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Synthesis And Characterization Of Tantalum Oxide Based Nanowire Heterostructures For Photocatalysis
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Book Synopsis Synthesis and Characterization of Tantalum Oxide-based Nanowire Heterostructures for Photocatalysis by : Lyndon Edward Smith
Download or read book Synthesis and Characterization of Tantalum Oxide-based Nanowire Heterostructures for Photocatalysis written by Lyndon Edward Smith and published by . This book was released on 2012 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanostructures under irradiation catalyze the mineralization of organic dyes in solution. To improve the efficiency of this process, many novel nano-heterostructures have been fabricated using a variety of synthetic methods, however, many of these methods require management of difficult to control parameters, days of aging, and dangerous or expensive precursors to synthesize nanomaterials that may lack uniformity, recoverability, or efficiency. In this thesis, 1D CuO-TaO_x -NiO_y nano-heterostructures are fabricated using a combination of thermal oxidation and DC magnetron sputter deposition. CuO nanowires were synthesized by thermal oxidation, and TaO_x and NiO_y were deposited onto CuO nanowire template by sputter deposition of the metal followed by thermal annealing in air. A systematic study was done on the effect of sputter deposition parameters and annealing temperature for Ta. The completed heterostructure was evaluated by its performance in the degradation of various organic dyes. CuO-TaO_x -NiO_y nanowires with thin (10 nm thick) layers in methylene blue (concentration = 20 mg/L) with a catalyst dose of 1.0 g/L were found to be the most efficient catalyst. Rationally engineered semiconductor nano-heterostructures can be applied in environmental remediation and reduce the amount of pollution from industrial waste effluent.
Book Synopsis Synthesis, Characterization, and Photocatalytic Activity of Tantalum Oxide Thin Films by :
Download or read book Synthesis, Characterization, and Photocatalytic Activity of Tantalum Oxide Thin Films written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Applications of Nanomaterials in the Field of Photocatalysis by : Shamaila Sajjad
Download or read book Synthesis, Characterization and Applications of Nanomaterials in the Field of Photocatalysis written by Shamaila Sajjad and published by GRIN Verlag. This book was released on 2011-08 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2011 in the subject Chemistry - Materials Chemistry, East China University of Science and Technology (-), language: English, abstract: Considerable effort has been made to design, fabricate, and manipulate nanostructured materials by innovative approaches. The precise control of nanoscale structures will pave the way not only for elucidating unique size/shape dependent physicochemical properties but also for realizing new applications in science and technology. Nanotechnology offers unprecedented opportunities for improving our daily lives and the environment in which we live. This thesis mainly describes recent progress in the design, fabrication, and modification of nanostructured semiconductor materials for environmental applications. The scope of this thesis covers TiO2, Bi2O3 and BiOCl materials, focusing particularly on TiO2-based nanostructures (e.g., pure, doped, coupled, mesoporous, hierarchically porous, and ordered mesoporous TiO2). Mesoporous titania is of particular interest since this class of materials possesses well-defined porosity and large specific surface areas. For photocatalytic degradation of organics, these desirable properties are anticipated to improve the efficiency. So in the first part of work, I have synthesized the mesoporous titania by using poly ethylene glycol as a template in dilute acetic acid aqueous solution by hydrothermal process and investigated the effect of PEG molecular weights and thermal treatment on the resultant structure and photocatalytic activity. When the molecular weights of PEG vary from 600 to 20,000, the particle sizes of mesoporous-TiO2 structure decrease from 15.1 to 13.3 nm and mean pore sizes increase from 6.9-10.6 nm. The activities of these mesoporous-TiO2 photocatalysts prepared by using PEG are evaluated and compared with Degussa P-25 using chloro-phenol as a testing compound. [...]
Book Synopsis Synthesis and Characterization of Sol-gel Derived Tantalum Oxide, Tantalum Nitride, and Nickel-alumina Thin Films by : Gerald Thomas Kraus
Download or read book Synthesis and Characterization of Sol-gel Derived Tantalum Oxide, Tantalum Nitride, and Nickel-alumina Thin Films written by Gerald Thomas Kraus and published by . This book was released on 1997 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Tantalum Based Photocatalysts and Application for Methylene Blue Degradation by :
Download or read book Synthesis and Characterization of Tantalum Based Photocatalysts and Application for Methylene Blue Degradation written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Property Measurement of Novel Metal-oxide-metal Heterojunction Nanowires with Ferroelectric Functionality by : Edward David Herderick
Download or read book Synthesis, Characterization, and Property Measurement of Novel Metal-oxide-metal Heterojunction Nanowires with Ferroelectric Functionality written by Edward David Herderick and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, a novel method is developed to synthesize Au-TiO2-Au, Au-BaTiO3-Au and Au-PbTiO3-Au MOM heterojunction nanowires. This is the first report of successful synthesis of MOM nanowires with ternary oxides. Results from the synthesis and characterization of these nanowires are presented.
