The phase composition of unsupported titania membranes from peptization and hydrothermal process was investigated as a function of calcination temperature. It was observed that after calcination at 450°C for 2 hr, the membranes from peptization have a narrow PSD with 3-5 nm pore diameters. For the membranes from hydrothermal process, the pore size distribution (PSD) was found to shift to larger pore sizes with increasing calcination temperature from 450 to 600 °C. It was shown that the hydrothermal process was an effective means to prepare thermally stable titania membranes.
Bibliographical noteFunding Information:
This work was supported by Korea Research Foundation (KRF-2003-041-D00168).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering