Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation

Jingling Yang; Geng Sheng Lin; Chung Yuan Mou; Kuo Lun Tung

doi:10.1021/acsami.9b21042

Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation

Jingling Yang, Geng Sheng Lin, Chung Yuan Mou, Kuo Lun Tung

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We report on our use of a thin-layered vertical mesoporous silica thin film (MSTF) with tunable pore size overlaid on an anodic aluminum oxide (AAO) membrane for advancing water purification. The features of ultrathin thickness (about 20 nm), a uniform vertical pore orientation, low tortuosity, high porosity, and a hydrophilic surface endow the MSTF membranes with ultrahigh water permeability compared with that of state-of-The-Art membranes. The modified E-MSTF membrane with a small pore diameter of 2.1 ± 0.1 nm demonstrates superior nanofiltration performance for dye molecules with a cutoff of 520 Da and ultrahigh water permeability of 310 ± 8 L m^-2 h^-1 bar^-1. Furthermore, the precise molecular sieving of dye/salt mixtures was realized with outstanding salt permeation (97.5% NaCl, 96.0% Na₂SO₄) and a high retention of dye (99.0%). The water permeance and selectivity of the modified E-MSTF membrane are higher than that of reported membranes with similar dye rejections. This work opens up new avenues for constructing tailor-made membranes with tunable pore size and remarkable separation performance.

Original language	English
Pages (from-to)	7459-7465
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	12
Issue number	6
DOIs	https://doi.org/10.1021/acsami.9b21042
Publication status	Published - Feb 12 2020
Externally published	Yes

Keywords

mesoporous materials
nanofiltration
thin films
tunable pore size
vertical pore orientation

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1021/acsami.9b21042

Cite this

@article{0846de2d6a76411993a6f879a1e652d0,

title = "Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation",

abstract = "We report on our use of a thin-layered vertical mesoporous silica thin film (MSTF) with tunable pore size overlaid on an anodic aluminum oxide (AAO) membrane for advancing water purification. The features of ultrathin thickness (about 20 nm), a uniform vertical pore orientation, low tortuosity, high porosity, and a hydrophilic surface endow the MSTF membranes with ultrahigh water permeability compared with that of state-of-The-Art membranes. The modified E-MSTF membrane with a small pore diameter of 2.1 ± 0.1 nm demonstrates superior nanofiltration performance for dye molecules with a cutoff of 520 Da and ultrahigh water permeability of 310 ± 8 L m-2 h-1 bar-1. Furthermore, the precise molecular sieving of dye/salt mixtures was realized with outstanding salt permeation (97.5% NaCl, 96.0% Na2SO4) and a high retention of dye (99.0%). The water permeance and selectivity of the modified E-MSTF membrane are higher than that of reported membranes with similar dye rejections. This work opens up new avenues for constructing tailor-made membranes with tunable pore size and remarkable separation performance.",

keywords = "mesoporous materials, nanofiltration, thin films, tunable pore size, vertical pore orientation",

author = "Jingling Yang and Lin, {Geng Sheng} and Mou, {Chung Yuan} and Tung, {Kuo Lun}",

note = "Funding Information: This work was supported by National Taiwan University and MOST (Ministry of Science and Technology), Taiwan. We thank Ya-Yun Yang and Ching-Yen Lin at the Instrument Centre of National Taiwan University for their assistance with SEM, Chia-Ying Chien and Su-Jen Ji of the Ministry of Science and Technology (National Taiwan University) for their assistance with the FIB instrument and high-magnification TEM experiments. Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",

year = "2020",

month = feb,

day = "12",

doi = "10.1021/acsami.9b21042",

language = "English",

volume = "12",

pages = "7459--7465",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "6",

}

TY - JOUR

T1 - Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation

AU - Yang, Jingling

AU - Lin, Geng Sheng

AU - Mou, Chung Yuan

AU - Tung, Kuo Lun

N1 - Funding Information: This work was supported by National Taiwan University and MOST (Ministry of Science and Technology), Taiwan. We thank Ya-Yun Yang and Ching-Yen Lin at the Instrument Centre of National Taiwan University for their assistance with SEM, Chia-Ying Chien and Su-Jen Ji of the Ministry of Science and Technology (National Taiwan University) for their assistance with the FIB instrument and high-magnification TEM experiments. Publisher Copyright: Copyright © 2020 American Chemical Society.

PY - 2020/2/12

Y1 - 2020/2/12

N2 - We report on our use of a thin-layered vertical mesoporous silica thin film (MSTF) with tunable pore size overlaid on an anodic aluminum oxide (AAO) membrane for advancing water purification. The features of ultrathin thickness (about 20 nm), a uniform vertical pore orientation, low tortuosity, high porosity, and a hydrophilic surface endow the MSTF membranes with ultrahigh water permeability compared with that of state-of-The-Art membranes. The modified E-MSTF membrane with a small pore diameter of 2.1 ± 0.1 nm demonstrates superior nanofiltration performance for dye molecules with a cutoff of 520 Da and ultrahigh water permeability of 310 ± 8 L m-2 h-1 bar-1. Furthermore, the precise molecular sieving of dye/salt mixtures was realized with outstanding salt permeation (97.5% NaCl, 96.0% Na2SO4) and a high retention of dye (99.0%). The water permeance and selectivity of the modified E-MSTF membrane are higher than that of reported membranes with similar dye rejections. This work opens up new avenues for constructing tailor-made membranes with tunable pore size and remarkable separation performance.

AB - We report on our use of a thin-layered vertical mesoporous silica thin film (MSTF) with tunable pore size overlaid on an anodic aluminum oxide (AAO) membrane for advancing water purification. The features of ultrathin thickness (about 20 nm), a uniform vertical pore orientation, low tortuosity, high porosity, and a hydrophilic surface endow the MSTF membranes with ultrahigh water permeability compared with that of state-of-The-Art membranes. The modified E-MSTF membrane with a small pore diameter of 2.1 ± 0.1 nm demonstrates superior nanofiltration performance for dye molecules with a cutoff of 520 Da and ultrahigh water permeability of 310 ± 8 L m-2 h-1 bar-1. Furthermore, the precise molecular sieving of dye/salt mixtures was realized with outstanding salt permeation (97.5% NaCl, 96.0% Na2SO4) and a high retention of dye (99.0%). The water permeance and selectivity of the modified E-MSTF membrane are higher than that of reported membranes with similar dye rejections. This work opens up new avenues for constructing tailor-made membranes with tunable pore size and remarkable separation performance.

KW - mesoporous materials

KW - nanofiltration

KW - thin films

KW - tunable pore size

KW - vertical pore orientation

UR - http://www.scopus.com/inward/record.url?scp=85079340347&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85079340347&partnerID=8YFLogxK

U2 - 10.1021/acsami.9b21042

DO - 10.1021/acsami.9b21042

M3 - Article

C2 - 31961650

AN - SCOPUS:85079340347

SN - 1944-8244

VL - 12

SP - 7459

EP - 7465

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 6

ER -

Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this