Download or read book The Adsorption of Nanoparticles at the Solid liquid Interface written by Dan Xu and published by . This book was released on 2010 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study aims to investigate the adsorption of nanoparticles at the solid-water interface. Surface treatments with nanoparticles have been increasingly explored for a broad range of potential applications. However, the adsorption behaviour of inorganic nanoparticles has not been well studied to-date. Nanoparticle adsorption can be affected by several factors, such as the type of solid substrate, nanoparticle shape, nanoparticle concentration and salt concentration in the nanoparticle suspension, Two types of nanoparticles are used in this thesis: spherical Ludox silica (20 nm) and disk-like laponite clay (25 nm across, 1 nm thick). The adsorption of Laponite nanoparticles at the solid-water interface on various substrates and over a range of Laponite concentrations has been investigated using a quartz crystal microbalance (QCM) and an optical reflectometer (OR). Adsorption of laponite was only observed on a positively charged poly(diallyldimethylammonium chloride) (PDADMAC) surface, whereas no adsorption was seen on hydrophilic/hydrophobic, negative or neutrally charged surfaces. This shows that when fully wetted, Laponite adsorption depends primarily on the surface charge. The adsorption of both Laponite and Ludox silica onto PDADMAC coated surfaces over the first few seconds were studied by OR. The initial adsorption rate of Laponite was faster than Ludox, possibly due to reorientation of the laponite nanoparticles as they approach the substrate. Over longer times, the QCM data for Ludox III nanopartic1es demonstrated more complex adsorption behaviour than Laponite, demonstrating intermixing processes taking place within the PDADMAC-Ludox layer. The effect of a monovalent salt (NaCI) on the adsorption behaviour of both PDADMAC and Ludox nanopartic1es was also investigated using QCM. These data suggest that the adsorbed amount of Ludox increase with NaCI concentration. This can be explained by the roughening of the PDADMAC surface at high salt concentrations leading to more Ludox nanopartic1es adsorbing per unit area. Preliminary evidence for less intermixing between the PDADMAC and the Ludox when the PDADMAC layer was adsorbed and then pre-dried was also found.

Download or read book Study of Adsorption of Biological and Nanoparticle Solutions at the Solid liquid Interface written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With advances in micromechanical machining and nanotechnology, the sample volume needed for biological research and other analysis decreases. With small volume, sample-surface interactions including adsorption must be considered. These adsorption effects can be observed by analyzing light reflected from the solid-liquid interface, and the contact angle of a solution on the surface. Presented is the design and construction of an ellipsometer, a device used to analyze light reflected off of a solid-liquid interface to find interfacial properties, including thickness of a thin film formed by adsorption. The taq enzyme is shown to have a large change in contact angle from seventy degrees to about ten degrees over a short (ten minute) time period when placed on an SU-8 substrate, indicating a change in energy at the interface and a large amount of adsorption. Silane substrates are found to produce similar results. Ellipticity of a colloidal gold nanoparticle solution on a glass substrate is also observed, whose results are difficult to interpret due to bulk shifts in the sample. With the ellipsometer running correctly, it can be used for a number of experiments, including spectroscopic ellipsometry and Brewster angle microscopy, with some modifications.

Download or read book Adsorption of Inorganics at Solid liquid Interfaces written by Marc A. Anderson and published by Ann Arbor Science Publishers. This book was released on 1981 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Colloidal Particles at Liquid Interfaces written by Bernard P. Binks and published by Cambridge University Press. This book was released on 2006-08-17 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of how small solid particles operate at liquid interfaces is minimal. This book brings together the topics actively being investigated, with contributions from experts in the field. It will be of interest to researchers in chemistry, physics, chemical engineering, pharmacy, food science and materials science.

