Green Photocatalysts


Book Description

This book presents advanced photocatalytic technologies for wastewater treatment. The fabrication, surface modification, roles and mechanisms of green catalysts are detailed. The catalysts include nanostructured catalysts, semiconductors, metal and non-metal doped catalysts, surface plasmon materials, graphene oxide-based materials, polymer-based composite materials, heterogenous type I and type II catalysts.




Green Photocatalysts for Energy and Environmental Process


Book Description

This book describes green photocatalysts and their diverse applications in the fields of environmental sciences and energy. It especially takes a closer look at the removal of air and water pollutants, the generation of hydrogen, photo fuel cells, electrophotocatalysts, solar energy conversions, and green biophotocatalysts. Furthermore it also discusses on the role of catalysts along with their chemical reactions, challenges, past developments and directions for further research on photocatalysts. It includes recent developments of quantum dots (QDs) and photocatalytic applications of QDs such as carbon materials like carbon and graphene based QDs, metal, metal sulfide and metal oxide based QDs as well as a detailed review on various types of templates used for the preparation of porous g-C3N4 and its applications in detail. This is done with special reference to dye degradation, reduction of hexavalent Cr, and reduction of CO2 and for the evolution of H2 photocatalytically. This book offers an intriguing and useful guide for a broad readership in various fields of catalysis, material sciences, environment and energy.




Green Photocatalytic Semiconductors


Book Description

This book comprises a detailed overview on the role of photocatalysts for environmental remediation, hydrogen production and carbon dioxide reduction. Effective ways to enhance the photocatalytic activity of the material via doping, hybrid material, laser light and nanocomposites have been discussed in this book. The book also further elaborates the role of metal nanoparticles, rare earth doping, sensitizers, surface oxygen vacancy, interface engineering and band gap engineering for enhancing the photocatalytic activity. An approach to recover the photocatalytic material via immobilization is also presented. This book brings to light much of the recent research in the development of such semiconductor photocatalytic systems. The book will thus be of relevance to researchers in the field of: material science, environmental science & technology, photocatalytic applications, newer methods of energy generation & conversion and industrial applications.




Green Nanomaterials for Industrial Applications


Book Description

Green Nanomaterials for Industrial Applications explores the applications of nanomaterials for a variety of industry sectors, along with their environmental impacts, lifecycle analysis, safety and sustainability. This book brings together the industrial applications of nanomaterials, covering new trends and challenges. Significant properties, safety and sustainability and environmental impacts of synthesis routes are also explored, as are major industrial applications, including agriculture, medicine, communications, construction, energy, and in the military. This book is an important information source for those in research and development who want to gain a greater understanding of how nanotechnology is being used to create cheaper, more efficient products. Green nanomaterials have significant advantages including low cost, high efficiency, neutral environmental impact, and stability. Green Nanomaterials for Industrial Applications provides comprehensive information about green nanomaterials, their types, and methods for generation, characterization as well as their properties. Furthermore, this book also provides coverage of industrial scale fabrication methods for green nanomaterials and their applications for various industrial sectors at both experimental and theoretical models scales. This book is an important reference source for materials scientists, engineers and environmental scientists who want to learn more about how sustainable nanomaterials are being used in a range of industrial applications. - Explores industrial scale fabrication of green nanomaterials - Assesses environmental, legal, health and safety aspects - Discusses how green nanomaterials can be manufactured on an industrial scale




Heterogeneous Photocatalysis


Book Description

The book explains the principles and fundamentals of photocatalysis and highlights the current developments and future potential of the green-chemistry-oriented applications of various inorganic, organic, and hybrid photocatalysts. The book consists of eleven chapters, including the principles and fundamentals of heterogeneous photocatalysis; the mechanisms and dynamics of surface photocatalysis; research on TiO2-based composites with unique nanostructures; the latest developments and advances in exploiting photocatalyst alternatives to TiO2; and photocatalytic materials for applications other than the traditional degradation of pollutants, such as carbon dioxide reduction, water oxidation, a complete spectrum of selective organic transformations and water splitting by photocatalytic reduction. In addition, heterogeneized polyoxometalate materials for photocatalytic purposes and the proper design of photocatalytic reactors and modeling of light are also discussed. This book appeals to a wide readership of the academic and industrial researchers and it can also be used in the classroom for undergraduate and graduate students focusing on heterogeneous photocatalysis, sustainable chemistry, energy conversion and storage, nanotechnology, chemical engineering, environmental protection, optoelectronics, sensors, and surface and interface science. Juan Carlos Colmenares is a Professor at the Institute of Physical Chemistry, Polish Academy of Sciences, Poland. Yi-Jun Xu is a Professor at the State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, China.




Green Photo-active Nanomaterials


Book Description

Providing up-to-date coverage of green nanomaterials and systems, this book provides comprehensive information on nanostructured materials, including their applications in energy and environmental sciences. The book focusses on photo-active nanostructured materials, from the basic understanding of solar energy activation to their sustainable preparation and applications in environmental remediation and fuel production from biomass and carbon dioxide. It also examines the health and environmental impacts of photo-catalyst nanomaterials. This book is an important reference for researchers and industrial chemists working in the fields of energy and environmental remediation.




Sustainable Green Catalytic Processes


Book Description

This groundbreaking book offers an in-depth description of sustainable green catalytic processes that have emerged as the means to empower the existing protocols with greener, sustainable, and environmentally benign versions that hold enormous potential in industry and society. Growing worldwide concerns about environmental pollution and global warming have directed the attention of scientists towards approaches for developing sustainable protocols, and the need for employing greener and more sustainable catalytic approaches that are environmentally greener and more eco-friendly than current ones. Green and sustainable catalysts are the one class of catalysts that possess higher selectivity and activity, efficient recovery from the reaction medium, recyclability, cost-effectiveness and are prepared using environmentally benign preparation techniques. The most potent instrument in organic synthesis, and the cornerstone of green chemistry, is catalysis which has broadened the possibilities for organic transformations in the direction of a sustainable future. The catalyst has been playing a vital role, from the improvement of reaction conditions to enhanced selectivity towards the intended product and a decrease in the creation of byproducts. The purpose of this book is to highlight the developments made towards designing new catalysts (homogeneous, heterogeneous, organocatalyst, nanocatalyst, photocatalyst, nanophotocatalyst, biocatalyst, nanobiocatalyst, metal catalyst etc,.) and present the advancements in the field of chemical synthesis using greener catalytic routes with far-reaching applications. The other environmentally friendly method is the enzymatic synthesis of organic molecules, which substitutes safe reagents for those that imitate the biosynthetic route to synthesize the desired organic molecules. With its ability to produce transformations that occasionally enable the reduction of steps in a synthetic route, biophotocatalysis has long been recognized as a green technology and key to creating environmentally friendly and sustainable chemistry. The employment of sustainable green processes on the most crucial reaction steps of the synthetic protocol satisfies contemporary needs for environmentally friendly operations during the creation of valuable chemicals. Readers will find the book: details new catalysts development designs (homo and heterogeneous); presents the advancement of organic synthesis using greener catalytic routes with far-reaching applications; elaborates on preparation techniques for green and sustainable catalysts that possess higher activity, efficient recovery, and cost-effectiveness; discusses how to epitomize a green approach towards the preparation of organic moieties via enzymatic synthesis; analyzes nano-catalysis with green-based reagents and solvents that allow producers to follow the fundamental pillars of the green economy; elucidates green chemistry’s principles and metrics of the chemical’s life cycle and design through disposal. Audience The core audiences for this book include scientists and engineers working in green chemistry, materials science, photocatalysts, biotechnology, nanotechnology, waste minimization, and sustainability. This book is an excellent resource for graduate students, R&D experts, and researchers in academic and industrial fields of chemical synthesis.




Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment


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.




Environmentally Benign Photocatalysts


Book Description

Over the past few decades, mankind has observed an unprecedented and remarkable growth in industry, resulting in a more prosperous lifestyle for peoples of many countries. In developing countries, however, explosive industrial growth is just now beginning to raise the living standards of the people. Most industries, especially in these developing countries, are still powered by the burning of fossil fuels; con- quently, a lack of clean energy resources has caused environmental pollution on an unprecedented large and global scale. Toxic wastes have been relentlessly released into the air and water leading to serious and devastating environmental and health problems while endangering the planet and life itself with the effects of global warming. To address these urgent environmental issues, new catalytic and photocatalytic processes as well as open-atmospheric systems are presently being developed that can operate at room temperature while being totally clean and ef?cient and thus environmentally harmonious. Essential to technologies harnessing the abundant solar energy that reaches the earth are the highly functional photocatalytic proce- es that can utilize not only UV light, but also visible light.




Photocatalytic Degradation of Dyes


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