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Chapter 2

Powders versus Thin Film Preparation

The chapter briefly outlines the sulphate, the chloride, the flame pyrolysis, the sol-gel, the hydrothermal, the solvothermal, the sol, the laser pyrolysis and the microwave methods for the preparation of the three most important powdered TiO2 phases (anatase, brookite and rutile). Some of these preparations can be used to prepare thin films of TiO2 on various types of supports. The techniques described for the films obtainment are: the dip-coating, the spin-coating, the flow coating, the (plasma) spray drying, the spray-pyrolysis methods, the physical vapour deposition, the chemical vapour deposition, the chemical bath deposition, the thermal or the anodic oxidation and the electrophoretic techniques. Some examples from the literature are commented by considering the photocatalytic activity both of powders and films.

Print publication date: 24 Aug 2010
Copyright year: 2011
Print ISBN: 978-1-84755-870-1
PDF eISBN: 978-1-84973-203-1