Download or read book A Simple Approach for Producing Colloidal Noble Metal Nanocrystals written by Kevin McCann and published by . This book was released on 2013 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Noble Metal Nanoparticles written by Ignác Capek and published by Springer. This book was released on 2017-07-20 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader the chemistry of reaction approaches by which noble metal nanoparticles are synthesized, including synthetic approaches using the Brust–Schiffrin method , a high-temperature solution-phase synthesis, polymer and biological entities, weak and strong reducing and capping agents, the low and high temperatures, various additives and various novel approaches such as plasma, ionic liquids, UV light and gamma rays and others. This book starts with a brief overview of foundation work concerned with the chapter topics such as nanomaterials, nanoscience, surface-capping molecules, traditional and nontraditional reduction agents, In addition, chemical and physical properties of noble metal nanoparticles with different structures and elements such as monolayered clusters, nanorods, and bimetallic nanoparticles are described comprehensively. The aim is to summarize the fundamentals and mechanistic approaches in the preparation and characterization of metal colloidal nanoparticles and dispersions. In this way the reader is provided with a systematic and coherent picture of the interesting field of nanoscience based on noble metal colloidal nanoparticles. Intended as a wide-ranging overview, the book is a resource for novices in the field as well as for specialists, particularly those scientists working in the area of nanoparticle synthesis. Nanoscience and nanotechnology are discussed from the chemist’s point of view. Therefore, this volume describes in detail the terms, definitions, theories, experiments, and techniques dealing with the synthesis of noble metal nanoparticles. The material presented here is essential reading for research chemists, technologists, and engineers in the fields of specialty nanomaterials and metal industries, and also is highly valuable for researchers in university, institutional, and governmental laboratories, especially for those at advanced stages of their careers.
Download or read book Noble metal Nanoparticles Produced with Colloidal Lithography written by Noelia Laura Bocchio and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomimetic Synthesis of Noble Metal Nanocrystals written by Chin-Yi Chiu and published by . This book was released on 2013 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the nanometer scale, the physical and chemical properties of materials heavily depend on their sizes and shapes. This fact has triggered considerable efforts in developing controllable nanomaterial synthesis. The controlled growth of colloidal nanocrystal is a kinetic process, in which high-energy facets grow faster and then vanish, leading to a nanocrystal enclosed by low-energy facets. Identifying a surfactant that can selectively bind to a particular crystal facet and thus lower its surface energy, is critical and challenging in shape controlled synthesis of nanocrystals. Biomolecules exhibiting exquisite molecular recognition properties can be exploited to precisely engineer nanostructured materials. In the first part of my thesis, we employed the phage display technique to select a specific multifunctional peptide sequence which can bind on Pd surface and mediate Pd crystal nucleation and growth, achieving size controlled synthesis of Pd nanocrystals in aqueous solution. We further demonstrated a rational biomimetic approach to the predictable synthesis of nanocrystals enclosed by a particular facet in the case of Pt. Specifically, Pt {100} and Pt {111} facet-specific peptides were identified and used to synthesize Pt nanocubes and Pt nano-tetrahedrons, respectively. The mechanistic studies of Pt {111} facet-specific peptide had led us to study the facet-selective adsorption of aromatic molecules on noble metal surfaces. The discoveries had achieved the development of design strategies to select facet-selective molecules which can synthesize nanocrystals with expected shapes in both Pt and Pd system. At last, we exploited Pt facet-specific peptides and controlled the molecular interaction to produce one- and three- dimensional nanostructures composed of anisotropic nanoparticles in synthetic conditions without supramolecular pre-organization, demonstrating the full potential of biomolecules in mediating material formation process. My research on biomimetic synthesis of nanocrystals with shape control and nanostructures with control over the anisotropy are unprecedented, representing a step forward in achieving the goal of producing complex nanostructures with required properties. The fundamental studies on the biomolecule-inorganic interfaces have contributed to advancing the synthesis tool of colloidal nanomaterials and enriching understating of organic-inorganic interface, impacting many applications.
Download or read book Colloidal Synthesis of Plasmonic Nanometals written by Luis Liz-Marzán and published by CRC Press. This book was released on 2020-04-23 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noble metal nanoparticles have attracted enormous scientific and technological interest because of their unique optical properties, which are related to surface plasmon resonances. The interest in nanosized metal particles dates back to ancient societies, when metals were used in various forms as decorative elements. From the famous Lycurgus cup, made by the Romans in the 4th century AD, through thousands of stained glasses in churches and cathedrals all over medieval Europe, bright-yellow, green, or red colors have been obtained by a touch of metallic additions during glass blowing. This peculiar interaction of light with nanometals can be widely tuned through the morphology and assembly of nanoparticles, thereby expanding the range of potential applications, from energy and information storage to biomedicine, including novel diagnostic and therapeutic methods. This book compiles recent developments that clearly illustrate the state of the art in this cutting-edge research field. It comprises different review articles written by the teams of Prof. Luis Liz-Marzán, an international leader in chemical nanotechnology who has made seminal contributions to the use of colloid chemistry methods to understand and tailor the growth of metal particles at the nanoscale. Apart from synthesis, the book also describes in detail the plasmonic properties of nanomaterials and illustrates some representative applications. This book will appeal to anyone involved in nanotechnology, nanocrystal growth, nanoplasmonics, and surface-enhanced spectroscopies.
Download or read book Crystallization and Growth of Colloidal Nanocrystals written by Edson Roberto Leite and published by Springer Science & Business Media. This book was released on 2011-11-17 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the size, shape, and microstructure of nanocrystalline materials strongly impact physical and chemical properties, the development of new synthetic routes to nanocrystals with controlled composition and morphology is a key objective of the nanomaterials community. This objective is dependent on control of the nucleation and growth mechanisms that occur during the synthetic process, which in turn requires a fundamental understanding of both classical nucleation and growth and non-classical growth processes in nanostructured materials. Recently, a novel growth process called Oriented Attachment (OA) was identified which appears to be a fundamental mechanism during the development of nanoscale materials. OA is a special case of aggregation that provides an important route by which nanocrystals grow, defects are formed, and unique—often symmetry-defying—crystal morphologies can be produced. This growth mechanism involves reversible self-assembly of primary nanocrystals followed by reorientation of the assembled nanoparticles to achieve structural accord at the particle-particle interface, the removal of adsorbates and solvent molecules, and, finally, the irreversible formation of chemical bonds to produce new single crystals, twins, and intergrowths. Crystallization and Growth of Colloidal Nanocrystals provides a current understanding of the mechanisms related to nucleation and growth for use in controlling nanocrystal morphology and physical-chemical properties, and is essential reading for any chemist or materials scientist with an interest in using nanocrystals as building blocks for larger structures. This book provides a compendium for the expert reader as well as an excellent introduction for advanced undergraduate and graduate students seeking a gateway into this dynamic area of research.
Download or read book Metal Nanoclusters in Catalysis and Materials Science The Issue of Size Control written by Benedetto Corain and published by Elsevier. This book was released on 2011-08-11 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control deals with the synthesis of metal nanoclusters along all known methodologies. Physical and chemical properties of metal nanoclusters relevant to their applications in chemical processing and materials science are covered thoroughly. Special attention is given to the role of metal nanoclusters size and shape in catalytic processes and catalytic applications relevant to industrial chemical processing.An excellent text for expanding the knowledge on the chemistry and physics of metal nanoclusters. Divided in two parts; Part I deals with general aspects of the matter and Part II has to be considered a useful handbook dealing with the production of metal nanoclusters, especially from their size-control point of view. * Divided into two parts for ease of reference: general and operational * Separation of synthetic aspects, physical properties and applications* Specific attention is given to the task of metal nanoclusters size-control
Download or read book Colloidal Semiconductor Nanocrystals Synthesis Properties and Applications written by Vladimir Lesnyak and published by Frontiers Media SA. This book was released on 2020-01-06 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colloidal Synthesis of Plasmonic Nanometals written by Luis Liz-Marzán and published by CRC Press. This book was released on 2020-04-23 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noble metal nanoparticles have attracted enormous scientific and technological interest because of their unique optical properties, which are related to surface plasmon resonances. The interest in nanosized metal particles dates back to ancient societies, when metals were used in various forms as decorative elements. From the famous Lycurgus cup, made by the Romans in the 4th century AD, through thousands of stained glasses in churches and cathedrals all over medieval Europe, bright-yellow, green, or red colors have been obtained by a touch of metallic additions during glass blowing. This peculiar interaction of light with nanometals can be widely tuned through the morphology and assembly of nanoparticles, thereby expanding the range of potential applications, from energy and information storage to biomedicine, including novel diagnostic and therapeutic methods. This book compiles recent developments that clearly illustrate the state of the art in this cutting-edge research field. It comprises different review articles written by the teams of Prof. Luis Liz-Marzán, an international leader in chemical nanotechnology who has made seminal contributions to the use of colloid chemistry methods to understand and tailor the growth of metal particles at the nanoscale. Apart from synthesis, the book also describes in detail the plasmonic properties of nanomaterials and illustrates some representative applications. This book will appeal to anyone involved in nanotechnology, nanocrystal growth, nanoplasmonics, and surface-enhanced spectroscopies.
Download or read book Synthesis and in Vivo Biomedical Applications of Ultrasmall Metal Nanoparticles written by Shahab Ranjbar Bahadori and published by . This book was released on 2022 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, metal-based nanoparticles (MNPs) have gained much popularity in the field of nanomedicine owing to their exceptional physiochemical properties. Easy surface functionalization and conjugation with therapeutic moieties, stability, inertness, and inherent anticancer activities make MNPs promising diagnostic and therapeutic agents. Among different sizes of MNPs, which greatly affect their biodistribution and clearance, ultrasmall metal nanoparticles with the size less than 5 nm demonstrate unique pharmacokinetic properties, making them suitable for nanomedicinal applications. Therefore, many efforts have been made to synthesize various kinds of ultrasmall metal nanoparticles. In this study, a revolutionary synthesis method, termed as liquid diffusion synthesis (LDS) was developed to produce ultrasmall metal nanoparticles. In this new approach, simply immersing a dialysis bag containing an aqueous solution of a metal salt mixed with citric acid in a NaOH solution reservoir for tens of minutes, few-nm sized nanoparticles form inside the dialysis bag. Not only is this process exceptionally simple and cost effective, conducting at room temperature using aqueous solution of metal salt, citric acid and NaOH, but also it can produce a wide range of colloidal nanocrystals, covering all possible ultrasmall metal nanocrystals used as nanomedicine. Using this method, the synthesis of ultrasmall metal nanocrystals of Co, Ni, Cu, Au, Ag, Pd, Pt, and Lu have been demonstrated. Also, ultrasmall metal oxide nanoparticles can be produced using the same method. Ultrasmall nanoparticles of MnO, RuO2, Cu2O, FeO, ZnO2, and CeO2 have been synthesized. A mechanistic study was conducted to reveal the nanoparticle formation mechanism. It was found that the gradual change of the solution pH caused by the diffusion of OH- ions through the dialysis membrane played an essential role in the formation of these nanocrystals. Synthesized ultrasmall Cu nanoparticles have preliminarily been tested for its in vivo biomedical applications. It shows that Cu nanoparticles are stable in phosphate-buffered saline and fatal bovine serum. In vivo studies shows the renal clearability of Cu nanoparticles; about 67% of nanoparticles is excreted via urine after 48 hours of injection.
Download or read book Biomimetic Synthesis of Noble Metal Nanocrystals and the Mechanism Studies written by Lingyan Ruan and published by . This book was released on 2014 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials with dimensions reaching the nanoscale possess novel properties different from their bulk counterparts. Engineering nanomaterials to exploit their improved functions show important applications in catalysis, electrocatalysis, electronics, optoelectronics, and energy devices. One of the challenges to date is to develop methods for producing nanomaterials in a controllable and predictable fashion. We seek to develop novel biomimetic synthetic protocols for programmable nanomaterial synthesis, i.e., using biomolecules with specific material recognition properties to manipulate nanomaterial morphologies and structures. Starting with three Pt binding peptides with distinct recognition properties, i.e., a Pt material specific peptide BP7A and two Pt facet specific peptides T7 (Pt {100} facet specific) and S7 (Pt {111} facet specific), we demonstrate a rational creation of Pt bipyramids, a new type of shape for Pt nanocrystals. The BP7A peptide is found to be able to introduce twinning during Pt nanocrystal growth. We use it to generate single twinned seeds for Pt nanocrystals. Together with targeted facet stabilization using T7/S7 peptides, Pt {100} bipyramid and {111} bipyramid are successfully synthesized for the first time. We further utilize the twin introducing property of the BP7A peptide to generate ultrathin Pt nanowire with high twin densities. We show that the Pt nanowire possesses higher electrocatalytic activity and durability in oxygen reduction and methanol oxidation reactions due to its one-dimensional nanostructure and the presence of dense twin defects, demonstrating the concept of defect engineering in nanocrystals as a strategy in the design of novel electrocatalyst. The organic-inorganic interface is a key issue in many fields including colloidal syntheses and biomimetics, the understanding of which can enable the design of new material synthetic strategies. We aim to understand how the Pt binding peptides modulate the formations of specific Pt nanostructures. We start with mechanistic investigations on S7 peptide's Pt {111} recognition property, and proceed to studying BP7A peptide's twin introducing property. With combined experimental and computational efforts, we identify the molecular origins of the biorecognition properties of these two peptides. Moreover, we extend extracted biomimetic principles to the rational design/selection of small organic molecules that deliver anticipated traits for controlled colloidal synthesis for other noble metals (Pd and Rh). Overall, we demonstrate the power of biomimetic synthesis in rationally creating nanomaterial structures with novel properties. Our mechanism studies demonstrate the rich information one can derive from biomimetic synthesis, and the broad applicability of biomimetic principles to engineering material structures for many potential applications.
Download or read book Noble Metal Based Nanocomposites written by Jun Yang and published by John Wiley & Sons. This book was released on 2019-06-10 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a systematic and coherent picture of the solution-based methods for the preparation of noble metal-based composite nanomaterials, their characterization, and potential applications in electrocatalysis Within the last decade, the development of wet-chemistry methods has led to the blossom of research in composite nanomaterials. However, the design and synthesis of composite nanomaterials with controlled properties remains a significant challenge. This book summarizes the solution-based methods for the preparation of noble metal-based composite nanomaterials. It examines their characterization, as well as their use in electrocatalysis. It also discusses the intrinsic relationship between the catalytic properties and the physical /chemical effects in the composite materials, and offers some perspectives for the future development of metal-based composite nanomaterials. In addition, the book not only provides a systematic and coherent picture of this field, but also inspires rethinking of the current processing technologies. Noble Metal-Based Nanocomposites: Preparation and Applications offers in-depth chapter coverage of ethanol-mediated phase transfer of metal ions and nanoparticles. It presents the full range of nanocomposites consisting of chalcogenide semiconductors and gold, silver sulfide, or other noble metals. It also examines core-shell structured cadmium selenide-platinum nanocomposites; Pt-containing Ag2S-noble metal nanocomposites for direct methanol fuel cells operated at high fuel concentrations; and nanocomposites consisting of metal oxides and noble metals. In addition, the book looks at scientific issues derived from noble metal-based nanocomposites. -Covers all of the preparations of noble metal-based nanocomposites and their numerous applications -Highlights some of the recent breakthroughs in the design, engineering, and applications of noble metal-based nanocomposites -Appeals to a wide range audience, especially researchers in the areas of catalysis, chemistry, chemical engineering, materials synthesis and characterization, and fuel cell Noble Metal-Based Nanocomposites: Preparation and Applications is an excellent book for inorganic chemists, materials scientists, catalytic chemists, chemical engineers, and those interested in the subject.
Download or read book Complex shaped Metal Nanoparticles written by Tapan K. Sau and published by John Wiley & Sons. This book was released on 2012-08-07 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past few years have witnessed the development of non-spherical metal nanoparticles with complex morphologies, which offer tremendous potential in materials science, chemistry, physics and medicine. Covering all important aspects and techniques of preparation and characterization of metal nanoparticles with controlled morphology and architecture, this book provides a sound overview - from the basics right up to recent developments. Renowned research scientists from all over the world present the existing knowledge in the field, covering theory and modeling, synthesis and properties of these nanomaterials. By emphasizing the underlying concepts and principles in detail, this book enables researchers to fully recognize the future research scope and the application potential of the complex-shaped metal nanoparticles, inspiring further research in this field.
Download or read book DNA Engineered Noble Metal Nanoparticles written by Ignác Capek and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing interest in the use of nanoparticles modified with DNAs, viruses, peptides and proteins for the rational design of nanostructured functional materials and their use in biosensor applications. The challenge is to control the organization of biomolecules on nanoparticles while retaining their biological activity as potential chemical and gene therapeutics. These noble metal nanoparticles/biomolecules conjugates have specific properties and therefore they are attractive materials for nanotechnology in biochemistry and medicine. In this book, the author review work performed dealing with the DNA structure and functionalities, interactions between DNA, noble metal nanoparticles, surface active agents, solvents and other additives. Particular attention is given to how the DNA's chain length and the DNA conformation affect the interaction and structure of the nanoconjugates and nanostructures that are formed. Also discussed are the recent advances in the preparation, characterization, and applications of noble metal nanoparticles that are conjugated with DNA aptamers and oligomers. The advantages and disadvantages of functionalized nanoparticles through various detection modes are highlighted, including colorimetry, fluorescence, electrochemistry, SPR, and, mass spectrometry for the detection of small molecules and biomolecules. The functionalized noble metal nanoparticles are selective and sensitive for the analytes, showing their great potential in biosensing. Furthermore, this book reviews recent progress in the area of DNA-noble metal nanoparticles based artificial nanostructures, that is, the preparation, collective properties, and applications of various DNA-based nanostructures are also described.
Download or read book Materials for Hydrogen Production Conversion and Storage written by Inamuddin and published by John Wiley & Sons. This book was released on 2023-02-09 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: MATERIALS FOR HYDROGEN PRODUCTION, CONVERSION, AND STORAGE Edited by one of the most well-respected and prolific engineers in the world and his team, this book provides a comprehensive overview of hydrogen production, conversion, and storage, offering the scientific literature a comprehensive coverage of this important fuel. Continually growing environmental concerns are driving every, or almost every, country on the planet towards cleaner and greener energy production. This ultimately leaves no option other than using hydrogen as a fuel that has almost no adverse environmental impact. But hydrogen poses several hazards in terms of human safety as its mixture of air is prone to potential detonations and fires. In addition, the permeability of cryogenic storage can induce frostbite as it leaks through metal pipes. In short, there are many challenges at every step to strive for emission-free fuel. In addition to these challenges, there are many emerging technologies in this area. For example, as the density of hydrogen is very low, efficient methods are being developed and engineered to store it in small volumes. This groundbreaking new volume describes the production of hydrogen from various sources along with the protagonist materials involved. Further, the extensive and novel materials involved in conversion technologies are discussed. Also covered here are the details of the storage materials of hydrogen for both physical and chemical systems. Both renewal and non-renewal sources are examined as feedstocks for the production of hydrogen. The non-renewal feedstocks, mainly petroleum, are the major contributor to date but there is a future perspective in a renewal source comprising mainly of water splitting via electrolysis, radiolysis, thermolysis, photocatalytic water splitting, and biohydrogen routes. Whether for the student, veteran engineer, new hire, or other industry professionals, this is a must-have for any library.
Download or read book Advances in Nanotheranostics I written by Zhifei Dai and published by Springer. This book was released on 2015-12-15 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the recent advances in nanotheranostics from basic research to potential applications, and discusses the modular design and engineering of multiplex nanoparticles including gold nanostructures, luminescent nanoparticles, dendrimers and liposomes. Each chapter demonstrates multifunctional nanoparticles with topics covering targeting, imaging, delivery, diagnostics, and therapy as new modalities for cancer theranostics. This comprehensive book presents expert views on the latest developments in theranostic nanomedicine. It focuses on potential theranostic applications of multifunctional nanoparticles ranging from identifying noninvasively cancer cells by molecular detection, and visualizing in vivo drug delivery by means of contrast enhanced imaging, to destroying cancer cell s with minimal side effects via selective accumulation at tumor sites, and real-time monitoring therapeutic effectiveness. It also presents an interdisciplinary survey of nanotheranostics and as such is a valuable resource for researchers and students in related fields. Zhifei Dai is a Professor at the Department of Biomedical Engineering, College of Engineering, Peking University, China.
