Download or read book Synthesis and Characterization of Metal Chalcogenide MQ2 nanoparticles written by Nicole Christin Zink and published by . This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Metal Chalcogenide and Metal Oxide Nanostructures written by Ka Yee Chick and published by . This book was released on 2008 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Chalcogenide Nanostructures for Renewable Energy Applications written by Ahsanulhaq Qurashi and published by John Wiley & Sons. This book was released on 2014-12-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first ever reference book that focuses on metal chalcogenide semiconductor nanostructures for renewable energy applications encapsulates the state-of-the-art in multidisciplinary research on the metal chalcogenide semiconductor nanostructures (nanocrystals, nanoparticles, nanorods, nanowires, nanobelts, nanoflowers, nanoribbons and more). The properties and synthesis of a class of nanomaterials is essential to renewable energy manufacturing and this book focuses on the synthesis of metal chalcogendie nanostructures, their growth mechanism, optical, electrical, and other important properties and their applications in different diverging fields like photovoltaics, hydrogen production, theromelectrics, lithium battery, energy storage, photocatalysis, sensors. An important reference source for students, scientists, engineers, researchers and industrialists working on nanomaterials-based energy aspects associated with chemistry, physics, materials science, electrical engineering, energy science and technology, and environmental science.

Download or read book Thiourea urea Metal Cd Ni Chalcogenide O S Complexes for the Synthesis and Characterization of Metal Chalcogenide Nanoparticles written by and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of the fundamental properties and potential use of semiconductor materials in nanotechnology has stimulated the interest of many researchers. Coordination compounds containing ligands with chalcogenide atoms as donors have received considerable attention. Among these chalcogenide ligands, thiourea and urea have been extensively used previously to form single source precursors for the synthesis of group II–VI semiconductor nanoparticles. The synthesis and study of semiconductor nanocrystals has become a subject area of considerable research interest because they have potentially useful applications such as biomedical imaging, sensing, light-emitting diodes (LEDs), photovoltaics and displays.

Download or read book Chalcogenide Based Nanomaterials as Photocatalysts written by Mohammad Mansoob Khan and published by Elsevier. This book was released on 2021-04-07 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chalcogenide-Based Nanomaterials as Photocatalysts deals with the different types of chalcogenide-based photocatalytic reactions, covering the fundamental concepts of photocatalytic reactions involving chalcogenides for a range of energy and environmental applications. Sections focus on nanostructure control, synthesis methods, activity enhancement strategies, environmental applications, and perspectives of chalcogenide-based nanomaterials. The book offers guidelines for designing new chalcogenide-based nanoscale photocatalysts at low cost and high efficiency for efficient utilization of solar energy in the areas of energy production and environment remediation. Provides information on the development of novel chalcogenide-based nanomaterials Outlines the fundamentals of chalcogenides-based photocatalysis Includes techniques for heterogeneous catalysis based on chalcogenide-based nanomaterials

Download or read book Synthesis and Characterization of New Mixed metal Chalcogenides and Oxychalcogenides written by Theodore Dennis Brennan and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Chalcogenide Nanocomposites written by Mohammad Ehtisham Khan and published by Elsevier. This book was released on 2023-12-01 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-chalcogenides have exceptional properties and can be used for electronic devices, environmental monitoring, and sensing applications, for energy storage, as electrode materials, in fuel cells, membranes and for photocatalytic degradation of environmental pollutants in the field of waste-water treatment applications. Metal-Chalcogenide Nanocomposites: Fundamentals, Properties, and Industrial Applications focuses on metal chalcogenide nanomaterials for environmental remediation and corrosion applications. The chapters focuses on cost-effective and facile fabrication approaches, their growth mechanisms, optical, electrical, and other important properties and their applications in a broad range of diverse fields such as photocatalysis, photovoltaics, hydrogen production, lithium batteries, energy storage, anticorrosion, and sensor devices. The book will be an important information source for both material scientists and engineers who want to create the next generation of products and devices for energy and environmental applications. Covers fabrication, standard characterization, photocatalytic mechanisms, and environmentally-sustainable fabrication methods Applications covered include environmental, electronics, oil, gas, water treatment, sensing, and many more Includes challenges and future opportunities, which are discussed in detail

Download or read book New Transitional Metal Chalcogenides written by Douglas A. Keszler and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of New Low Dimensional Transition Metal Chalcogenides written by Steven Arthur Sunshine and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microbial Synthesis of Chalcogenide Nanoparticles written by Joyabrata Mal and published by CRC Press. This book was released on 2018-04-27 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen a growing interest in the application of chalcogenide nanoparticles (NPs), e.g. Se, Te, CdSe and CdTe NPs, in various industrial sectors including energy, petroleum refining and in the field of biology and medicine. Moreover, due to the high toxicity of chalcogen oxyanions, their release into the environment is of great concern. Thus, emphasis was given in this study on the development of a novel microbial synthesis process of chalcogenide NPs by combining biological treatment of Se/Te containing wastewaters with biorecovery in the form of Se NPs, Te NPs and CdSe NPs. Enrichment of Se-oxyanion reducing microorganisms was carried out to simultaneously remove selenite (Se(IV)) and cadmium (Cd(II)) from wastewaters by combining bioremediation of toxic Se-rich wastewater with the biorecovery of Se as CdSe NPs. The results showed compositional changes in the extracellular polymeric substances (EPS) matrix of the anaerobic granular sludge upon exposure to Cd(II) and Se(IV) and identified the roles of EPS fractions in the biogenesis of CdSe NPs. Besides, it was found that the EPS on the surface of the biogenic Se NPs play a major role in lowering the bioavailability and toxicity of biogenic Se(0) compared to chemogenic Se(0) NPs. An upflow anaerobic sludge blanket (UASB) reactor was used for the first time to continuously remove tellurite from wastewater and recover biogenic Te(0).

Download or read book Synthesis and Characterization of Transition Metal Oxide and Chalcogenide Nanostructures written by Jeffrey James Urban and published by . This book was released on 2004 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Synthesis and Characterization of Novel Semiconducting Metal Chalcogenides with Multifunctional Properties written by and published by . This book was released on 2008 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal chalcogenides possess a wide range of interesting chemical and physical properties, including low-temperature superconductivity, semiconductivity, ionic conductivity, intercalation, and optical properties. To expand chalcogenides beyond their traditional applications, it is desirable to generate novel chalcogenide materials with multifunctionality for uses in the areas of catalysis, separation, ion exchange, and gas storage by modifying the framework architectures and tuning the chemical components. The primary focus of my Ph. D. study is to design and synthesize chalcogenide materials with new structures and interesting multifunctional properties. The large variety of chemical compositions and structures make it possible to tune the properties, such as band gap, luminescence, pore size, surface area, and thermal stability. Most of the synthesis has been carried out using solvothermal reactions refs in pyrex tube or teflon lined autoclaves. Novel three-dimensional (3D) microporous chalcogenides constructed on building units [M-Sn-Q]n- (M=Zn, Cd, Mn; Q=S, Se) have been obtained. Their structures have been characterized by both single crystal and powder X-ray diffraction methods. Optical diffuse reflectance experiments have indicated that these compounds are semiconductors with intermediate band gaps between 1.5~2.9eV. The successful doping/substitution of 5%~20% Mn and Se in the [Zn-Sn-S]n- structure allows systematic tuning of the band gap and optical properties of this semiconductor compound. All compounds show a high thermal stability over 400°C. Our studies also show that the guest molecules and cations residing in the open frameworks are exchangeable. Another novel two dimentional ion sulfide [Fe(en)3]·[Fe16S20]·en compound was synthesized as well. UV-Vis reflectance spectroscopy showed a very low absorption coefficient and small band gap ~0.5eV. Doping/substitution experiments with Co and Mn replacing Fe were carried out and the properties will be discussed. In summary, this work has provided examples of rational synthesis and property tuning of new functional materials with new structure types, and demonstrated structure-property correlation in metal chalcogenide based compounds. It has provided useful information for the future developments of material synthesis with desired multifunctionality.

Download or read book Synthesis and Characterization of Copper Based Ternary Metal Chalcogenides written by Jose Javier Sanchez Rodriguez and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current climate crisis is a great concern to humankind due to the devastating effects of the consistent rise of anthropogenic greenhouse gases. A viable alternative to reducing greenhouse gas emissions is the development of solar harvesting technologies. The need to develop new semiconductor materials with more capacity to absorb light and convert it into electricity is rapidly growing. A promising class of materials for this purpose are copper-based ternary chalcogenides such as CuCrS2, CuSb1-xBixS2, and Cu3VS4.The synthesis and characterization of copper-based ternary chalcogenides nanocrystals (NCs) have gained popularity in the scientific community due to their novel, physical, chemical, optical, electronic, magnetic, and mechanical properties. NCs can be precursors to the next-generation nanoparticle-based thin film solar cells. This generation of thin film solar cells is advantageous in terms of the compounding benefits. Materials in the forms of NCs offer size, and morphology-dependent properties, high absorption coefficients, and tunable bandgaps. Nanoparticle-based thin film solar cells use very thin layers of material, lowering their production cost while making the systems flexible, more efficient, and compatible with new and existing infrastructure.This dissertation addresses several challenging issues and realizes the successful fabrication of novel CuCrS2, CuSb1-xBixS2 (x=1, 0.18), and Cu3VS4 NCs-based thin films. These systems were synthesized using two different thermal decomposition methods: heat-up (HU) and hot-injection (HI). This dissertation presents a detailed study involving the synthesis and characterization of the above-mentioned semiconductors by applying the developed nano-to-thin film approach. Their optical and electrical properties were explored, and their respective optical bandgaps were determined using UV-vis and electron energy loss spectroscopy (EELS). The ability of the fabricated thin films to generate a photocurrent under sunlight irradiation was explored, reporting their responsivities and current conversion efficiencies.

Download or read book Synthesis and Characterization of Copper Chalcogenide Nanoparticles and Their Use in Solution Processed Photovoltaics written by Pierre Mubiayi Kalenga and published by . This book was released on 2015 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simple Chemical Routes for Changing Composition Or Morphology in Metal Chalcogenide Nanomaterials written by Stacey Elaine Wark and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal chalcogenide nanomaterials are interesting due to their size dependent properties and potential use in numerous types of devices or applications. The synthetic methods of binary phase metal chalcogenide nanoparticles are well established, but finding simple ways to make even more complex nanostructures is important. To this end, two techniques were studied: the cation exchange of metal chalcogenide nanocrystals, CdE 2!MxEy (E = S, Se, Te; M = Pd, Pt) and the solution phase synthesis of ternary chalcogenide nanoparticles. The effects of cation solvation and the volume change ([Delta] V) of reaction on the equilibrium and the morphology change in the cation-exchange reactions of CdE 2!MxEy were investigated. A two-phase solvent environment was particularly efficient in increasing the thermodynamic driving force. The effect of [Delta] V of reaction on the morphology of the product nanocrystals was also investigated. Depending on the stress developed in the lattice during the reaction, product nanocrystals underwent varying degrees of morphological changes, such as void formation and fragmentation, in addition to the preservation of the original morphology of the reactant nanocrystals. The knowledge of the effect of ion solvation and [Delta] V of reaction on the equilibrium and product morphology provides a new strategy and useful guide to the application of cation-exchange reactions for the synthesis of a broader range of inorganic nanocrystals. Using a solution phase method, the morphology of CuInSe2 nanoparticles could be tuned from small 10 nm spheres to micron length nanowires by varying the relative amount of strong and weak surfactants passivating the surface. Oleylamine and trioctylphosphine oxide were chosen as the strong and weak surfactants, respectively. Small isotropic structures were formed when the oleylamine was the only surfactant with the size of the nanospheres increasing as the amount of oleylamine decreased. For the CuInSe2 nanowires, weakly-binding dioctylphosphine oxide (DOPO), an impurity in the TOPO, was found to be the key surfactant that enables the anisotropic one-dimensional growth. Detailed analysis of the structure of the nanowires indicated that they grow perpendicular to (112) planes, with twinning around the growth axis by ~60° rotation. The nanowires exhibit a saw-tooth surface morphology resembling a stack of truncated tetrahedral.

Download or read book Solution Synthesis of Mixed Metal Chalcogenide Nanoparticles and Spray Deposition of Precursor Films written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low dimensional Transition Metal Chalcogenides written by Juliane Stahl and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: