Photocatalytic Degradation Of Dyes

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

This book looks at the recent developments in the area of photocatalytic degradation of dyes using photocatalytic techniques, for example by means of various nanoparticles, heterogeneous, and hybrid systems. Dyes are one of the major groups of water pollutants and are widely used in a diverse range of industries. The toxic effects of organic dyes in wastewater can have a great environmental impact, therefore there is significant interest and need to remove these dyes effectively and efficiently during wastewater treatment. This volume covers a plethora of basics on the photochemistry of dyes and provides information on technological perspectives including reactor designs and process intensification. Since many industries release a significant amount of colored effluents, which are toxic and difficult to remove by conventional methods, the comprehensive studies herein will contribute to helping reduce the impact of colored effluents in wastewater on the environment.

Polyoxometalates (POMs) have fascinating structures and promising properties. The arsenomolybdates, as an important branch of POMs, are outstanding photocatalysts for organic dyes. In this work, we selected organic dyes to evaluate the photocatalytic activity of arsenomolybdates under UV light, containing compared with photocatalytic activity of different structural arsenomolybdates, stability, and the photocatalytic reaction mechanism of arsenomolybdates as photocatalyst. The arsenomolybdates may be used to as environmental photocatalysts for the degrading of organic dyes and solving the problem of environmental pollution.

The treatment of highly colored wastewater containing hazardous industrial chemicals and dyes is one of the growing needs of the present time. The conventional wastewater treatment does not always satisfactorily cleanse the wastewater containing dyes. In order to cleanse water of these extra-stable organics, so-called advance oxygen processes (AOPs) have been developed. The aim of these methods is to mineralize the pollutants to CO2, H2O and mineral acids and salts. Titanium dioxide photocatalysis belongs to the group of AOPs and has been extensively studied over the last 20 years. The use of TiO2 as slurries in wastewater treatment has some disadvantages: the separation of fine particles is slow and penetration of light is limited. These problems can be minimized by supporting TiO2 on various materials. The goals of present work were: (1) preparation of immobilized TiO2 films by various techniques and their characterization; (2) study the photocatalytic degradation of aqueous amaranth solution using the prepared TiO2 films; (3) study the combined effect of photodegradation and adsorption; (4) comparing the performance of prepared films.

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.

This book is a printed edition of the Special Issue "Photocatalysis" that was published in Molecules

Reflecting the rapid growth of nanotechnology research and the potential impact of the growing energy crisis, Energy Efficiency and Renewable Energy Through Nanotechnology provides comprehensive coverage of cutting-edge research in the energy-related fields of nanoscience and nanotechnology, which aim to improve energy efficiency and the generation of renewable energy. Energy Efficiency and Renewable Energy Through Nanotechnology tightly correlates nanotechnology with energy issues in a general, comprehensive way that makes it not only suitable as a desk reference for research, but also as a knowledge resource for the non-expert general public. Readers will find Energy Efficiency and Renewable Energy Through Nanotechnology useful in a variety of ways, ranging from the creation of energy policy, to energy research development, and to education in nanotechnology and its application to energy-related problems. It can also be used as a primary or supplementary textbook for energy-related courses for advanced undergraduate and graduate students.