(Invited) Nanoporous Membranes by Self-Assembly of “Hairy” Nanoparticles
(Invited) Nanoporous Membranes by Self-Assembly of “Hairy” Nanoparticles
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（特邀）“毛状”纳米粒子自组装纳米多孔膜
DOI：
10.1149/08513.1309ecst
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Zharov, Ilya
中科院分区：
文献类型：
--
作者：
Eygeris, Yulia;White, Emily;Khabibullin, Amir;Zharov, Ilya
我们开发了一种新的方法来制备纳米多孔膜的聚合物刷修饰的胶体纳米粒子的组装。由不带电的HNP携带PHEMA刷制成的膜在水中稳定，在有机溶剂中可拆卸，并且可以承受多次组装-拆卸循环。它们的过滤截止可以通过改变二氧化硅球直径来控制，并且取决于聚合物刷结构。这些膜也可以回收和洗涤污染物。含PSPM-r-PEEMA刷的荷电HNP膜可以通过裸二氧化硅和毛状颗粒的分层沉积来制备。通过这些膜的通量响应于电解质浓度的变化。这些膜的盐截留率在中等到高的范围内（65-80%），并且取决于聚合物刷的组成和盐浓度。
We developed a novel approach to the preparation of nanoporous membranes by the assembly of polymer brush-modified colloidal nanoparticles. Membranes made of uncharged HNPs carrying PHEMA brushes were stable in water, disassembled in organic solvents and could withstand multiple cycles of assemblydisassembly. Their filtration cut-off could be controlled by varying the silica sphere diameter and depends on the polymer brush structure. These membranes can also be recycled and washed from contaminants. Charged HNP membranes containing PSPM-r-PEEMA brushes can be prepared through layered deposition of bare silica and hairy particles. The flux through these membranes responds to the changes in electrolyte concentration. The salt rejection by these membranes is in the moderate to high range (65-80%) and depends on the composition of the polymer brushes and salt concentration.