**Meet the editors**

Dr. Sher Bahadar Khan received his Ph.D in chemistry from HEJ, Karachi University, Pakistan. After completion of his Ph.D, he started his post-doctoral career in nano-chemistry and nanotechnology and continued to work as a post-doctoral research fellow until February 2010 at Yonsei University, South Korea. In March 2010, he joined the Center for Advanced Materials and

Nano-engineering, Department of Chemistry, Najran University as an Assistant Professor and continued his work until August 2011. He joined the Chemistry Department, King Abdulaziz University, Jeddah, Saudi Arabia as an Assistant Professor in September 2011. Currently he is a full Professor and performs research in nanochemistry and nanotechnology, which comprises drug delivery, solar cell, development of active photo-catalysts, and fabrication of perceptive bio-sensors and chemi-sensors using metal oxide nanomaterials and their green environmental nanohybrids. He is the author of six books, six patents, and 270 research papers with more than 800 impact factor, 4000 citations, and 3a 5 h-index.

Dr. Kalsoom Akhtar received her Ph.D from the Chemistry Department, Ewha Womans University, Seoul, Korea. Dr. K. Akhtar is an Assistant Professor at the Chemistry Department, King Abdulaziz University and performs research in organic and nano-chemistry, which comprises photo-catalysts, organic synthesis, and metal oxide nanomaterials. She is the author of two books and 65 research papers.

Contents

**Preface VII**

Chapter 1 **Disinfection Methods 3**

Cíntia Soares

Khan

**Section 1 Photocatalysts for Water Treatment 1**

Chapter 2 **Selective Photodegradation Using Titanate**

John Moma and Jeffrey Baloyi

**Nanostructures 21**

Muhammad Saqib Ishaq, Zobia Afsheen, Amjad Khan and Amjad

Ayman Hassan Zaki and Waleed Mohamed Ali. El Rouby

Chapter 3 **Modified Titanium Dioxide for Photocatalytic Applications 37**

Vladimir A. Escobar Barrios, Dalia Verónica Sánchez Rodríguez, Nancy Ayerim Cervantes Rincón and Alma Berenice Jasso-Salcedo

Gustavo Lopes Colpani, Micheli Zanetti, Rubieli Carla Frezza Zeferino, Luciano Luiz Silva, Josiane Maria Muneron de Mello, Humberto Gracher Riella, Natan Padoin, Márcio Antônio Fiori and

Chapter 6 **Carbon-/Zeolite-Supported TiO2 for Sorption/Photocatalysis**

**Hydroxyapatite Photocatalytic Materials 115**

Linh Nguyen Thi Truc, Seungbum Hong and Kwangsoo No

Chapter 4 **Modified Metallic Oxides for Efficient Photocatalysis 57**

Chapter 5 **Lanthanides Effects on TiO2 Photocatalysts 81**

**Applications in Water Treatment 99**

Chapter 7 **Evaluation of the Role of Hydroxyapatite in TiO2/**

Florica Manea and Corina Orha
