TY - JOUR
T1 - Mesoporous silica thin films incorporated chitosan mixed matrix nanofiltration membranes for textile wastewater treatment
AU - Lai, Yung Sheng
AU - Yang, Jingling
AU - Mou, Chung Yuan
N1 - Funding Information:
This study was supported by the Guangzhou Basic and Applied Basic Research Foundation, and the Fundamental Research Funds for the Central Universities (No. 11620322) and MOST of Taiwan. We thank Prof. Kuo‐Lun Tung of National Taiwan University for helps in experiments.
Funding Information:
This study was supported by the Guangzhou Basic and Applied Basic Research Foundation, and the Fundamental Research Funds for the Central Universities (No. 11620322) and MOST of Taiwan. We thank Prof. Kuo-Lun Tung of National Taiwan University for helps in experiments.
Funding Information:
MOST of Taiwan; Fundamental Research Funds for the Central Universities, Grant/Award Number: 11620322; Guangzhou Basic and Applied Basic Research Foundation Funding information
Publisher Copyright:
© 2020 The Chemical Society Located in Taipei & Wiley-VCH GmbH
PY - 2021/3
Y1 - 2021/3
N2 - The demand of nanofiltration (NF) membranes for practical and cost-effective environmental treatment is exploding. Mixed matrix membranes (MMMs) have attracted tremendous interest on account of combining the benefits of polymer and inorganic fillers. In this study, mesoporous silica thin films with perpendicular nanochannels (SBA-15(⊥)) incorporated in chitosan (CS) were fabricated for dye wastewater purification. Functional groups, such as amino or epoxy groups were introduced into SBA-15(⊥) (SBA-15(⊥)-NH2, SBA-15(⊥)-Epo) for forming covalent bonds with chitosan matrix to improve their compatibility. The excellent performance in dye/salt fractionation in aqueous solution was demonstrated by SBA-15(⊥)-Epo/CS MMMs, which realized a cut off of 585 g/mol, 99.9% rejection of Congo red, while maintaining 85% permeation of NaCl. In addition, the separation mechanism of the resulting membrane was explored. The efficient NF performance of SBA-15(⊥)-Epo/CS membrane was attributed to its better compatibility between SBA-15(⊥)-Epo and chitosan matrix by virtue of the formation of covalent bonds thus to ensure the high dye rejection, and the vertically oriented nanochannels arrangement facilitated the molecule transportation. This work will inspire feasible synthesis of a new generation of MMMs membranes for dye wastewater purification.
AB - The demand of nanofiltration (NF) membranes for practical and cost-effective environmental treatment is exploding. Mixed matrix membranes (MMMs) have attracted tremendous interest on account of combining the benefits of polymer and inorganic fillers. In this study, mesoporous silica thin films with perpendicular nanochannels (SBA-15(⊥)) incorporated in chitosan (CS) were fabricated for dye wastewater purification. Functional groups, such as amino or epoxy groups were introduced into SBA-15(⊥) (SBA-15(⊥)-NH2, SBA-15(⊥)-Epo) for forming covalent bonds with chitosan matrix to improve their compatibility. The excellent performance in dye/salt fractionation in aqueous solution was demonstrated by SBA-15(⊥)-Epo/CS MMMs, which realized a cut off of 585 g/mol, 99.9% rejection of Congo red, while maintaining 85% permeation of NaCl. In addition, the separation mechanism of the resulting membrane was explored. The efficient NF performance of SBA-15(⊥)-Epo/CS membrane was attributed to its better compatibility between SBA-15(⊥)-Epo and chitosan matrix by virtue of the formation of covalent bonds thus to ensure the high dye rejection, and the vertically oriented nanochannels arrangement facilitated the molecule transportation. This work will inspire feasible synthesis of a new generation of MMMs membranes for dye wastewater purification.
KW - mesoporous materials
KW - mixed matrix membranes
KW - nanofiltration
KW - post modification
KW - vertical pore orientation
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U2 - 10.1002/jccs.202000495
DO - 10.1002/jccs.202000495
M3 - Article
AN - SCOPUS:85098112091
SN - 0009-4536
VL - 68
SP - 451
EP - 461
JO - Journal of the Chinese Chemical Society
JF - Journal of the Chinese Chemical Society
IS - 3
ER -