Surface Charging and Points of Zero Charge

Author: Marek Kosmulski
Publisher: CRC Press
ISBN: 9781420051896
Format: PDF, ePub, Docs
Download Now
The Most Detailed Resource Available on Points of Zero Charge With their work growing in complexity, chemists involved with surface phenomena-related projects have outgrown the common resources available to them on points of zero charge (PZC) of oxides. Reporting on a limited number of materials in a limited number of scenarios, these resources often leave scientists wondering if the variances reported in the results they depend upon are due to actual differences in properties among particular samples or due to differences between isoelectric points (IEP) and points of zero charges obtained by titration. Taking on the monumental task of building a complete reference, Marek Kosmulski, a leading authority in the field of surface chemistry (Hirsch index of 22), takes a new approach to provide chemists with the most detailed resource on the points of zero charge of oxides available to date. Surface Charging and Points of Zero Charge presents PZC data on well-defined specimens of materials sorted by trademark, manufacturer (commercial materials), location (natural materials), and specific recipe (synthetic materials). The text emphasizes the comparison between particular results obtained for different portions of the same or very similar material. Synthesizing information published in research reports over the past few decades, this invaluable reference: Characterizes materials in terms of thermochemical data, chemical composition (level of impurities), crystallographic structure, specific surface area (various methods), particular size, and morphology Provides additional references to more detailed sample characterization (SEM and TEM images, XRD patterns, and particle size distributions) Reviews the PZC and IEP--with all possible details regarding the method, type of instrument, and experimental conditions Pays special attention to correlations of the PZC and IEP with other physical quantities and properties, surface charging in mixed and nonaqueous solvents, surface charging at high ionic strengths, and ion-specificity in 1-1 electrolytes All available sources were used to obtain the data in this reference making it the definitive resource on PZC/IEP. Destined to become a classic, Surface Charging and Points of Zero Charge points the way for further research with tried and true methods that help researchers avoid the doubt that can lead to countless hours of unnecessary research. Erratum for this volume can be found on the author's website.

Soil Colloids

Author: Fernando V. Molina
Publisher: CRC Press
ISBN: 1439851158
Format: PDF, ePub
Download Now
Within the field of soil science, soil chemistry encompasses the different chemical processes that take place, including mineral weathering, humification of organic plant residues, and ionic reactions involving natural and foreign metal ions that play significant roles in soil. Chemical reactions occur both in the soil solution and at the soil particle–solution interface—the latter surface reactions being vitally important in soil properties and behavior. The binding of ions to soil particles is important in defining the fate of foreign species, such as pollutants, and has a direct impact on nutrient availability. Soil Colloids: Properties and Ion Binding examines soil colloidal components and their interactions with ionic species, integrating soil science and colloid chemistry and considering the latest advances in this active research area. Part I covers the fundamentals of colloid science for readers not familiar with these principles. It discusses all the important concepts, without excessive detail such as extensive mathematical derivations. Part II deals with soil and its components, especially clay and oxide minerals and humic substances. It covers their composition and characteristics, with an emphasis on colloidal properties and ion sorption on colloids. Part III provides in-depth coverage of ion binding to soil colloids, with a focus on modeling, including recent advances. Chapters in this section describe general concepts and the issues arising from the heterogeneous nature of most natural colloids, particularly organic ones. Reviewing the state of the art in dealing with the more complex interactions, the text covers ion binding to minerals and humics, presenting different theoretical approaches, as well as ion binding to multiple components, or whole natural soils.

