Download or read book Electrochemical Atomic Force Microscopy and Spectroscopic Characterization of Amphiphilic Surfactant Molecules as Corrosion Inhibitors written by Huiru Wang and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effective management of pipeline steel corrosion is crucial for asset integrity, CAPEX/OPEX optimization, employee safety and environmental protection for the oil and gas industry. Organic inhibitors, especially of amphiphilic surfactant types, can efficiently reduce corrosion rates when added in small amounts to pipeline transmission systems. Electrochemical methods such as linear polarization resistance, electrochemical impedance spectra, and polarization curves have been adopted extensively to investigate corrosion reaction processes under inhibition, with surface analysis techniques usually playing insignificant roles and only providing elementary information without deeper analyses relating to inhibitor adsorption studies. However, the function of amphiphilic inhibitors depends on their adsorption on the metal surface. Traditional electrochemical measurements cannot usually provide direct information regarding inhibitor adsorption behavior. Therefore, a crucial knowledge gap exists in the fundamental understanding of inhibitor adsorption modes and corrosion inhibition mechanisms, due to the limited application of surface analysis techniques in corrosion inhibitor studies. Given its high resolution, a powerful surface characterization tool with multiple operation modes and good performance in aqueous solution, atomic force microscopy (AFM) has been widely used in surfactant studies for various inert substrates such asmica, graphite, and the noble metal gold. However, AFM has not often been used in with corrosion inhibitor studies involving mild steels. In the few studies AFM was used only to do straightforward surface roughness comparisons and provide some supplementary corrosion morphology evidence. In contrast to these previously reported inhibitor studies, the research reported in this dissertation will show how AFM can be used much more effectively as a main technique for improving the mechanistic understanding of the inhibition behavior of amphiphilic inhibitors adsorbed on a mild steel surface. Multiple AFM operation modes and imaging techniques were developed to systematically investigate the adsorption mechanism and corrosion inhibition mechanism of a quaternary ammonium inhibitor on a UNS G1018 steel. Finally, another two advanced high resolution surface chemistry analysis techniques, Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and X-ray Photoelectron Spectroscopy (XPS) were adopted to identify inhibitor adsorption properties as well as electrochemical reaction mechanisms, and compared with AFM findings. The findings in the present study indicate a relationship between adsorption morphology and inhibitor concentrations, as well as verified the existence of surface saturation concentration (SSC) found in electrochemical tests. The AFM findings suggest that adsorbed inhibitor molecules formed a continuous film with multiple defect areas when added above the SSC. This can provide an answer for the long standing research question as to why the inhibition efficiency does not reach 100% even when inhibitor concentration is higher than SSC, and is important in terms of developing corrosion prediction models. Meanwhile, the present work found the inhibitor adsorptionmorphology evolves from discontinuous aggregates, then non-uniform film with large defects, finally to a uniform film with defects when the bulk inhibitor concentration varies from low to high. The corresponding corrosion morphology evolves from uniform corrosion at a high rate, patchy corrosion, and full protection respectively, as demonstrated by electrochemical atomic force microscopy (EC-AFM). This AFM finding can be used to connect the inhibitor adsorption isotherm (surface coverage versus inhibitor concentration) with the actual surface corrosion processes, and builds a bridge between adsorption and corrosion studies. Furthermore, the present AFM work suggests that the mild steel microstructures could influence inhibitor adsorption, specifically how inhibitor is adsorbed on cementite structure that could be more easily removed by flow, than on ferrite structures. This is significant as inhibition efficiency often decreases as the carbon content of the steel increases. Finally, the ToF-SIMS and XPS work verified the relationship between adsorption, corrosion and inhibitor concentration elucidated by AFM, and further determined the inhibitor adsorption types and surface layer structures based on the composition analysis from top surface to steel substrate depth. By these findings, a fundamental understanding of the relationship between inhibitor chemical structure, molecular orientations during adsorption, and corrosion inhibition efficiency at various inhibitor concentrations and immersion times has been built, which ca be of great significance for choosing proper inhibitors for specific environments or even design of new inhibitors. Moreover, a surface analysis methodology for studying the interface between amphiphilic inhibitors and mild steel is developed on the basis of the AFM technique. This AFM methodology has beencombined with surface chemistry analysis, molecular simulation, and electrochemistry to provide comprehensive information regarding corrosion inhibition mechanisms

Download or read book Nanopharmaceuticals Principles and Applications Vol 3 written by Vinod Kumar Yata and published by Springer Nature. This book was released on 2020-08-19 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the third volume on this subject and focuses on the recent advances of nanopharmaceuticals in cancer, dental, dermal and drug delivery applications and presents their safety, toxicity and therapeutic efficacy. The book also includes the transport phenomenon of nanomaterials and important pathways for drug delivery applications. It goes on to explain the toxicity of nanoparticles to different physiological systems and methods used to assess this for different organ systems using examples of in vivo systems.

Download or read book Active Protective Coatings written by Anthony E. Hughes and published by Springer. This book was released on 2016-03-01 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a broad range of materials science that has been brought to bear on providing solutions to the challenges of developing self-healing and protective coatings for a range of metals. The book has a strong emphasis on characterisation techniques, particularly new techniques that are beginning to be used in the coatings area. It features many contributions written by experts from various industrial sectors which examine the needs of the sectors and the state of the art. The development of self-healing and protective coatings has been an expanding field in recent years and applies a lot of new knowledge gained from other fields as well as other areas of materials science to the development of coatings. It has borrowed from fields such as the food and pharmaceutical industries who have used, polymer techniques, sol-gel science and colloidosome technology for a range encapsulation techniques. It has also borrowed from fields like hydrogen storage such as from the development of hierarchical and other materials based on organic templating as “nanocontainers” for the delivery of inhibitors. In materials science, recent developments in high throughput and other characterisation techniques, such as those available from synchrotrons, are being increasing used for novel characterisation – one only needs to look at the application of these techniques in self healing polymers to gauge wealth of new information that has been gained from these techniques. This work is largely driven by the need to replace environmental pollutants and hazardous chemicals that represent risk to humans such as chromate inhibitors which are still used in some applications.

Download or read book Gemini Surfactants written by Raoul Zana and published by CRC Press. This book was released on 2003-10-07 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generating much interest in both academic and scientific circles, Gemini Surfactants gathers the most up-to-date research in gemini surfactantproduction and demonstrates how their propertiesand performance can revolutionize the current industrial application of these surfactants. It surveys the state of special gemini surfactants, including nonionic, zwitterionic, fluorinated, and amino-acid-based surfactants. Gemini Surfactants considers the synthesis, phase behavior, and rheology of gemini and related surfactants and clarifies the adsorption and surface tension behavior of gemini surfactants at air–water, oil–water, and solid–water interfaces. The book also details the physicochemical properties and microstructure of aqueous micellar solutions of gemini surfactants and describes mixed micellization between gemini surfactants and conventional surfactants.

Download or read book Handbook of Corrosion Engineering written by Pierre Roberge and published by McGraw-Hill Prof Med/Tech. This book was released on 1999-09-30 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduce the enormous economic and environmental impact of corrosion Emphasizing quantitative techniques, this guide provides you with: *Theory essential for understanding aqueous, atmospheric, and high temperature corrosion processes Corrosion resistance data for various materials Management techniques for dealing with corrosion control, including life prediction and cost analysis, information systems, and knowledge re-use Techniques for the detection, analysis, and prevention of corrosion damage, including protective coatings and cathodic protection More

Download or read book Metallosurfactants written by Surinder K. Mehta and published by John Wiley & Sons. This book was released on 2022-05-31 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallosurfactants Provides up-to-date coverage of the synthesis, properties, and applications of metallosurfactants Metallosurfactants: From Fundamentals to Catalytic and Biomedical Applications is a thorough introduction to amphiphilic compounds that allow to incorporate metal ions in the surfactant system. This comprehensive reference and guide describes the fundamentals of metal surfactant complexes, highlights recent advances in the field, and explores current and future applications and research areas. Gradually progressing from basic to advanced topics, the authors first explain the classification and characterization of metallosurfactants before delving into more complex concepts and various catalytic, sensing, and biomedical applications. The book begins with coverage of the synthesis of metallosurfactants and their surface, interfacial, and aggregation behavior. Subsequent chapters discuss applications of metallosurfactants in areas such as drug delivery, molecular machines, transfection, nanoparticle synthesis, and carbon monoxide-releasing molecules (CORMs). Other topics include the use of metallosurfactants as catalysts in organic reactions, and as anticancer and antimicrobial agents in drug delivery and formulation. This unique reference Provides an overview of the structure-function relationship, synthesis methods, and characterization of metallosurfactants Reviews current trends in metallosurfactant development and research Examines the use of metallosurfactants in a wide range of reactions, including esterolytic reactions and hydrogen generation Discusses advanced applications of metallosurfactants, e.g. as nanoreactors for nanoparticle synthesis, non-viral transfection vectors, and sensors Metallosurfactants: From Fundamentals to Catalytic and Biomedical Applications is an excellent introduction to the growing field of metallosurfactant chemistry as well as a concise, highly useful reference for researchers and scientists in both academia and industry.

Download or read book Physics and Chemistry of Interfaces written by Hans-Jürgen Butt and published by John Wiley & Sons. This book was released on 2023-02-07 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics and Chemistry of Interfaces Comprehensive textbook on the interdisciplinary field of interface science, fully updated with new content on wetting, spectroscopy, and coatings Physics and Chemistry of Interfaces provides a comprehensive introduction to the field of surface and interface science, focusing on essential concepts rather than specific details, and on intuitive understanding rather than convoluted math. Numerous high-end applications from surface technology, biotechnology, and microelectronics are included to illustrate and help readers easily comprehend basic concepts. The new edition contains an increased number of problems with detailed, worked solutions, making it ideal as a self-study resource. In topic coverage, the highly qualified authors take a balanced approach, discussing advanced interface phenomena in detail while remaining comprehensible. Chapter summaries with the most important equations, facts, and phenomena are included to aid the reader in information retention. A few of the sample topics included in Physics and Chemistry of Interfaces are as follows: Liquid surfaces, covering microscopic picture of a liquid surface, surface tension, the equation of Young and Laplace, and curved liquid surfaces Thermodynamics of interfaces, covering surface excess, internal energy and Helmholtz energy, equilibrium conditions, and interfacial excess energies Charged interfaces and the electric double layer, covering planar surfaces, the Grahame equation, and limitations of the Poisson-Boltzmann theory Surface forces, covering Van der Waals forces between molecules, macroscopic calculations, the Derjaguin approximation, and disjoining pressure Physics and Chemistry of Interfaces is a complete reference on the subject, aimed at advanced students (and their instructors) in physics, material science, chemistry, and engineering. Researchers requiring background knowledge on surface and interface science will also benefit from the accessible yet in-depth coverage of the text.

Download or read book Heterocyclic Organic Corrosion Inhibitors written by Mumtaz A. Quraishi and published by Elsevier. This book was released on 2020-03-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterocyclic Organic Corrosion Inhibitors: Principles and Applications aims to comprehend the synthesis and application of organic heterocyclic compounds as corrosion inhibitors in various corrosive environments. Considering the high importance of corrosion inhibitor development for different industries, the book provides the fundamentals and most recent advancements in this field. The book is an indispensable reference tool for industrialists and academicians working in the field of corrosion protection. Provides a systematic overview of fundamentals and current advancements Acts as a primary reference for beginner researchers in this arena Presents a handy reference tool to different chemical industries Covers fundamentals, industrial applications and most recent advancements in this area

Download or read book Surfactant Science and Technology written by Drew Myers and published by John Wiley & Sons. This book was released on 2020-08-04 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: A solid introduction to the field of surfactant science, this new edition provides updated information about surfactant uses, structures, and preparation, as well as seven new chapters expanding on technology applications. Offers a comprehensive introduction and reference of the science and technology of surface active materials Elaborates, more fully than prior editions, aspects of surfactant crystal structure as well as their effects on applications Adds more information on new classes and applications of natural surfactants in light of environmental consequences of surfactant use

Download or read book Combinatorial Methods for Chemical and Biological Sensors written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2009-03-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled “Computational Methods for Sensor Material Selection”.

Download or read book Supramolecular Amphiphiles written by Xi Zhang and published by Royal Society of Chemistry. This book was released on 2017-06-15 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: An amphiphile is a molecule that contains a hydrophilic part and a hydrophobic part, linked by covalent bonding. Supramolecular amphiphiles (supra-amphiphiles) are amphiphiles linked by non-covalent interactions. As they employ non-covalent interactions, these species demonstrate adaptability and reversibility in conformational transformation, making them one of the most important emerging species in supramolecular chemistry. They have proven important in bridging the gap between molecular architecture and functional assembly. This book is written and edited by the current leaders in the topic and contains a foreword from Professor Jean-Marie Lehn, a father of the supramolecular chemistry field. Bringing together supramolecular chemistry and colloidal and interfacial science, the book provides a detailed and systematic introduction to supramolecular amphiphiles. Chapters explain how to employ non-covalent interactions to fabricate supra-amphiphiles. The book opens with an introduction to the history and development of the field, followed by chapters focussing on each type of interaction, including host-guest interaction, electrostatic interaction, charge-transfer interaction, hydrogen bonding and dynamic covalent bonds. This book will be a valuable resource for students new to this field and experienced researchers wanting to explore the wider context of their work.

Download or read book Sustainable Corrosion Inhibitors written by Inamuddin and published by Materials Research Forum LLC. This book was released on 2021-08-05 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the current status of corrosion inhibitor technology. A special focus is placed on various types of green corrosion inhibitors and their applications. Keywords: Green Corrosion Inhibitors, Sustainable Corrosion Inhibitors, Green Organic Inhibitors, Inhibitors from Biomass and Natural Sources, Polysaccharide, Applications for Concrete, Coatings, Copper and Copper Alloys, Corrosion Control in Conventional and Monolithic Metals.

Download or read book Metal Nanoparticles in Microbiology written by Mahendra Rai and published by Springer Science & Business Media. This book was released on 2011-04-02 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following an introduction to biogenic metal nanoparticles, this book presents how they can be biosynthesized using bacteria, fungi and yeast, as well as their potential applications in biomedicine. It is shown that the synthesis of nanoparticles using microbes is eco-friendly and results in reproducible metal nanoparticles of well-defined sizes, shapes and structures. This biotechnological approach based on the process of biomineralization exploits the effectiveness and flexibility of biological systems. Chapters include practical protocols for microbial synthesis of nanoparticles and microbial screening methods for isolating a specific nanoparticle producer as well as reviews on process optimization, industrial scale production, biomolecule-nanoparticle interactions, magnetosomes, silver nanoparticles and their numerous applications in medicine, and the application of gold nanoparticles in developing sensitive biosensors.

Download or read book Core Concepts in Supramolecular Chemistry and Nanochemistry written by Jonathan W. Steed and published by John Wiley & Sons. This book was released on 2007-04-30 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supramolecular chemistry and nanochemistry are two strongly interrelated cutting edge frontiers in research in the chemical sciences. The results of recent work in the area are now an increasing part of modern degree courses and hugely important to researchers. Core Concepts in Supramolecular Chemistry and Nanochemistry clearly outlines the fundamentals that underlie supramolecular chemistry and nanochemistry and takes an umbrella view of the whole area. This concise textbook traces the fascinating modern practice of the chemistry of the non-covalent bond from its fundamental origins through to it expression in the emergence of nanochemistry. Fusing synthetic materials and supramolecular chemistry with crystal engineering and the emerging principles of nanotechnology, the book is an ideal introduction to current chemical thought for researchers and a superb resource for students entering these exciting areas for the first time. The book builds from first principles rather than adopting a review style and includes key references to guide the reader through influential work. supplementary website featuring powerpoint slides of the figures in the book further references in each chapter builds from first principles rather than adopting a review style includes chapter on nanochemistry clear diagrams to highlight basic principles

Download or read book Carbon Based Material for Environmental Protection and Remediation written by Mattia Bartoli and published by BoD – Books on Demand. This book was released on 2020-08-19 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-Based Material for Environmental Protection and Remediation presents an overview of carbon-based technologies and processes, and examines their usefulness and efficiency for environmental preservation and remediation. Chapters cover topics ranging from pollutants removal to new processes in materials science. Written for interested readers with strong scientific and technological backgrounds, this book will appeal to scientific advisors at private companies, academics, and graduate students.

Download or read book Polymeric and Self Assembled Hydrogels written by Xian Jun Loh and published by Royal Society of Chemistry. This book was released on 2013 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only book to give a complete picture of current hydrogel research, covering all the major applications as well as the fundamental principles behind them.

Download or read book Biomimetic Polymers written by C.G. Gebelein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term biomimetic is comparatively new on the chemical scene, but the concept has been utilized by chemists for many years. Furthermore, the basic idea of making a synthetic material that can imitate the func tions of natural materials probably could be traced back into antiquity. From the dawn of creation, people have probably attempted to duplicate or modify the activities of the natural world. (One can even find allusions to these attempts in the Bible; e. g. , Genesis 30. ) The term "mimetic" means to imitate or mimic. The word "mimic" means to copy closely, or to imitate accurately. Biomimetic, which has not yet entered most dictionaries, means to imitate or mimic some specific bio logical function. Usually, the objective of biomimetics is to form some useful material without the need of utilizing living systems. In a simi lar manner, the term biomimetic polymers means creating synthetic poly mers which imitate the activity of natural bioactive polymers. This is a major advance in polymer chemistry because the natural bioactive polymers are the basis of life itself. Thus, biomimetic polymers imitate the life process in many ways. This present volume delineates some of the recent progress being made in this vast field of biomimetic polymers. Chemists have been making biomimetic polymers for more than fifty years, although this term wasn't used in the early investigations.