Download or read book Aqueous Solution Synthesis of Nanocrystalline TiO2 Powders written by Cécile Charbonneau and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Hydrothermal Technology written by K. Byrappa and published by William Andrew. This book was released on 2012-12-31 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more -- all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume.The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including: À Evolution of the technology from geology to widespread industrial use. À Descriptions of equipment used in the process and how it works.À Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.À Analysis of the direction of today's technology. In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes. - Gives an overview of the evolution of Hydrothermal Technology from geology to widespread industrial use - Describes the equipment used in the process and how it works - Discusses problems involved with the growth of crystals, processing of technological materials, and environmental and safety issues

Download or read book Nanostructured Titanium Dioxide Materials written by Ali Reza Khataee and published by World Scientific. This book was released on 2012 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade, research and development in the area of synthesis and applications of different nanostructured titanium dioxide have become tremendous. This book briefly describes properties, production, modification and applications of nanostructured titanium dioxide focusing in particular on photocatalytic activity. The physicochemical properties of nanostructured titanium dioxide are highlighted and the links between properties and applications are emphasized. The preparation of TiO2 nanomaterials, including nanoparticles, nanorods, nanowires, nanosheets, nanofibers, and nanotubes are primarily categorized by their preparation method (sol-gel and hydrothermal processes). Examples of early applications of nanostructured titanium dioxide in dye-sensitized solar cells, hydrogen production and storage, sensors, rechargeable batteries, electrocatalysis, self-cleaning and antibacterial surfaces and photocatalytic cancer treatment are reviewed. The review of modifications of TiO2 nanomaterials is mainly focused on the research related to the modifications of the optical properties of TiO2 nanomaterials, since many applications of TiO2 nanomaterials are closely related to their optical properties. Photocatalytic removal of various pollutants using pure TiO2 nanomaterials, TiO2-based nanoclays and non-metal doped nanostructured TiO2 are also discussed.

Download or read book Chemistry Of Nanocrystalline Oxide Materials Combustion Synthesis Properties And Applications written by Manjanath Subraya Hedge and published by World Scientific. This book was released on 2008-09-08 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-oxide materials lend themselves to applications in a wide variety of emerging technological fields such as microelectronics, catalysts, ceramics, coatings, and energy storage. However, developing new routes for making nano-based materials is a challenging area for solid-state materials chemists. This book does just that by describing a novel method for preparing them. The authors have developed a novel low-temperature, self-propagating synthetic route to nano-oxides by the solution combustion and combustible precursor processes. This method provides the desired composition, structure, and properties for many types of technologically useful nanocrystalline oxide materials like alumina, ceria, iron oxides, titania, yttria, and zirconia, among others.The book is particularly instructive in bringing readers one step closer to the exploration of nanomaterials. Students of nanoscience can acquaint themselves with the actual production and evaluation of nanopowders by this route, while academic researchers and industrial scientists will find answers to a host of questions on nano-oxides. The book also provides an impetus for scientists in industrial research to evaluate and explore new ways to scale up the production of nanomaterials, offering helpful suggestions for further research.

Download or read book Chemistry of Nanocrystalline Oxide Materials written by K. C. Patil and published by World Scientific. This book was released on 2008 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-oxide materials lend themselves to applications in a wide variety of emerging technological fields such as microelectronics, catalysts, ceramics, coatings, and energy storage. However, developing new routes for making nano-based materials is a challenging area for solid-state materials chemists. This book does just that by describing a novel method for preparing them. The authors have developed a novel low-temperature, self-propagating synthetic route to nano-oxides by the solution combustion and combustible precursor processes. This method provides the desired composition, structure, and properties for many types of technologically useful nanocrystalline oxide materials like alumina, ceria, iron oxides, titania, yttria, and zirconia, among others.The book is particularly instructive in bringing readers one step closer to the exploration of nanomaterials. Students of nanoscience can acquaint themselves with the actual production and evaluation of nanopowders by this route, while academic researchers and industrial scientists will find answers to a host of questions on nano-oxides. The book also provides an impetus for scientists in industrial research to evaluate and explore new ways to scale up the production of nanomaterials, offering helpful suggestions for further research.

Download or read book Synthesis of TiO 1tn2 Based Nanoparticles for Photocatalytic Applications written by Kranthi Kumar Akurati and published by Cuvillier Verlag. This book was released on 2008 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization and Control of Interfaces for High Quality Advanced Materials written by Kevin Ewsuk and published by John Wiley & Sons. This book was released on 2012-04-11 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interface characterization and control are critical in the design and manufacture of high quality advanced materials, particularly, for nanomaterials. This proceedings features papers on interface science and technology that provide a unique and state-of-the art perspective on interface characterization and control. Articles from scientists and engineers from 11 different countries address interface control, high temperature interfaces, nanoparticle design, nanotechnology, suspension control, novel processing, particulate materials, microstructure, and hot gas cleaning. This unique volume will serve as a valuable reference for scientists and engineers interested in interfaces, particulate materials, and nanotechnology. Proceedings of the International Conference on ICCCI 2003, Kurashiki, Japan, 2003; Ceramic Transactions, Volume 146.

