Download or read book Heterogeneous Nucleation and Growth of Nanoparticles at Environmental Interfaces written by and published by . This book was released on 2016 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, mineral nucleation is a phase transformation of aqueous components to solids with an accompanying creation of new surfaces. In this evolutional, yet elusive, process, nuclei often form at environmental interfaces, which provide remarkably reactive sites for heterogeneous nucleation and growth. Naturally occurring nucleation processes significantly contribute to the biogeochemical cycles of important components in the Earth's crust, such as iron and manganese oxide minerals and calcium carbonate. However, in recent decades, these cycles have been significantly altered by anthropogenic activities, which affect the aqueous chemistry and equilibrium of both surface and subsurface systems. These alterations can trigger the dissolution of existing minerals and formation of new nanoparticles (i.e., nucleation and growth) and consequently change the porosity and permeability of geomedia in subsurface environments. Newly formed nanoparticles can also actively interact with components in natural and engineered aquatic systems, including those posing a significant hazard such as arsenic. These interactions can bilaterally influence the fate and transport of both newly formed nanoparticles and aqueous components. Due to their importance in natural and engineered processes, heterogeneous nucleation at environmental interfaces has started to receive more attention. However, a lack of time-resolved in situ analyses makes the evaluation of heterogeneous nucleation challenging because the physicochemical properties of both the nuclei and surfaces significantly and dynamically change with time and aqueous chemistry. This Account reviews our in situ kinetic studies of the heterogeneous nucleation and growth behaviors of iron(III) (hydr)oxide, calcium carbonate, and manganese (hydr)oxide minerals in aqueous systems. In particular, we utilized simultaneous small-angle and grazing incidence small-angle X-ray scattering (SAXS/GISAXS) to investigate in situ and in real-time the effects of water chemistry and substrate identity on heterogeneously and homogeneously formed nanoscale precipitate size dimensions and total particle volume. Using this technique, we also provided a new platform for quantitatively comparing between heterogeneous and homogeneous nucleation and growth of nanoparticles and obtaining undiscovered interfacial energies between nuclei and surfaces. In addition, nanoscale surface characterization tools, such as in situ atomic force microscopy (AFM), were utilized to support and complement our findings. With these powerful nanoscale tools, we systematically evaluated the influences of environmentally abundant (oxy)anions and cations and the properties of environmental surfaces, such as surface charge and hydrophobicity. The findings, significantly enhanced by in situ observations, can lead to a more accurate prediction of the behaviors of nanoparticles in the environment and enable better control of the physicochemical properties of nanoparticles in engineered systems, such as catalytic reactions and energy storage.
Download or read book Environmental Nanotoxicology written by Patrick Omoregie Isibor and published by Springer Nature. This book was released on 2024 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Nanotoxicology: Combatting the Minute Contaminants is a comprehensive guide to the rapidly evolving field of nanotoxicology and its implications for environmental health and safety. This book results from the collaborative efforts of leading experts and researchers from diverse disciplines, aiming to thoroughly understand the interactions between nanomaterials and the environment and their potential impacts on the delicate balance of our ecosystems. Nanotechnology has witnessed remarkable innovations leading to the development of nanomaterials with novel properties and applications across various industries. Alongside these innovations, concerns have arisen about the potential risks that nanomaterials may pose to the environment and living organisms. This book addresses these concerns by comprehensively exploring the field's key concepts, principles, and methodologies. It includes case studies and offers insights into developing appropriate regulatory frameworks and guidelines for the responsible use and disposal of nanomaterials. The book is a valuable resource for researchers and professionals working in nanotoxicology on the complex challenges posed by the intersection of nanomaterials and the environment. It is also an essential reference for students studying environmental science, toxicology, and nanotechnology. Addresses risk assessment and management in nanotoxicology; Explores the life cycle assessment of nanoparticles; Sheds light on emerging technologies and future directions in environmental nanotoxicology. .
Download or read book Nucleation and Growth of Metals written by Paul-Henri Haumesser and published by Elsevier. This book was released on 2016-07-29 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nucleation and Growth of Metals: From Thin Films to Nanoparticles explores how nucleation and growth phenomena condition the morphology and related characteristics of metallic thin films and nanoparticles to help control the functional properties of these objects. The book brings a rigorous theoretical approach to nucleation and growth phenomena, with a particular focus on the essential aspects and outcomes of this theory. The author explores a general framework for the nucleation and growth of condensed phases from liquid solutions. Practical situations are extensively described, providing state-of-the art information on Cu electroplating and related processes for the fabrication of advanced interconnects and elaboration of metallic nanoparticles. Derives the basic equations of nucleation from fundamental thermodynamic and kinetic relations Explores the main outcomes of a range of nucleation theories Features practical examples to further develop the theoretical aspects Provides state-of-the art information on Cu electroplating and related processes for the fabrication of advanced interconnects and elaboration of metallic nanoparticles
Download or read book Nucleation of Minerals Precursors Intermediates and Their Use in Materials Chemistry written by Denis Gebauer and published by MDPI. This book was released on 2018-08-09 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Nucleation of Minerals: Precursors, Intermediates and Their Use in Materials Chemistry" that was published in Minerals
Download or read book Biogeochemistry of Anthropogenic Particles written by Denise M. Mitrano and published by Frontiers Media SA. This book was released on 2021-05-18 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid Liquid Separation Technologies written by Olayinka I. Ogunsola and published by CRC Press. This book was released on 2022-04-18 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent research and advances in various solid–liquid separation technologies and some applications for treating produced water. It covers fundamental principles and the importance of produced water in major industrial sectors and compares solid–liquid separation technologies. In addition, this book Presents the results of research studies conducted to evaluate the performance of solid–liquid separation technologies Discusses a wide range of technologies, including membrane, filtration, crystallization, desalination, supercritical fluids, coagulation, and floatation Includes experimental, theoretical, modeling, and process design studies With its comprehensive coverage, this book is an essential reference for chemical researchers, scientists, and engineers in industry, academia, and professional laboratories. It is also an important resource for graduate and advanced undergraduate students studying solid–liquid separations.
Download or read book Geochemistry of Geologic CO2 Sequestration written by Donald J. DePaolo and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 77 of Reviews in Mineralogy and Geochemistry focuses on important aspects of the geochemistry of geological CO2 sequestration. It is in large part an outgrowth of research conducted by members of the U.S. Department of Energy funded Energy Frontier Research Center (EFRC) known as the Center for Nanoscale Control of Geologic CO2 (NCGC). Eight out of the 15 chapters have been led by team members from the NCGC representing six of the eight partner institutions making up this center - Lawrence Berkeley National Laboratory (lead institution, D. DePaolo - PI), Oak Ridge National Laboratory, The Ohio State University, the University of California Davis, Pacific Northwest National Laboratory, and Washington University, St. Louis.
Download or read book Green Nanoparticles The Future of Nanobiotechnology written by Shilpi Srivastava and published by Springer Nature. This book was released on 2021-12-02 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the fundamental concepts of the green synthesis of nanoparticles and presents the latest advances in this emerging field. Providing a comprehensive overview of developments related to nanoparticle synthesis using fungi, algae, bryophytes, pteridophytes, gymnosperms, monocotyledons, dicotyledonous (angiosperms) and animal systems, it also explores techniques for the characterization of these nanoparticles. Lastly, it reviews the applications and toxicity of biologically synthesized green nanoparticles. Given its scope, it is a valuable resource for students, researchers and policymakers working in the field of nanobiotechnology and nanoscience.
Download or read book Nanoparticles and the Environment written by Jillian F. Banfield and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 44 of Reviews in Mineralogy and Geochemistry contains descriptions of the inorganic and biological processes by which nanoparticles form, information about the distribution of nanoparticles in the atmosphere, aqueous environments, and soils, discussion of the impact of size on nanoparticle structure, thermodynamics, and reaction kinetics, consideration of the nature of the smallest nanoparticles and molecular clusters, pathways for crystal growth and colloid formation, analysis of the size-dependence of phase stability and magnetic properties, and descriptions of methods for the study of nanoparticles. These questions are explored through both theoretical and experimental approaches. This volume was prepared in conjunction with a short course, "Nanoparticles in the Environment and Technology," convened on the campus of the University of California, Davis, CA on December 8 and 9, 2001.
Download or read book Heterogeneous Nucleation at Hydrophobic Interfaces written by David McKechnie and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterogeneous Nanocatalysis for Energy and Environmental Sustainability Volume 2 written by Putla Sudarsanam and published by John Wiley & Sons. This book was released on 2023-01-04 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore the environmental applications of heterogeneous nanocatalysis in the field of alternative energy production In Volume 2: Environmental Applications of Heterogeneous Nanocatalysis for Energy and Environmental Sustainability, a team of distinguished researchers discusses the foundational concepts and practical applications of heterogeneous nanocatalysis for alternative energy production. Volume 2 focuses on the purification of auto exhaust pollutants and volatile organic compounds, as well as CO2 conversion and wastewater treatment over a range of nano-sized catalysts.
Download or read book Characterization of Nanoparticle Formation and Aggregation on Mineral Surfaces written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research effort in the Waychunas group is focused on the characterization and measurement of processes at the mineral-water interfaces specifically related to the onset of precipitation. This effort maps into one of the main project groups with the Penn State University EMSI (CEKA) known as PIG (Precipitation Interest Group), and involves collaborations with several members of that group. Both synchrotron experimentation and technique development are objectives, with the goals of allowing precipitation from single molecule attachment to sub-monolayer coverage to be detected and analyzed. The problem being addressed is the change in reactivity of mineral interfaces due to passivation or activation by precipitates or sorbates. In the case of passivation, fewer active sites may be involved in reactions with environmental fluids, while in the activated case the precipitate may be much more reactive than the substrate, or result in the creation of a higher density of active sites. We approach this problem by making direct measurements of several types of precipitation reactions: iron-aluminum oxide formation on quartz and other substrates from both homogeneous (in solution) nucleation, and heterogeneous (on the surface) nucleation; precipitation and sorption of silicate monomers and polymers on Fe oxide surfaces; and development of grazing-incidence small angle x-ray scattering (GISAXS) as a tool for in-situ measurement of precipitate growth, morphology and aggregation. We expect that these projects will produce new fundamental information on reactive interface growth, passivation and activation, and be applicable to a wide range of environmental interfaces.
Download or read book Nanomaterials in the Environment written by Satinder Kaur Brar and published by ASCE Press. This book was released on 2015-10-01 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text presents the most current knowledge on the environmental impact of materials and products developed using nanotechnology. Although nanomaterials are revolutionising electronics, medicine, transportation and many other industries, they pose risks to living beings and ecosystems that are barely understood. Leading researchers here consider the science of nanomaterials, their behaviour in the environment, risk assessment and toxicology, and the future of nanomaterials.
Download or read book Environmental Surfaces and Interfaces from the Nanoscale to the Global Scale written by Patricia Maurice and published by John Wiley & Sons. This book was released on 2009-06-15 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced exploration ofwater-rock interactions Based on the author's fifteen years of teaching and tried-and-tested experiences in the classroom, here is a comprehensive exploration of water-rock interactions. Environmental Surfaces and Interfaces from the Nanoscale to the Global Scale covers aspects ranging from the theory of charged particle surfaces to how minerals grow and dissolve to new frontiers in W-R interactions such as nanoparticles, geomicrobiology, and climate change. Providing basic conceptual understanding along with more complex subject matter, Professor Patricia Maurice encourages students to look beyond the text to ongoing research in the field. Designed to engage the learner, the book features: Numerous case studies to contextualize concepts Practice and thought questions at the end of each chapter Broad coverage from basic theory to cutting-edge topics such as nanotechnology Both basic and applied science This text goes beyond W-R interactions to touch on a broad range of environmental disciplines. While written for advanced undergraduate and graduate students primarily in geochemistry and soil chemistry, Environmental Surfaces and Interfaces from the Nanoscale to the Global Scale will serve the needs of such diverse fields as environmental engineering, hydrogeology, physics, biology, and environmental chemistry.
Download or read book Metal Nanocrystals written by Kallum M. Koczkur and published by American Chemical Society. This book was released on 2020-07-31 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our society depends heavily on metals. They are ubiquitous construction materials, critical interconnects in integrated circuits, common coinage materials, and more. Excitingly, new uses for metals are emerging with the advent of nanoscience, as metal crystals with nanoscale dimensions can display new and tunable properties. The optical and photothermal properties of metal nanocrystals have led to cancer diagnosis and treatment platforms now in clinical trials, while, at the same time, the ability to tune the surface features of metal nanocrystals is giving rise to designer catalysts that enable more sustainable use of precious resources. These are just two examples of how metal nanocrystals are addressing important social needs.
Download or read book Colloidal Metal Oxide Nanoparticles written by and published by Elsevier. This book was released on 2019-10-16 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal Metal Oxide Nanoparticles: Synthesis, Characterization and Applications is a one-stop reference for anyone with an interest in the fundamentals, synthesis and applications of this interesting materials system. The book presents a simple, effective and detailed discussion on colloidal metal oxide nanoparticles. It begins with a general introduction of colloidal metal oxide nanoparticles, then delves into the most relevant synthesis pathways, stabilization procedures, and synthesis and characterization techniques. Final sections discuss promising applications, including bioimaging, biosensing, diagnostic, and energy applications—i.e., solar cells, supercapacitors and environment applications—i.e., the treatment of contaminated soil, water purification and waste remediation. Provides the most comprehensive resource on the topic, from fundamentals, to synthesis and characterization techniques Presents key applications, including biomedical, energy, electronic and environmental Discusses the most relevant techniques for synthesis, patterning and characterization
Download or read book Nanotechnology in Catalysis 3 Volumes written by Bert F. Sels and published by John Wiley & Sons. This book was released on 2017-10-16 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieses Handbuch präsentiert die in den letzten zehn Jahren entstandenen neuen Anwendungsbereiche und gibt einen umfassenden Überblick über dieses wissenschaftlich und ökonomisch wichtige Gebiet. Einzigartig ist die Verbindung von Grundlagenforschung und industrieller Entwicklung.
