A Study on the Crystalline Structure of Sodium Titanate Nanobelts Prepared by the Hydrothermal Method

作者：Zhang Dong Ri; Kim Chang Woo; Kang Young Soo^*

来源：Journal of Physical Chemistry C, 2010, 114(18): 8294-8301.

DOI：10.1021/jp101482k

The formation and crystal structure of sodium titanate nanobelts synthesized with various Ti precursors are reported. P25 (TiO(2)) powder, Ti(OBu)(4), and TiCl(4) were used as Ti precursors. Their nanobelts were synthesized via hydrothermal process at 180 degrees C for 24 h in concentrated aqueous NaOH solution. The product obtained with P25 (TiO(2)) was identified to be Na(2)Ti(4)O(9)center dot 1.5H(2)O. The products obtained with Ti(O(CH(2))(3)CH(3))(4) and TiCl(4) were confirmed to be the crystal structure of Na(2)Ti(2)O(4)(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.

• 出版日期2010-5-13
• 单位延边大学