Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment [Hardcover]

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.

Preface xi

Part 1: Synthesis of Effective Photocatalysts 1

1 Biogenic Synthesis of Metal Oxide Nanoparticle Semiconductors for Wastewater Treatment 3
Nkgaestsi M. Ngoepe, Mpitloane J. Hato, Kwena D. Modibane and Nomso C. Hintsho-Mbita

1.1 Introduction 4

1.2 Classifications of Semiconductor Nanostructured Materials 6

1.2.1 Zinc Oxide (ZnO) Nanostructures 6

1.2.2 Titanium Dioxide Nanostructures 7

1.3 Biological Synthesis of ZnO and TiO2 Nanostructures 9

1.3.1 Synthesis of ZnO and TiO2 Using Bacteria 10

1.3.2 Preparation of ZnO and TiO2 from Plants 13

1.4 Photocatalytic Degradation of Dyes 17

1.5 Challenges of Photocatalysis 22

1.6 Conclusions: Future and Scope 23

Acknowledgments 24

References 24

2 Wastewater Treatment: Synthesis of Effective Photocatalysts Through Novel Approaclã'