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Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
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:
Author : Rajesh J. Tayade
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3035730210
Total Pages : 180 pages
Book Rating : 4.0/5 (357 download)
Download or read book Photocatalytic Materials & Surfaces for Environmental Cleanup IV written by Rajesh J. Tayade and published by Trans Tech Publications Ltd. This book was released on 2016-05-19 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special topic volume on Photocatalytic Materials and Surfaces for Environmental Cleanup IV addresses photocatalysis in wide sense focus on the environmental applications of photocatalytic materials. Photocatalytic materials had been widely studied for the various applications such as water and air purification, CO2 reduction, hydrogen generation, and development of auto-cleaning surfaces etc. The present special topic volume covers the application of various photocatalytic materials for CO2 reduction, hydrogen generation, removal of pesticides, degradation of organic pollutant and recent development in the fabrication of photocatalytic reactors.
Author : Nitikan Fangern
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (86 download)
Download or read book Synthesis and Characterization of Nanocrystalline Thin Films Titanium Dioxide for Photocatalytic Degradation of Reactive Blue 19 written by Nitikan Fangern and published by . This book was released on 2011 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Author : Nor Amalina Hussain
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (953 download)
Download or read book Preparation, Characterization and Activity Evaluation of Multi-component Photocatalyst Under Visible Light Irradiation written by Nor Amalina Hussain and published by . This book was released on 2012 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the present work is to synthesize and characterize P-type, N-type and P-N type photocatalysts for wastewater treatment, to compare photocatalytic activity of different catalysts for dye degradation and to study the effect of visible light irradiation of difference parameter of photocatalytic reaction. Multicomponent P-type and P-N type photocatalyst were synthesized and characterized by XRD, SEM and BET. The visible light is used to study the catalyst activity for the composition of dye using photocatalyst. However, the photocatalytic activity under visible light is low. In order to increase its activity, multi-component photocatalyst is used. P-N-type semiconductor is used as the photocatalysts as it improve the photocatalytic activity using couple catalyst by accelerating the separation of electron-hole pair as well as to efficiently extend the region of visible light utilization. This research will demonstrated the feasibilities of the photocatalytic degradation of Methylene Blue for treating wastewaters where it is depends by varying the initial concentrations of Methylene Blue, addition amounts of P-type photocatalyst and the light irradiation. As a result, the photocatalytic activity followed the series of CaFe2O4-V2O5 ” CaFe2O4-WO3 > CaFe2O4. Based on the findings of this study, some recommendation can be made which are calcinations of the catalyst with different temperature, effect of visible light power intensity and effect of different dopants and their characterization by XRD and XPS.
Author : Suresh C. Ameta
Publisher : Academic Press
ISBN 13 : 0128105259
Total Pages : 430 pages
Book Rating : 4.1/5 (281 download)
Download or read book Advanced Oxidation Processes for Wastewater Treatment written by Suresh C. Ameta and published by Academic Press. This book was released on 2018-02-19 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Oxidation Processes for Waste Water Treatment: Emerging Green Chemical Technology is a complete resource covering the fundamentals and applications of all Advanced Oxidation Processes (AOPs). This book presents the most up-to-date research on AOPs and makes the argument that AOPs offer an eco-friendly method of wastewater treatment. In addition to an overview of the fundamentals and applications, it details the reactive species involved, along with sections on reactor designs, thus helping readers understand and implement these methods. Presents in-depth coverage of all types of Advanced Oxidation Processes, including Super Critical Water Oxidation, Photo-Fenton and Like Processes Includes a fundamental review, applications, reactive species and reactor designs Reviews applications across waste types, including industrial waste, domestic and municipal sewage, and hospital wastes
Author : Shawn Kendale Blue
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (584 download)
Download or read book Synthesis and Characterization of Titania-based Catalysts for Photocatalytic Applications written by Shawn Kendale Blue and published by . This book was released on 2003 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies the synthesis of two types of titanium-based catalysts, ultrasonically treated titania powder and zeolite-supported TiO2. The synthesized catalysts are characterized utilizing both SEM (Scanning Electron Microscopy) and elemental analysis. The synthesized catalysts are then kinetically characterized in the degradation of direct black 38 azo dye.
Author : Hannah M. McIntyre
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Evaluation of the Degradation of Methylene Blue Using Photocatalytic Materials written by Hannah M. McIntyre and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-point organic pollutants in groundwater, stormwater, wastewater, and drinking water are a growing problem in the environment, which lack effective and efficient treatment technologies. Photocatalytic treatment of organic contaminants in aqueous or liquid mediums has gained interest due to their potential for effective degradation. Common industrial treatment practices utilize a slurry reactor, suspending the photocatalyst in the contaminated solution. However, photocatalytic slurry reactors are hindered by solution turbidity, dissolved salt content, and absorbance of light. Research presented here introduces two novel engineered material combinations which immobilize the photocatalyst for effective and sustainable degradation of organic pollutants, one in-situ and one ex-situ. Methylene blue was chosen as a surrogate contaminant for both studies considering well studied degradation pathway literature. The in-situ method investigates immobilizing titanium dioxide in cement paste by functionalizing it with maleic anhydride (Ti-MAH). This process not only immobilizes the photocatalyst but also increases the reactivity of the catalysts. Preparation of the Ti-MAH is performed by permanently bonding the maleic anhydride to titanium dioxide in methanol, drying and powdering residual material, and then inter-grinding the preparation with cement during mixing. When compared with OPC, the Ti-MAH cured cement paste is more reactive under a wider range of light wavelengths, possesses a higher band gap, sustains this heightened reactivity over multiple testing iterations, and treats organics effectively. Amorphous silica within the calcium-silica-hydrate, C-S-H, is theorized to bond to the powdered Ti-MAH during curing. Verification of silica bonding to the titanium by way of MAH was demonstrated by FTIR spectra, SEM imagery, and XRD. Creating a sustainable and passive photocatalytic cement that precisely bonds silicon to the Ti-MAH is useful for organic contaminant in urban stormwater but use can translate to other applications because the Ti-MAH bonds readily with any amorphous silica such as glass materials, paints and coatings, optics and LEDS, among many others. The ex-situ method introduces the development and application of a novel, photocatalytic, porous silica-based granular media (SGM) to be used in a packed bed column reactor. SGM retains the cross-linked structure developed during synthesis through a combination of foaming agent addition and activation temperature. The resultant media has a high porosity of 88%, with a specific surface area averaging 150 m2/g. Photocatalytic capabilities are further enhanced as the resultant structure fixes the photocatalyst within the translucent matrix. SGM is capable of photocatalysis combined with diffusion of nucleophiles, electrophiles, and salts from the pore space. The photocatalytic efficiencies of SGM at various silica contents were quantified in batch reactors using methylene blue destruction over time and cycles. Methylene blue concentrations of 10mg/L were effectively degraded (>90%) within 40 minutes. This effectiveness was retained over multiple cycles and various methylene blue concentrations. SGM is a passive and cost-effective granular treatment system technology which can translate to other organic contaminants and industrial processes. The two treatment methods use varying processes and materials to meet the fundamental goal of immobilizing the photocatalysts for a sustained attack on organic pollutants. The studies present the experimental methods of both remedial technologies in sequence from material development and immobilization of the photocatalysts to assessment of reactivity and longevity. Herein, batch reactors are utilized to individually test each photocatalytic material and determine their feasibility to be up-scaled into an onsite pilot-test.
Author : Richy Hauptmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book Synthesis, Characterization and Application of Pyrimidopteridine Based Photocatalysts written by Richy Hauptmann and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: PPTNOs are structurally related to flavins and share their reactivity to a certain degree. This similarity was shown in isomerization and oxidation reactions. PPTNOs are very potent photocatalysts that even enable oxidation reactions of mono substituted amines. The potency of the PPTNOS was revealed in a photocatalytic hydroamination using stilbenes and mono substituted amines. Subsequently a photocatalytic trifluoromethylation was investigated to further show the applicability of these photocatalysts.eng
Author : Ana Laura Luna Barron
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (958 download)
Download or read book Synthesis and Characterization of New Modified Photocatalysts for Environmental and Energy Applications written by Ana Laura Luna Barron and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, environment pollution and energy crisis are widely concerned all over the world. It is an urgent task to develop environment-friendly technologies for alternative clean energies. Photocatalysis is one of the most promising methods for such subjects. The most used semiconductor in photocatalysis is TiO2 due to its excellent physical and chemical properties, high availability and low cost. The modification of TiO2 with metal nanoparticles has demonstrated have a beneficial effect in the photocatalytic activity of TiO2.Identifying the factors that govern the kinetics of the photocatalytic processes and understanding the role that metal nanoparticles play is inherent to achieve the desired goal of developing more efficient photocatalytic systems.Although great strides have been made in the study of the effect of surface modification of TiO2 with mono- and bimetallic NPs on its photocatalytic activity, a lot still remains unknown. Most of the investigations have been based on the study of kinetics or mechanisms involved in photocatalysis. There are few reported studies, which integrate the absorption, dynamics of charge carriers and photocatalytic activity.The later has motivated the development of the present work, having the main objective to study systematically the effect of metal NPs on titania surface in the three principals steps of the photocatalytic processes: (1) absorption of light (generation of electron-hole pair), (2) dynamic of charge carriers, and (3) efficiency of the photocatalytic activity.
Author : Chiun-Teh Ho
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (714 download)
Download or read book Synthesis and Characterization of Tantalum (oxy)nitride Nanoparticles written by Chiun-Teh Ho and published by . This book was released on 2010 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fabian I. Ezema
Publisher : Springer Nature
ISBN 13 : 3030684628
Total Pages : 926 pages
Book Rating : 4.0/5 (36 download)
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.
