Copper-based Ternary Oxide Semiconductor for Solar Energy Conversion and Environmental Remediation PDF Download

Author: Mohammad Kabir Hossain
Publisher:
ISBN:
Category : Copper
Languages : en
Pages : 105

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Author: Janusz Nowotny
Publisher: CRC Press
ISBN: 1439848467
Category : Science
Languages : en
Pages : 419

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Book Description
Oxide semiconductors, including titanium dioxide (TiO2), are increasingly being considered as replacements for silicon in the development of the next generation of solar cells. Oxide Semiconductors for Solar Energy Conversion: Titanium Dioxide presents the basic properties of binary metal oxide semiconductors and the performance-related properties

Author: Venkataraman Thangadurai
Publisher: Trans Tech Publications Ltd
ISBN: 3035701954
Category : Technology & Engineering
Languages : en
Pages : 154

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Book Description
This volume is focused on the materials and devices for solar-to-chemical energy conversion. The introductory paper, by Alim and Bak, considers the basic concepts of the light-induced water oxidation by oxide semiconductors. This paper is concentrated on the photoreactivity of metal oxides, such as TiO2, with water and the related charge transfer during partial and total oxidation. The second paper of Yang et al provides an overview on the performance of TiO2 as photoanode in photoelectrochemical water oxidation. The paper of Nasir et al considers application of BiVO4 as photoelectrode for the generation of solar hydrogen fuel using water as the raw material. The work of Pastuovic et al is a treatise on the application of accelerator-based nuclear techniques in the characterisation of oxide semiconductors for solar energy conversion. This volume is addressed to those interested in the progress of research in oxide materials for solar energy conversion.

Author: Suresh Sagadevan
Publisher: Elsevier
ISBN: 0443138737
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description
Copper Oxides and Related Materials: Properties, Synthesis, and Applications provides a thorough description of the physical, structural, electrophysical, chemical, electronic, and biological properties of copper oxides in one convenient volume. The book focuses on human and environmental aspects, paying particular attention to health, environmental remediation, electronic applications, energy storage, and solar energy conversion. Copper oxides are widely used in many applications such as antibacterial, antimicrobial, and anticancer treatments; as biocide agents against phytopathogens or hospital-acquired diseases; and, they are also a standard material used for superconductivity. This volume thoroughly explores the most exciting and relevant applications of copper oxides, a class of material with a sometimes bewilderingly wide array of potential uses. - Provides detailed descriptions of the physical, structural, electrophysical, chemical, electronic, and biological properties of copper oxides - Analyzes a wide range of copper oxide-based applications focusing on human and environmental needs - Describes the latest approaches in the synthesis of copper oxides

Author: Abegayl Lorenda Shara-Lynn Thomas
Publisher:
ISBN:
Category : Metal oxide semiconductors
Languages : en
Pages : 91

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The quest for stable and efficient photocatalytic materials beyond TiO2 and WO3 has over the years led to the development of new materials that possess more optimal interfacial energetics. This dissertation study focused on using for the first time a novel method, solution combustion synthesis (SCS), to prepare two distinct families of binary metal-based oxide semiconductor materials. Detailed studies on material characteristics and applications were carried out on tungsten- and niobium-based oxide semiconductors with varying principal metals. Initial emphasis was placed on the SCS of tungsten-based oxide semiconductors (ZnWO4, CuWO4, and Ag2WO4). The influence of different tungsten precursors on the resultant product was of particular relevance to this study, with the most significant effects highlighted. Upon characterization, each sample's photocatalytic activity towards methyl orange dye degradation was studied, and benchmarked against a commercial oxide sample obtained by solid-state ceramic synthesis. Detailed analysis highlighted the importance of the SCS process as a time- and energy-efficient method to produce crystalline nano-sized materials even without additional or excessive heat treatment. It was observed that different tungstate precursors do influence the structural and morphological make-up of the resulting materials. The as-synthesized tungstate materials showed good photocatalytic performance for the degradation of methyl orange dye, while taking into account specific surface area and adsorbed dye amount on the surface of the material. Like the tungstates, niobium-based oxide semiconductors CuNb2O6 and ZnNb2O6 were synthesized for the first time via SCS. Particular attention was placed on the crystal structures formed while using an oxalate niobium precursor during the reaction process. X-ray diffraction patterns yielded a multiphase structure for the ZnNb2O6 and a single phase structure for CuNb2O6. Photoelectrochemical (PEC) measurements were used both as a characterization tool as well as an application for CO2 reduction. The PEC data were consistent with an n-type and p-type semiconductor for ZnNb2O6 and CuNb2O6 respectively. Good phototelectrochemical behavior was observed for CuNb2O6 with stable, high photocurrents suggesting a suitable material for CO2 reduction in 0.1 M NaHCO3 + CO2 medium. Overall, this study illustrates the utility of SCS for the time- and energy-efficient synthesis of metal tungstates and niobates for solar energy conversion and environmental remediation applications.

