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Synthesis Of Nanostructured Materials In Near And Or Supercritical Fluids

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Synthesis of Nanostructured Materials in Near and or Supercritical Fluids

Synthesis of Nanostructured Materials in Near and or Supercritical Fluids Book
Author : Can Erkey,Michael Turk
Publisher : Elsevier
Release : 2021-08-15
ISBN : 9780444640895
Language : En, Es, Fr & De

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Book Description :

Synthesis of Nanostructured Materials in Near and/or Supercritical Fluids: Methods, Fundamentals and Modeling offers a comprehensive review of the current status of research, development and insights on promising future directions, covering the synthesis of nanostructured materials using supercritical fluid-based processes. The book presents fundamental aspects such as high-pressure phase behavior of complex mixtures, thermodynamics and kinetics of adsorption from supercritical solutions, mechanisms of particle formation phenomena in supercritical fluid-based processes, and models for further development. It bridges the gap between theory and application, and is a valuable resource for scientists, researchers and students alike. Includes thermodynamic and mass transfer data necessary for industrial plant design Explains the mechanisms of reactions in a supercritical fluid environment Lists numerous industrial processes for the production of many consumer products

Supercritical Fluids and Organometallic Compounds

Supercritical Fluids and Organometallic Compounds Book
Author : Can Erkey
Publisher : Elsevier
Release : 2011
ISBN : 0080453295
Language : En, Es, Fr & De

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Book Description :

Organometallic compounds are utilized as reagents in the preparation and processing of advanced nanostructured materials, as catalysts in the production of a wide variety of specialty chemicals and polymers, and as drugs. Supercritical fluid science and technology has a wide variety of applications ranging from extraction of pharmaceutically active compounds to the synthesis of advanced materials. The combination of organometallic chemistry and supercritical fluids has significant potential. This book covers the fundamental aspects and related applications in this rapidly growing area. Covers the preparation of nanostructured composite materials using supercritical fluids Focuses on the intersection of organometallic chemistry and supercritical fluids Addresses the behavior of organometallic compounds in supercritical fluid environments

Synthesis of Nanostructured Materials by Etching in Supercritical Carbon Dioxide

Synthesis of Nanostructured Materials by Etching in Supercritical Carbon Dioxide Book
Author : Anonim
Publisher : Unknown
Release : 2009
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Supercritical CO2(scCO2) is emerging as a viable and environmentally sustainable platform for nanomaterials synthesis due to its tunable solvent properties combined with low surface tension and viscosity, which allow rapid, non-destructive wetting within small features. However, to advance the utility of this fluid, a more thorough understanding of surface chemistry at high pressures is needed. In this study, the behavior of reactive solids in scCO2was examined by etching thin dielectric, metal, and alloy films to determine the fundamental mechanisms controlling the reactions. Models were developed to describe the etching processes and to benchmark scCO2with conventional methods. Dielectric SiOxNyfilms were etched with an HF/pyridine complex dissolved in scCO2. The anhydrous etching process resulted in formation of a residual (NH4)2SiF6layer that limited transport of reactants to the film and caused a drop in reaction order. Partial removal of the salt was accomplished by sublimation under vacuum. Etching of thin CuO films with hexafluoroacetylacetone (hfacH) in scCO2was studied and found to occur via a 3-step Langmuir-Hinshelwood reaction sequence. The kinetic model showed that lower scCO2densities favored hfacH adsorption on the CuO surface and that scCO2solvation forces lowered the activation barrier for the rate-limiting step. Adding up to 10 & times the molar ratio of pure H2O to hfacH nearly doubled theetching rate through formation of a hydrogen-bonded hfacH complex. Both bulk and thin film AgCu alloys were selectively etched in scCO2to generatenanoporous Ag structures. As Cu was preferentially removed through selective oxidation and chelation, the Ag atoms conglomerated into successively larger clusters similar to mechanisms reported in aqueous phase dealloying. Supercritical dealloying was observed at Cu compositions below typical parting limits, suggesting enhanced fluid transport in the evolving pores. When using in situ oxidation, the etching reaction was limited by decomposition of H2O2. Inverse space image analysis of samples with initial phase domain sizes between 250 - 1000 nm showed that below a threshold of approximately 500 nm, the dealloyed feature size mimicked the starting microstructure. Larger phase domains prohibited surface diffusion of Ag between phases producing a mixture of large and small Ag nanostructures.

Advances in Microporous and Mesoporous Materials

Advances in Microporous and Mesoporous Materials Book
Author : Rafael Huirache Acuña
Publisher : BoD – Books on Demand
Release : 2020-07-15
ISBN : 1838807551
Language : En, Es, Fr & De

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Book Description :

Nowadays, microporous and mesoporous materials are versatile solids of great interest due to their structures and pore sizes, which allow their application in many areas. Accordingly, with IUPAC, materials with pore sizes smaller than 2 nm are called microporous and with pore sizes between 2 and 50 nm are called mesoporous. The pore size has an important impact on the material properties and affects their applications. In addition, high surface area, and their ability to incorporate functional groups on the framework are of great relevance for commercial and science applications. This book intends to provide readers with a comprehensive overview of recent improvements in the microporous and mesoporous materials field.

Supercritical Fluids and Organometallic Compounds

Supercritical Fluids and Organometallic Compounds Book
Author : Can Erkey
Publisher : Elsevier
Release : 2011-10-27
ISBN : 0080914489
Language : En, Es, Fr & De

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Book Description :

Organometallic compounds are utilized as reagents in the preparation and processing of advanced nanostructured materials, as catalysts in the production of a wide variety of specialty chemicals and polymers, and as drugs. Supercritical fluid science and technology has a wide variety of applications ranging from extraction of pharmaceutically active compounds to the synthesis of advanced materials. The combination of organometallic chemistry and supercritical fluids has significant potential. This book covers the fundamental aspects and related applications in this rapidly growing area. Covers the preparation of nanostructured composite materials using supercritical fluids Focuses on the intersection of organometallic chemistry and supercritical fluids Addresses the behavior of organometallic compounds in supercritical fluid environments

Environment Energy and Climate Change I

Environment  Energy and Climate Change I Book
Author : Elena Jiménez,Beatriz Cabañas,Gilles Lefebvre
Publisher : Springer
Release : 2015-01-16
ISBN : 3319129074
Language : En, Es, Fr & De

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Book Description :

This volume offers a comprehensive overview of advanced research in the field of environmental green chemistry for air, soil and water pollutants, and presents emerging technologies on the chemical treatment of polluted sites and wastes. The 15 chapters, prepared by internationally respected experts, address the following topics: (1) monitoring of indoor and outdoor air pollutants; (2) atmospheric degradation processes and formation mechanisms of secondary pollutants; (3) the environmental assessment and impacts of soils polluted by heavy metals and hydrocarbons; (4) sustainable and emerging technologies for the chemical treatment of organic and animal wastes and wastewaters; (5) photocatalytic CO2 conversion methods for the mitigation of greenhouse effects; and (6) non-conventional methods in green chemistry synthesis. Lastly, the authors outline the future perspectives of each topic. Given its multidisciplinary approach, combining environmental analysis and engineering, the book offers a valuable resource for all researchers and students interested in environmental chemistry and engineering.

Supercritical Fluid Technology for Energy and Environmental Applications

Supercritical Fluid Technology for Energy and Environmental Applications Book
Author : Vladimir Anikeev,Maohong Fan I
Publisher : Newnes
Release : 2013-12-21
ISBN : 0444626972
Language : En, Es, Fr & De

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Book Description :

Supercritical Fluid Technology for Energy and Environmental Applications covers the fundamental principles involved in the preparation and characterization of supercritical fluids (SCFs) used in the energy production and other environmental applications. Energy production from diversified resources — including renewable materials — using clean processes can be accomplished using technologies like SCFs. This book is focused on critical issues scientists and engineers face in applying SCFs to energy production and environmental protection, the innovative solutions they have found, and the challenges they need to overcome. The book also covers the basics of sub- and supercritical fluids, like the thermodynamics of phase and chemical equilibria, mathematical modeling, and process calculations. A supercritical fluid is any substance at a temperature and pressure above its critical point where distinct liquid and gas phases do not exist. At this state the compound demonstrates unique properties, which can be "fine-tuned," making them suitable as organic solvents in a range of industrial and laboratory processes. This volume enables readers to select the most appropriate medium for a specific situation. It helps instructors prepare course material for graduate and postgraduate courses in the area of chemistry, chemical engineering, and environmental engineering. And it helps professional engineers learn supercritical fluid-based technologies and use them in solving the increasingly challenging environmental issues. Relates theory, chemical characteristics, and properties of the particular supercritical fluid to its various applications Covers the fundamentals of supercritical fluids, like thermodynamics of phase and chemical equilibria, mathematical modeling, and process calculations Includes the most recent applications of supercritical fluids, including energy generation, materials synthesis, and environmental protection

Nanostructured Materials

Nanostructured Materials Book
Author : Jackie Ying
Publisher : Academic Press
Release : 2001-12-28
ISBN : 9780127444512
Language : En, Es, Fr & De

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Book Description :

This thematic volume of Advances in Chemical Engineering presents the latest advances in the exciting interdisciplinary field of nanostructured materials. Written by chemical engineers, chemists, physicists, materials scientists, and bioengineers, this volume focuses on the molecular engineering of materials at the nanometer scale for unique size-dependent properties. It describes a "bottom-up" approach to designing nanostructured systems for a variety of chemical, physical, and biological applications.

Advanced Nanotechnology and Application of Supercritical Fluids

Advanced Nanotechnology and Application of Supercritical Fluids Book
Author : Inamuddin,Abdullah M. Asiri
Publisher : Springer Nature
Release : 2020-07-27
ISBN : 303044984X
Language : En, Es, Fr & De

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Book Description :

Globalization and industrialization involve a number of reactions, products, extractions, and separations that require the use of organic solvents. These solvents are responsible for a number of ecological concerns, including atmospheric and land toxicity. Conventional organic solvents are regarded as volatile organic compounds; some are even limited due to their potential for ozone layer depletion. While supercritical liquids exhibit physical properties that could make them ideal substitutes for these volatile compounds, there is particular interest in the use of carbon dioxide as a solvent of crude material. In particular, carbon dioxide has apparent ‘green’ properties, like its noncombustible nature, the fact that it is generally nonpoisonous, and its relative inertness. Thus, the use of supercritical carbon dioxide can provide practical improvements to the sustainability of industrial products and processes. This book provides in-depth literature in the area of industrial green processes, focusing on the separation, purification, and extraction of compounds utilizing supercritical carbon dioxide as a green solvent.

Supercritical Fluid Nanotechnology

Supercritical Fluid Nanotechnology Book
Author : Concepcion Domingo Pascual,Pascale Subra-Paternault
Publisher : CRC Press
Release : 2015-10-22
ISBN : 981461341X
Language : En, Es, Fr & De

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Book Description :

The environmental and climate program demands technological solutions in the chemical industry that incorporate prevention of pollution. Major advances are needed to reduce the use of organic solvents, such as methanol, toluene, xylene, methyl ethyl ketone, and dichloromethane, which account for 27 percent of total toxics release inventory chemical

Dekker Encyclopedia of Nanoscience and Nanotechnology

Dekker Encyclopedia of Nanoscience and Nanotechnology Book
Author : James A. Schwarz,Cristian I. Contescu,Karol Putyera
Publisher : CRC Press
Release : 2004
ISBN : 9780824750497
Language : En, Es, Fr & De

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Book Description :

Download Dekker Encyclopedia of Nanoscience and Nanotechnology book written by James A. Schwarz,Cristian I. Contescu,Karol Putyera, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Green Sustainable Process for Chemical and Environmental Engineering and Science

Green Sustainable Process for Chemical and Environmental Engineering and Science Book
Author : Dr. Inamuddin,Abdullah M. Asiri,Arun M. Isloor
Publisher : Elsevier
Release : 2019-10-30
ISBN : 0128173890
Language : En, Es, Fr & De

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Book Description :

Green Sustainable Processes for Chemical and Environmental Engineering and Science: Supercritical Carbon Dioxide as Green Solvent provides an in-depth review on the area of green processes for the industry, focusing on the separation, purification and extraction of medicinal, biological and bioactive compounds utilizing supercritical carbon dioxide as a green solvent and their applications in pharmaceuticals, polymers, leather, paper, water filtration, textiles and more. Chapters explore polymerization, polymer composite production, polymer blending, particle production, microcellular foaming, polymer processing using supercritical carbon dioxide, and a method for the production of micro- and nano-scale particles using supercritical carbon dioxide that focuses on the pharmaceutical industry. A brief introduction and limitations to the practical use of supercritical carbon dioxide as a reaction medium are also discussed, as are the applications of supercritical carbon dioxide in the semiconductor processing industry for wafer processing and its advantages and obstacles. Reviews available green solvents for extraction, separation, purification and synthesis Outlines environmentally friendly chemical processes in many applications, i.e., organic reactions, metal recovery, etc. Includes numerous, real industrial applications, such as polymers, pharmaceuticals, leather, paper, water filtration, textiles, food, oils and fats, and more Gives detailed accounts of the application of supercritical CO2 in polymer production and processing Provides a process for extraction, seperation and purification of compounds of biological medicinal importance Gives methods for nanoparticle production using supercritical carbon dioxide Provides a systematic discussion on the solubility of organic and organometallic compounds

Organometallic Flow Chemistry

Organometallic Flow Chemistry Book
Author : Timothy Noël
Publisher : Springer
Release : 2016-04-22
ISBN : 3319332430
Language : En, Es, Fr & De

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Book Description :

The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics of pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors. All chapters from Topics in Organometallic Chemistry are published OnlineFirst with an individual DOI. In references, Topics in Organometallic Chemistry is abbreviated as Top Organomet Chem and cited as a journal

Synthesis of Nanomaterials

Synthesis of Nanomaterials Book
Author : S. Noor Mohammad
Publisher : Springer Nature
Release : 2020-11-28
ISBN : 3030575853
Language : En, Es, Fr & De

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Book Description :

This book deals with the synthesis of nanomaterials with a strong focus on the underlying reaction kinetics and various synthesis mechanisms. It gives a detailed description of all major synthesis routes of many types of novel nanomaterials including nanowires, carbon nanotubes, semiconductor nanotubes, carbon nanobelts, nanofibers, nanorings, nanodots and quantum dots. In addition, it articulates the fundamental mechanisms of nanomaterials synthesis via vapor-phase, liquid-phase and solid-phase processes, highlighting the various strengths and weaknesses of each mechanism. This monograph provides the reader with a thorough review of the known state-of-the-art, along with a detailed comparison and analysis of all possible nanomaterials synthesis mechanisms. An important element of the book is how to obtain critical knowledge for controlling the morphology of nanomaterials and thereby fine tune their materials properties. The book is an ideal guide for graduate students and researchers new to the field seeking to establish or enhance their understanding of the physical and chemical fundamentals of nanomaterials synthesis mechanisms.

Functionalized Nanomaterials

Functionalized Nanomaterials Book
Author : Vineet Kumar,Praveen Guleria,Nandita Dasgupta,Shivendu Ranjan
Publisher : CRC Press
Release : 2021-07-28
ISBN : 1000367207
Language : En, Es, Fr & De

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Book Description :

Nanomaterials contain some unique properties due to their nanometric size and surface functionalization. Nanomaterial functionalization also affects their compatibility to biocompatibility and toxicity behaviors. environment and living organism. This makes functionalized nanomaterials a material with huge scope and few challenges. This book provides detailed information about the nanomaterial functionalization and their application. Recent advancements, challenges and opportunities in the preparation and applications of functionalized nanomaterials are also highlighted. This book can serve as a reference book for scientific investigators, doctoral and post-doctoral scholars; undergrad and grad. This book is very useful for multidisciplinary researchers, industry personnel’s, journalists, and policy makers. Features: Covers all aspects of Nanomaterial functionalization and its applications Describes and methods of functionalized nanomaterials synthesis for different applications Discusses the challenges, recent findings, and cutting-edge global research trends on functionalization of nanomaterials and its applications It discusses the regulatory frameworks for the safe use of functionalized nanomaterials. It contains contributions from international experts from multiple disciplines.

Research Anthology on Synthesis Characterization and Applications of Nanomaterials

Research Anthology on Synthesis  Characterization  and Applications of Nanomaterials Book
Author : Management Association, Information Resources
Publisher : IGI Global
Release : 2021-03-19
ISBN : 1799887367
Language : En, Es, Fr & De

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Book Description :

The use of nanotechnologies continues to grow, as nanomaterials have proven their versatility and use in many different fields and industries within the scientific profession. Using nanotechnology, materials can be made lighter, more durable, more reactive, and more efficient leading nanoscale materials to enhance many everyday products and processes. With many different sizes, shapes, and internal structures, the applications are endless. These uses range from pharmaceutics to materials such as cement or cloth, electronics, environmental sustainability, and more. Therefore, there has been a recent surge of research focused on the synthesis and characterizations of these nanomaterials to better understand how they can be used, their applications, and the many different types. The Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials seeks to address not only how nanomaterials are created, used, or characterized, but also to apply this knowledge to the multidimensional industries, fields, and applications of nanomaterials and nanoscience. This includes topics such as both natural and manmade nanomaterials; the size, shape, reactivity, and other essential characteristics of nanomaterials; challenges and potential effects of using nanomaterials; and the advantages of nanomaterials with multidisciplinary uses. This book is ideally designed for researchers, engineers, practitioners, industrialists, educators, strategists, policymakers, scientists, and students working in fields that include materials engineering, engineering science, nanotechnology, biotechnology, microbiology, drug design and delivery, medicine, and more.

