Adsorption dynamics and angular dependency of contaminants on Ru mirror surfaces

Catalfano, M.; Kanjilal, A.; Al-Ajlony, A.; Harilal, S. S.; Hassanein, A.
January 2012
Journal of Applied Physics;Jan2012, Vol. 111 Issue 1, p016103
Academic Journal
A real time contamination of the Ru surface and corresponding effect on its work function were studied using extreme ultraviolet photoelectron spectroscopy with a 13.5-nm wavelength of light. The change in work function indicates formation of molecular dipoles, oriented outward from the Ru surface. X-ray photoelectron spectroscopy investigations suggest variation in electromagnetic interaction with the components of the adsorbed foreign species when the emission angle from the target surface was changed from 0° to 50°; H2O and C-On show a strong coupling at lower angles and OH dominates at higher angles, whereas carbon is found in the mid-range peaking at 30°.


Related Articles

  • Dependence of Water Vapour Adsorption on the Polarity of the Graphene Surfaces of Multi-wall Carbon Nanotubes. Bradley, Robert H.; Andreu, Aurik; Cassity, Kelby; Osbeck, Susan; Andrews, Rodney; Meier, Mark; Johnston, Colin // Adsorption Science & Technology;Dec2010, Vol. 28 Issue 10, p903 

    The adsorption of water by the graphene surfaces of multi-wall carbon nanotubes (MWCNTs) in either the untreated (4.3 atom% oxygen) or oxidised (22.3 atom% oxygen) surface states has been studied. Different concentrations of surface oxygen groups, which have been directly measured using XPS,...

  • Adsorption of CO2 on Amine-Grafted Activated Carbon. Bezerra, Diôgo P.; da Silva, Francisco W. M.; de Moura, Pedro A. S.; Sapag, Karim; Vieira, Rodrigo S.; Rodriguez-Castellon, Enrique; de Azevedo, Diana C. S. // Adsorption Science & Technology;2014, Vol. 32 Issue 2/3, p141 

    Adsorption on amine-grafted materials may be a potentially attractive alternative to capture CO2 from power plants. Activated carbon (AC) has been proposed as a potential adsorbent due to its natural affinity for CO2 and the possibility of tailoring its textural properties and surface chemistry...

  • One-Step Cohydrothermal Synthesis of Nitrogen-Doped Titanium Oxide Nanotubes with Enhanced Visible Light Photocatalytic Activity. Cheng-Ching Hu; Tzu-Chien Hsu; Li-Heng Kao // International Journal of Photoenergy;2012, Special section p1 

    Nitrogen-doped TiO2 nanotubes with enhanced visible light photocatalytic activity have been synthesized using commercial titania P25 as raw material by a facile P25/urea cohydrothermal method. Morphological and microstructural characteristics were conducted by transmission electron microscopy,...

  • X-ray Photoelectron Spectroscopic Studies of the Adsorption of Salivary Constituents on Enamel. KUBOKIT, Y.; TERAOKA, K.; OKADA, S. // Journal of Dental Research;May1987, Vol. 66 Issue 5, p1016 

    Time-dependent change of adsorption of salivary components on the outermost surface layer of enamel was studied by x-ray photoelectron spectroscopy. Adsorption of proteinaceous components, as monitored in terms of the relative mass of nitrogen, was detected within 30 min, increased with time,...

  • Interaction between silver nanowires and CO on a stepped platinum surface. Streber, R.; Tränkenschuh, B.; Schöck, J.; Papp, C.; Steinrück, H.-P.; McEwen, J.-S.; Gaspard, P.; Denecke, R. // Journal of Chemical Physics;8/14/2009, Vol. 131 Issue 6, p064702 

    We studied the interplay between Ag decoration of a stepped Pt(355) surface and CO adsorption by in situ high-resolution x-ray photoelectron spectroscopy. Varying amounts of Ag deposited at 300 K initially lead to a row-by-row growth starting from the lower Pt step edges. Such decoration of the...

  • Molecular adsorption on V2O3(0001)/Au(111) surfaces. Bandara, Athula; Abu-Haija, Mohammad; Höbel, Frank; Kuhlenbeck, Helmut; Rupprechter, Günther; Freund, Hans-Joachim // Topics in Catalysis;Dec2007, Vol. 46 Issue 1/2, p223 

    The adsorption of carbon monoxide (CO), propane (C3H8) and propene (C3H6) on V2O3(0001) films grown on Au(111) was studied by Temperature Programmed Desorption (TPD) and X-ray Photoelectron Spectroscopy (XPS). The “oxidized” surface (i.e., as prepared exhibiting V=O termination), the...

  • Synthesis of ultrathin carbon films by direct current filtered cathodic vacuum arc. Zhang, H.-S.; Komvopoulos, K. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 8, p083305 

    Filtered cathodic vacuum arc was used to synthesize ultrathin carbon films on silicon substrates. The depth profiles, near-surface chemical composition, fractions of tetrahedral (sp3) and trigonal (sp2) carbon atom hybridizations, roughness, and hardness of the carbon films were determined from...

  • CO adsorption and desorption on size-selected Pdn/TiO2(110) model catalysts: Size dependence of binding sites and energies, and support-mediated adsorption. Kaden, William E.; Kunkel, William A.; Roberts, F. Sloan; Kane, Matthew; Anderson, Scott L. // Journal of Chemical Physics;5/28/2012, Vol. 136 Issue 20, p204705 

    The nature of CO adsorption on Pdn/TiO2(110) (n = 1, 2, 7, 20) has been examined using temperature-programmed desorption (TPD), temperature-dependent helium ion scattering (TD-ISS), and X-ray photoelectron spectroscopy (XPS). All samples contain the same number of Pd atoms (0.10 ML-equivalent)...

  • Adsorption of Hg(II) from aqueous solution using amino-functionalized graphite nanosheets decorated with Fe 3 O 4 nanoparticles. Ma, Yingxia; La, Peiqing; Lei, Wenjuan; Lu, Cuiping; Du, Xueyan // Desalination & Water Treatment;Mar2016, Vol. 57 Issue 11, p5004 

    In this study, the property of 3-aminopropyltriethoxysilane modified graphite nanosheets (GNS) decorated with Fe3O4nanoparticles (Fe3O4-GNS-NH2hybrids) for adsorption of Hg(II) in aqueous solution were evaluated by batch methods. The adsorption mechanism was also studied by X-ray photoelectron...


Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics