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Nanostructured Vanadium Oxides
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Book Synopsis Nanostructured Vanadium Oxides by : Sediri Faouzi
Download or read book Nanostructured Vanadium Oxides written by Sediri Faouzi and published by LAP Lambert Academic Publishing. This book was released on 2015-05-25 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis and the characterization of new inorganic and/or hybrid organic-inorganic nanomaterials have been the subject of many research projects with high technological impact. Among these nanostructured vanadium oxides, as cathode and electrochromic materials, seem good candidates for use in such devices, with their open crystal structures and their electrochemical performances. However, industrial applications require simple and inexpensive methods of synthesis. Thus, the hydrothermal method (soft chemistry) has been used for the synthesis of vanadium oxides nanomaterials with high purity and cristallinity. The correlation of electrochemical and electrochromic performances with structural and morphological properties could leads to original applications such as electrochromic displays.
Book Synopsis Synthesis and Characterization of Novel Micro- and Nanostructured Vanadium, Molybdenum, and Iron Oxides by : Markus Josef Niederberger
Download or read book Synthesis and Characterization of Novel Micro- and Nanostructured Vanadium, Molybdenum, and Iron Oxides written by Markus Josef Niederberger and published by . This book was released on 2000 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Novel Micro- and Nanostructured Vanadium, Molybdenum, and Iron Oxides by : Markus Niederberger (Chemiker)
Download or read book Synthesis and Characterization of Novel Micro- and Nanostructured Vanadium, Molybdenum, and Iron Oxides written by Markus Niederberger (Chemiker) and published by . This book was released on 2000 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanostructured Thin Films by : Maria Benelmekki
Download or read book Nanostructured Thin Films written by Maria Benelmekki and published by Elsevier. This book was released on 2019-08-25 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured Thin Films: Fundamentals and Applications presents an overview of the synthesis and characterization of thin films and their nanocomposites. Both vapor phase and liquid phase approaches are discussed, along with the methods that are sufficiently attractive for large-scale production. Examples of applications in clean energy, sensors, biomedicine, anticorrosion and surface modification are also included. As the applications of thin films in nanomedicine, cell phones, solar cell-powered devices, and in the protection of structural materials continues to grow, this book presents an important research reference for anyone seeking an informed overview on their structure and applications. Shows how thin films are being used to create more efficient devices in the fields of medicine and energy harvesting Discusses how to alter the design of nanostructured thin films by vapor phase and liquid phase methods Explores how modifying the structure of thin films for specific applications enhances their performance
Book Synopsis Synthesis and Characterization of Vanadium Oxide Based Nanostructured Materials and Their Application for Catalytic Oxidative Dehydration of Propane by : Sangita Deb
Download or read book Synthesis and Characterization of Vanadium Oxide Based Nanostructured Materials and Their Application for Catalytic Oxidative Dehydration of Propane written by Sangita Deb and published by . This book was released on 2008 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices by : Vijay B. Pawade
Download or read book Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices written by Vijay B. Pawade and published by CRC Press. This book was released on 2020-05-21 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxide nanoparticles exhibit potential applications in energy and environmental fields, such as solar cells, fuel cells, hydrogen energy, and energy storage devices. This book covers all points from synthesis, properties, and applications of transition metal oxide nanoparticle materials in energy storage and conversion devices. Aimed at graduate-level students and researchers associated with the energy and environment sector, this book addresses the application of nontoxic and environmentally friendly metal oxide materials for a clean environment and deals with synthesis properties and application metal oxides materials for energy conversion, energy storage, and hydrogen generation.
Book Synopsis The Chemistry of Nanostructured Materials by : Peidong Yang
Download or read book The Chemistry of Nanostructured Materials written by Peidong Yang and published by World Scientific. This book was released on 2011 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a sequel to the first volume of The Chemistry of Nanostructured Materials. It covers the most exciting developments in the nanostructured materials field for the past five to ten years, with a particular focus on their applications in energy conversion and energy storage. Prominent authors of recognized authority in the field contribute their expertise in the review chapters.
Book Synopsis Functional Metal Oxide Nanostructures by : Junqiao Wu
Download or read book Functional Metal Oxide Nanostructures written by Junqiao Wu and published by Springer Science & Business Media. This book was released on 2011-09-22 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxides and particularly their nanostructures have emerged as animportant class of materials with a rich spectrum of properties and greatpotential for device applications. In this book, contributions from leadingexperts emphasize basic physical properties, synthesis and processing, and thelatest applications in such areas as energy, catalysis and data storage. Functional Metal Oxide Nanostructuresis an essential reference for any materials scientist or engineer with aninterest in metal oxides, and particularly in recent progress in defectphysics, strain effects, solution-based synthesis, ionic conduction, and theirapplications.
Book Synopsis Vanadium Dioxide-Based Thermochromic Smart Windows by : Yi Long
Download or read book Vanadium Dioxide-Based Thermochromic Smart Windows written by Yi Long and published by CRC Press. This book was released on 2021-05-27 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The usage of building energy accounts for 30–40% of total energy consumption in developed countries, exceeding the amount for industry or transportation. Around 50% energy for building services is contributed by heating, ventilation, and air-conditioning (HVAC) systems. More importantly, both building and HVAC energy consumptions are predicted to increase in the next two decades. Windows are considered as the least energy-efficient components of buildings. Therefore, smart windows are becoming increasingly important as they are capable of reducing HVAC energy usage by tuning the transmitted sunlight in a smart and favoured way: blocking solar irradiation on hot days, while letting it pass through on cold days. Compared with other type of smart windows, thermochromic windows have the unique advantages of cost-effectiveness, rational stimulus, and passive response. This book covers fabrication of vanadium dioxide–based smart windows, discusses various strategies to enhance their performance, and shares perspectives from the top scientists in this particular field.
Book Synopsis Electrochromic Properties of Vanadium Pentoxide Nanostructured Thin Films by : Afaf Almoabadi
Download or read book Electrochromic Properties of Vanadium Pentoxide Nanostructured Thin Films written by Afaf Almoabadi and published by . This book was released on 2015 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT Electrochromic Properties of Vanadium Pentoxide Nanostructured Thin Films Afaf Almoabadi The focus of this work is the improvement of the electrochromic properties of vanadium pentoxide thin films in order to expand its use. Indeed, because of its rather poor electrochromic properties, until now, vanadium pentoxide has only been used as a storage material in an electrochromic device, in conjunction with tungsten oxide, molybdenum oxide etc. To this purpose, vanadium pentoxide thin films were prepared under different conditions and characterized by using optical and electrochemical methods. Films were deposited on indium tin oxide (ITO) substrates by dip-coating at both room- and sub-zero temperature (-100C) and porosity in the sol-gel prepared vanadium pentoxide film was created by using templating methods. The morphology, optical and electrochromic properties of the macro- and mesoporous films, prepared in the presence of structure-directing agents such as polystyrene microspheres and triblock copolymer, have been compared with those of dense films. By using various methods to remove the template material, it was shown that the morphology of the vanadium pentoxide film can be controlled and new nanostructures can be created. The transformation of the lamellar into a nanorod structure, observed when the film is heated at 425-500◦C for several hours, resulted in the development of an elegant method for the synthesis of vanadium oxide nanostructures. The electrochromic performance of the nanorods prepared through the thermal treatment was found to be superior to that of the vanadium pentoxide with the layered structure, especially in the near-infrared region, demonstrating their potential for electrochromic applications. The structure, morphology, optical and electrochromic properties of dense and porous vanadium oxide films, coated at low temperature were also determined and compared to those of the corresponding films, deposited under room-temperature conditions. The results indicated that in the films coated at -100C, a residual compressive stress exists that originates from a non-uniformity in depth of the film, most probably, due to the formation of micro voids during the deposition. The micro voids are preserved during the heat-treatment of the films. The "micro void" morphology was found to account for the considerably improved electrochromic properties of the sub-zero dip-coated films. Low-temperature coated films, heated at 4500C for several hours, undergo the transformation from a layered to a highly uniform nanorod structure with important potential optoelectronic applications. The overall aim of this work is thus to evaluate how the morphology of vanadium pentoxide thin films is instrumental in obtaining a material with a high lithium ion intercalation capacity. With an appropriate morphology, the performance of vanadium oxide as electrochromic material and as cathode in lithium ion batteries can be improved significantly. For this purpose, both layered (dense and porous) and nanorod films were prepared and characterized. Scanning electron microscopy, cyclic voltammetry and electrical impedance spectroscopy measurements were used for the characterization of the different V2O5 films.