Book Synopsis Synthesis and Characterization of Engineered Metal-oxide-metal Heterojunction Nanowires by : Jason Scott Tresback
Download or read book Synthesis and Characterization of Engineered Metal-oxide-metal Heterojunction Nanowires written by Jason Scott Tresback and published by . This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal Oxide-based Hybrid Semiconductor Nanowires by : Wenjie (Andy). Cai
Download or read book Metal Oxide-based Hybrid Semiconductor Nanowires written by Wenjie (Andy). Cai and published by . This book was released on 2012 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis And Characterization Of Copper Oxide Nanowires by : Marianna Perdiki
Download or read book Synthesis And Characterization Of Copper Oxide Nanowires written by Marianna Perdiki and published by LAP Lambert Academic Publishing. This book was released on 2013-01 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Copper oxide nanowires are source of a great interest in the scientific community due to numerous properties and the wide range of possible applications of this nanoscale material. In this project, CuO nanowire growth was achieved using an atmospheric pressure chemical vapor deposition (APCVD) reactor via dry oxidation at various temperatures and gas flow rates. The growth of nanowires was successful, when the substrate was a thin copper foil. In our experiments, copper oxide nanowires formed at 600 oC with ramp rate = 30 C/min. Afterwards, transport of nanowires on p+Si(001) was studied using an ultrasonicator. The best results of transfer were found when the ultrasonication lasted twenty seconds. In this case, 1.82 ml of solution with nanowires was dropped on the surface of silicon, which was successfully covered with copper oxide nanowires. The photoluminescence (PL) spectrum at 300 K consisted of a broad peak centered at 419 nm. Moreover, time correlated single photon counting (TCSPC) PL measurements were taken at room temperature (RT) for 400 nm emission wavelength over a time span of 50 ns.
Book Synopsis Synthesis and Characterization of Tantalum Pentoxide Hollow Nanospheres by Use of a Sacrificial Carbonaceous Template by : Erik Pfeifer
Download or read book Synthesis and Characterization of Tantalum Pentoxide Hollow Nanospheres by Use of a Sacrificial Carbonaceous Template written by Erik Pfeifer and published by . This book was released on 2013 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoelectrochemical Water Splitting by : Zhebo Chen
Download or read book Photoelectrochemical Water Splitting written by Zhebo Chen and published by Springer Science & Business Media. This book was released on 2013-08-28 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines many of the techniques involved in materials development and characterization for photoelectrochemical (PEC) – for example, proper metrics for describing material performance, how to assemble testing cells and prepare materials for assessment of their properties, and how to perform the experimental measurements needed to achieve reliable results towards better scientific understanding. For each technique, proper procedure, benefits, limitations, and data interpretation are discussed. Consolidating this information in a short, accessible, and easy to read reference guide will allow researchers to more rapidly immerse themselves into PEC research and also better compare their results against those of other researchers to better advance materials development. This book serves as a “how-to” guide for researchers engaged in or interested in engaging in the field of photoelectrochemical (PEC) water splitting. PEC water splitting is a rapidly growing field of research in which the goal is to develop materials which can absorb the energy from sunlight to drive electrochemical hydrogen production from the splitting of water. The substantial complexity in the scientific understanding and experimental protocols needed to sufficiently pursue accurate and reliable materials development means that a large need exists to consolidate and standardize the most common methods utilized by researchers in this field.
Book Synopsis Chemically Deposited Nanocrystalline Metal Oxide Thin Films by : Fabian I. Ezema
Download or read book Chemically Deposited Nanocrystalline Metal Oxide Thin Films written by Fabian I. Ezema and published by Springer Nature. This book was released on 2021-06-26 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book guides beginners in the areas of thin film preparation, characterization, and device making, while providing insight into these areas for experts. As chemically deposited metal oxides are currently gaining attention in development of devices such as solar cells, supercapacitors, batteries, sensors, etc., the book illustrates how the chemical deposition route is emerging as a relatively inexpensive, simple, and convenient solution for large area deposition. The advancement in the nanostructured materials for the development of devices is fully discussed.
Book Synopsis Perovskite and Piezoelectric Materials by : Someshwar Pola
Download or read book Perovskite and Piezoelectric Materials written by Someshwar Pola and published by BoD – Books on Demand. This book was released on 2021-01-27 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigating in the area of perovskite materials and the fabrication of devices for properties in optoelectronics, we have presented a brief outline of perovskite materials. The authors present a fairly comprehensive arrangement of this very active area of research, with its past changes and present position and outlooks. Discussions are presented regarding photocatalysis, fabrication of solar cell devices and their stability, lead-free materials, as well as thermoelectric and piezoelectric applications. In view of the present status of perovskite materials, I am assured that each chapter of the book will be of boundless encouragement for researchers, scientists, and academicians working in this field.
Book Synopsis Hierarchical Nanostructures for Energy Devices by : Seung H Ko
Download or read book Hierarchical Nanostructures for Energy Devices written by Seung H Ko and published by Royal Society of Chemistry. This book was released on 2014-10-29 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface area has a directly relationship with the efficiency of energy devices. Hierarchical nanostructuring has the potential to greatly increase surface area, and their electrical properties are favourable, not only to energy generation and storage, but also energy-consuming electronic circuits. This book provides systematic coverage of how nanostructured materials can be applied to energy devices, with an emphasis on the process of generation to storage and consumption. The fundamentals (including properties, characterisation and synthesis) are clearly presented across the first chapters of the book, providing readers new to the field with a clear overview of this expanding topic. The detailed discussion of applications will be an inspiration to those already well-versed in the field. The editors have more than a decade of experience in working on all aspects of energy generation and storage - in academia, national laboratories and industry. The book presents a balanced view from all sectors and is presented in a format accessible by postgraduate students and professional researchers alike.
Book Synopsis Photoelectrocatalysis by : Leonardo Palmisano
Download or read book Photoelectrocatalysis written by Leonardo Palmisano and published by Elsevier. This book was released on 2022-10-21 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoelectrocatalysis: Fundamentals and Applications presents an in-depth review of the topic for students and researchersworking on photoelectrocatalysis-related subjects from pure chemistry to materials and environmental chemistry inorder to propose applications and new perspectives. The main advantage of a photoelectrocatalytic process is the mildexperimental conditions under which the reactions are carried out, which are often possible at atmospheric pressure androom temperature using cheap and nontoxic solvents (e.g., water), oxidants (e.g., O2 from the air), catalytic materials (e.g.,TiO2 on Ti layer), and the potential exploitation of solar light. This book presents the fundamentals and the applications of photoelectrocatalysis, such as hydrogen production fromwater splitting, the remediation of harmful compounds, and CO2 reduction. Photoelectrocatalytic reactors and lightsources, in addition to kinetic aspects, are presented along with an exploration of the relationship between photocatalysisand electrocatalysis. In addition, photocorrosion issues and the application of selective photoelectrocatalytic organictransformations, which is now a growing field of research, are also reported. Finally, the advantages/disadvantages andfuture perspectives of photoelectrocatalysis are highlighted through the possibility of working at a pilot/industrial scale inenvironmentally friendly conditions. Presents the fundamentals of photoelectrocatalysis Outlines photoelectrocatalytic green chemistry Reviews photoelectrocatalytic remediation of harmful compounds, hydrogen production, and CO2 reduction Includes photocorrosion, photoelectrocatalytic reactors, and modeling along with kinetic aspects
Book Synopsis Solar Light Harvesting with Nanocrystalline Semiconductors by : Oleksandr Stroyuk
Download or read book Solar Light Harvesting with Nanocrystalline Semiconductors written by Oleksandr Stroyuk and published by Springer. This book was released on 2017-11-07 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the use of nanocrystalline semiconductors in the harvesting of energy from solar light. It introduces promising methodology and technology which may help to increase the efficiency of light harvesting – one of the major challenges on the way toward sustainable energy generation.The book starts with a general introduction to the photochemistry of semiconductor nanocrystals. In the introductory chapter, the author also provides a frank and critical discussion on perspectives and limitations of the photocatalytic processes for solar light conversion including a historical account on semiconductor photocatalysis. He discusses that (and also why) it is a long way from laboratory prototypes to real sustainable technologies.The following chapters outline the conversion of solar light energy in semiconductor nanophotocatalysis on the one hand, and to (electric) energy in nanocrystalline semiconductor-based solar cells on the other hand. Topics addressed include nanophotocatalytic hydrogen production, artificial photosynthesis, quantum-dot sensitized liquid-junction and bulk heterojunction solar cells. Perspectives and opportunities, but also bottlenecks and limitations are discussed and the novel systems compared with established technology, such as classical silicon solar cells. While readers in this way learn to understand the basics and get introduced to the current research in the field, the final chapter provides them with the necessary knowledge about methodology, both in synthesis and characterization of semiconductor nanophotocatalysts and semiconductor nanomaterials, including examples for the practice of photocatalytic experiments and the studies of semiconductor-based solar cells.
Book Synopsis Photoelectrochemical Hydrogen Production by : Roel van de Krol
Download or read book Photoelectrochemical Hydrogen Production written by Roel van de Krol and published by Springer Science & Business Media. This book was released on 2011-11-09 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoelectrochemical Hydrogen Production describes the principles and materials challenges for the conversion of sunlight into hydrogen through water splitting at a semiconducting electrode. Readers will find an analysis of the solid state properties and materials requirements for semiconducting photo-electrodes, a detailed description of the semiconductor/electrolyte interface, in addition to the photo-electrochemical (PEC) cell. Experimental techniques to investigate both materials and PEC device performance are outlined, followed by an overview of the current state-of-the-art in PEC materials and devices, and combinatorial approaches towards the development of new materials. Finally, the economic and business perspectives of PEC devices are discussed, and promising future directions indicated. Photoelectrochemical Hydrogen Production is a one-stop resource for scientists, students and R&D practitioners starting in this field, providing both the theoretical background as well as useful practical information on photoelectrochemical measurement techniques. Experts in the field benefit from the chapters on current state-of-the-art materials/devices and future directions.
