) illumination because of its semiconducting character. [1-3]Figure. 1-1 TiO2 crystal structures rutile and ... .0 eV)Especially, anatase type of TiO2 has widely received attention as a promising photocatalyst [4 ... Chapter 1Introduction1.1 TiO2In 1791, Britain's William Grigor (William Gregor) the black sands