Download or read book Data based Analysis of Nanoporous Metals written by Claudia Richert and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, a comprehensive workflow for an FE beam modeling approach was developed, which allows to predict the macroscopic elastic and plastic mechanical behavior of nanoporous structures. An in-depth characterization of various geometrical and topological descriptors provided detailed insights about the comparability of experimental nanoporoug gold and computer-generated structures. The combination of the macroscopic mechanical predictions by FE simulations and the structural descriptors derived for the over one hundred computer-generated structures enabled to propose an improved scaling law.
Download or read book Structure and Property Linkage of Nanoporous Materials written by Haomin Liu and published by . This book was released on 2021 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nanoporous metals have recently been drawn significant interest in various fields of research. Their open-cell structure and high surface area per unit volume give them unique electrical, mechanical, and catalytic properties as well as high radiation resistance. These properties make nanoporous metals excellent candidates for a variety of high-tech applications including catalysts, biosensors, and actuators. However, the mechanical properties of nanoporous metals have not yet been well determined. Scaling relations linking the mechanical properties of nanoporous materials to their dense counterparts are found not to agree with experimental determinations. This work focuses on integrating computational simulations, continuum modeling, and deep learning techniques to gain data-driven insights about the relationships between the nanostructure and mechanical properties of nanoporous gold. We investigate the effect of structural components; ligaments and nodes on the mechanical properties of the nanoporous materials. In addition, we developed a mathematical model incorporating the bending and stretching deformation modes of ligaments to predict the stiffness of the nanoporous structure based on continuum theory. Moreover, we proposed an interpretable deep learning strategy incorporating the three-dimensional convolutional neural network and interpretation technique. This new relation is found to correctly describe the mechanical properties of nanoporous Copper (Cu)"--Page viii.
Download or read book AI Guided Design and Property Prediction for Zeolites and Nanoporous Materials written by German Sastre and published by John Wiley & Sons. This book was released on 2023-04-17 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cohesive and insightful compilation of resources explaining the latest discoveries and methods in the field of nanoporous materials In Artificial Intelligence for Zeolites and Nanoporous Materials: Design, Synthesis and Properties Prediction a team of distinguished researchers delivers a robust compilation of the latest knowledge and most recent developments in computational chemistry, synthetic chemistry, and artificial intelligence as it applies to zeolites, porous molecular materials, covalent organic frameworks and metal-organic frameworks. The book presents a common language that unifies these fields of research and advances the discovery of new nanoporous materials. The editors have included resources that describe strategies to synthesize new nanoporous materials, construct databases of materials, structure directing agents, and synthesis conditions, and explain computational methods to generate new materials. They also offer material that discusses AI and machine learning algorithms, as well as other, similar approaches to the field. Readers will also find a comprehensive approach to artificial intelligence applied to and written in the language of materials chemistry, guiding the reader through the fundamental questions on how far computer algorithms and numerical representations can drive our search of new nanoporous materials for specific applications. Designed for academic researchers and industry professionals with an interest in synthetic nanoporous materials chemistry, Artificial Intelligence for Zeolites and Nanoporous Materials: Design, Synthesis and Properties Prediction will also earn a place in the libraries of professionals working in large energy, chemical, and biochemical companies with responsibilities related to the design of new nanoporous materials.
Download or read book Machine Learning and Data Mining in Materials Science written by Norbert Huber and published by Frontiers Media SA. This book was released on 2020-04-22 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoporous Metals for Advanced Energy Technologies written by Yi Ding and published by Springer. This book was released on 2016-03-19 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the state-of-the-art research in nanoporous metals for potential applications in advanced energy fields, including proton exchange membrane fuel cells, Li batteries (Li ion, Li-S, and Li-O2), and supercapacitors. The related structural design and performance of nanoporous metals as well as possible mechanisms and challenges are fully addressed. The formation mechanisms of nanoporous metals during dealloying, the microstructures of nanoporous metals and characterization methods, as well as miscrostructural regulation of nanoporous metals through alloy design of precursors and surface diffusion control are also covered in detail. This is an ideal book for researchers, engineers, graduate students, and government/industry officers who are in charge of R&D investments and strategy related to energy technologies.
Download or read book Nanoporous Gold written by Arne Wittstock and published by Royal Society of Chemistry. This book was released on 2012-03-28 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-surface-area materials have recently attracted significant interest due to potential applications in various fields such as electrochemistry and catalysis, gas-phase catalysis, optics, sensors and actuators, energy harvesting and storage. In contrast to classical materials the properties of high-surface-area materials are no longer determined by their bulk, but by their nanoscale architecture. Nanoporous gold (np-Au) represents the fascinating class of mesoporous metals that have been intensively investigated in recent years. The current interest and the increasing number of scientific publications show that np-Au by itself is an outstanding nano-material that justifies a book devoted to all aspects of its properties and applications. The resulting publication is a discussion of this unique nano-material and is an accessible and comprehensive introduction to the field. The book provides a broad, multi-disciplinary platform to learn more about the properties of nanoporous gold from an inter-disciplinary perspective. It starts with an introduction and overview of state-of-the-art applications and techniques characterizing this material and its applications. It then covers the progress in research within the last years. The chapters are in-depth overviews written by the world's leading scientists in the particular field. Each chapter covers one technique or application so that the reader can easily target their favoured topic and will get the latest and state-of-the-art information in the field.
Download or read book Analysis and Characterisation of Metal Based Nanomaterials written by and published by Elsevier. This book was released on 2021-05-28 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis and Characterisation of Metal-Based Nanomaterials, Volume 93 in the Comprehensive Analytical Chemistry series, introduces recent developments in analytical methodologies for detection, characterization and quantification of metal-based nanomaterials and their applications to a variety of complex environmental, biological and food samples as well as different consumer products. Single-particle inductively coupled plasma mass spectrometry is highlighted as a powerful analytical tool for number-based concentration and size distribution, also from the metrological viewpoint. An emerging approach for the measurement of multi-metal nanoparticles by single-particle inductively coupled plasma time-of-flight mass spectrometry is discussed. Imaging of metal-based nanoparticles by hyphenated inductively coupled plasma-based techniques is also introduced. The potential of different liquid chromatography and field flow fractionation separation techniques hyphenated to inductively coupled plasma mass spectrometry is emphasized as a powerful tool in particular for complex matrices and small particles sizes. The use of different microscopic techniques for the characterization of metal-based nanoparticles and characterization of metal-based nanoparticles as contrast agents for magnetic resonance imaging are presented. Moreover, occurrence, behaviour and fate of inorganic nanoparticles in the environment is overviewed. Finally, the need for quality control standards and reference nano-materials is emphasized throughout. - Presents recent developments in analytical methodologies based on mass spectrometry, light scattering and microscopic techniques for detection, characterization and quantification of metal-based nanomaterials - Describes applications of the nanoparticle analysis in a variety of complex environmental, biological and food samples as well as different consumer products - Provides the metrological aspects for the analysis of metal-based nanoparticles when using emerging techniques such as single-particle inductively coupled plasma mass spectrometry
Download or read book Nanocasting written by An-Hui Lu and published by Royal Society of Chemistry. This book was released on 2010 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials with tailored properties are regarded as a fundamental element in the development of future science and technology. Research is still ongoing into the nanosized construction elements required to create functional solids. The recently developed technique, nanocasting, has great advantage over others in terms of the synthesis of special nanostructured materials by the careful choice of suitable elements and nanoengineering steps. This new book summarizes the recent developments in nanocasting, including the principles of nanocasting, syntheses of novel nanostructured materials, characterization methods, detailed synthetic recipes and further possible development in this area. The book focuses on the synthesis of porous solids from the viewpoint of methodology and introduces the science of nanocasting from fundamental principles to their use in synthesis of various materials. It starts by outlining the principles of nanocasting, requirements to the templates and precursors and the tools needed to probe matter at the nanoscale level. It describes how to synthesize nano structured porous solids with defined characteristics and finally discusses the functionalization and application of porous solids. Special attention is given to new developments in this field and future perspectives. A useful appendix covering the detailed synthetic recipes of various templates including porous silica, porous carbon and colloidal spheres is included which will be invaluable to researchers wanting to follow and reproduce nanocast materials. Topics covered in the book include: * inorganic chemistry * organic chemistry * solution chemistry * sol-gel and interface science * acid-base equilibria * electrochemistry * biochemistry * confined synthesis The book gives readers not only an overview of nanocasting technology, but also sufficient information and knowledge for those wanting to prepare various nanostructured materials without needing to search the available literature.
Download or read book Nanocomposites and Nanoporous Materials VIII written by Chang Kyu Rhee and published by Trans Tech Publications Ltd. This book was released on 2008-02-27 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). The recent utilization of nano-sized powders and porous materials has led to the expectation that it will lead to basic breakthrough solutions for prospective nanomaterial products offering high performance and multi-functionalism. For this reason, many industrial countries have financially supported nanostructured materials development and their use in technical innovation.
Download or read book Nanoporous Materials Science And Engineering written by G Q Max Lu and published by World Scientific. This book was released on 2004-11-22 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porous materials are of scientific and technological importance because of the presence of voids of controllable dimensions at the atomic, molecular, and nanometer scales, enabling them to discriminate and interact with molecules and clusters. Interestingly the big deal about this class of materials is about the “nothingness” within — the pore space. International Union of Pure and Applied Chemistry (IUPAC) classifies porous materials into three categories — micropores of less than 2 nm in diameter, mesopores between 2 and 50 nm, and macropores of greater than 50 nm. In this book, nanoporous materials are defined as those porous materials with pore diameters less than 100 nm.Over the last decade, there has been an ever increasing interest and research effort in the synthesis, characterization, functionalization, molecular modeling and design of nanoporous materials. The main challenges in research include the fundamental understanding of structure-property relations and tailor-design of nanostructures for specific properties and applications. Research efforts in this field have been driven by the rapid growing emerging applications such as biosensor, drug delivery, gas separation, energy storage and fuel cell technology, nanocatalysis and photonics. These applications offer exciting new opportunities for scientists to develop new strategies and techniques for the synthesis and applications of these materials.This book provides a series of systematic reviews of the recent developments in nanoporous materials. It covers the following topics: (1) synthesis, processing, characterization and property evaluation; (2) functionalization by physical and/or chemical treatments; (3) experimental and computational studies on fundamental properties, such as catalytic effects, transport and adsorption, molecular sieving and biosorption; (4) applications, including photonic devices, catalysis, environmental pollution control, biological molecules separation and isolation, sensors, membranes, hydrogen and energy storage, etc./a
Download or read book Advances in Intelligent Data Analysis and Applications written by Jeng-Shyang Pan and published by Springer Nature. This book was released on 2021-11-25 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the Proceeding of the Sixth International Conference on Intelligent Data Analysis and Applications, October 15–18, 2019, Arad, Romania. This edition is technically co-sponsored by “Aurel Vlaicu” University of Arad, Romania, Southwest Jiaotong University, Fujian University of Technology, Chang’an University, Shandong University of Science and Technology, Fujian Provincial Key Lab of Big Data Mining and Applications, and National Demonstration Center for Experimental Electronic Information and Electrical Technology Education (Fujian University of Technology), China, Romanian Academy, and General Association of Engineers in Romania - Arad Section. The book covers a range of topics: Machine Learning, Intelligent Control, Pattern Recognition, Computational Intelligence, Signal Analysis, Modeling and Visualization, Multimedia Sensing and Sensory Systems, Signal control, Imaging and Processing, Information System Security, Cryptography and Cryptanalysis, Databases and Data Mining, Information Hiding, Cloud Computing, Information Retrieval and Integration, Robotics, Control, Agents, Command, Control, Communication and Computers (C4), Swarming Technology, Sensor Technology, Smart cities. The book offers a timely, board snapshot of new development including trends and challenges that are yielding recent research directions in different areas of intelligent data analysis and applications. The book provides useful information to professors, researchers, and graduated students in area of intelligent data analysis and applications.
Download or read book Structural Tailoring of Nanoporous Metals and Study of Their Mechanical Behavior written by Lei Wang and published by . This book was released on 2013 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virtual Materials Design written by Norbert Huber and published by Frontiers Media SA. This book was released on 2022-08-02 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Based Metal Free Catalysts written by Liming Dai and published by John Wiley & Sons. This book was released on 2018-08-29 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering comprehensive coverage of this hot topic, this two-volume handbook and ready reference treats a wide range of important aspects, from synthesis and catalytic properties of carbon materials to their applications as metal-free catalysts in various important reactions and industrial processes. Following a look at recent advances in the development of carbon materials as carbon-based metal-free catalysts, subsequent sections deal with a mechanistic understanding for the molecular design of efficient carbon-based metal-free catalysts, with a special emphasis on heteroatom-doped carbon nanotubes, graphene, and graphite. Examples of important catalytic processes covered include clean energy conversion and storage, environmental protection, and synthetic chemistry. With contributions from world-leading scientists, this is an indispensable source of information for academic and industrial researchers in catalysis, green chemistry, electrochemistry, materials science, nanotechnology, energy technology, and chemical engineering, as well as graduates and scientists entering the field.
Download or read book Metals and Materials written by Debashish Bhattacharjee and published by Allied Publishers. This book was released on 2011* with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Designing Three Dimensional Nanoporous Metal Alloys for Selective Electrochemical Conversion Catalysis written by Swarnendu Chatterjee and published by . This book was released on 2020 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rising demands of clean energy owing to a burgeoning global population and deteriorating climate has given rise to new avenues of research in electrocatalysis focusing on extraction and storage of energy through electrochemical reactions. In contrast to heterogeneous catalysts, electrochemical catalysts often need to withstand harsh reaction environments with respect to electrolyte pH and applied overpotentials. The stability requirements constrain the breadth of applicable materials, limiting the viable catalysts to those composed of more noble metals, which are invariably more costly. The design of next generation electrocatalyst materials requires strategies to balance activity and stability while at the same time minimizing the utilization of expensive materials to limit costs. Open-framework nanocatalyst architectures show promise as they maximize surface area to volume ratios and their morphology and surface chemistry are readily tuned through controlled processing methodologies. Among the high aspect ratio, open-framework nanostructures, nanoporous metals obtained through dealloying offer a unique class of three dimensional electrode materials that are useful for a number of electrolytic processes owing to their conductive high surface area structure and tunable near surface composition. Herein, we study the porosity evolution processes in multimetallic alloys through classical dealloying and alternative methods, in pursuit of creating optimal bicontinuous nanoporous architectures for two important electrochemical reactions, central to the carbon and water cycles: CO2 reduction reaction (CO2RR) and oxygen evolution reaction (OER). To address the limitations of electrochemical dealloying for nanoporous metal synthesis, we first develop a new alternative method where we thermally decompose readily available transition metal dichalcogenides to create bicontinuous three dimensional metallic nanostructures. We show that spinodal decomposition with a proper balance of removal of the chalcogen component and surface diffusion of metal is possible that gives rise to uniform porosity length scales below 100 nm. Our new method is applicable to a broader range of materials including the refractory metals which are difficult to obtain in nanoporous bicontinuous form through conventional dealloying techniques. For CO2RR, we demonstrate favorable tuning of the near surface composition of core shell nanoporous alloys to mitigate a common problem in CO2 electrolysis which is the poisoning of electrocatalytic surface during long term reaction. CO2RR shows great promise as a remediation strategy to convert and store anthropogenic CO2. To realize its practical integration in industries with high CO2 emissions, uninterrupted activity of electrocatalyst is important at reasonable reaction timescales. Among the materials capable of electrochemically converting CO2 to formate which is a high energy density product, Palladium is unique in that it has shown substantial faradaic efficiency at minimal overpotential. Limiting its implementation, however, is its gradual deactivation through CO poisoning during constant potential CO2RR. Here, we show synthesis of core-shell nanoporous multi-metallic Pd alloys that display suppressed CO deactivation during formate production based on suitable choice of alloying component. The improvement in deactivation tolerance has been attributed to a combination of electronic impacts of subsurface alloying components as well as the composition dependent hydricity of the Pd alloys. The Pd skinned nanoporous alloys have been obtained by electrochemical dealloying where the high surface area electrode structure provides high formate partial current densities with minimal CO poisoning while not altering the formate selectivity at low CO2RR overpotentials. Aqueous CO2RR system also requires a stable electrocatalyst at the anode for the OER which requires stricter stability constraints for the electrocatalysts. OER is also the performance limiting component in the water splitting reactions of PEM electrolyzers. The oxidative potential of OER is difficult for many active materials to survive. In addition to the sluggish kinetics of the anodic OER, low catalyst stability and electrode conductivity lead to process inefficiencies. Higher valent oxidation states of Ir have been identified as the only materials that demonstrate a reasonable balance of activity and durability for acidic OER. Attempts to make nanoporous Ir employing dealloying for high surface area electrodes are limited owing to its strong tendency to make immobile oxides that defy morphology evolution through dealloying. Here we design a dealloying protocol to create unique nanoporous Ir morphologies, including porous nanosheets that exhibit sufficient activity and durability while displaying higher lateral and through-plane conductivity when compared to standard IrO2 catalysts. The metallic core of the nanoporous metal ligaments and absence of any binder/support result in low electrode and charge transfer resistances; ultimately giving rise to lower overpotential and improved electrochemically active surface area (ECSA) normalized current densities compared to IrO2. This thesis outlines the analysis of design of nanoporous core shell bicontinuous alloys and porous nanosheets through top down techniques for wide combinations of metals including the refractory metals which are difficult to obtain through existing dealloying methods. Nanoporous metal based electrodes show promise for utilization in high throughput CO2RR systems and PEM water electrolyzers both of which are important parts of renewable energy technologies.
Download or read book Advanced Manufacturing Processes IV written by Volodymyr Tonkonogyi and published by Springer Nature. This book was released on 2022-09-08 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a timely snapshot of innovative research and developments at the interface between manufacturing, materials and mechanical engineering, and quality assurance. It covers various manufacturing processes, such as grinding, boring, milling, broaching, coatings, including additive manufacturing. It focuses on cutting, abrasive, stamping-drawing processes, shot peening, and complex treatment. It describes temperature distribution, twisting deformation, defect formation process, failure analysis, as well as the convective heat exchange and non-uniform nanocapillary fluid cooling, highlighting the growing role of quality control, integrated management systems, and economic efficiency evaluation. It also covers vibration damping, dynamic behavior, failure probability, and strength performance methods for aviation, heterogeneous, permeable porous, and other types of materials. Gathering the best papers presented at the 4th Grabchenko’s International Conference on Advanced Manufacturing Processes (InterPartner-2022), held in Odessa, Ukraine, on September 6–9, 2022, this book offers a timely overview and extensive information on trends and technologies in manufacturing, mechanical, and materials engineering, and quality assurance. It is also intended to facilitate communication and collaboration between different groups working on similar topics and to offer a bridge between academic and industrial researchers.
