Structural Studies of Chemisorption on Silicon Surfaces
Author: Bhupendra N. Dev
Publisher:
Published: 1985
Total Pages: 193
ISBN-13:
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Author: Bhupendra N. Dev
Publisher:
Published: 1985
Total Pages: 193
ISBN-13:
DOWNLOAD EBOOKAuthor: Erik Jonathan Nelson
Publisher:
Published: 1999
Total Pages: 596
ISBN-13:
DOWNLOAD EBOOKAuthor: Hong-Qing Shi
Publisher:
Published: 2004
Total Pages: 312
ISBN-13:
DOWNLOAD EBOOKAuthor: J Anderson
Publisher: Elsevier
Published: 2012-12-02
Total Pages: 568
ISBN-13: 0323145698
DOWNLOAD EBOOKChemisorption and Reactions on Metallic Films, Volume 1 is a six-chapter text that describes the role of evaporated metal films in advancing the understanding of the metal-gas interface chemistry. Chapter 1 presents electron microscopy and diffraction studies and their contributions in elucidating the growth and structure of polycrystalline and epitaxially grown films. Chapter 2 describes the techniques of preparation and characterization of metallic films and examines the heats of adsorption, electrical conductivity, surface area, and sticking probabilities of such films. Chapter 3 discusses the strength of pairwise interactions; the influence of the intermetallic bond on the equilibrium shape of metal crystallites; the bonding of individual metal atoms to different crystallographic planes; the interaction of metal atoms and crystallites with non-conducting substrates; and the effects of residual gases on this interaction. Chapters 4 and 5 address the adsorption of metallic films, with an emphasis on general trends in adsorptive and electronic properties of bulk metals. These chapters also discuss the effects of adsorption on the electrical conductance of island-like and coherent films and on the ferromagnetic properties of films. Chapter 6 evaluates the application of infrared spectroscopy to the studies of the surfaces of metal films and the use of the available infrared spectroscopic data in reconciling the results of adsorption studies on oxide-supported metal particles with those obtained with clean evaporated metal films prepared under ultra high vacuum conditions. Research scientists and graduate students who are interested in the fundamentals of adsorption and catalysis will find this volume invaluable.
Author: Anders Nilsson
Publisher: Elsevier
Published: 2011-08-11
Total Pages: 533
ISBN-13: 0080551912
DOWNLOAD EBOOKMolecular surface science has made enormous progress in the past 30 years. The development can be characterized by a revolution in fundamental knowledge obtained from simple model systems and by an explosion in the number of experimental techniques. The last 10 years has seen an equally rapid development of quantum mechanical modeling of surface processes using Density Functional Theory (DFT). Chemical Bonding at Surfaces and Interfaces focuses on phenomena and concepts rather than on experimental or theoretical techniques. The aim is to provide the common basis for describing the interaction of atoms and molecules with surfaces and this to be used very broadly in science and technology. The book begins with an overview of structural information on surface adsorbates and discusses the structure of a number of important chemisorption systems. Chapter 2 describes in detail the chemical bond between atoms or molecules and a metal surface in the observed surface structures. A detailed description of experimental information on the dynamics of bond-formation and bond-breaking at surfaces make up Chapter 3. Followed by an in-depth analysis of aspects of heterogeneous catalysis based on the d-band model. In Chapter 5 adsorption and chemistry on the enormously important Si and Ge semiconductor surfaces are covered. In the remaining two Chapters the book moves on from solid-gas interfaces and looks at solid-liquid interface processes. In the final chapter an overview is given of the environmentally important chemical processes occurring on mineral and oxide surfaces in contact with water and electrolytes. Gives examples of how modern theoretical DFT techniques can be used to design heterogeneous catalysts This book suits the rapid introduction of methods and concepts from surface science into a broad range of scientific disciplines where the interaction between a solid and the surrounding gas or liquid phase is an essential component Shows how insight into chemical bonding at surfaces can be applied to a range of scientific problems in heterogeneous catalysis, electrochemistry, environmental science and semiconductor processing Provides both the fundamental perspective and an overview of chemical bonding in terms of structure, electronic structure and dynamics of bond rearrangements at surfaces
Author: Tadashi Oshiro
Publisher:
Published: 1990
Total Pages: 254
ISBN-13:
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Publisher:
Published: 1990
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKThe research is part of a theoretical program on the structure of molecules adsorbed on solid surfaces and dissociative chemisorption which emphasis on transition metal substrates and electronic materials. An embedding theory for treating chemisorption on metals is further developed and applied to the reaction of hydrocarbon fragments and hydrogen coadsorbed on nickel, the dissociation of water on nickel, and the system H/Ni, NH3/Ni, and C6H6/Ni. The main emphasis of the work is on the energetics of adsorption as a function of surface site, the potential energy for adsorbate motion between surface sites and the energetics of surface reactions. Equilibrium geometries, vibrational frequencies and ionization potentials are also calculated. Preliminary work on the description of Si(100) surfaces has been completed in preparation of H/Si and N/Si adsorption studies. Studies of [pi] bonding on Si(111) were also completed and work was begun on the Auger ionization of F/Si. The original form of the embedding theory has been extended to make use of an effective potential representation of the bulk electrons interacting with the embedded surface region. Effective core potentials for Fe have been developed.
Author: Jorg Zegenhagen
Publisher: World Scientific
Published: 2013-01-30
Total Pages: 557
ISBN-13: 9814513105
DOWNLOAD EBOOKThe X-ray standing wave (XSW) technique is an X-ray interferometric method combining diffraction with a multitude of spectroscopic techniques. It is extremely powerful for obtaining information about virtually all properties of surfaces and interfaces on the atomic scale. However, as with any other technique, it has strengths and limitations. The proper use and necessary understanding of this method requires knowledge in quite different fields of physics and technology. This volume presents comprehensively the theoretical background, technical requirements and distinguished experimental highlights of the technique. Containing contributions from the most prominent experts of the technique, such as Andre Authier, Boris Batterman, Michael J Bedzyk, Jene Golovchenko, Victor Kohn, Michail Kovalchuk, Gerhard Materlik and D Phil Woodruff, the book equips scientists with all the necessary information and knowledge to understand and use the XSW technique in practically all applications.
Author: Matthan Norup
Publisher:
Published: 2018-11-28
Total Pages: 0
ISBN-13: 9781536146943
DOWNLOAD EBOOKChemisorption: Properties, Reactions and Uses opens by presenting chemisorption analysis by a pulse flow system for determining the metal nanosize for different heterogeneous catalysts. The authors show some examples of palladium, nickel, platinum, copper and gold nanoparticles supported on different supports, and discuss potentialities, criticalities and applicability of the technique.Following this, the synthesis of titanium oxide coatings on a high-porosity silicas surface with a regular pore structure was studied using a thermogravimetric setup with a McBain balance and atomic force microscopy. The kinetic dependences of chemisorption processes used in the molecular layering method were determined, and the difference in flow mechanisms and results of coating synthesis on meso- and microporous silicas are presented.The salt-ammonia chemisorption cycle has been extensively developed in many fields such as low-grade heat driven refrigeration, heat pump, thermal storage and power generation. As such, the kinetic models of salt-ammonia chemisorption were reviewed and discussed in this work, and the values of kinetic parameters in different models were summarized and listed for ammonia chemisorption.In the concluding study, heterophase textured films of vanadium dioxide on single-crystal silicon substrates have been synthesized by the sol-gel method from solutions of triethoxyvanadyl VO(OEt)3 in methyl cellosolve CH3OCH2CH2OH. The effect of ozone and ethanol vapor chemisorption on the parameters of the semiconductor-metal phase transition in vanadium dioxide VO2(B) are also studied.
Author:
Publisher:
Published: 1995
Total Pages: 700
ISBN-13:
DOWNLOAD EBOOKLists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.