Author: Sean Patrick Berglund
Publisher:
ISBN:
Category :
Languages : en
Pages : 440

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The sun is a vast source of renewable energy, which can potentially be used to satisfy the world's increasing energy demand. Yet many material challenges need to be overcome before solar energy conversion can be implemented on a larger scale. This dissertation focuses on materials used for solar energy conversion through photo-electrochemical (PEC) processes. It discusses methods for improving PEC materials, namely mixed metal oxide semiconductors, by nanostructuring, incorporation of additional elements, and application surface electrocatalysts. In this dissertation several material synthesis techniques are detailed. A high vacuum synthesis process known as reactive ballistic deposition (RBD) is used to synthesize nanostructured bismuth vanadate (BiVO4), which is studied for PEC water oxidation. Additionally, ballistic deposition (BD) is used to incorporate Mo and W into nanostructured BiVO4 to improve the PEC activity. An array dispenser and scanner system is used to incorporate metals into copper oxide (CuO) and copper bismuth oxide (CuBi2O4) and over 3,000 unique material compositions are tested for cathodic photoactivity. The system is also used to test 35 elements as single component metal oxides, mixed metal oxides, and dopants for titanium dioxide (TiO2) for use in dye-sensitized solar cells (DSCs). Lastly, RBD is used to deposit tungsten semicarbide (W2C) onto p-type silicon (p-type) substrates as an electrocatalyst for PEC proton reduction. In many cases, the synthesis techniques and new material combinations presented in this dissertation result in improved PEC performance. The materials are thoroughly assessed and characterized to gain insights into their nanostructure, chemical composition, light absorption, charge transport properties, catalytic activity, and stability.

Author: Mohammad Mansoob Khan
Publisher: Elsevier
ISBN: 0128209178
Category : Technology & Engineering
Languages : en
Pages : 378

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Book Description
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

Author: Muhammad Nihal Naseer
Publisher: Springer Nature
ISBN: 3031684648
Category :
Languages : en
Pages : 623

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Author: Likun Pan
Publisher: BoD – Books on Demand
ISBN: 9535122452
Category : Technology & Engineering
Languages : en
Pages : 652

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The book summarizes the current state of the know-how in the field of perovskite materials: synthesis, characterization, properties, and applications. Most chapters include a review on the actual knowledge and cutting-edge research results. Thus, this book is an essential source of reference for scientists with research fields in energy, physics, chemistry and materials. It is also a suitable reading material for graduate students.

Author: Aracely Hernández-Ramírez
Publisher: Springer
ISBN: 3319109995
Category : Science
Languages : en
Pages : 298

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Book Description
This critical volume examines the different methods used for the synthesis of a great number of photocatalysts, including TiO2, ZnO and other modified semiconductors, as well as characterization techniques used for determining the optical, structural and morphological properties of the semiconducting materials. Additionally, the authors discuss photoelectrochemical methods for determining the light activity of the photocatalytic semiconductors by means of measurement of properties such as band gap energy, flat band potential and kinetics of hole and electron transfer. Photocatalytic Semiconductors: Synthesis, Characterization and Environmental Applications provide an overview of the semiconductor materials from first- to third-generation photocatalysts and their applications in wastewater treatment and water disinfection. The book further presents economic and toxicological aspects in the production and application of photocatalytic materials.