Environmentally Benign Photocatalysts

This book focuses on the various approaches used in the design and development of highly efficient, visible light responsive titanium oxide-based photocatalysts by applying such methods as sol-gel, precipitation, dip-coating, metal ion-implantation, and magnetron sputtering deposition. Titanium oxide-based photocatalysts and related catalysts are especially promising to investigate since they are stable, non-toxic, readily available, and highly efficient photofunctional materials. This book discusses the fundamental characterization studies carried out on the active sites and mechanisms behind photochemical reactions at the molecular level, as well as their potential applications. The book serves not only as a text for research into photochemistry and photocatalysis, but also explores the field of green technologies by experts in academia and industry. This book will appeal to those interested in research on the environmental impact of materials, catalysis, and photocatalysis.

Klappentext

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.

Inhalt

Synthesis and Characterization Studies of Highly Active Titanium Oxide-based Photocatalysts.- Chemical Methods for the Preparation of Multifunctional Photocatalysts.- Second Generation Visible-Light-Active Photocatalysts: Preparation, Optical Properties, and Consequences of Dopants on the Band Gap Energy of TiO2.- Preparation of Titanium Oxide-Based Powders and Thin Films of High Photocatalytic Activities Using Solvothermal Methods.- Preparation of Highly Transparent TiO2-based Thin Film Photocatalysts by an Ion Engineering Method: Ionized Cluster Beam Deposition.- UV Raman Spectroscopic Studies on Titania: Phase Transformation and Significance of Surface Phase in Photocatalysis.- Photoluminescence Spectroscopic Studies on TiO2 Photocatalyst.- Surface Chemistry of TiO2 Photocatalysis and LIF Detection of OH Radicals.- Local Structures, Excited States, and Photocatalytic Reactivities of "Single-Site" Ti-Oxide Photocatalysts Constructed Within Zeolites or Mesoporous Materials.- Development of Visible Light-responsive Titanium Oxide Photocatalysts.- Visible-Light-Responsive Titanium Dioxide Photocatalysts.- Development and Sensitization of N- or S-Doped TiO2 Photocatalysts.- Visible Light-Responsive Titanium Oxide Photocatalysts: Preparations Based on Chemical Methods.- Development of Well-Defined Visible Light-Responsive TiO2 Thin Film Photocatalysts by Applying a RF-Magnetron Sputtering Deposition Method.- Photocatalytic Reactions for Environmentally-Harmonious Applications.- Photo-assisted Mineralization of the Agrochemical Pesticides Oxamyl and Methomyl and the Herbicides Diphenamid and Asulam.- Purification of Toxic Compounds in Water and Treatment of Polymeric Materials.- Development of Highly Active Titanium Oxide Photocatalysts Anchored on Silica Sheets and their Applications for Air Purification Systems.- Photocatalytic Application of TiO2 for Air Cleaning.- Photocatalytic Removal of Gas-Phase Elemental Mercury Using TiO2.- Photocatalytic Purification of Benzene in Air.- The Effect of Addition of Pt on the Gas Phase Photocatalysis over TiO2.- Photoreactions of Organic Compounds with TiO2 Single Crystal Surfaces.- Photo-induced Superhydrophilicity for Materials with Self-cleaning Properties.- Investigations of the Photoinduced Superhydrophilicity of the TiO2 Photocatalyst Surface by Near-Infrared Spectroscopy.- Photocatalytic Water-splitting for the Evolution of H2 from H2O.- Photocatalytic Hydrogen Production from Water on Visible Light-Responsive TiO2 Thin Films Under Solar Light Irradiation.- Construction of Solid-State Thin Film Solar Cell by Applying Visible Light-Responsive TiO2 Thin Film Materials.- Photocatalytic Organic Syntheses.- Photocatalytic Transformations of Sulfur-Based Organic Compounds.- TiO2-Based Photocatalysis for Organic Synthesis.- Photocatalytic Organic Syntheses.- Renewable Energy from the Photocatalytic Reduction.- Renewable Energy from the Photocatalytic Reduction of CO2 with H2O.- Photofunctionalization.- Photofunctionalization of TiO2 for Optimal Bone-titanium Integration: A Novel Phenomenon of Super Osseointegration.- Conclusions and Emerging Applications.- Energing Applications of TiO2-Based Composites.