Abstract
The formation and crystal structure of sodium titanate nanobelts synthesized with various Ti precursors are reported. P25 (TiO2) powder, Ti(OBu)4, and TiCl4 were used as Ti precursors. Their nanobelts were synthesized via hydrothermal process at 180 °C for 24 h in concentrated aqueous NaOH solution. The product obtained with P25 (TiO2) was identified to be Na2Ti4O9·1.5H2O. The products obtained with Ti(O(CH2)3CH3)4 and TiCl4 were confirmed to be the crystal structure of Na2Ti2O4(OH)2. This means that the formation mechanism of the crystal structure in the synthetic process depends on their Ti source. Their morphology was compared with XRD, TEM, FE-SEM, Raman, and TGA. On the basis of their morphology results, the crystalline structure model and the formation mechanism of sodium titanate nanobelts are proposed.
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