Download or read book Adsorption from Solution at the Solid liquid Interface written by G. D. Parfitt and published by . This book was released on 1983 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-electrolytes. Adsorption of small molecules. Adsorption from mixtures of miscible liquids. Adsorption of nonionic surfactants. Adsorption of polymers. Electrolytes. Adsorption of small ions. Adsorption of ionic surfactants. Adsorption of dyes. Adsorption of polyelectrolytes from dilute solution.

Download or read book Adsorption From Solution written by R. H. Ottewill and published by Elsevier. This book was released on 2012-12-02 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption From Solution discusses the significance of adsorption behavior in thermodynamic terms, with emphasis on the interplay between enthalpic and entropic contributions to the free energy. This book examines the role of simple models and of elementary thermodynamic and statistical mechanical arguments in relation to the concept of surface phase. Organized into 22 chapters, this book starts with an overview of the theoretical model for the solid/liquid interface. This text then proceeds with a discussion of the general thermodynamic treatment of adsorption from mixed solvents, which is designed to apply in situations where adsorbed species may be regarded as distinct from their bulk counterparts. Other chapters discuss the adsorption from solutions of various interfaces of liquid/gas, liquid/liquid, or liquid/solid. The final chapter deals with the roles of adsorption from solution in controlling other phenomena, such as liquid–liquid displacement, wetting, and the forces between colloidal particles. Physicists, chemists, and materials scientists will find this book extremely useful.

Download or read book Particles at Interfaces written by Zbigniew Adamczyk and published by Elsevier. This book was released on 2017-10-27 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particles and Interfaces: Interaction, Deposition, Structure, Volume 20, Second Edition unifies particle and protein adsorption phenomena by presenting recent developments in this growing field of nanoscience. While experimental data is available in vast quantities, there is a deficit in quality interpretation of that data. This title provides such information, emphasizing the basic physics behind practical problems, thus empowering the reader to estimate relevant effects. The book includes solved problems of particle transport under non-linear conditions and their relevance to predicting protein adsorption, including an entirely new chapter devoted to polyelectrolyte and protein adsorption at solid/liquid and solid/gas interfaces. - Unifies information from various fields, such as electrostatics, hydrodynamic, colloid science and biophysics - Presents information in a user-friendly manner, including computer aided graphics and schematic drawings - Applies a phenomenological approach to the content and provides readily accessible reference data

Download or read book Surfactant Adsorption and Surface Solubilization written by Ravi Sharma and published by . This book was released on 1995 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents recent progress in the understanding of competitive adsorption. Describes adsolubilization and adsorption at the solid-liquid interface. Discusses kinetics of adsorption at liquid-liquid interfaces. Examines the structure of adsorbed layers.

Download or read book Adsorption and Nanostructures written by Imre Dekany and published by Springer. This book was released on 2013-10-03 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption at solid/liquid interfaces Ulbig P, Seippel J: Development of a group contribution method for liquid-phase adsorption onto activated carbons ..................... Laszlb K: Adsorption from aqueous phenol and 2,3,4-trichlorophenol solutions on nanoporous carbon prepared from poly(ethy1ene terephthalate) . . Mizukami M, Kurihara K: Alcohol cluster formation on silica surfaces in cyclohexane . . Tombacz E, Szekeres M: Effects of impurity and solid-phase dissolution on surface charge titration of aluminium oxide ............................... Horanyi G, Job P: Radiotracer study of the specific adsorption of anions on oxides Kovaeevit D, cop A, Bradetic A, Interfacial equilibria at a goethite aqueous interface in the presence Kallay N, Pohlmeier A, of amino acids ......................................... Narres H-D, Lewandowski H: Ruffmann B, Zimehl R: Liquid sorption and stability of polystyrene latices ........... Zimehl R, Hannig M: Adsorption onto tooth enamel the - biological interface and its modification ........................................... Lengyel Z, Foldinyi R: Adsorption of chloroacetanilide herbicides on Hungarian soils ..... Paszli I, Laszlo K: Stagnation phenomenon of solid/fluid interfaces ................ Mielke M, Zimehl R: Measures to determine the hydrophobicity of colloidal polymers . Farkas A, Dekany I: Interlamellar adsorption of organic pollutants on hydrophobic . . vermiculite ............................................ Dabrowski A, Biilow M, Adsorption against pollution: current state and perspectives ....... Podkocielny P: Textor T, Bahners T, Schollmeyer E: Organically modified ceramics for coating textile materials ........ Nanostructured materials Esumi K, Torigoe K: Preparation and characterization of noble metal nanoparticles using ........................... dendrimers as protective colloids Mogyorbsi K, Nemeth J, Dekany I, Preparation, characterization, and photocatalytic properties Fendler JH: of layered-silicate-supported TiOz and ZnO nanoparticles ........

Download or read book 2 D Proteome Analysis Protocols written by Andrew J. Link and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the completion of sequencing projects and the advancement of a- lytical tools for protein identification, proteomics—the study of the expressed part of the genome—has become a major region of the burgeoning field of functional genomics. High-resolution 2-D gels can reveal virtually all p- teins present in a cell or tissue at any given time, including posttranslationally modified proteins. Changes in the expression and structure of most cellular proteins caused by differentiation or external stimuli can be displayed and eventually identified using 2-D protein gels. 2-D Proteome Analysis Protocols covers all aspects of the use of 2-D protein electrophoresis for the analysis of biological problems. The contri- tors include many of the leaders in the fields of biochemistry and analytical chemistry who were instrumental in the development of high-resolution 2-D gels, immobilized pH gradients, computer analysis, and mass spectromet- based protein identification methodologies. This book is intended as a benchtop manual and guide both for novices to 2-D gels and for those aficionados who wish to try the newer techniques. Any group using protein biochemistry—especially in the fields of molecular biology, biochemistry, microbiology, and cell biology—should find this book eminently useful. 2-D Proteome Analysis Protocols takes the researcher through the c- plete process of working with 2-D protein gels from making the protein - tract to finally identifying the proteins of interest. It includes protocols for generating 2-D protein extracts from most of the standard model organisms, including bacteria, yeast, nematode, Drosophila, plants, mouse, and human.

Download or read book Colloid and Interface Chemistry for Nanotechnology written by Peter Kralchevsky and published by CRC Press. This book was released on 2016-04-19 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloid and interface science dealt with nanoscale objects for nearly a century before the term nanotechnology was coined. An interdisciplinary field, it bridges the macroscopic world and the small world of atoms and molecules. Colloid and Interface Chemistry for Nanotechnology is a collection of manuscripts reflecting the activities of research te

Download or read book Metal Oxide Nanoparticles written by Oliver Diwald and published by John Wiley & Sons. This book was released on 2021-09-10 with total page 903 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ein umfassendes Referenzwerk für Chemiker und Industriefachleute zum Thema Nanopartikel Nanopartikel aus Metalloxid sind ein wesentlicher Bestandteil zahlreicher natürlicher und technologischer Prozesse ? von der Mineralumwandlung bis zur Elektronik. Darüber hinaus kommen Metalloxid-Nanopartikel in Pulverform im Maschinenbau, in der Elektronik und der Energietechnik zum Einsatz. Das Werk Metal Oxide Nanoparticles: Formation, Functional Properties and Interfaces stellt die wichtigsten Synthese- und Formulierungsansätze bei der Nutzung von Metalloxid-Nanopartikeln als Funktionsmaterialien vor. Es werden die üblichen Verarbeitungswege erklärt und die physikalischen und chemischen Eigenschaften der Partikel mithilfe von umfassenden und ergänzenden Charakterisierungsmethoden bewertet. Dieses Werk kann als Einführung in die Formulierung von Nanopartikeln, ihre Grenzflächenchemie und ihre funktionellen Eigenschaften im Nanobereich genutzt werden. Darüber hinaus dient es zum vertiefenden Verständnis, denn das Buch enthält detaillierte Angaben zu fortschrittlichen Methoden bei der physikalischen, chemischen, Oberflächen- und Grenzflächencharakterisierung von Metalloxid-Nanopartikeln in Pulvern und Dispersionen. *Erläuterung der Anwendung von Metalloxid-Nanopartikeln und der wirtschaftlichen Auswirkungen *Betrachtung der Partikelsynthese, einschließlich der Grundsätze ausgewählter Bottom-up-Strategien *Untersuchung der Formulierung von Nanopartikeln mit einer Auswahl von Verarbeitungs- und Anwendungswegen *Diskussion der Bedeutung von Partikeloberflächen und -grenzflächen für Strukturbildung, Stabilität und funktionelle Materialeigenschaften *Betrachtung der Charakterisierung von Metalloxid-Nanopartikeln auf verschiedenen Längenskalen In diesem Buch finden Forscher im akademischen Bereich, Chemiker in der Industrie und Doktoranden wichtige Erkenntnisse über die Synthese, Eigenschaften und Anwendungen von Metalloxid-Nanopartikeln.

