TY - JOUR
T1 - Synthesis of highly stable UiO-66-NH2 membranes with high ions rejection for seawater desalination
AU - Wan, Linlin
AU - Zhou, Chen
AU - Xu, Kai
AU - Feng, Bo
AU - Huang, Aisheng
N1 - Publisher Copyright:
© 2017 Elsevier Inc.
PY - 2017
Y1 - 2017
N2 - Compact and phase-pure UiO-66-NH2 membranes were synthesized on the 3-aminopropy-ltriethoxysilane (APTES) modified macroporous Al2O3 tubes through a repeated synthesis strategy. APTES acts as a molecular linker for anchoring the metal ions onto the support surface to promote the nucleation and the crystallization of UiO-66-NH2 membrane. Therefore, well-intergrown UiO-66-NH2 membranes could be prepared through a repeated synthesis method on the APTES-modified macroporous Al2O3 tubes. The developed UiO-66-NH2 membranes were evaluated for seawater desalination by pervaporation. It is found that the UiO-66-NH2 membranes show high desalination performances attributing to the narrow pore size which is exactly in between the size of water molecules and hydrated ions. With increasing the feed temperature from 318 to 363 K, the water fluxes increase from 1.5 to 12.1 kg m−2 h−1, with ions rejections of above 99.7%. Further, the UiO-66-NH2 membranes display high stability for a long time in seawater desalination, which is very promising for seawater desalination.
AB - Compact and phase-pure UiO-66-NH2 membranes were synthesized on the 3-aminopropy-ltriethoxysilane (APTES) modified macroporous Al2O3 tubes through a repeated synthesis strategy. APTES acts as a molecular linker for anchoring the metal ions onto the support surface to promote the nucleation and the crystallization of UiO-66-NH2 membrane. Therefore, well-intergrown UiO-66-NH2 membranes could be prepared through a repeated synthesis method on the APTES-modified macroporous Al2O3 tubes. The developed UiO-66-NH2 membranes were evaluated for seawater desalination by pervaporation. It is found that the UiO-66-NH2 membranes show high desalination performances attributing to the narrow pore size which is exactly in between the size of water molecules and hydrated ions. With increasing the feed temperature from 318 to 363 K, the water fluxes increase from 1.5 to 12.1 kg m−2 h−1, with ions rejections of above 99.7%. Further, the UiO-66-NH2 membranes display high stability for a long time in seawater desalination, which is very promising for seawater desalination.
KW - Covalent modification
KW - Metal-organic frameworks membranes
KW - Pervaporation
KW - Seawater desalination
KW - UiO-66-NH membranes
UR - https://www.scopus.com/pages/publications/85021228088
U2 - 10.1016/j.micromeso.2017.06.025
DO - 10.1016/j.micromeso.2017.06.025
M3 - 文章
AN - SCOPUS:85021228088
SN - 1387-1811
VL - 252
SP - 207
EP - 213
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -