Gas-Surface Interactions Via Photoelectron Spectroscopy PDF Download
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Author: Mg Salya
Publisher:
ISBN: 9783096275958
Category : Science
Languages : en
Pages : 0
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Author: Mg Salya
Publisher:
ISBN: 9783096275958
Category : Science
Languages : en
Pages : 0
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Book Description
Author: Howard Saltsburg
Publisher: Elsevier
ISBN: 1483270637
Category : Science
Languages : en
Pages : 568
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Book Description
Fundamentals of Gas–Surface Interactions presents the study of the surface itself and the study of the gas phase partner of the interaction in which physical or chemical transformation of the gas resulted from that interaction. This book discusses the study of the energy and momentum exchanges resulting from the gas–solid physical interaction in which either gas or solid phase properties can be measured. Organized into three parts encompassing 33 chapters, this book begins with an overview of the different sensitive physical methods for the study of surface topography, surface defects, and surface irregularities to an accuracy of a few Angstroms. This text then reviews the adsorption at very low coverage that has yielded to equilibrium analysis. Other chapters consider the measurement of surface area by adsorption and optical techniques. The final chapter deals with scattering processes including momentum and energy transfer. This book is a valuable resource for engineers.
Author: Ricardo Diez Muino
Publisher: Springer Science & Business Media
ISBN: 3642329551
Category : Science
Languages : en
Pages : 439
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Book Description
This book gives a representative survey of the state of the art of research on gas-surface interactions. It provides an overview of the current understanding of gas surface dynamics and, in particular, of the reactive and non-reactive processes of atoms and small molecules at surfaces. Leading scientists in the field, both from the theoretical and the experimental sides, write in this book about their most recent advances. Surface science grew as an interdisciplinary research area over the last decades, mostly because of new experimental technologies (ultra-high vacuum, for instance), as well as because of a novel paradigm, the ‘surface science’ approach. The book describes the second transformation which is now taking place pushed by the availability of powerful quantum-mechanical theoretical methods implemented numerically. In the book, experiment and theory progress hand in hand with an unprecedented degree of accuracy and control. The book presents how modern surface science targets the atomic-level understanding of physical and chemical processes at surfaces, with particular emphasis on dynamical aspects. This book is a reference in the field.
Author: D. P. Woodruff
Publisher: Cambridge University Press
ISBN: 9780521424981
Category : Science
Languages : en
Pages : 612
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Book Description
Revised and expanded second edition of the standard work on new techniques for studying solid surfaces.
Author: Shigemasa Suga
Publisher: Springer Nature
ISBN: 3030640736
Category : Science
Languages : en
Pages : 511
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Book Description
This book presents photoelectron spectroscopy as a valuable method for studying the electronic structures of various solid materials in the bulk state, on surfaces, and at buried interfaces. This second edition introduces the advanced technique of high-resolution and high-efficiency spin- and momentum-resolved photoelectron spectroscopy using a novel momentum microscope, enabling high-precision measurements down to a length scale of some tens of nanometers. The book also deals with fundamental concepts and approaches to applying this and other complementary techniques, such as inverse photoemission, photoelectron diffraction, scanning tunneling spectroscopy, as well as photon spectroscopy based on (soft) x-ray absorption and resonance inelastic (soft) x-ray scattering. This book is the ideal tool to expand readers’ understanding of this marvelously versatile experimental method, as well as the electronic structures of metals and insulators.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 472
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Book Description
The research outlined in this dissertation focuses on understanding the role of metal-sulfur interactions as applied to bioinorganic and organometallic systems. This metal-sulfur interaction is analyzed using both gas-phase photoelectron spectroscopy (PES) and density functional theory (DFT). Gas-phase photoelectron spectroscopy is the most direct probe of electronic structure and is used in these studies to probe the molecular orbital energy levels of these model compounds, giving rise to an understanding of the metal and sulfur orbital interactions and characters (i.e. is an orbital primarily metal or sulfur based). Using density functional theory, orbital energies, overlap, and characters can be calculated and complement the PES experiments allowing for a detailed understanding of the electronic structure. The first part of my dissertation explains the design and implementation of a dual source gas-phase ultraviolet/X-ray photoelectron spectrometer (UPS/XPS). This gas-phase UPS/XPS can be used to quantify the bonding/antibonding character of frontier molecular orbitals, with specific applications to metal-sulfur interactions, allowing for a thorough analysis of the metal-sulfur interaction. The second part of the dissertation explores using model complexes, of the type Cpsub2subV(dithiolate) (where Cp is cyclopentadienyl and dithiolate is 1,2-ethenedithiolate or 1,2-benzenedithiolate), along with PES and DFT calculations to investigate the role of the pyranopterindithiolate cofactor and the dsup1supelectron configuration in modulating the redox potential and electron transfer in the active sites of molybdenum enzymes. This study shows that the dsup1supelectronic configuration offers a low energy electron transfer pathway for the reoxidation of the active site molybdenum center. The third part of the dissertation explores the use of model compounds that specifically focus on iron-thiolate interactions in biological systems, and the effect of electronic energy matching and sterics on the oxidation potential of this interaction. This study has shown that the metal-sulfur interaction is sensitive to the orientation of the thiolate ligand, and that during oxidation an"electronic-buffering effect"makes assigning a formal oxidation state to the metal center almost meaningless. All of these studies illustrate how the thiolate ligand can modulate the electron density and oxidation potential of the metal-sulfur interaction and the implication of this interaction to biological electron transfer.
Author: J. H. D. Eland
Publisher: Butterworth-Heinemann
ISBN:
Category : Science
Languages : en
Pages : 296
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Book Description
Author: Christopher M. Arble
Publisher:
ISBN: 9780438595781
Category :
Languages : en
Pages : 171
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Book Description
In recent years there has been a significant drive in the surface science to investigate heterogeneous processes under realistic conditions. In this dissertation the quantification and analysis of heterogeneous systems were explored by a variety of techniques to elucidate complex electronic and chemical properties of surfaces in the presence of fundamental gases. In particular, photoelectron spectroscopy operated under ambient pressures was employed to assess chemical reactions and phase transitions of model and applied surfaces. Specifically, this dissertation will focus on the impact of adsorption of water and oxygen on interfacial compositions of salt and metal oxide surfaces. First the extremely hydroscopic system of zinc bromide was investigated as a function of relative humidity with high pressure photoelectron spectroscopy. Advanced analysis of isothermal water uptake yielded results which quantified the energetics of adsorption. Innovative assessment of surface composition with lab-based photoelectron spectroscopy produced findings previously limited to synchrotron-based techniques. Second, the effects of water adsorption upon epitaxial metal oxide films structural relaxation through hydroxylation were investigated. Evidence based on experimental and theoretical observations suggest that various mechanisms of water dissociation may exist between manganese and nickel oxide films but also that the adsorption of water dimers at higher pressures significantly alters the reaction mechanism, promoting further hydroxylation events. Lastly, the photocatalytic properties of manganese oxides were explored under reaction conditions with exposure to light, water, and oxygen gases. Insights were made into the mechanisms of photo reactions with carbonaceous species with implications in photocatalysis. Overall this dissertation strives to highlight the analysis of complex heterogeneous systems with surface sensitive techniques focusing on in-operando conditions that are of broad interest to the surface science community and to provide enhanced understanding of important gas adsorption processes.
Author: Kai Siegbahn
Publisher: North-Holland
ISBN:
Category : Science
Languages : en
Pages : 216
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Book Description
Author: Howard Saltsburg
Publisher:
ISBN: 9780126169508
Category : Science
Languages : en
Pages : 0
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