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 Surfaces of Nanoparticles and Porous Materials written by James A. Schwarz and published by CRC Press. This book was released on 1999-01-21 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This innovative reference collects state-of-the-art procedures for the construction and design of nanoparticles and porous material while suggesting appropriate areas of application. Presenting both synthesis and characterization protocols, Surfaces of Nanoparticles and Porous Materials contains over 3000 references, tables, equations, drawings, and photographs. It examines the thermodynamics and kinetics of adsorption involving organic and inorganic liquids, solids, and gaseous media.. Topics include characterization, transport processes, diffusion, and the adsorption of heavy metals, ions, proteins, and pharmaceutical organics.

Download or read book Adsorption of Particles on Fluid liquid Interfaces written by Bhavin Dalal and published by . This book was released on 2012 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particles floating on fluid-liquid interfaces are of considerable interest because of their importance in a range of physical applications and biological processes, e.g., self-- assembly of particles at fluid-fluid interfaces resulting in novel nano structured materials, stabilization of emulsions, formation of pollen and insect egg rafts, etc. The aim of this dissertation is to explore the mechanism by which particles are adsorbed at fluid-liquid interfaces. It is shown that the inertia of a particle plays an important role in its motion in the direction normal to a fluid-liquid interface, and in determining the particles adsorption trajectory and orientation in the adsorbed state. Although the importance of inertia diminishes with decreasing particle size, on an air-water interface the inertia continues to be important even when the particle size is as small as a few nanometers. This dissertation also investigates the vertical oscillations of a particle while it is being adsorbed on an interface. The fact that the particle oscillates vertically implies that its behavior is similar to that of an under-damped mass-spring-dashpot system, and that it has characteristic linear and rotational frequencies which depend on the physical properties of the fluids involved and those of the particle. The experimentally measured frequency of oscillation of a particle is in approximate agreement with the frequency calculated analytically, which is noteworthy considering that the latter depends only on the fluid and particle properties, and that there are no adjustable parameters in the analytic expression. It is shown that similarly to an under-damped system, these characteristic frequencies can be excited by an external forcing. When a particle is adsorbed on a fluid-liquid interface it induces a relatively strong transient flow in the liquid which persists for several seconds. For a spherical particle the flow is axisymmetric about the vertical passing through the particle's center. To visualize this flow, an experiment is designed based of the Particle Image Velocimetry (PIV) technique. The measurements show that the fluid directly below the particle rises up, and near the interface it moves away from the particle. The velocity near the interface is found to be about an order of magnitude larger than in the liquid below the particle.

Download or read book Adsorption at the Solid liquid Interface written by D. C. McDermott and published by . This book was released on 1993 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Studies on the Adsorption of Two Surfactants at Solid liquid Interface written by Camille Gutig and published by . This book was released on 2007 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: