Download or read book Titania Nanostructures for Optoelectronics Applications written by Lili Wang and published by . This book was released on 2015 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide (titania) nanotubular structure discovered in 2001 have been attracting extensive interest due to their widely applications in photocatalysis, catalysis and solar cells. The final products of titania nanotube (TiNT) arrays can be synthesized in three forms. One is in form of ordered arrays attached to original Ti substrate, another one is in form of free-standing arrays and the last form is white powders. In this dissertation, we review the development history of these three types of TiNT arrays and introduce the fabrication process of TiNTs products in detail including morphology characterization, fabrication parameter study and optimization of synthesis condition. Since titania is a semiconductor with large band gap (3.2 eV), the large bandgap leads to only UV light absorption, which constitutes less than 5% of the whole solar spectrum. In order to efficiently harvest solar energy for the solar cells made of titania, several methods depositing TiNT arrays with metal oxides to improve the light harvesting are presented in this dissertation. A comprehensive study of forced hydrolysis method is carried out and investigated. Preliminary devices are built up in DSSCs concept based on the hybrid structure of TiO2/Fe22O3. Some important parameters, such as open circuit voltage (VOC), short circuit current (ISC), and fill factor (FF) are evaluated. Optical properties of the samples with the hybrid architecture are studied to achieve an optimal performance in DSSCs-type solar cells.
Download or read book Novel Titania Nanostructures for Photovoltaic Applications written by Keng-Chu Lin and published by . This book was released on 2013 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studied the loading effect of a novel red light absorber, a silicon phthalocyanine (Pc 61) with axially substituted carboxylic groups. A series of Pc 61-sensitized TiO2 films and DSSC devices with different dye immersion times were prepared and characterized by their optical, electrical and ultrafast photophysical properties. The results of incident photon-to-current conversion efficiency and the power conversion efficiency showed that the solar cells prepared with 120-min dye immersion time have the best performance, in agreement with the time-resolved photoluminescence lifetime data. Furthermore, in order to improve the development and optimization of DSSCs, a comprehensive model that accounts for all optical and electrical loss channels in a DSSC is established. Most of the intrinsic parameters can be identified and quantified by analyzing the obtained results including reflectance, transmittance, absorptance of the dye sensitizer, the electron injection efficiency and the charge collection efficiency. In addition, the internal quantum efficiency, which is an important characteristic of DSSCs that is not directly measured, can be determined through systematic measurements. In order to improve the charge collection efficiency in a DSSC, two novel nanostructured TiO2 photoanodes, nanopores and bamboo-type nanotubes, were fabricated by electrochemical anodization of titanium-coated FTO glass and pure titanium foil, respectively. Field-emission scanning electron microscopy (FE-SEM), energy dispersive X-ray analysis (EDX), X-ray powder diffractometry (XRD) and Raman spectroscopy were used to investigate the structure and morphology of the obtained nanostructured TiO2 photoanodes.
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 Synthesis Properties and Applications of Titania Nanostructures written by Shikha Wadhwa 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 Titanium Dioxide written by Dongfang Yang and published by BoD – Books on Demand. This book was released on 2018-06-27 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide is currently being used in many industrial products. It provides unique photocatalytic properties for water splitting and purification, bacterial inactivation, and organics degradation. It has also been widely used as the photoanode for dye-sensitized solar cells and coatings for self-cleaning surfaces, biomedical implants, and nanomedicine. This book covers various aspects of titanium dioxide nanomaterials including their unique one-dimensional, two-dimensional, mesoporous, and hierarchical nanostructures and their synthetic methods such as sol-gel, hydrothermal, anodic oxidation, and electrophoretic deposition, as well as its key applications in environmental and energy sectors. Through these 24 chapters written by experts from the international scientific community, readers will have access to a comprehensive overview of the recent research and development findings on the titanium dioxide nanomaterials.
Download or read book Titania Nanostructures Developed for Applications in Solar Cells and Lithium Ion Batteries written by 王洪恩 and published by . This book was released on 2012 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanostructured Titanium Dioxide in Photocatalysis written by It-Meng Low and published by CRC Press. This book was released on 2021-06-18 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide (TiO2) has drawn considerable attention as an attractive inorganic raw material for various applications due to its inexpensiveness, nontoxic nature, stability, and excellent photocatalytic activity. Photocatalysis is one of the most promising route for sustainable chemistry of the 21st century. It can contribute to solving environmental, global energy, and chemical problems, as well as to the sustainable production of commodities in the near future. This book presents the fundamentals of photocatalysis in nanostructured TiO2 and describes the factors affecting the photocatalytic activity, design, and synthesis of various forms of nanostructured TiO2. It highlights the use of ion-doping and inert-atmosphere annealing to extend the light-absorption range of photocatalysts and reduce recombination between electrons and holes. It discusses numerous applications in the fields of energy and environment, such as water purification, gas sensing, storage and delivery, and energy generation. The book is an invaluable resource and useful guide for a broad readership in various fields of catalysis, materials science, environment, and energy.
Download or read book Nanosized Titania Composites for Reinforcement of Photocatalysis and Photoelectrocatalysis written by Maksym Zahornyi and published by Cambridge Scholars Publishing. This book was released on 2022-02-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses recent advances in the photocatalytic and electrophotocatalytic applications of titanium dioxide nanocomposites containing polymers and other components. These materials possess photocatalytic, virucidal and antimicrobial efficacy and water and air cleaning abilities against eco-toxicants, and allow water splitting for the generation of chemical fuels. The book considers the ability of nanocomposites’ components to reinforce titania functionality in photocatalysis and photoelectrocatalysis, and presents an overview of their occurrence in nature, their thermodynamic properties, and their toxicity. The volume will be of interest to chemists and material science specialists and practitioners, as well as any reader interested in the recent scientific achievements for green and sustainable development.
Download or read book Structuring and filling of titania films for applications in photovoltaics written by Monika Rawolle and published by Cuvillier Verlag. This book was released on 2013-04-02 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kurzbeschreibung Die Möglichkeiten, Titandioxid Nanostrukturen zu synthetisieren, sowie die erhaltenen Strukturen rückzubefüllen, werden mit Hinblick auf Anwendungen in der Photovoltaik in der vorliegenden Arbeit untersucht. Auf Titandioxid basierende Solarzellen werden in Hybridsolarzellen und in Farbstoffsolarzellen unterteilt. Das Hauptaugenmerk der Untersuchungen liegt auf der Korrelation zwischen Morphologie und Funktion der resultierenden Strukturen. Die verschiedenen untersuchten Systeme und die damit verbundenen Fragestellungen umfassen zum einen die Strukturierung von Titandioxid und zum anderen das Rückbefüllen dieser Strukturen. Die Synthese von Titandioxid wird mittels Sol-Gel Chemie vorgenommen. Die Strukturen werden in der Synthese durch Blockcopolymertemplate vorgegeben. Die damit hergestellten dünnen Filme von Titandioxid zeigen eine hohe Porosität, mit einer Schwammartigen Morphologie die sowohl Mesoporen als auch Makroporen aufweist. Die Strukturen werden in dünnen Filmen und in einem nanostrukturierten Tropfen untersucht. Eine Verbesserung der Strukturen durch die Kombination der Sol-Gel Synthese mit Mikrofluidik wird ebenfalls diskutiert. Zudem wird eine mögliche Syntheseroute bei niedrigen Temperaturen vorgestellt, die es erlaubt kristallines Titandioxid zu erhalten. Die Stabilität der Strukturen gegen die Kapillarkräfte bei der Infiltrierung von Wasserdampf wird getestet. Um funktionierende Solarzellen zu erhalten, müssen die Titandioxidnanostrukturen mit einem lochleitenden Material gefüllt werden. Der Grad der Rückbefüllung mit lochleitenden Materialien korreliert mit der Funktion in Solarzellen. Description In the presented thesis, the possibilities to synthesize titania nanostructures and the possibilities to fill the resulting nanostructures by other materials are investigated for photovoltaic applications. The solar cells based on titania are distinguished either as hybrid or as dye-sensitized solar cells. The main focus of the investigations lies on the correlation of the morphology and the functionality of the obtained thin films. The different investigated systems and related questions comprise the structuring of titania on the one hand, and the filling of the structures on the other hand. Sol-gel chemistry in combination with block copolymers as structure templates is applied to obtain titania thin films with a sponge-like morphology, which shows a high porosity and both mesopores and macropores. The structures are investigated in thin films, but also in a nanostructured drop of titania. Improvement of the structures by the combination of micro-fluidics with the templated sol-gel is also discussed. Furthermore, a low temperature synthesis route is examined to obtain crystalline titania. The stability of the resulting titania films is checked for water vapor infiltration with the resulting capillary forces. In order to obtain working solar cells, the titania nanostructures need to be filled by hole-conducting materials. The degree of filling of the structures with hole-conducting organic materials is related to the functionality of the solar cells.
Download or read book Design of Nanostructures written by Himadri B. Bohidar and published by John Wiley & Sons. This book was released on 2017-06-14 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adopting a unique approach, this book provides a thorough, one-stop introduction to nanoscience and self-assembly of nanomaterials composed of such materials as metals, metal oxides, metal sulphides, polymers, and biopolymers. Clearly divided into three sections covering the main aspects of nanoscience, the first part deals with the basic principles of nanoscale science. Alongside essential approaches and forces, this section also covers thermodynamics, phase transitions, and applications to biological systems. The second and third parts then go on to provide a detailed description of the synthesis of inorganic and organic nanoparticles, respectively. With its interdisciplinary content of importance to many different branches of nanoscience, this is essential reading for material scientists, physicists, biophysical chemists, chemical engineers, and biotechnologists alike.
Download or read book Metal Oxides for Optoelectronics and Optics Based Medical Applications written by Suresh Sagadevan and published by Elsevier. This book was released on 2022-07-01 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxides for Optoelectronics and Optics-based Medical Applications reviews recent advances in metal oxides and their mechanisms for optoelectronic, photoluminescent and medical applications. In addition, the book examines the integration of key chemistry concepts with nanoelectronics that can improve performance in a diverse range of applications. Sections place a strong emphasis on synthesis processes that can improve the metal oxides’ physical properties and the reflected surface chemical changes that can impact their performance in various devices like light-emitting diodes, luminescence materials, solar cells, etc. Finally, the book discusses the challenges associated with the handling and maintenance of metal oxides crystalline properties. This book will be suitable for academics and those working in R&D in industry looking to learn more about cheaper and more effective methods to produce metal oxides for use in the fields of electronics, photonics, biophotonics and engineering. Reviews the latest advances in the utilization of metal oxide materials in photonics, optoelectronics and optics-based medical applications Considers the most relevant synthesis strategies for the development of high-performing metal oxide-based devices Addresses a wide range of metal oxides including photonic crystals, fibers, metastructures, glasses, and more
Download or read book Physics Chemistry And Application Of Nanostructures Reviews And Short Notes To Nanomeeting 2017 written by Victor E Borisenko and published by World Scientific. This book was released on 2017-04-27 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents invited reviews and original short notes of recent results obtained in studies concerning the fabrication and application of nanostructures, which hold great promise for the new generation of electronic, optoelectronic and energy conversion devices. They present achievements discussed at Special Sessions 'Frontiers of Molecular Diagnostics with Nanostructures' and 'Nanoelectromagnetics' organized within Nanomeeting-2017.Discussing exciting and relatively new topics such as fast-progressing nanoelectronics and optoelectronics, molecular electronics and spintronics, nanoelectromagnetics, nanophotonics, nanosensorics and nanoenergetics as well as nanotechnology and quantum processing of information, this book gives readers a more complete understanding of the practical applications of nanotechnology and nanostructures.
Download or read book Titanium Dioxide written by Hafiz Muhammad Ali and published by BoD – Books on Demand. This book was released on 2022-03-02 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of titanium dioxide, including recent advances and applications. It focuses on the compound’s uses in environmental remediation, photocatalytic materials, rechargeable lithium-ion batteries, thin films, energy storage, semiconductors, and much more. This volume is a useful resource for researchers, scientists, engineers, and students.
Download or read book Application of Titanium Dioxide written by Magdalena Janus and published by BoD – Books on Demand. This book was released on 2017-07-26 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide is mainly used as a pigment and photocatalyst. It is possible to find it in food, cosmetics, building materials, electric devices, and others. This book contains chapters about application of titanium dioxide in different branches of economy such as the agriculture, the food industry, the medicine, the cosmetics, the water treatment technologies, and the semiconductors.
Download or read book Nanostructured Titanium Dioxide in Photocatalysis written by It-Meng Low and published by Jenny Stanford Publishing. This book was released on 2021-06-18 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide (TiO2) has drawn considerable attention as an attractive inorganic raw material for various applications due to its inexpensiveness, nontoxic nature, stability, and excellent photocatalytic activity. Photocatalysis is one of the most promising route for sustainable chemistry of the 21st century. It can contribute to solving environmental, global energy, and chemical problems, as well as to the sustainable production of commodities in the near future. This book presents the fundamentals of photocatalysis in nanostructured TiO2 and describes the factors affecting the photocatalytic activity, design, and synthesis of various forms of nanostructured TiO2. It highlights the use of ion-doping and inert-atmosphere annealing to extend the light-absorption range of photocatalysts and reduce recombination between electrons and holes. It discusses numerous applications in the fields of energy and environment, such as water purification, gas sensing, storage and delivery, and energy generation. The book is an invaluable resource and useful guide for a broad readership in various fields of catalysis, materials science, environment, and energy.
Download or read book Physics Chemistry And Applications Of Nanostructures Reviews And Short Notes Proceedings Of International Conference Nanomeeting 2011 written by Valerij S Gurin and published by World Scientific. This book was released on 2011-04-08 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents invited reviews and original short notes of recent results obtained in studies concerning the fabrication and application of nanostructures, which hold great promise for the new generation of electronic and optoelectronic devices.Governing exciting and relatively new topics such as fast-progressing nanoelectronics and optoelectronics, molecular electronics and spintronics, nanophotonics, nanosensorics and nanobiology as well as nanotechnology and quantum processing of information, this book gives readers a more complete understanding of the practical uses of nanotechnology and nanostructures.
Download or read book BioNanotechnology written by Elisabeth Papazoglou and published by Springer Nature. This book was released on 2022-06-01 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to provide vital information about the growing field of bionanotechnology for undergraduate and graduate students, as well as working professionals in various fields. The fundamentals of nanotechnology are covered along with several specific bionanotechnology applications, including nanobioimaging and drug delivery which is a growing $100 billions industry. The uniqueness of the field has been brought out with unparalleled lucidity; a balance between important insight into the synthetic methods of preparing stable nano-structures and medical applications driven focus educates and informs the reader on the impact of this emerging field. Critical examination of potential threats followed by a current global outlook completes the discussion. In short, the book takes you through a journey from fundamentals to frontiers of bionanotechnology so that you can understand and make informed decisions on the impact of bionano on your career and business.
