Download or read book Carbon Nanomaterials for Gas Adsorption written by Maria Letizia Terranova and published by CRC Press. This book was released on 2012-11-27 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in adsorption of gases by carbon nanomaterials has experienced considerable growth in recent years, with increasing interest for practical applications. Many research groups are now producing or using such materials for gas adsorption, storage, purification, and sensing. This book provides a selected overview of some of the most interesting scientific results regarding the outstanding properties of carbon nanomaterials for gas adsorption and of interest both for basic research and technological applications. Topics receiving special attention in this book include storage of H, purification of H, storage of rare gases, adsorption of organic vapors, gas trapping and separation, and metrology of gas adsorption.
Download or read book Carbon Nanomaterials as Adsorbents for Environmental and Biological Applications written by Carlos P. Bergmann and published by Springer. This book was released on 2015-06-01 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a summary of the current use of carbon nanomaterials for water treatment, drug delivery, systems and nanosensors. The first chapter elucidates the adsorption process phenomenon. Also, the properties of different carbon nanomaterials for adsorption applications are covered. The third chapter presents the kinetic and equilibrium models of adsorption, processing of experimental data and adsorption process peculiarities. Environmental and biological applications of carbon nanomaterials are listed in the last chapter. This book is written from an application-oriented perspective and is useful for all those interested in nanoadsorbents.
Download or read book Gas Adsorption on Suspended Carbon Nanotubes and Graphene written by Boris Dzyubenko and published by Boris Dzyubenko. This book was released on 2017-08-18 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare gas adsorption was studied on suspended individual single walled carbon nanotubes and graphene. The devices were fabricated as field effect transistors. Adsorption of N2 and CO, which formed a Root 3 X Root 3 commensurate solid monolayer, produced a dramatic reduction of the two-terminal conductance of graphene by as much as a factor of three. This effect is possibly connected with the opening of a band gap expected to occur in such structures.
Download or read book Gas Adsorption on Suspended Carbon Nanotubes and Graphene written by Boris Dzyubenko and published by . This book was released on 2017 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare gas adsorption was studied on suspended individual single walled carbon nanotubes and graphene. The devices were fabricated as field effect transistors. Adsorption on graphene was studied through two-terminal conductance. On nanotube devices adsorption was studied through conductance while the coverage (density) of the adsorbates was determined from the mechanical resonance frequency shifts. The adsorbed atoms modified the conductance of the nanotube field effect transistors, in part through charge transfer from the adsorbates to the nanotube. By tracking the shifts of conductance as a function of gate voltage, G=G(Vg), and comparing these shifts with the periodicity of the Coulomb blockade oscillations we quantified the charge transfer to the nanotubes with high accuracy. For all studied gases (He, Ar, Kr, Xe, N2, CO, and O2) the charge transfer had a similar magnitude and was rather small, on the order of 10^-5 to 10^-3 electrons per adsorbed atom. The nanotube devices displayed two classes of adsorption behavior. On some devices the monolayers exhibited first-order phase transitions analogous to those that occur in adsorbed monolayers on graphite. On other devices phase transitions within the adsorbed monolayers were absent. We present evidence that a highly uniform layer of contaminants deposits on the surface of suspended nanotube devices either upon cooldown in the cryostat or at room temperature from air. These contaminants modify the adsorption behavior preventing the adsorbed monolayers from exhibiting the first order phase transitions expected to occur on a clean surface. A similar type of contamination leading to virtually identical effects occurs on suspended graphene. In the low coverage regions of isotherms on nanotubes we observe Henry's law behavior, demonstrating a high uniformity of the surface and allowing us to accurately determine the single particle binding energy to this surface. The determined binding energies were 776+-10 K for Ar, and 997+-37 K for Kr. In the second part of the dissertation we present the first measurements of adsorption on a pristine graphene surface, exposed through aggressive electric current annealing. On graphene the rare gas adsorbates form monolayers with phases analogous to those on graphite, but with phase transitions occurring at slightly higher pressures due to a reduction of binding energy. The condensations of monolayers with phases not commensurate with the graphene lattice resulted in a slight shift of the charge neutrality point of monolayer graphene corresponding to a change of carrier concentration on the order of 10^9 e/cm^2. Adsorption of N2 and CO, which formed a Root 3 X Root 3 commensurate solid monolayer, produced a dramatic reduction of the two-terminal conductance of graphene by as much as a factor of three. This effect is possibly connected with the opening of a band gap expected to occur in such structures. We observe hysteretic behavior in the adsorbed Root 3 X Root 3 commensurate monolayers on freestanding graphene, which is likely due to the interaction of two adsorbed monolayers on opposite surfaces of the graphene sheet.