Download or read book Technical Proceedings of the 2007 Cleantech Conference and Trade Show written by NanoScience & Technology Inst and published by CRC Press. This book was released on 2019-08-22 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cleantech conference, which runs parallel with NSTI's Nanotech, is designed to promote advancements in traditional technologies, emerging technologies, and clean business practices, covering important developments in renewable energy, clean technologies, business and policy, bio-energy, and novel technologies, as well as environme

Download or read book Nanothermites written by Eric Lafontaine and published by John Wiley & Sons. This book was released on 2016-07-25 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent introduction of the “nano” dimension to pyrotechnics has made it possible to develop a new family of highly reactive substances: nanothermites. These have a chemical composition that is comparable to that of thermites at submillimeter or micrometric granulometry, but with a morphology having a much increased degree of homogeneity. This book discusses the methods of preparation of these energetic nanomaterials, their specific properties, and the different safety aspects inherent in their manipulation.

Download or read book Nanoparticle TiO2 Aqueous Interfacial Energy Can be Modified to Control Phase Stability Coarsening and Morphology written by Michael Patrick Finnegan and published by . This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ceramic Nanomaterials and Nanotechnology IV written by Richard M. Lane and published by John Wiley & Sons. This book was released on 2012-04-18 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the beginning of the nanotechnology era, research and development in this field has experienced an explosive growth in academia and industry. Topics covered in this book include synthesis and characterization of nanomaterials, nanoscale phenomena in electronic ceramics, nanostructured bioceramics, industrial development and application, and much more.

Download or read book Emerging Trends in TiO2 Photocatalysis and Applications written by Trong-On Do and published by MDPI. This book was released on 2020-12-28 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semiconductor titanium dioxide (TiO2) has been evolved as a prototypical material to understand the photocatalytic process, and has been demonstrated for various photocatalytic applications such as pollutants degradation, water splitting, heavy metal reduction, CO2 conversion, N2 fixation, bacterial disinfection, etc. Rigorous photocatalytic studies on TiO2 have paved the way to understanding the various chemical processes involved and the physical parameters (optical and electrical) required to design and construct diverse photocatalytic systems. Accordingly, it has been realized that an effective photocatalyst should have ideal band edge potential, narrow band gap energy, reduced charge recombination, enhanced charge separation, improved interfacial charge transfer, surface-rich catalytic sites, etc. As a result, many strategies have been developed to design a variety of photocatalytic systems, which include doping, composite formation, sensitization, co-catalyst loading, etc. Towards highlighting the above-mentioned diversities in TiO2 photocatalysis, there have been many interesting original research works on TiO2, involving material designs for various photocatalytic applications published in this Special Issue. In addition, some excellent review papers have also been published in this Special Issue, focusing on the various TiO2-based photocatalytic systems and their mechanisms and applications.

Download or read book Novel Soft Chemistry Synthesis of Titanium Dioxide for Applications in Dye Sensitized Solar Cells and Photocatalysis written by Aiat Hegazy and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the high cost of solar cells prevents them being a primary candidate for energy production, great attention has been paid towards them because of the depletion of the conventional energy sources-fossil fuels-and the global warming effect, and the need to provide power to remote communities disconnected from the power grid. To reduce the cost, thin film technologies for silicon solar cells have also been investigated and commercialized, but dye sensitized solar cells (DSSC) have been considered as a promising alternative even for the silicon thin films with efficiency exceeding 10%. Compared with silicon-based photovoltaic devices, DSSCs are quite complex systems that require an intimate interaction among components. Within the last few years, conclusive smart solutions have been provided to improve the efficiency of these cells, with solar efficiency that makes them potential competitors against silicon devices. The most successful systems use titanium oxide as a core material tuned to collect and transmit the electrons generated by the photo-excitation of dye molecules. However, most of the solutions demonstrated so far require a thermal treatment of the TiO2 photoelectrodes at temperatures that preclude using any flexible organic substrate. This treatment prevents development of any roll-to-roll manufacturing process, which would be the only way to achieve cost effective large scale production. In order to overcome this major drawback, a novel synthesis of TiO2 at room temperature is described in the present document. This synthesis leads to 4-6 nm nanocrystalline anatase, the desired phase of titanium oxide for photoactive applications. An intensive study was carried out to explore the properties of these nanoparticles, via a mixture design study designed to analyze the influence of the starting composition on the final TiO2 structure. The influence of a post-synthesis thermal treatment was also explored. This 4 nm nanocrystalline TiO2 exhibits a high specific surface area and a good porosity that fulfills the requirements for an efficient photoanode; a high surface area allows high dye loading, and, hence, increases photocurrent and photo-conversion efficiency. Another important result of this study is the band gap, as it confirmed that nanocrystalline anatase has an indirect band gap and a quantum confinement for a crystal size of less than 10 nm. This result, well-known for bulk materials, had been discussed in some previous publications that claimed the effectiveness of a direct band gap. Following this synthesis and the structural and spectroscopic analyzes carried out in parallel, photocatalytic study was an important tool to further explore the semiconducting properties of this material. Additionally, our material gave very promising results in photocatalytic dye degradation, compared to the commercial products, even if it was not initially synthesized for this application. We assign these performances to the improved crystallinity resulting from thermal activation, without changing the crystal size, and to the ability to optimize the surface. This photocatalytic study gave us insights into the methods that optimize the electronic structure of the titanium oxide. Hence, we decided to thermally activate the nanoparticles before the preparation of films to be inserted into DSSCs. At this stage, as the thermal activation applies to the powder, the resulting material can still be used with flexible substrates. We have successfully integrated these nanoparticles in dye sensitized solar cells. Various organic additives were added to the TiO2 paste used to prepare photoelectrode films, to increase the porosity of the film and have a crack-free film with good attachment to the substrate. We demonstrated that the dye was chemically attached to the TiO2 surface, which led to better electron transport. Different treatment methods (UV and thermal) were applied to the film to cure it from organic additives and improve the electronic connectivity between the particles. When the UV treatment was applied as a single method, i.e. without thermal treatment, the cell performance was lower, but a combination of thermal treatment and UV enhanced this performance. We compared our nanoparticles to the reference material used in most of the studies on DSSC, that is, TiO2 Degussa, with cells prepared the same way. Our nanoparticles revealed higher overall conversion efficiency. As the dye attachment to the TiO2 surface is an important parameter that enhances the cell efficiency, so we checked via ATR-FTIR how the dye attached to the TiO2 surface. In addition, FTIR, UV-Vis, and IV measurements revealed that the amount of dye adsorbed was increased through HCl treatment of the photoelectrode. We also checked the internal resistance of the cell using impedance spectroscopy, and the analysis proved a successful integration of the nanoparticles in dye-sensitized solar cells as there was an increase in both the electron life time and the recombination resistance, and a decrease in the charge transfer resistance compared to the commercial powder.

Download or read book Russian Journal of Inorganic Chemistry written by and published by . This book was released on 2002 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Biological and Environmental Engineering Proceedings of the International Conference on Cbee 2009 written by Li Kai and published by World Scientific. This book was released on 2010 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Held in Singapore from 9 to 11 October 2009, the 2009 International Conference on Chemical, Biological and Environmental Engineering (CBEE 2009) aims to provide a platform for researchers, engineers, academicians as well as industrial professionals from all over the world to present their research and development activities in chemical, biological and environmental engineering. Conference delegates will also have the opportunity to exchange new ideas and application experiences, establish business or research relations and find global partners for future collaboration. Sample Chapter(s). Chapter 1: The Future of Biopharmaceutics'' Production (92 KB). Contents: Study on Pyrolysis Characteristics of Electronic Waste (J Sun et al.); Application of Noise Mapping on Environmental Management (K-T Tsai et al.); Characteristics and Transport Properties of Two Modified Zero Valent Iron (Y-H Lin et al.); Synthesis of Visible Light Active N-Doped Titania Photocatalyst (C Kusumawardani et al.); CFD-PBM Modeling of Vertical Bubbly Flows (M R Rahimi & H Karimi); Hydrotalcite-Like Synthesis Using Magnesium from Brine Water (E Heraldy et al.); Cement/Activated-Carbon Solidification/Stabilization Treatment of Nitrobenzene (Z Su et al.); Investigation of Fish Species Biodiversity in Haraz River (I Piri et al.); Risk Assessment of Fluoride in Indian Context (V Chaudhary & M Kumar); Light Transmission In Fluidized Bed (E Shahbazali et al.); Drying of Mushroom Using a Solar Tunnel Dryer (M A Basunia et al.); and other papers. Readership: Researchers, engineers, academicians and industrial professionals in related fields of chemical, biological and environmental engineering.

Download or read book Handbook of Smart Photocatalytic Materials written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2020-02-06 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Smart Photocatalytic Materials: Fundamentals, Fabrications and Water Resource Applications provides a best study and practice guide to catalysis materials, covering metal oxides, metal-organic frameworks, plasmonics and hybrids, their green growth and assembly techniques and their characterization. This volume establishes a broad and influential resource on fundamentals, fabrications and water resource applications. Each chapter incorporates state-of-the-art information, along with important concepts of theory and practice. The handbook will be an indispensable reference for both research communities and industry professionals. - Presents a compilation of up-to-date research and technology on Smart Photocatalytic Materials - Provides a fundamental understanding of several green synthesis methods - Highlights in-depth, cutting-edge knowledge on fundamentals, fabrications and water resource applications - Includes economical and safety aspects - Offers real-world applications of photocatalytic materials

Download or read book Isotopes in Nanoparticles written by Jordi Llop and published by CRC Press. This book was released on 2016-03-30 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles may be used in industrial processes, incorporated into consumer products, or applied as biomedical agents. Isotopic (radio)labeling is one of the most powerful methods for nanoparticle tracing in experimental studies. This book presents an introduction to some commonly used nanomaterials, describes various methods with which they may