Synthesis and Characterization of Nanoribbons Synthesized by Hydrothermal Process

In the present work, titanate nanoribbons were synthesized by hydrothermal route using P25 (Degussa) TiO2 powder as precursor and strong NaOH as catalyzer. The prepared titanates were calcined followed by protonation. Powders were characterized using Field Emission Scanning Electron Microscope (FESEM), High Resolution Electron Microscope (HRTEM), X-Ray diffraction Analysis (XRD), Differential Thermal Analysis and UV-Vis Photospectroscopy. Methylene blue degradation test was applied to evaluate the photoactivity of the products obtained after three different synthesis stages. It has been realized that nanoribbons form by exfoliation mechanism from dissolved aggregates during hydrothermal course. Results revealed that adsorption capability of protonated titanates was the greatest whereas photoactivity of calcined powder was the best among the products of each step