Download or read book Study of Adsorption at the Liquid Solid Interface by Spectroscopic Techniques written by M. J. D. Low and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report of a project concerned with the general topic of adsorption at the liquid-solid interface. Publications resulting from the work are: (1) The Fundamental Infrared Spectrum of the Ammonium Ion in Aqueous Solution. (2) Infrared Study of Adsorption in situ at the Liquid/Solid Interface. IV. The Utility of Internal Reflection Techniques. (3) Infrared Study of Adsorption in situ at the Liquid/Solid Interface. V. Adsorption of Octadecanol, Octadecylamine, and Octadecanedioic Acid on Silica, and a Criterion of Considering Competitive Adsorption. (4) Infrared Spectra of Water in Aqueous Solutions Using Internal Reflection Spectroscopy. (5) Quantitative Analysis of Aqueous Nitrite/Nitrate Solution by Infrared Internal Reflectance Spectrometry. (6) Infrared Internal Reflection Spectra of Methanol-Water Mixtures.

Download or read book Spectroscopic Studies of Molecules Adsorbed at the Solid liquid Interface written by Susanne Maree Heard and published by . This book was released on 1983 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Infrared Spectroscopic Studies of Adsorption at the Solid Liquid Interface written by K. Marshall and published by . This book was released on 1975 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Infrared Spectroscopic Studies of Adsorption at the Solid liquid Interface written by Kenneth Marshall and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multidimensional Spectroscopic Techniques for Monitoring Adsorption and Binding at Liquid solid Interfaces written by Rory H. Uibel and published by . This book was released on 2003 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vibrational Spectroscopy of Competitive Adsorption at a Liquid Solid Interface Using IR Visible Sum Frequency Generation written by J. Miragliotta and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical IR-Visible sum-frequency generation (SFG), a surface vibrational spectroscopy, has been used to study competitive adsorption at a hydroxylated ZrO2 surface in contact with a number of binary solutions. This technique is similar to surface second harmonic generation (SHG) in that it is forbidden (in the dipole approximation) in spatial regions possessing inversion symmetry. Therefore, systems consisting of an interface bound by centrosymmetric media give rise to a nonlinear response which is dominated by that of the interfacial region. In addition to being surface specific, the SFG signal from the liquid/solid interface can be resonantly enhanced when the incident IR laser source used in the generation process is tuned through a vibrational mode in the adsorbed species, provided the mode is both Raman and IR active. This vibrational information allows identification of the adsorbed molecule as well as measurements of surface coverage, molecular orientation, and adsorbate interactions for a number of the two-component liquid systems.

Download or read book Proteins at Solid Liquid Interfaces written by Philippe Déjardin and published by Springer Science & Business Media. This book was released on 2006-09-28 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book opens with a description of fundamental aspects of protein adsorption to surfaces, a phenomenon that plays a key role in biotechnological applications, especially at solid-liquid interfaces. Presented here are methods for studying adsorption kinetics and conformational changes such as optical waveguide lightmode spectroscopy (OWLS). Also described are sensitive bench techniques for measuring the orientation and structure of proteins at solid-liquid interfaces, including total internal reflection ellipsometry (TIRE), dual polarisation interferometry (DPI) and time of flight - secondary ion mass spectrometry (TOF–SIMS). A model study of fibronectin at polymer surfaces is included, as are studies using microporous membranes and textiles with immobilized enzymes for large-scale applications. Biocompatibility, anti-fouling properties and surface modification to modulate the adsorption and activity of biomolecules are among the other topics addressed in this invaluable book.

Download or read book written by Douglas H. Everett and published by Royal Society of Chemistry. This book was released on 1979-01-01 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.

Download or read book Universit r Bibliothek T bingen written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopic Considerations on Molecular Adsorption at the Solid liquid Interface written by Andrew Francis Bowfield and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding the Adsorption at Solid Liquid Interface and Its Consequences on Interfacial Phenomena written by Nishad Dhopatkar and published by . This book was released on 2017 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical adsorption at solid-liquid interface is an effective way to dynamically alter the surface properties text/italics{in-situ} and is prevalent in biology, geoscience, biotechnology, catalysis, food processing, agriculture, textiles, coatings, adhesives and lubricants, and cosmetics Over the last century an extensive framework of the thermodynamics and kinetics of adsorption as well as the intermolecular forces that govern the physical interactions between the substrate, solute, and solvent has been established, helping elucidate the structure of adsorbates. However, there lacks an understanding of the connection between the local conformation of the adsorbed molecules and its influence on the macroscopic interfacial phenomena. In this research we have employed vibrational spectroscopy techniques namely the interface-selective non-linear sum frequency generation (SFG) and linear attenuated total reflectance Fourier transform infrared (ATR-FTIR) in conjugation with contact mechanics to develop the molecular level insights into macroscopic phenomena of wetting, adhesion, and sliding friction. We study the interfacial structure of small molecules (surfactants and solvents) as well as macromolecules adsorbed on model surfaces of sapphire (aluminum oxide) and silicone dioxide. Using SFG, we discovered a strongly coordinated ice-like water layer confined between two charged surfaces, under hydration pressures, formed by the adsorption of a cationic surfactant (cetyl trimethyl ammonium bromide, CTAB) on dissimilar hydrophobic surfaces (phenylethyl trichlorosilane, PETS self-assembled monolayer, and polydimethylsiloxane elastomer, PDMS). This strongly coordinated water structure forms past the surfactant concentration needed for a monolayer surface coverage and is observed to reduce the sliding friction. Correlating interface-selective spectroscopy with hydration forces, and their macroscopic manifestation on adhesion and friction requires us to reconsider how we understand water under confinement and its significance in more complicated interfacial processes prevalent in biology, chemistry, and engineering. To investigate the adsorption of a basic polymer (PMMA) on acidic surfaces in carbon tetrachloride (neutral), Chloroform (acidic), and acetone (basic) solvents, we used SFG and ATR-FTIR to build on to the established concept of acid-base interactions that explains limited adsorption from basic and acidic solutions compared to neutral solution due to competitive interactions. We show that besides the differences in adsorbed amount, chains adsorbed from an acidic solvent adopt a flat conformation with a much smaller ratio of segments of loops and tails to trains compared to those adsorbed from a neutral solvent. Surface interaction parameters alone cannot predict the differences in conformation of chains adsorbed from acidic or neutral solvents. Such differences in the static and dynamic conformations have consequences in understanding the exchange kinetics, colloidal stabilization, chromatographic separations, adhesion and friction, and stabilization of nanocomposites. The adsorption of polyelectrolytes driven by Coulombic interactions becomes complicated when mixed with oppositely charged surfactant which modulates the net charge and solubility of polyelectrolytes in water resulting in a characteristic bulk phase diagram. We have investigated the adsorption from pre-mixed solutions of a cationic polysaccharide (PQ10) and the anionic surfactant sodium dodecyl sulfate (SDS), on an amphoteric alumina surface using quartz crystal microbalance with dissipation (QCMD). By tuning the surface charge of the amphoteric alumina, we confirmed the importance of electrostatic interactions on the adsorption on a hydrophilic charged surface, a suggestion that was made earlier solely based on the measurements on negatively charged surfaces. We also directly correlate the bulk phase transitions at the interface adsorption by observing a maximum extent of adsorption on both negatively and positively charged surfaces from a solution corresponding to the maximum turbidity. Using the Voight based viscoelastic model, QCMD also provided information on the viscosity, shear modulus, and thickness of the adsorbed polymeric complex, findings of which were corroborated by underwater atomic force microscopy (AFM) measurements. Shifting gears from adsorption to understanding the polymer thin films surface structure in different environments, we used SFG to observe the surface restructuring of an amphiphilic glassy homopolymer poly(alpha-hydroxy-n-butyl acrylate, PHNB) from hydrophobic to aqueous environment. We observed relative changes in ordering of hydrophobic and hydroxyl pendant groups upon going from air to water at different temperatures showing their impact on wetting of the polymer surface observed by means of dynamic contact angles measurement.

Download or read book Adsorption at the Gas Solid and Liquid Solid Interface written by Kenneth Sing and published by Elsevier. This book was released on 2009-06-04 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption at the Gas-Solid and Liquid-Solid Interface

Download or read book Mechanisms of Ionic nonionic Surfactant Mixture Adsorption at Solid liquid Interfaces written by Qun Xu and published by . This book was released on 1993 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopic and Diffraction Techniques in Interfacial Electrochemistry written by C. Gutiérrez and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemistry is one of the oldest branches of Physical Chemistry. Having its foundations in the work of Faraday, Arrhenius and others, it evolved from the study of transport in electrolyte solutions to that of electrode kinetics. Kinetic methods are inherently unable to identify unequivocally the species involved in a reaction. Therefore, beginning in the 70s many spectroscopic and diffraction techniques were applied to the study of the electrode-electrolyte interface, in order to identify intermediary reaction species, and even the spatial arrangement of atoms or molecules at the interface. In order to disseminate these techniques, a NATO Advanced Sutdy Institute was held at Puerto de la Cruz, Tenerife (Canary Islands, Spain) from July 2 to 15, 1988. The Institute consisted of tutorial type lecutures, poster sessions, and round-table discussions. It was attended by over 65 participants from NATO-member countries, and others from Argentina and Japan. In the present volume most of the lectures presented at the Institute have been collected. At least one chapter is devoted to each technique. Emphasis has been made on case studies, rather than theory, which can be found in textbooks and other publications. Our purpose in this book is to help the electrochemists uninitiated in spectroscopic methods to decide which techniques would be suitable for application to their particular problems. We thank all the lecturers who contributed to this volume, and even those UHPs (Unrepentant Habitual Procrastinators) who did not in spite of our urgings to do so.

Download or read book Advanced Chemistry of Monolayers at Interfaces written by Toyoko Imae and published by Elsevier. This book was released on 2007-04-20 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Chemistry of Monolayers at Interfaces describes the advanced chemistry of monolayers at interfaces. Focusing on the recent trends of methodology and technology, which are indispensable in monolayer science. They are applied to monolayers of surfactants, amphiphiles, polymers, dendrimers, enzymes, and proteins, which serve many uses. Introduces the methodologies of scanning probe microscopy, surface force instrumentation, surface spectroscopy, surface plasmon optics, reflectometry, and near-field scanning optical microscopy. Modern interface reaction method, lithographic technology and different types of monolayers like adsorption, Langmuir and Langmuir-Blodgett monolayers at air/liquid, liquid/liquid, liquid/solid and air/solid interfaces, are all covered. Introducing novel methodologies and technologies Covering the different types of monolayers Discusses all currently available instrumental techniques for studying all types of monolayer

Download or read book The Handbook of Surface Imaging and Visualization written by Arthur T. Hubbard and published by CRC Press. This book was released on 2022-04-13 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exciting new handbook investigates the characterization of surfaces. It emphasizes experimental techniques for imaging of solid surfaces and theoretical strategies for visualization of surfaces, areas in which rapid progress is currently being made. This comprehensive, unique volume is the ideal reference for researchers needing quick access to the latest developments in the field and an excellent introduction to students who want to acquaint themselves with the behavior of electrons, atoms, molecules, and thin-films at surfaces. It's all here, under one cover! The Handbook of Surface Imaging and Visualization is filled with sixty-four of the most powerful techniques for characterization of surfaces and interfaces in the material sciences, medicine, biology, geology, chemistry, and physics. Each discussion is easy to understand, succinct, yet incredibly informative. Data illustrate present research in each area of study. A wide variety of the latest experimental and theoretical approaches are included with both practical and fundamental objectives in mind. Key references are included for the reader's convenience for locating the most recent and useful work on each topic. Readers are encouraged to contact the authors or consult the references for additional information. This is the best ready reference available today. It is a perfect source book or supplemental text on the subject.

Download or read book In Situ Adsorption Studies at the Solid Liquid Interface written by D. C. Phillips and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sum frequency generation (SFG) vibrational spectroscopy, atomic force microscopy (AFM), and quartz crystal microbalance (QCM) have been used to study the molecular surface structure, surface topography and mechanical properties, and quantitative adsorbed amount of biological molecules at the solid-liquid interface. The molecular-level behavior of designed peptides adsorbed on hydrophobic polystyrene and hydrophilic silica substrates has been examined as a model of protein adsorption on polymeric biomaterial surfaces. Proteins are such large and complex molecules that it is difficult to identify the features in their structure that lead to adsorption and interaction with solid surfaces. Designed peptides which possess secondary structure provide simple model systems for understanding protein adsorption. Depending on the amino acid sequence of a peptide, different secondary structures ({alpha}-helix and {beta}-sheet) can be induced at apolar (air/liquid or air/solid) interfaces. Having a well-defined secondary structure allows experiments to be carried out under controlled conditions, where it is possible to investigate the affects of peptide amino acid sequence and chain length, concentration, buffering effects, etc. on adsorbed peptide structure. The experiments presented in this dissertation demonstrate that SFG vibrational spectroscopy can be used to directly probe the interaction of adsorbing biomolecules with a surface or interface. The use of well designed model systems aided in isolation of the SFG signal of the adsorbing species, and showed that surface functional groups of the substrate are sensitive to surface adsorbates. The complementary techniques of AFM and QCM allowed for deconvolution of the effects of surface topography and coverage from the observed SFG spectra. Initial studies of biologically relevant surfaces are also presented: SFG spectroscopy was used to study the surface composition of common soil bacteria for use in bioremediation of nuclear waste.