Download or read book Nanoporous Materials for Gas Storage written by Katsumi Kaneko and published by Springer. This book was released on 2019-04-27 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows the promising future and essential issues on the storage of the supercritical gases, including hydrogen, methane and carbon dioxide, by adsorption with controlling the gas-solid interaction by use of designed nanoporous materials. It explains the reason why the storage of these gases with adsorption is difficult from the fundamentals in terms of gas-solid interaction. It consists of 14 chapters which describe fundamentals, application, key nanoporous materials (nanoporous carbon, metal organic frame works, zeolites) and their storage performance for hydrogen, methane, and carbon dioxide. Thus, this book appeals to a wide readership of the academic and industrial researchers and it can also be used in the classroom for graduate students focusing on clean energy technology, green chemistry, energy conversion and storage, chemical engineering, nanomaterials science and technology, surface and interface science, adsorption science and technology, carbon science and technology, metal organic framework science, zeolite science, nanoporous materials science, nanotechnology, environmental protection, and gas sensors.
Download or read book Carbon Nanomaterials and their Composites as Adsorbents written by J. Tharini and published by Springer Nature. This book was released on with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanomaterials Based Gas Sensors for SF6 Decomposition Components Detection written by Xiaoxing Zhang and published by BoD – Books on Demand. This book was released on 2017-06-07 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The insulating medium used in gas-insulated switchgear is SF6 gas, which has been widely used in substations. Energy generated by discharge will cause the composition of SF6 and generate characteristic component gases. Diagnosing the insulation defect through analyzing the decomposed gases of SF6 by chemical gas sensors is the optimal method due to its advantages. Carbon nanotubes, TiO2 nanotubes and graphene are chosen as the gas-sensing materials to build specific gas sensors for detecting each kind of SF6 decomposed gases and then enhance the gas sensitivity and selectivity by material modification. The properties and preparation methods are introduced in this book. The author studied the micro-adsorption mechanism and macro-gas sensing properties by theoretical calculation and sensing experiment.
Download or read book Carbon Based Nanomaterials and Nanocomposites for Gas Sensing written by Navinchandra Gopal Shimpi and published by Elsevier. This book was released on 2022-10-12 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-Based Nanomaterials and Nanocomposites for Gas Sensing discusses the state of the art, emerging challenges, properties, and opportunities of various carbon-based nanomaterials and nanocomposites, for their application in smart gas sensors. The book focuses on various carbon-based nanomaterials and their nanocomposites, sensing mechanism, device fabrication, and their application for the sensing of various hazardous gases. This is important for several industries, environmental monitoring, and human healthcare, due to increased industrialization. Carbon-Based Nanomaterials and Nanocomposites for Gas Sensing provides systematic and effective guidelines for researchers who want to gain a fundamental understanding of how this class of materials is being used for gas sensing. Since these sensors can be applied for the automation of numerous industrial processes, as well as for everyday monitoring of various activities, such as public safety, engine performance, medical therapeutics, and in many other situations, this book will catch the attention of readers and motivate them for advanced research in the development of smart and efficient gas sensors. - Offers a one-stop resource, bringing together information currently scattered over journal papers and project reports - Presents a focused concept reflecting the properties, synthesis, and sensing capabilities of carbon-based nanomaterials and their composites - Combines fundamental experimental and theoretical information with industrial needs and engineering design methods
Download or read book Carbon Nanomaterials and their Nanocomposite Based Chemiresistive Gas Sensors written by Shivani Dhall and published by Elsevier. This book was released on 2023-01-20 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanomaterials and their Nanocomposite-Based Chemiresistive Gas Sensors: Applications, Fabrication and Commercialization sets out how carbon nanomaterials based chemiresistive gas sensor are made, and their applications at lab and industrial levels. The book focuses on major advances in the field of chemiresistive gas sensors in recent years and their potential applications in environmental monitoring and healthcare. Carbon Nanomaterials and their Nanocomposite-Based Chemiresistive Gas Sensors: Applications, Fabrication and Commercialization provides systematic and effective guidelines to the researchers as well as learners about sensor, their fabrication and applications. Chemiresistive sensors are widely used in automation of numerous industrial processes as well as for everyday monitoring of various activities as public safety, engine performance, medical therapeutics, and in many other situations hence the book will catch the attention of readers and motivate them for advanced research for the development of smart and efficient gas sensors. With full coverage of the state of the art in this active research field, the book will appeal to researchers in a broad range of disciplines, including nanotechnology, engineering, materials science, chemistry and physics. - Offers a one-stop resource, bringing together information currently scattered over journal papers, industrial/lab outcomes and project reports - Presents information about the properties, synthesis of nanomaterials, their device fabrication and applications as sensing materials - Combining fundamental, experimental and theoretical knowledge with industrial needs and engineering design methods
Download or read book Functional Nanomaterials written by Sabu Thomas and published by Springer Nature. This book was released on 2020-06-12 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the current state-of-art in oxide nanostructures, carbon nanostructures and 2D materials fabrication. It covers mimicking of sensing mechanisms and applications in gas sensors. It focuses on gas sensors based on functional nanostructured materials, especially related to issues of sensitivity, selectivity, and temperature dependency for sensors. It covers synthesis, properties, and current gas sensing tools and discusses the necessity for miniaturized sensors. This book will be of use to senior undergraduate and graduate students, professionals, and researchers in the field of solid-state physics, materials science, surface science and chemical engineering.
Download or read book Carbon Nanomaterials written by Yury Gogotsi and published by CRC Press. This book was released on 2013-10-24 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information on synthesis, properties, and applications of carbon nanomaterials. With novel materials, such as graphene (atomically flat carbon) or carbon onions (carbon nanospheres), the family of carbon nanomaterials is rapidly growing. This book provides a state-of-the-art overview and in-depth analysis of the most important ca
Download or read book Carbon Nanomaterials in Clean Energy Hydrogen Systems written by Bogdan Baranowski and published by Springer Science & Business Media. This book was released on 2008-11-24 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2007 ARW “Using Carbon Nanomaterials in Clean-Energy Hydrogen Systems” (UCNCEHS’2007) was held in September 22–28, 2007 in the remarkable town Sudak (Crimea, Ukraine) known for its heroic and unusual fate. In the tradition of the earlier conferences, UCNCEHS’2007 meeting served as an multidisciplinary forum for the presentation and discussion of the most recent research on transition to hydrogen-based energy systems, technologies for hydrogen production, storage, utilization, carbon nanomaterials processing and chemical behavior, energy and environmental problems. The aim of UCNCEHS’2007 was to provide the wide overview of the latest scientific results on basic research and technological applications of hydrogen interactions with carbon materials. The active representatives from research/academic organizations and governmental agencies could meet, discuss and present the most recent advances in hydrogen concepts, processes and systems, to evaluate current progress and to exchange academic information, to identify research needs and future development in this important area. This ARW should help further the progress of hydrogen-based science and promote the role of hydrogen and carbon nanomaterials in the energy field.
Download or read book Carbon Nanomaterial Based Adsorbents for Water Purification written by Suprakas Sinha Ray and published by Elsevier. This book was released on 2020-06-27 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deterioration of water quality and unavailability of drinkable water are pressing challenges worldwide. The removal of toxic organic and inorganic pollutants from water is vital for a clean environment, as a response to water scarcity. Adsorption-based water technologies are among the most widely used because of their high efficiency and low cost, without relying on a complex infrastructure. In recent years, carbon nanomaterials (CNMs), such as graphene and derivatives, carbon nanotubes, carbon nanofibers, nanoporous carbon, fullerenes, graphitic carbon nitride, and nanodiamonds have been extensively exploited as adsorbents due to their extraordinary surface properties, ease of modification, large surface area, controlled structural varieties, high chemical stability, porosity, low density, ease of regeneration, and reusability. This book provides a thorough overview of the state of the art in carbon nanomaterials as they are used for adsorption applications in water purifications, as well as addressing their toxicological challenges. This volume primarily explores the fundamentals of adsorption, its mechanical aspects, synthesis and properties of CNMs, and adsorption performances of CNMs and their nanocomposites with organic and inorganic materials. Structural engineering and activation processes produce materials with enhanced adsorptive properties and separation efficiencies. Furthermore, the formation of CNMs with 2D and 3D macro-and microstructures and high porosities is a potential approach to improve adsorption performances and extend CNM use at the industrial level. The book also addresses important issues regarding these adsorbents that potentially affect future research and industrial applications of carbon-based nanoadsorbents in water security. - Presents advances in multifunctional 3D superstructures of carbon nanomaterials and their composites for adsorption applications - Outlines the fundamentals on synthesis and characterization techniques of carbon-based nanostructures and their composites - Assesses the major toxicological challenges in using nanostructured materials as adsorbents for water purification
Download or read book Carbon Nanotubes for Energy and Environmental Applications written by Soney C. George and published by CRC Press. This book was released on 2022-10-27 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book, Carbon Nanotubes for Energy and Environmental Applications, covers the timely issue of green applications of carbon nanotubes. It covers the diverse usages of carbon nanotubes for the sensing of environmentally hazardous chemicals, for water purification, for the protection of the environment, and for new energy applications. The development of highly sensitive CNT-based gas sensors for air pollution monitoring, for green synthesis of carbon nanotubes, and for green energy applications are discussed in this volume. The diverse topics in the volume include nanodiamonds for energy storage, new lubricant additives that enhance energy efficiency, how carbon nanotubes can be applied in the food and agricultural sectors, the use of CNTs in water purification and desalination, carbon nanotubes-based electrochemical sensors for environmentally hazardous chemicals, and much more. This timely book addresses a need of the hour and will provide valuable for environmentally conscious industry professionals, faculty and students, and researchers in materials science, engineering, physics, and chemistry with interest in nanomaterials.
