Abstract

The roles of growth conditions, such as pH values, reaction temperatures and reaction times, on the morphologies and topotactic transformation processes from TiOF2 to anatase TiO2 has been investigated in this work. The topotactic transformation from TiOF2 to TiO2 can only take place with pH values ranging from 2 to 11. The morphologies of as-prepared samples were greatly dependent on the pH values of precursor solutions. The reaction temperatures can affect the crystalline quality and surface areas of TiO2 nanoboxes. The photocatalytic performances were also discussed.

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