Book Synopsis Nanostructures And Nanomaterials: Synthesis, Properties, And Applications (2nd Edition) by : Guozhong Cao
Download or read book Nanostructures And Nanomaterials: Synthesis, Properties, And Applications (2nd Edition) written by Guozhong Cao and published by World Scientific Publishing Company. This book was released on 2011-01-03 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the 2nd edition of the original “Nanostructures and Nanomaterials” written by Guozhong Cao and published by Imperial College Press in 2004.This important book focuses not only on the synthesis and fabrication of nanostructures and nanomaterials, but also includes properties and applications of nanostructures and nanomaterials, particularly inorganic nanomaterials. It provides balanced and comprehensive coverage of the fundamentals and processing techniques with regard to synthesis, characterization, properties, and applications of nanostructures and nanomaterials. Both chemical processing and lithographic techniques are presented in a systematic and coherent manner for the synthesis and fabrication of 0-D, 1-D, and 2-D nanostructures, as well as special nanomaterials such as carbon nanotubes and ordered mesoporous oxides. The book will serve as a general introduction to nanomaterials and nanotechnology for teaching and self-study purposes.
Book Synopsis Chemistry Of Nanostructured Materials, The - Volume Ii by : Peidong Yang
Download or read book Chemistry Of Nanostructured Materials, The - Volume Ii written by Peidong Yang and published by World Scientific. This book was released on 2011-01-04 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a sequel to the first volume of The Chemistry of Nanostructured Materials. It covers the most exciting developments in the nanostructured materials field for the past five to ten years, with a particular focus on their applications in energy conversion and energy storage. Prominent authors of recognized authority in the field contribute their expertise in the review chapters.
Book Synopsis Metal Oxide Nanoparticles, 2 Volume Set by : Oliver Diwald
Download or read book Metal Oxide Nanoparticles, 2 Volume Set written by Oliver Diwald and published by John Wiley & Sons. This book was released on 2021-09-14 with total page 903 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxide Nanoparticles A complete nanoparticle resource for chemists and industry professionals Metal oxide nanoparticles are integral to a wide range of natural and technological processes—from mineral transformation to electronics. Additionally, the fields of engineering, electronics, energy technology, and electronics all utilize metal oxide nanoparticle powders. Metal Oxide Nanoparticles: Formation, Functional Properties, and Interfaces presents readers with the most relevant synthesis and formulation approaches for using metal oxide nanoparticles as functional materials. It covers common processing routes and the assessment of physical and chemical particle properties through comprehensive and complementary characterization methods. This book will serve as an introduction to nanoparticle formulation, their interface chemistry and functional properties at the nanoscale. It will also act as an in-depth resource, sharing detailed information on advanced approaches to the physical, chemical, surface, and interface characterization of metal oxide nanoparticle powders and dispersions. Addresses the application of metal oxide nanoparticles and its economic impact Examines particle synthesis, including the principles of selected bottom-up strategies Explores nanoparticle formulation—a selection of processing and application routes Discusses the significance of particle surfaces and interfaces on structure formation, stability and functional materials properties Covers metal oxide nanoparticle characterization at different length scales With this valuable resource, academic researchers, industrial chemists, and PhD students can all gain insight into the synthesis, properties, and applications of metal oxide nanoparticles.
Book Synopsis Gas-Phase Synthesis of Nanoparticles by : Yves Huttel
Download or read book Gas-Phase Synthesis of Nanoparticles written by Yves Huttel and published by John Wiley & Sons. This book was released on 2017-06-19 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first overview of this topic begins with some historical aspects and a survey of the principles of the gas aggregation method. The second part covers modifications of this method resulting in different specialized techniques, while the third discusses the post-growth treatment that can be applied to the nanoparticles. The whole is rounded off by a review of future perspectives and the challenges facing the scientific and industrial communities. An excellent resource for anyone working with the synthesis of nanoparticles, both in academia and industry.
Book Synopsis Nanostructured Metal Oxides by : Dmitry Bavykin
Download or read book Nanostructured Metal Oxides written by Dmitry Bavykin and published by Springer. This book was released on 2017-10-06 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the current development of elongated nanostructured metal oxides including nanotubes, nanofibres and nanosheets. The first chapter considers historical overview of the research progress in nanostructured metals and provides brief encyclopaedic style collection of articles, each compiling available data for selected examples of nanostructured elongated metal oxides, including both single (e.g. titanium (IV), vanadium (V), manganese (IV)) and mixed (e.g. aluminosilicates, nickel silicates). The second chapter identifies and reviews general mechanisms of growth of 1 dimensional (1-D) nanostructures. The third chapter is focused on synthetic aspects for preparation of various 1-D metal oxide nanostructures as well as on methods of controlling their morphology and hierarchy. The last chapter provides a comprehensive review of existing and potential applications of 1-D nanostructured metal oxides over a wide range of industrial sectors such as energy conversion, bio-medical materials, surface engineering and defense.
Book Synopsis Gas Sensing Properties of Nanostructured Vanadium Oxide Semiconductors by Chemoresistive and Optical Methods by : Amos Adeleke Akande
Download or read book Gas Sensing Properties of Nanostructured Vanadium Oxide Semiconductors by Chemoresistive and Optical Methods written by Amos Adeleke Akande and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The aims of this research thesis are to synthesise VO2, V2O5 and V6O13 nanostructures and apply the materials on sensor electrodes for gas and humidity sensing. These materials were synthesised and optimised using chemical vapour deposition (CVD), microwave assisted and pulse laser deposition (PLD) techniques. Analyses with thermogravimetric (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometry (VSM), Raman and Fourier transform infrared (FTIR) spectroscopy showed VOx phases order as NH4VO3 ? VO2 + V2O5 (150 – 200 °C) ? V6O13 (300 °C) ? V2O5 (above 350 °C). This is when the precursor NH4VO3 was annealed in CVD between 100 – 350 °C in H2 atmosphere for 2 hrs. Adsorption analysis of VOx nanostructures showed a profile of Brunauer-Emmett-Teller (BET) surface areas which increased with the annealing temperature until 300 °C after which the transition occurred. Humidity (%) sensing response of VOx showed high response for V6O13 and V2O5 phase whereas, the Langmuir isotherm plot in the form of the response per BET surface area with respect to different levels of relative humidity showed high response for VO2. Phase evolution diagram based on these properties has been proposed. Thermal CVD annealing of NH4VO3 at 500 °C in N2 atmosphere for 2, 12 and 24 hours produced monoclinic V6O13 (at 2 hrs) and ?-orthorhombic V2O5 (at 12 and 24 hrs) nanorod structures using the above characterization techniques. Gas sensing application of these structures revealed that the H2S gas is selective in adsorption to V6O13 phase with 132 % response magnitude at 350 °C and 60 ppm, this response is 647.2 % higher than that of NH3, CH4, NO2, H2 and CO. The response and recovery times are 32 and 129 s respectively which is remarkably short compared with the data in literatures. This V6O13 sensor was ranked with its V2O5 counterpart and still found to be 238.5 % higher for H2S gas. Density functional theory (DFT) through ab initio molecular dynamics of (110) facet of monoclinic V6O13 and ?- orthorhombic V2O5 also showed high H2S adsorption energy for V6O13 than V2O5 with a profile which simulate the experimental findings. Low temperature microwave assisted synthesis of VOx from NH4VO3 without post-annealing treatment demonstrated small size homogeneous crystallite with high BET surface area and high adsorption and desorption pores. These properties translated to sub-ppm room temperature sensing of the flammable CH4 and odorant NH3 and toxic NO2 with high sensitivity. The VO2 (B) phase produced via the same microwave process applied for humidity sensing in the lateral gate metal oxide semiconductor field effect transistor (MOSFET) configuration for 0, 5, 8, 10, 12 and 15 V gate voltages. An optimum percentage humidity response observed at 5 V showed response and recovery times in the order of 60 – 70 s which is remarkably shorter than the ? 300 s response of the non-gated VO2 humidity sensor reported in this thesis. Statistical information extracted from the non-linear S-curve Hill Dose rate showed that the VO2 (B) sensor is very resilient to relative humidity by showing the humidity level of more than 100% where the response of the sensor could be reduced to 50%. In-situ Raman spectroscopy sensing of NH3 gas at the surface of PLD deposited V2O5 thin film was presented. The film crystal structure, depth profile and oxidation state was studied by cross section scanning electron microscope (SEM), time of flight secondary ion mass spectroscopy (TOF-SIMS), XPS and group theoretical analysis. Recoverable red shift of 194 cm-1 and blue shift of 996 cm-1phonons upon the interaction with the NH3 gas at 25 and 100 °C was observed. Decrease in the Raman scattered photons of the 145 cm-1 phonon was also observed for different levels of NH3 exposure. The responses of these phonon properties in NH3 environment compared to the chemoresistive sensing of the film at 40 ppm showed that the in-situ Raman spectroscopy techniques is not only more sensitive but also demonstrated possibility for selective gas detection via blue and red shift of phonon frequencies.
Book Synopsis Optimizing the Synthesis of Vanadium Oxide Nanostructures by Plasma Plume Dynamics by : Bathusile Nelisiwe Masina
Download or read book Optimizing the Synthesis of Vanadium Oxide Nanostructures by Plasma Plume Dynamics written by Bathusile Nelisiwe Masina and published by . This book was released on 2016 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
