Download or read book Gas Phase Generation of Zinc Sulfide Particles Using a Single Source Precursor written by and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanometer-sized (20 to 40 nm) ZnS particles were produced in a flow reactor by gas-phase reaction of the single-source precursor Zn(S2CNEt2)2(TMEDA), where TMEDA = tetramethylethylenediamine. The precursor was prepared by reaction of the dimer, (Zn(S2CNEt2)2)2, with two equivalents of TMEDA. The product was isolated in quantitative yield and characterized by a variety of spectroscopic techniques and by single-crystal X-ray diffraction in the solid state. Transparent, colorless prisms of empirical formula C16H36N4S4Zn crystallized by cooling a warm (60 deg C), saturated toluene solution to room temperature, in the orthorhombic crystal system, space group P2(1)2(1)2(1) with unit cell dimensions a = 8.785(1) A, b = 11.611(2) A, c = 23.321(2) A, z = 4, with R = 4.64%, Rw = 5.32% for 3262 independent reflections where F> 3.0 sigma (F). The structure of Zn(S2CNEt2)2(TMEDA) was monomeric and distorted octahedral in the solid state. The precursor was evaporated into the gas phase and reacted in a hot-wall reactor at temperatures of 500, 600, and 700 deg C resulting in the formation of ZnS particles X-ray diffraction showed phase-pure ZnS particles with crystallite sizes of 15 - 25 nm at all temperature studied. Thermogravimetric analysis, elemental analysis, and transmission electron microscopy suggested that the particles also contained sulfur derived from the precursor.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1995 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Chemical Precursors to Zinc Sulfide ZnS Whisker Synthesis written by T. A. Guiton and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, Chemical Vapor Deposition (CVD) derived zinc sulfide is one of the most widely used infrared optical window materials. Unfortunately, for numerous applications it does not possess optimum mechanical properties. To fabricate infrared transmitting ZnS/ZnS composites requires the development of high aspect ratio, micron sized ZnS whiskers. Although larger ZnS single crystals and whiskers have been made by a variety of high temperature route, alternative routes have been sought for greater ZnS whisker morphology control. Low temperature organometallic routes are attractive for this purpose. The precursor compound used in this study is the known pentameric species (EtZn(SBut))5. One of the most successful routes involves the reaction of (EtZn(SBU superscript t))5 with hydrogen sulfide at ambient or sub-ambient temperature to yield a precipitate which is subsequently heated under flowing H2S at 500 C to yield a mixture of sub-micron particles and single-crystal ZnS whiskers. Transmission electron micrographs of the (EtZn(SBU superscript t))5 products indicate that the ZnS morphology is critically dependent upon the rate of H2S reaction. Corresponding x-ray/electron diffraction, electron microscopy, elemental analysis, NMR and infrared spectroscopies have been conducted. A summary of the chemical methods, product characterization results, and proposed synthesis mechanisms will be presented. Keywords: Ethyl radicals. (aw).
Download or read book Comprehensive Inorganic Chemistry II written by and published by Newnes. This book was released on 2013-07-23 with total page 7694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Inorganic Chemistry II, Nine Volume Set reviews and examines topics of relevance to today’s inorganic chemists. Covering more interdisciplinary and high impact areas, Comprehensive Inorganic Chemistry II includes biological inorganic chemistry, solid state chemistry, materials chemistry, and nanoscience. The work is designed to follow on, with a different viewpoint and format, from our 1973 work, Comprehensive Inorganic Chemistry, edited by Bailar, Emeléus, Nyholm, and Trotman-Dickenson, which has received over 2,000 citations. The new work will also complement other recent Elsevier works in this area, Comprehensive Coordination Chemistry and Comprehensive Organometallic Chemistry, to form a trio of works covering the whole of modern inorganic chemistry. Chapters are designed to provide a valuable, long-standing scientific resource for both advanced students new to an area and researchers who need further background or answers to a particular problem on the elements, their compounds, or applications. Chapters are written by teams of leading experts, under the guidance of the Volume Editors and the Editors-in-Chief. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with a ready reference resource for information in the field. The chapters will not provide basic data on the elements, which is available from many sources (and the original work), but instead concentrate on applications of the elements and their compounds. Provides a comprehensive review which serves to put many advances in perspective and allows the reader to make connections to related fields, such as: biological inorganic chemistry, materials chemistry, solid state chemistry and nanoscience Inorganic chemistry is rapidly developing, which brings about the need for a reference resource such as this that summarise recent developments and simultaneously provide background information Forms the new definitive source for researchers interested in elements and their applications; completely replacing the highly cited first edition, which published in 1973
Download or read book Nanomaterials for Medical Applications written by Zoraida Aguilar and published by Newnes. This book was released on 2012-10-10 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structurally the work is demarcated into the six most popular areas of research: (1) biocompatibility of nanomaterials with living organisms in their various manifestations (2) nanobiosensors for clinical diagnostics, detecting biomolecules which are useful in the clinical diagnosis of genetic, metabolically acquired, induced or infectious disease (3) targeted drug delivery for nanomaterials in their various modifications (4) nanomedical devices and structures which are used in the development of implantable medical devices and structures such as nanorobots (5) nanopharmacology, as novel nanoparticles are increasingly engineered to diagnose conditions and recognize pathogens, identify ideal pharmaceutical agents to treat the condition or pathogens, fuel high-yield production of matched pharmaceuticals (potentially in vivo), locate, attach or enter target tissue,
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multifunctional Oxide Based Materials From Synthesis to Application written by Teofil Jesionowski and published by MDPI. This book was released on 2019-09-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with novel aspects and perspectives in metal oxide and hybrid material fabrication. The contributions are mainly focused on the search for a new group of advanced materials with designed physicochemical properties, especially an expanded porous structure and defined surface activity. The proposed technological procedures result in an enhanced activity of the synthesized hybrid materials, which is of great importance when considering their potential fields of application. The use of such materials in different technological disciplines, including aspects associated with environmental protection, allows for the verification of the proposed synthesis method. Thus, it can be stated that those aspects are of interdisciplinary character and may be located at the interface of three scientific disciplines—chemistry, materials science, and engineering—as well as environmental protection. Furthermore, the presented scientific scope is in some way an answer to the continuous demand for such types of materials and opens new perspectives for their practical use
Download or read book Handbook of Nanomaterials for Industrial Applications written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2018-07-19 with total page 1143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Nanomaterials for Industrial Applications explores the use of novel nanomaterials in the industrial arena. The book covers nanomaterials and the techniques that can play vital roles in many industrial procedures, such as increasing sensitivity, magnifying precision and improving production limits. In addition, the book stresses that these approaches tend to provide green, sustainable solutions for industrial developments. Finally, the legal, economical and toxicity aspects of nanomaterials are covered in detail, making this is a comprehensive, important resource for anyone wanting to learn more about how nanomaterials are changing the way we create products in modern industry. - Demonstrates how cutting-edge developments in nanomaterials translate into real-world innovations in a range of industry sectors - Explores how using nanomaterials can help engineers to create innovative consumer products - Discusses the legal, economical and toxicity issues arising from the industrial applications of nanomaterials
Download or read book Acid Precipitation written by and published by . This book was released on 1984 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of the Interior and Related Agencies Appropriations for Fiscal Year 1994 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on the Department of the Interior and Related Agencies and published by . This book was released on 1994 with total page 1726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of the Interior and Related Agencies Appropriations for Fiscal Year 1994 Department of Agriculture Energy Health and Human Services Interior Smithsonian Institution written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on the Department of the Interior and Related Agencies and published by . This book was released on 1994 with total page 1620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1967-11 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoscience written by Neerish Revaprasadu and published by Royal Society of Chemistry. This book was released on 2020-05-20 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of nanoscience continues to grow and, with such a vast landscape of material, careful distillation of the most important discoveries will help researchers find the key information they require. Nanoscience provides a critical and comprehensive assessment of the most recent research and opinion from across the globe. Topics covered in this volume include metal halide perovskite nanomaterials, properties and applications, nanoparticles and nanocomposites for new permanent magnets and graphene-based materials for energy conversion applications. Anyone practising in any nano-allied field, or wishing to enter the nano-world will benefit from this resource, presenting the current thought and applications of nanoscience.
Download or read book Nanomaterials via Single Source Precursors written by Allen W. Apblett and published by Elsevier. This book was released on 2022-02-19 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials via Single-Source Precursors: Synthesis, Processing and Applications presents recent results and overviews of synthesis, processing, characterization and applications of advanced materials for energy, electronics, biomedicine, sensors and aerospace. A variety of processing methods (vapor, liquid and solid-state) are covered, along with materials, including metals, oxides, semiconductor, sulfides, selenides, nitrides, and carbon-based materials. Production of quantum dots, nanoparticles, thin films and composites are described by a collection of international experts. Given the ability to customize the phase, morphology, and properties of target materials, this "rational approach to synthesis and processing is a disruptive technology for electronic, energy, structural and biomedical (nano)materials and devices. The use of single-source chemical precursors for materials processing technology allows for intimate elemental mixing and hence production of complex materials at temperatures well below traditional physical methods and those involving direct combination of elements. The use of lower temperatures enables thin-film deposition on lightweight polymer substrates and reduces damage to complex devices structures such as used in power, electronics and sensors. - Discusses new approaches to synthesis or single-source precursors (SSPs) and the concept of rational design of materials - Includes materials processing of SSPs in the design of new materials and novel devices - Provides comprehensive coverage of the subject (materials science and chemistry) as related to SSPs and the range of potential applications
Download or read book Photovoltaic Fundamentals written by Gary Cook and published by . This book was released on 1991 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
