The heterogeneous photocatalysis using semiconductor nanocrystals is an important process in the field of water treatment since it is a low cost, environmentally friendly, and zero waste technique. In this work, titanate nanostructures (sheets, tubes, and wires) were prepared by simple hydrothermal method. All samples were characterized by X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller surface area analysis, and Zetasizer. The results revealed that tuning the morphology of TiO 2 changed the activity of the prepared nanostructures, where titanate nanowires exhibited the highest photocatalytic activity toward crystal violet dye, reaching 100% at pH 3 under ultraviolet illumination for 35 min.

In adsorption studies, it is of significant matter to define the maximum absorbance of dye to ensure accuracy and reliability of the results. The primary aim of this work was...