Author : Juan M. Coronado
Publisher : Springer Science & Business Media
ISBN 13 : 1447150619
Total Pages : 352 pages
Book Rating : 4.4/5 (471 download)
Download or read book Design of Advanced Photocatalytic Materials for Energy and Environmental Applications written by Juan M. Coronado and published by Springer Science & Business Media. This book was released on 2013-05-27 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research for the development of more efficient photocatalysts has experienced an almost exponential growth since its popularization in early 1970’s. Despite the advantages of the widely used TiO2, the yield of the conversion of sun power into chemical energy that can be achieved with this material is limited prompting the research and development of a number of structural, morphological and chemical modifications of TiO2 , as well as a number of novel photocatalysts with very different composition. Design of Advanced Photocatalytic Materials for Energy and Environmental Applications provides a systematic account of the current understanding of the relationships between the physicochemical properties of the catalysts and photoactivity. The already long list of photocatalysts phases and their modifications is increasing day by day. By approaching this field from a material sciences angle, an integrated view allows readers to consider the diversity of photocatalysts globally and in connection with other technologies. Design of Advanced Photocatalytic Materials for Energy and Environmental Applications provides a valuable road-map, outlining the common principles lying behind the diversity of materials, but also delimiting the imprecise border between the contrasted results and the most speculative studies. This broad approach makes it ideal for specialist but also for engineers, researchers and students in related fields.
Author : Mu. Naushad
Publisher : Springer
ISBN 13 : 331975484X
Total Pages : 476 pages
Book Rating : 4.3/5 (197 download)
Download or read book A New Generation Material Graphene: Applications in Water Technology written by Mu. Naushad and published by Springer. This book was released on 2018-06-20 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a unique collection of up-to-date applications of graphene for water science. Because water is an invaluable resource and the intelligent use and maintenance of water supplies is one of the most important and crucial challenges that stand before mankind, new technologies are constantly being sought to lower the cost and footprint of processes that make use of water resources as potable water as well as water for agriculture and industry, which are always in desperate demand. Much research is focused on graphene for different water treatment uses. Graphene, whose discovery won the 2010 Nobel Prize in physics, has been a shining star in the material science in the past few years. Owing to its interesting electrical, optical, mechanical and chemical properties, graphene has found potential applications in a wide range of areas, including water purification technology. A new type of graphene-based filter could be the key to managing the global water crisis. According to the World Economic Forum's Global Risks Report, lack of access to safe, clean water is the biggest risk to society over the coming decade. Yet some of these risks could be mitigated by the development of this filter, which is so strong and stable that it can be used for extended periods in the harshest corrosive environments, and with less maintenance than other filters on the market. The graphene-based filter could be used to filter chemicals, viruses, or bacteria from a range of liquids. It could be used to purify water, dairy products or wine, or in the production of pharmaceuticals. This book provides practical information to all those who are involved in this field.
Author : Someshwar Pola
Publisher : BoD – Books on Demand
ISBN 13 : 1789856655
Total Pages : 230 pages
Book Rating : 4.7/5 (898 download)
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.
Author : Ashutosh Tiwari
Publisher : John Wiley & Sons
ISBN 13 : 111924272X
Total Pages : 448 pages
Book Rating : 4.1/5 (192 download)
Download or read book Advanced Ceramic Materials written by Ashutosh Tiwari and published by John Wiley & Sons. This book was released on 2016-08-12 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic materials are inorganic and non-metallic porcelains, tiles, enamels, cements, glasses and refractory bricks. Today, "ceramics" has gained a wider meaning as a new generation of materials influence on our lives; electronics, computers, communications, aerospace and other industries rely on a number of their uses. In general, advanced ceramic materials include electro-ceramics, optoelectronic-ceramics, superconductive ceramics and the more recent development of piezoelectric and dielectric ceramics. They can be considered for their features including mechanical properties, decorative textures, environmental uses, energy applications, as well as their usage in bio-ceramics, composites, functionally graded materials, intelligent ceramics and so on. Advanced Ceramic Materials brings together a group of subject matter experts who describe innovative methodologies and strategies adopted in the research and development of the advanced ceramic materials. The book is written for readers from diverse backgrounds across chemistry, physics, materials science and engineering, medical science, pharmacy, environmental technology, biotechnology, and biomedical engineering. It offers a comprehensive view of cutting-edge research on ceramic materials and technologies. Divided into 3 parts concerning design, composites and functionality, the topics discussed include: Chemical strategies of epitaxial oxide ceramics nanomaterials Biphasic, triphasic and multiphasic calcium orthophosphates Microwave assisted processing of advanced ceramic composites Continuous fiber reinforced ceramic matrix composites Yytria and magnesia doped alumina ceramic Oxidation induced crack healing SWCNTs vs MWCNTs reinforcement agents Organic and inorganic wastes in clay brick production Functional tantalum oxides Application of silver tin research on hydroxyapatite
Author : Muthupandian Ashokkumar
Publisher :
ISBN 13 : 9789812874702
Total Pages : pages
Book Rating : 4.8/5 (747 download)
Download or read book Handbook of Ultrasonics and Sonochemistry written by Muthupandian Ashokkumar and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
