Precise nanopore tuning for a high-throughput desalination membrane via co-deposition of dopamine and multifunctional POSS
Precise nanopore tuning for a high-throughput desalination membrane via co-deposition of dopamine and multifunctional POSS
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通过多巴胺和多功能 POSS 共沉积实现高通量脱盐膜的精确纳米孔调节
DOI：
10.1039/c8ta03673j
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发表时间：
2018-07
影响因子：
11.9
通讯作者：
Cao Xingzhong
中科院分区：
文献类型：
--
作者：
You Xinda;Wu Hong;Su Yanlei;Yuan Jinqiu;Zhang Runnan;Yu Qianqian;Wu Mengyuan;Jiang Zhongyi;Cao Xingzhong
通过膜分离有机分子和盐离子的需求在各个行业都在增加，但亚纳米级溶质尺寸的差异使其成为一个关键挑战。本文采用氨基功能化多面体低聚硅氧烷（POSS）纳米颗粒作为分子水平调节剂，通过简单的共沉积工艺来控制聚多巴胺（PDA）膜的纳米孔。通过物理插层和化学键合，在1.04 ~ 1.07 nm的狭窄平均纳米孔尺寸范围内实现了纳米孔隙度的增加。优化后的POSS-PDA/PAN膜具有良好的染料去除率（>90%）和盐渗透率（>90%），其高渗透率为1099 L m−2 h−1 MPa−1，是先前报道的具有类似染料去除率的膜的2 - 4倍。此外，刚性笼状POSS纳米颗粒与PDA膜交联有助于增强耐碱和抗压性。贻贝启发化学和多功能纳米材料的协同作用为设计具有良好的物理化学纳米结构的纳米孔膜提供了一种新的策略，以实现分子和离子的高效和选择性运输。
The demand for fractionating organic molecules and salt ions via a membrane is increasing in various industries, but the sub-nanoscale difference in solute size makes it a critical challenge. Herein, amino-functionalized polyhedral oligomeric silsesquioxane (POSS) nanoparticles were employed as a molecular-level regulator to manipulate the nanopores of a polydopamine (PDA) membrane via a facile co-deposition process. By physical intercalation and chemical bonding of multifunctional POSS, increased nanoporosity was achieved within a narrow mean nanopore size range of 1.04–1.07 nm. The optimized POSS-PDA/PAN membrane exhibited desirable dye rejection (>90%) and salt permeation (>90%) with a high permeance of 1099 L m−2 h−1 MPa−1, which was 2–4 times higher than that of previously reported membranes with a similar dye rejection. Additionally, the rigid cage-like POSS nanoparticles cross-linked with the PDA membrane contributed to the reinforced alkali and compaction resistance. The synergy of mussel-inspired chemistry and multifunctional nanomaterials provided a novel strategy to engineer nanoporous membranes with a favorable physiochemical nanostructure for efficient and selective transport of both molecules and ions.
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影响因子：
2.4
作者：
P. Ekins
通讯作者：
P. Ekins
影响因子：
1.9
作者：
F. Blattner
通讯作者：
F. Blattner
影响因子：
1.6
作者：
Vicki D Crinis
通讯作者：
Vicki D Crinis
影响因子：
0.2
作者：
R. Eglash
通讯作者：
R. Eglash
DOI：
10.1080/13573320701467344
发表时间：
2004-01
期刊：
Wiley-Blackwell: Development Policy Review
影响因子：
--
作者：
J. Roberts;D. Shaw;P. Sahoo;N. Harris;B. Persaud;M. Thakur;I. Gillson;A. Suleiman
通讯作者：
J. Roberts;D. Shaw;P. Sahoo;N. Harris;B. Persaud;M. Thakur;I. Gillson;A. Suleiman