Functionalized Nanomaterials II

Functionalized Nanomaterials II Book
Author : Vineet Kumar,Praveen Guleria,Nandita Dasgupta,Shivendu Ranjan
Publisher : CRC Press
Release : 2021-04-12
ISBN : 1351021370
Language : En, Es, Fr & De

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Book Description :

The functionalization of nanomaterials provides them with some unique properties, making the same nanomaterial amenable for various applications by simply manipulating functional components. However, functionalized nanomaterials also face some challenges, along with some encouraging new applications in the future. This book provides a detailed account of applications of the functionalization of nanomaterials. This book can serve as a reference book for scientific investigators, including doctoral and post-doctoral scholars and undergraduate and graduate students, in context with the scope of applications of functionalized nanomaterials. It also highlights recent advances, challenges, and opportunities in the application of nanomaterials. This book will provide critical and comparative data for nanotechnologists. It may also be beneficial for multidisciplinary researchers, industry personnel, journalists, policy makers, and the common public to understand the scope of functionalized nanomaterials in detail and in depth. Features: This book covers various applications of functionalized nanomaterials. It discusses recent global research trends and future applications of functionalized nanomaterials. It highlights the need for more rigorous regulatory frameworks for the safe use of functionalized nanomaterials. It contains contributions from international experts and will be a valuable resource for researchers.

Introduction to Supercritical Fluids

Introduction to Supercritical Fluids Book
Author : Richard Smith Jr.,Hiroshi Inomata,Cor Peters
Publisher : Newnes
Release : 2013-12-08
ISBN : 0080931308
Language : En, Es, Fr & De

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Book Description :

This text provides an introduction to supercritical fluids with easy-to-use Excel spreadsheets suitable for both specialized-discipline (chemistry or chemical engineering student) and mixed-discipline (engineering/economic student) classes. Each chapter contains worked examples, tip boxes and end-of-the-chapter problems and projects. Part I covers web-based chemical information resources, applications and simplified theory presented in a way that allows students of all disciplines to delve into the properties of supercritical fluids and to design energy, extraction and materials formation systems for real-world processes that use supercritical water or supercritical carbon dioxide. Part II takes a practical approach and addresses the thermodynamic framework, equations of state, fluid phase equilibria, heat and mass transfer, chemical equilibria and reaction kinetics of supercritical fluids. Spreadsheets are arranged as Visual Basic for Applications (VBA) functions and macros that are completely (source code) accessible for students who have interest in developing their own programs. Programming is not required to solve problems or to complete projects in the text. Property worksheets/spreadsheets that are easy to use in learning environments Worked examples with Excel VBA Worksheet functions allow users to design their own processes Fluid phase equilibria and chemical equilibria worksheets allow users to change conditions, study new solutes, co-solvents, chemical systems or reactions

CRC Concise Encyclopedia of Nanotechnology

CRC Concise Encyclopedia of Nanotechnology Book
Author : Boris Ildusovich Kharisov,Oxana Vasilievna Kharissova,Ubaldo Ortiz-Mendez
Publisher : CRC Press
Release : 2016-01-06
ISBN : 1466580895
Language : En, Es, Fr & De

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Book Description :

The CRC Concise Encyclopedia of Nanotechnology sets the standard against which all other references of this nature are measured. As such, it is a major resource for both skilled professionals and novices to nanotechnology.The book examines the design, application, and utilization of devices, techniques, and technologies critical to research at the

Nanomaterials Synthesis

Nanomaterials Synthesis Book
Author : Yasir Beeran Pottathara,Sabu Thomas,Nandakumar Kalarikkal,Yves Grohens,Vanja Kokol
Publisher : Elsevier
Release : 2019-05-29
ISBN : 0128157526
Language : En, Es, Fr & De

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Book Description :

Nanomaterials Synthesis: Design, Fabrication and Applications combines the present and emerging trends of synthesis routes of nanomaterials with the incorporation of various technologies. The book covers the new trends and challenges in the synthesis and surface engineering of a wide range of nanomaterials, including emerging technologies used for their synthesis. Significant properties, safety and sustainability and environmental impacts of the synthesis routes are explored. This book is an important information source that will help materials scientists and engineers who want to learn more about how different classes of nanomaterials are designed. Highlights recent developments in, and opportunities created by, new nanomaterials synthesis methods Explains major synthesis techniques for different types of nanomaterials Discusses the challenges of using a variety of synthesis methods