الفهرس 
INTRODUCTION and LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
Pure TiO2 nanocrystals were prepared using post hydrothermal treatment
at 180 oC at different hydrothermal time (0, 6, 12, 24 h) in aqueous nitric
acid. Also the 0.01 mol Fe3+ and 0.01 mol Zn2+ doped TiO2 were
prepared under the same condition but at 12 h of hydrothermal time. Xray
diffraction (XRD), transmission electron microscope (TEM), surface
area analysis and UV–visible diffuse reflectance were used to
characterize the hydrothermally treated pure and doped TiO2. The TEM
results showed that shape of TiO2 nanoparticles could be manipulated by
hydrothermal treatment. The increasing of hydrothermal time
significantly altered the morphology of TiO2 from aggregated
nanospherical shape (T6 h) into nano-leaf and rod like morphologies
(T12 h). The combination of doping and hydrothermal treatment for the
TiO2 sol leads to hinder the crystal growth and formation of highly
aggregated spherical nanoparticle. XRD analysis confirms that all TiO2
samples have anatase phase except T0hsol and ZT12h. Surface and
optical properties are remarkably affected by hydrothermal and doping
modification. The prepared TiO2 nanomaterials were applied for
photocatalytic degradation of textile dye (brilliant black (BB)) and
photocatalytic hydrogen production from water splitting.