Mesoporous Silica Thin Membranes with Large Vertical Mesochannels for Nanosize-Based Separation

被引：96

作者：

Liu, Yupu ^{[1
,2
]}

Shen, Dengke ^{[1
,2
]}

Chen, Gang ^{[3
]}

Elzatahry, Ahmed A. ^{[4
]}

Pal, Manas ^{[1
,2
]}

Zhu, Hongwei ^{[1
,2
]}

Wu, Longlong ^{[3
]}

Lin, Jianjian ^{[1
,2
]}

Al-Dahyan, Daifallah ^{[5
]}

Li, Wei ^{[1
,2
]}

Zhao, Dongyuan ^{[1
,2
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Lab Adv Mat,iChEM, Shanghai 200433, Peoples R China

[2] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China

[3] Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[4] Qatar Univ, Mat Sci & Tech Program, Coll Arts & Sci, POB 2713, Doha, Qatar

[5] King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 35期

关键词：

membranes; mesoporous materials; nanofilters; separation; silica; vertical mesochannels; ONE-DIMENSIONAL MESOCHANNELS; PERPENDICULAR NANOCHANNELS; FILMS; NANOPARTICLES; CARBON; NANOCRYSTALS; GROWTH; ORGANOSILICA; PURIFICATION; ORIENTATION;

D O I：

10.1002/adma.201702274

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Membrane separation technologies are of great interest in industrial processes such as water purification, gas separation, and materials synthesis. However, commercial filtration membranes have broad pore size distributions, leading to poor size cutoff properties. In this work, mesoporous silica thin membranes with uniform and large vertical mesochannels are synthesized via a simple biphase stratification growth method, which possess an intact structure over centimeter size, ultrathin thickness (50 nm), high surface areas (up to 1420 m(2) g(-1)), and tunable pore sizes from approximate to 2.8 to 11.8 nm by adjusting the micelle parameters. The nanofilter devices based on the free-standing mesoporous silica thin membranes show excellent performances in separating differently sized gold nanoparticles (>91.8%) and proteins (>93.1%) due to the uniform pore channels. This work paves a promising way to develop new membranes with well-defined pore diameters for highly efficient nanosize-based separation at the macroscale.

引用

页数：8

共 47 条

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