Nanoscience

Author: Victor M. Starov
Publisher: CRC Press
ISBN: 1420065017
Format: PDF, ePub, Mobi
Download Now
The common perception is that nanoscience is something entirely new, that it sprung forth whole and fully formed like some mythological deity. But the truth is that like all things scientific, nanoscience is the natural result of the long evolution of scientific inquiry. Following a historical trail back to the middle of the 19th century, nanoscience is the inborn property of colloid and interface science. What’s important today is for us to recognize that nanoparticles are small colloidal objects. It should also be appreciated that over the past decades, a number of novel nanostructures have been developed, but whatever we call them, we cannot forget that their properties and behavior are still in the realm of colloid and interface science. However one views it, the interest and funding in nano-science is a tremendous opportunity to advance critical research in colloid chemistry. Nanoscience: Colloidal and Interfacial Aspects brings together a prominent roster of 42 leading investigators and their teams, who detail the wide range of theoretical and experimental knowledge that can be successfully applied for investigating nanosystems, many of which are actually well-known colloidal systems. This international grouping of pioneering investigators from academia and industry use these pages to provide researchers of today and tomorrow with a full examination of nano-disperse colloids, homogeneous and heterogeneous nano-structured materials (and their properties), and shelf-organization at the nano-scale. This cutting-edge reference provides information on investigations into non-linear electrokinetic phenomena in nano-sized dispersions and nano-sized biological systems. It discusses application aspects of technological processes in great detail, providing scientists and engineers across all fields with authoritative commentary on colloid and interface science operating at the nanoscale. Nano-Science: Colloidal and Interfacial Aspects provides an authoritative resource for those wanting to familiarize themselves with current progress as well as for those looking to make their own impact on the development of new technologies and practical applications in fields as diverse as medicine, materials, and environmental science to name but a few. Whether you call the technology nano or colloids, the field continues to be ripe with opportunity.

Nuclear Magnetic Resonance Studies of Interfacial Phenomena

Author: Vladimir M. Gun'ko
Publisher: CRC Press
ISBN: 1466551690
Format: PDF
Download Now
Properties and applications of high surface area materials depend on interfacial phenomena, including diffusion, sorption, dissolution, solvation, surface reactions, catalysis, and phase transitions. Among the physicochemical methods that give useful information regarding these complex phenomena, nuclear magnetic resonance (NMR) spectroscopy is the most universal, yielding detailed structural data regarding molecules, solids, and interfaces. Nuclear Magnetic Resonance Studies of Interfacial Phenomena summarizes NMR research results collected over the past three decades for a wide range of materials—from nanomaterials and nanocomposites to biomaterials, cells, tissues, and seeds. This book describes the applications of important new NMR spectroscopic methods to a variety of useful materials and compares them with results from other techniques such as adsorption, differential scanning calorimetry, thermally stimulated depolarization current, dielectric relaxation spectroscopy, infrared spectroscopy, optical microscopy, and small-angle and wide-angle x-ray scattering. The text explores the application of NMR spectroscopy to examine interfacial phenomena in objects of increasing complexity, beginning with unmodified and modified silica materials. It then describes properties of various mixed oxides with comparisons to individual oxides and also describes carbon materials such as graphite and carbon nanotubes. Chapters deal with carbon–mineral hybrids and their mosaic surface structures, and interfacial phenomena at the surface of natural and synthetics polymers. They also explore a variety of biosystems, which are much more complex, including biomacromolecules (proteins, DNA, and lipids), cells and tissues, and seeds and herbs. The authors cover trends in interfacial phenomena investigations, and the final chapter describes NMR and other methods used in the book. This text presents a comprehensive description of a large array of hard and soft materials, allowing the analysis of the structure–property relationships and generalities on the interfacial behavior of materials and adsorbates.

Analytische Transmissionselektronenmikroskopie

Author: Jürgen Thomas
Publisher: Springer-Verlag
ISBN: 3709114403
Format: PDF, ePub, Docs
Download Now
Die Autoren des Buches fassen ihre im Zuge vielseitiger Lehrtätigkeit gesammelten Erfahrungen zu häufig gestellten Fragen und Problemen von Anfängern im Umgang mit dem analytischen Transmissionselektronenmikroskop anschaulich zusammen. Dabei bilden Erklärungen anhand einfacher Modellvorstellungen und Hinweise zur praktischen Umsetzung des Erlernten die Schwerpunkte des Buches. Dieses praxisnahe Lehrbuch bietet somit eine klare und verständliche Einführung für all jene, die für Ihre Arbeit das Transmissionselektronenmikroskop verwenden wollen, jedoch noch nicht speziell dafür ausgebildet sind.

Physikalische Chemie I Thermodynamik und Kinetik

Author: Marcus Elstner
Publisher: Springer-Verlag
ISBN: 3662553643
Format: PDF, Mobi
Download Now
Dieses Lehrbuch ist essentiell für Studierende im Bachelor-Studiengang Chemie. Es geht um "wissen", "verstehen" und "anwenden". Das Wissen um die grundlegenden Gesetze und Phänomene. Das Verstehen der Konzepte und Grundlagen. Das Anwenden der Thermodynamik, Kinetik und Elektrochemie auf chemische Fragestellungen.