Microwave Solution Combustion synthesis of Visible lightresponsive Photocatalyst for degradation of Reactive turquoise Blue (RB21) dye PDF Download
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Author: RAHUL JARARIYA
Publisher: Blue Rose Publishers
ISBN:
Category : Crafts & Hobbies
Languages : en
Pages : 110
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Book Description
Currently, colour removal dye degradation from synthetic wastewater of RB21 dye using photocatalysis with numerous spinel catalysts created in different methods. The reactive turquoise blue (RB21) dye, which belongs to the phthalocyanine group and has a strong azo link and a Cu2+ metal complex, is a very stable molecule that is difficult to degrade. Textile, paper, and leather sectors all employ reactive dyes. Spinel ferrites are oxides with the general formula AB2O4, where A and B are rare earth, alkali metal, and transition metal cations. Researchers have used spinel catalysts in photocatalytic degradation technology to combat wastewater pollution caused by dyes. The present research is focused on the creation of Magnesium and Cobalt ferrites spinel catalysts for the breakdown of RB21 dye. The most efficient photocatalyst was chosen, and the catalyst dosage, pH, dye concentration, reactor temperature, irradiation time, and other parameters were optimized. In the present work spinel catalysts (CoFe2O4, MgFe2O4, Mg0.5Co0.5Fe2O4, and Ni0.5Co0.5Fe2O4) were prepared by different methods. The operating conditions for spinel synthesis were observed at 146˚C commencing combustion of spinel ferrites. The experiments were performed under varying light sources like a 700W microwave system, and a Visible-Light photocatalytic reactor. The photocatalytic activity was carried out using a light source (two 9W LED bulbs, Halonix) and stirring the sample (400 rpm, 25°C).
Author: RAHUL JARARIYA
Publisher: Blue Rose Publishers
ISBN:
Category : Crafts & Hobbies
Languages : en
Pages : 110
Get Book Here
Book Description
Currently, colour removal dye degradation from synthetic wastewater of RB21 dye using photocatalysis with numerous spinel catalysts created in different methods. The reactive turquoise blue (RB21) dye, which belongs to the phthalocyanine group and has a strong azo link and a Cu2+ metal complex, is a very stable molecule that is difficult to degrade. Textile, paper, and leather sectors all employ reactive dyes. Spinel ferrites are oxides with the general formula AB2O4, where A and B are rare earth, alkali metal, and transition metal cations. Researchers have used spinel catalysts in photocatalytic degradation technology to combat wastewater pollution caused by dyes. The present research is focused on the creation of Magnesium and Cobalt ferrites spinel catalysts for the breakdown of RB21 dye. The most efficient photocatalyst was chosen, and the catalyst dosage, pH, dye concentration, reactor temperature, irradiation time, and other parameters were optimized. In the present work spinel catalysts (CoFe2O4, MgFe2O4, Mg0.5Co0.5Fe2O4, and Ni0.5Co0.5Fe2O4) were prepared by different methods. The operating conditions for spinel synthesis were observed at 146˚C commencing combustion of spinel ferrites. The experiments were performed under varying light sources like a 700W microwave system, and a Visible-Light photocatalytic reactor. The photocatalytic activity was carried out using a light source (two 9W LED bulbs, Halonix) and stirring the sample (400 rpm, 25°C).
Author: Luqman Jameel Rather
Publisher: John Wiley & Sons
ISBN: 1119710146
Category : Science
Languages : en
Pages : 432
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Book Description
With the public enhanced awareness towards eco-preservation, eco-safety and health concerns, environmentally benign, nontoxic and sustainable bioresource materials produced mainly from non-food crops have revolutionized all industrial sectors particularly textile industry. In recent years, textile industries in developed countries are getting increasing interest in global interest due to the varied and changing world market conditions in terms of price, durability and fiber mixtures as well as design, colors, weight, ease of handling and product safety. The increasing environmental and health concerns owing to the use of large quantities of water and hazardous chemicals in conventional textile finishing processes lead to the design and development of new dyeing strategies and technologies. Effluents produced from these textiles wet processing industries are very diverse in chemical composition, ranging from inorganic finishing agents, surfactants, chlorine compounds, salts, total phosphate to polymers and organic products. This aspect forced western countries to exploit their high technical skills in the advancements of textile materials for high quality technical performances, and development of cleaner production technologies for cost effective and value-added textile materials. Therefore, vast and effective research investigations have been undertaken all over the world to minimize the negative environmental impact of synthetic chemical agents through the sustainable harvest of eco-friendly bioresource materials. The book will discuss following research developments in academic and industry: Improvement in dye extraction and its applications Impact of textile dyeing on environment Textile finishing by natural and ecofriendly means Natural dyes as environmental-friendly bioresource products Textile effluent remediation via physical, chemical and biological processes.
Author: Sushma Dave
Publisher: Elsevier
ISBN: 0128242027
Category : Technology & Engineering
Languages : en
Pages : 796
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Book Description
Photocatalytic Degradation of Dyes: Current Trends and Future Perspectives covers in detail current trends and future aspects on photocatalytic degradation of organic dyes using novel photocatalytic techniques such as metallic nanoparticles, heterogeneous and hybrid systems using visible light irradiation. It highlights the most recent scientific and technological achievements and importance of degradation of dyes in the textile effluent by simple environmental friendly approaches using eco-friendly catalysts. It is of assistance to everyone interested in bioremediation of effluents: professionals, consulting engineers, academicians, and research scholars as well. - Describes the basic photocatalytic techniques and their application in wastewater treatment - Covers the key reactive species accounting for the photodegradation of different dyes, providing helpful guidelines that could be applied to foster the development of efficient photodegradation systems - Includes Description of a wide variety of catalysts and their application in degradation of dyes in the effluent of variable matrices (such as textile effluent, pharmaceutical industry effluent, food industry effluent) - Presents the application of doped semiconductors in the degradation of dyes, hybrid systems and their importance in the dye degradation - Describes the biological synthesis of metallic nanostructures and their use in dye degradation using visible range of light irradiation - Discusses the mechanistic aspect of the dye degradation using photo catalysts
Author: Olga Sacco
Publisher: Elsevier
ISBN: 0128183357
Category : Technology & Engineering
Languages : en
Pages : 232
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Book Description
Visible Light Active Structured Photocatalysts for the Removal of Emerging Contaminants: Science and Engineering addresses the potential role of visible active photocatalytic processes for the removal of emerging contaminants. The book discusses the classification, sources and potential risks of emerging pollutants in water as well as the different synthesis methods of visible active structured photocatalysts with relation to their applications in photocatalytic processes for the removal of organic and inorganic emerging contaminants. Finally, the possible reaction pathways occurring during the visible or solar photocatalytic processes together with toxicity assessment are discussed. The book is a useful guide for academics, researchers and technicians in chemical engineering, chemistry and environmental sciences. - Defines emerging contaminants and what can be included in that group of contaminants commonly named "contaminants of emerging concern" - Presents different synthesis methods of visible active structured photocatalysts and their applications in solar or visible light photocatalytic systems for the removal of organic and inorganic emerging contaminants - Analyzes reaction pathways that occur during the visible or solar photocatalytic processes, also including toxicity assessments
Author: Elvis Fosso-Kankeu
Publisher: John Wiley & Sons
ISBN: 1119631394
Category : Science
Languages : en
Pages : 320
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Book Description
Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment comprehensively covers a range of topics aiming to promote the implementation of photocatalysis at large scale through provision of facile and green methods for catalysts synthesis and elucidation of pollutants degradation mechanisms. This book is divided into two main parts namely “Synthesis of effective photocatalysts” (Part I) and “Mechanisms of the photocatalytic degradation of various pollutants” (Part II). The first part focuses on the exploration of various strategies to synthesize sustainable and effective photocatalysts. The second part of the book provides an insights into the photocatalytic degradation mechanisms and pathways under ultraviolet and visible light irradiation, as well as the challenges faced by this technology and its future prospects.
Author: Xinchen Wang
Publisher: John Wiley & Sons
ISBN: 3527350500
Category : Technology & Engineering
Languages : en
Pages : 389
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Book Description
UV-Visible Photocatalysis for Clean Energy Production and Pollution Remediation Comprehensive resource detailing fundamentals of photocatalysis, clean energy production, and pollution treatment, as well as recent developments in each field UV-Visible Photocatalysis for Clean Energy Production and Pollution Remediation: Materials, Reaction Mechanisms, and Applications provides current developments in photocatalytic reactions for both inorganic and organic-based materials which operate under UV-visible light or sunlight irradiation, with a focus on the fundamentals and applications in clean energy production and pollution remediation. The text curates interesting and important research surrounding photocatalysis for hydrogen production, including the fundamentals and photocatalytic remediation of our better environments, which covers the reduction of CO2 and fixation of N2 with H2O under UV-visible light or sunlight irradiation. The first chapter of the book introduces these diverse subjects by including a brief history of the developments of photocatalysis research since around the 1960s. Specific sample topics covered in this book include: Visible-light active photocatalysts in pollutant degradation and conversion with simultaneous hydrogen production Application of S-scheme heterojunction photocatalyst and the role of the defects on the photocatalytic reactions on ZnO Strategies for promoting overall water splitting with particulate photocatalysts via single-step visible-light photoexcitation Polymeric carbon nitride-based materials in aqueous suspensions for water photo-splitting and photo-reforming of biomass aqueous solutions to generate H2 Visible light-responsive TiO2 thin film photocatalysts for the separate evolution of H2 and O2 from water For chemists, scientists, physicists, and engineers across a wide range of disciplines, UV-Visible Photocatalysis for Clean Energy Production and Pollution Remediation is an essential resource for understanding current developments in photocatalytic reactions on both inorganic and organic-based materials which operate under UV-visible light or sunlight irradiation.
Author: Srabanti Ghosh
Publisher: John Wiley & Sons
ISBN: 3527808159
Category : Science
Languages : en
Pages : 752
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Book Description
A comprehensive and timely overview of this important and hot topic, with special emphasis placed on environmental applications and the potential for solar light harvesting. Following introductory chapters on environmental photocatalysis, water splitting, and applications in synthetic chemistry, further chapters focus on the synthesis and design of photocatalysts, solar energy conversion, and such environmental aspects as the removal of water pollutants, photocatalytic conversion of CO2. Besides metal oxide-based photocatalysts, the authors cover other relevant material classes including carbon-based nanomaterials and novel hybrid materials. Chapters on mechanistic aspects, computational modeling of photocatalysis and Challenges and perspectives of solar reactor design for industrial applications complete this unique survey of the subject. With its in-depth discussions ranging from a comprehensive understanding to the engineering of materials and applied devices, this is an invaluable resource for a range of disciplines.
Author: David James Martin
Publisher: Springer
ISBN: 3319184881
Category : Science
Languages : en
Pages : 170
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Book Description
This thesis describes novel strategies for the rational design of several cutting-edge high-efficiency photocatalysts, for applications such as water photooxidation, reduction, and overall splitting using a Z-Scheme system. As such, it focuses on efficient strategies for reducing energy loss by controlling charge transfer and separation, including novel faceted forms of silver phosphate for water photooxidation at record high rates, surface-basic highly polymerised graphitic carbon nitride for extremely efficient hydrogen production, and the first example of overall water splitting using a graphitic carbon nitride-based Z-Scheme system. Photocatalytic water splitting using solar irradiation can potentially offer a zero-carbon renewable energy source, yielding hydrogen and oxygen as clean products. These two ‘solar’ products can be used directly in fuel cells or combustion to provide clean electricity or other energy. Alternatively they can be utilised as separate entities for feedstock-based reactions, and are considered to be the two cornerstones of hydrogenation and oxidation reactions, including the production of methanol as a safe/portable fuel, or conventional catalytic reactions such as Fischer-Tropsch synthesis and ethylene oxide production. The main driving force behind the investigation is the fact that no photocatalyst system has yet reported combined high efficiency, high stability, and cost effectiveness; though cheap and stable, most suffer from low efficiency.
Author: Gaurav Sharma
Publisher: Materials Research Forum LLC
ISBN: 164490134X
Category : Technology & Engineering
Languages : en
Pages : 341
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Book Description
Photocatalysis is important in fighting environmental pollution, such as pharmaceutical effluents, dyes, pesticides and endocrine disruptors. It is also used for the production of clean energy, e.g. by way of hydrogen production from watersplitting, or CO2 conversion into fuels. Further, photocatalytic N2 fixation is promising for achieving sustainable ammonia synthesis. The book discusses new materials and reaction engineering techniques, such as heterojunction formations, composites, ion exchangers, photocatalytic membranes, etc. Keywords: Photocatalysis, Pollutant Degradation and Mineralization, Pharmaceutical Effluents, Dyes, Pesticides, Endocrine Disruptors, Water Detoxification, Photocatalytic Hydrogen Production, CO2 Conversion into Fuels, N2 Fixation, Degradation of Organic Molecules, Heavy Metal Removal from Water, Photocatalytic Membranes, Carbon Nitride for Photocatalytic Applications, Carbon Nanotubes, Nanohybrids, Composite Ion Exchangers, Perovskites-based Nano Heterojunctions.
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.
