Bactericidal effect of titanium dioxide thin film photocatalysts.

Tang Hung Yuk.Thesis (M.Phil.)--Chinese University of Hong Kong, 2002.Includes bibliographical references (leaves 71-79).Abstracts in English and Chinese.ABSTRACT --- p.iDECLARATION --- p.iiiACKNOWLEDGEMENT --- p.ivTABLE OF CONTENTS --- p.vLIST OF TABLES --- p.viiiLIST OF FIGURES --- p.ixChapter CHAPTER ONE: --- INTRODUCTION --- p.1Chapter 1.1 --- Fundamentals of TiO2 --- p.1Chapter 1.2 --- Application of TiO2 --- p.5Chapter 1.3 --- Scope of Work --- p.11Chapter CHAPTER TWO: --- DISINFECTION BY UV IRRADIATED TiO2 --- p.14Chapter 2.1 --- Introduction --- p.14Chapter 2.2 --- Experimental --- p.19Chapter 2.2.1 --- Materials --- p.19Chapter 2.2.2 --- Preparation of TiO2 films --- p.19Chapter 2.2.3 --- Culture of microorganisms --- p.20Chapter 2.2.4 --- Bactericidal activities --- p.21Chapter 2.2.5 --- Photocatalytic experiment to degrade acetone in gas phase --- p.21Chapter 2.2.6 --- Photocatalytic experiment to degrade rhodamine B in aqueous phase --- p.22Chapter 2.2.7 --- Characterization --- p.23Chapter 2.3 --- Results and Discussions --- p.25Chapter 2.3.1 --- Bactericidal activity --- p.25Chapter 2.3.2 --- Photocatalytic activity --- p.34Chapter 2.3.3 --- Thickness and transmittance of Ti〇2 films --- p.37Chapter 2.3.4 --- Surface morphology and roughness of thin films --- p.40Chapter 2.3.5 --- Crystalline phase and crystallite size of thin films --- p.42Chapter 2.3.6 --- XPS study --- p.43Chapter CHAPTER THREE: --- DISINFECTION BY VISIBLE IRRADIATED TiO2 --- p.47Chapter 3.1 --- Introduction --- p.47Chapter 3.2 --- Experimental --- p.58Chapter 3.2.1 --- Materials --- p.58Chapter 3.2.2 --- Preparation of TiO2 films --- p.58Chapter 3.2.3 --- Culture of microorganisms --- p.59Chapter 3.2.4 --- Bactericidal activity --- p.60Chapter 3.3 --- Results and discussions --- p.61Chapter 3.3.1 --- Dye adsorbed TiO2 film stability --- p.61Chapter 3.3.2 --- Bactericidal activity of the dye-sensitized TiO2 films --- p.62Chapter 3.3.3 --- Bactericidal mechanism of the films under irradiation --- p.64Chapter CHAPTER FOUR: --- CONSLUSIONS --- p.68REFERENCES --- p.7