Rapid synthesis of TiO2 nanotubes via microwave-assisted hydrothermal method

다국어 초록 (Multilingual Abstract)

Microwave irradiation was used as a tool for shortening the reaction time in the hydrothermal process for the fabrication ofTiO2 nanotubes. The variation of microwave hydrothermal treatment time from 1 h to 4 h was implemented to investigate theeffects of microwave reaction time on the nanotubes formation. Many different spectroscopic and physicochemical analysis,such as X-ray diffraction (XRD), Raman spectroscopy (RS), Transmission electron microscopy (TEM), Brunauer-EmmettTeller(BET) and UV-Vis DRS spectroscopy, were performed to characterize the microwave hydrothermally synthesized TiO2nanotubes (TNTs). The results demonstrated that the TNTs preparation time can be significantly reduced to 4 h by the use ofmicrowave hydrothermal process under the optimized microwave conditions of 150 oC, 195 W and the rotation speed of300 rpm. The obtained nanostructured TiO2 products with chemical formula Na2-xHxTi2O5.H2O indicated larger BET surfacearea over 200 m2 •g−1 as compared to 56 m2 • g−1 of the TiO2-P25 precursor. The study revealed the high degree of dye adsorptionby TiO2 nanotubes during the photocatalytic dye degradation experiments.

참고문헌 (Reference)

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