode. The corresponding asymmetric deformation mode has been assigned to the band located at ∼570 cm-1 which shows an upshift of 9−15 cm-1 in D2O solutions. Monodentate surface coordination of the PO43- and HPO42- ions is proposed. The dependence of the relative intensity of the internal modes on electrode potential was interpreted in terms of the migration of P−O groups from the surface as potential became more negative. Spectroscopic evidence was found for chemisorption of H2PO4- ion on the Cu electrodes, but no such evid...
123 citations