LU Yawei, CHEN Xianfu, WEN Juanjuan, et al. Fabrication of high performance ZrO2-TiO2 NF membranes via a modified colloidal sol-gel process[J]. CIESC Journal, 2015, (9): 3769-3775. DOI: 10.11949/j.issn.0438-1157.20150936.
LU Yawei, CHEN Xianfu, WEN Juanjuan, et al. Fabrication of high performance ZrO2-TiO2 NF membranes via a modified colloidal sol-gel process[J]. CIESC Journal, 2015, (9): 3769-3775. DOI: 10.11949/j.issn.0438-1157.20150936.DOI:
The optimized ZrO2-TiO2 composite colloidal sols with an average particle size of 3 nm were successfully synthesized via a modified colloidal sol-gel process by using water as solvent. Tubular α-Al2O3 membranes with a mean pore size of 5 nm were used as the intermediate layers. Defect-free ZrO2-TiO2 NF membranes were then fabricated on the interlayer surface via a dip-coating method. The ZrO2-TiO2 NF membranes with an average toplayer thickness of 200 nm showed the relatively high pure water permeability of about 23 L·m-2·h-1·(0.1 MPa)-1 and low MWCO of about 600. Meanwhile
the ZrO2-TiO2 NF membranes indicated the high retention rates for Co2+
Sr2+ and Cs+ of 99.6%
99.2% and 75.5% at the condition of low salts concentration