Download or read book Study of Gas Adsorption on As produced and Modified Carbon Nanotubes written by Dinesh Singh Rawat and published by . This book was released on 2010 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volumetric adsorption isotherm measurements were used to study the adsorption characteristics of ethane and butane on as-produced single-walled carbon nanotubes. Two adsorption substeps were obtained for each alkane molecule. However, the size of the high pressure substep was found to be gradually smearing with the increase in size of the adsorbed molecule. This phenomenon is interpreted as size entropy effect for linear molecules. Kinetics measurements of alkane adsorption on SWNTs were also conducted and their dependence on the molecular length was determined. Similar adsorption measurements were performed for Argon (Ar) on as-produced single-walled carbon nanotubes and nanotubes that were structurally modified using acid treatment. Enhancement of the sorptive capacity and the presence of two distinct kinetics of gas adsorption verified partial opening of single walled carbon nanotubes as a result of chemical treatment. Multiwalled carbon nanotubes were exposed to oxygen plasma treatment for varying time periods. Afterwards, adsorption measurements of Methane (CH 4) were conducted on untreated and oxygen plasma treated tubes. The presence of an additional substep, after exposing multiwalled carbon nanotubes to oxygen plasma for varying time periods, suggested progressive cleaning of nanotube surface.
Download or read book Natural Gas Adsorption on Carbonaceous Nanomaterials written by Delavar Maedeh and published by LAP Lambert Academic Publishing. This book was released on 2015-01-06 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas is an attractive alternative for conventional fuels due to low price, being naturally abundant and less toxic gas emission. To develope the ANG thechnology, appropriate adsorbents with superior chractarestics and high storage capacities are required for development. Carbonaceous materials due to their appropriate properties have been evaluated for natural gas adsorption. With respect to the unique characteristics of carbon nanotubes, representation of appropriate gas storage properties by ANG method is an interesting projected area. In the first chapter, natural gas adsorption on different types of carbon nanotubes was investigated and compared to the adsorption data obtained by Granular activated carbons. Then, the effects of various chemical treatments on the performance of carbon nanotubes for natural gas adsorption were examined and discussed in the second chapter. Furthermore, sorption equilibria, kinetics and thermodynamic studies of adsorption processes were evaluated in this book.
Download or read book Environmental Applications of Carbon Nanomaterials Based Devices written by Shadpour Mallakpour and published by John Wiley & Sons. This book was released on 2021-09-17 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Applications of Carbon Nanomaterials-Based Devices Explore this insightful treatment of the function and fabrication of high-performance devices for environmental applications Environmental Applications of Carbon Nanomaterials-Based Devices delivers an overview of state-of-the-art technology in functionalized carbon nanomaterials-based devices for environmental applications. The book provides a powerful foundation, based in materials science, on functionalized carbon nanomaterials in general, and environmental science and device fabrication in particular. The book focuses on the chemical and physical methods of functionalization of carbon nanomaterials and the technology of device fabrication, including lab-on-a-chip approaches and applications such as wastewater purification and gas sensing. It provides readers with a thorough understanding of effective environmental remediation techniques performed with carbon nanomaterials-based devices. In addition to topics such as cross-linked graphene oxide membranes assembled with graphene oxide nanosheets, free-standing graphene oxide-chitin nanocrystal composite membranes for dye adsorption and oil/water separation, and in-situ grown covalent organic framework nanosheets on graphene for membrane-based dye/salt separation, readers will also benefit from the inclusion of: A thorough introduction to charge-gated ion transport through polyelectrolyte intercalated amine reduced graphene oxide membranes An exploration of hydrotalcite/graphene oxide hybrid nanosheets functionalized nanofiltration membrane for desalination A discussion of the incorporation of attapulgite nanorods into graphene oxide nanofiltration membranes for efficient dyes wastewater treatment An examination of attapulgite nanofibers and graphene oxide composite membranes for high-performance molecular separation Perfect for materials scientists, analytical chemists, and environmental chemists, Environmental Applications of Carbon Nanomaterials-Based Devices will also earn a place in the libraries of sensor developers seeking a one-stop resource for high-performance devices and sensors useful for environmental applications.
