Covalently modified MoS2 for the fabrication of interlayered thin film composite membranes with excellent structural stability against swelling and drying in organic solvent nanofiltration

Wang，Li1,2; Zhang，Meng1; Shu，Yufei1; Han，Qi1; Long，Li2; Chen，Beizhao1; Wang，Mengxia1; Li，Li1; Cao，Siyu1; Yang，Zhe2; Liu，Bei1; Wang，Zhongying1,3; Tang，Chuyang Y.2

2024-07-01

10.1016/j.memsci.2024.122985

Journal of Membrane Science   影响因子和分区

0376-7388

1873-3123

Thin film nanocomposite (TFNi) membranes interlayered with 2D nanomaterials are promising for organic solvent nanofiltration (OSN) applications. However, swelling and drying problems can arise due to the instability of the 2D nanomaterial interlayer in different solvents and humidity conditions. To address this issue, covalently modified molybdenum disulfide (MoS) nanosheets (MoS–COOH and MoS–CONH) were used as interlayers in the fabrication of TFNi membranes. The covalent groups acted as spacers to stabilize the interlayer spacing of the MoS interlayer and regulate its structural stability in diverse solvents and drying conditions. The TFNi membranes interlayered with MoS–COOH and MoS–CONH nanosheets demonstrated excellent structural stability and maintained their high permeance even after exposure to various solvents and drying conditions. The TFNi-MoS-CONH membrane exhibited the highest permeance of 8.60 ± 0.23 L m h bar for MeOH, with a high rejection of 87.1 ± 1.3 % for Evans Blue (EB). Furthermore, the TFNi membranes exhibited sustained separation performance throughout the 72 h test, demonstrating their structural stability. This study highlights the potential of TFNi membranes interlayered with covalently modified MoS nanosheets for OSN applications, providing high permeance and structural stability in diverse solvents and drying conditions.

Anti-drying Anti-swelling Covalent modified MoS2 Organic solvent nanofiltration Permselectivity TFNi

SCI ; EI

英语

第一 ; 通讯

20242416254355

Composite membranes ; Fabrication ; Layered semiconductors ; Molybdenum disulfide ; Nanocomposite films ; Nanofiltration ; Nanofiltration membranes ; Nanosheets ; Organic solvents ; Stability ; Thin films

Semiconducting Materials:712.1 ; Nanotechnology:761 ; Chemical Plants and Equipment:802.1 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Solid State Physics:933 ; Crystalline Solids:933.1

CHEMISTRY

2-s2.0-85195689184

Scopus

1.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Civil Engineering,The University of Hong Kong,Pokfulam,Hong Kong,China
3.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wang，Li,Zhang，Meng,Shu，Yufei,et al. Covalently modified MoS2 for the fabrication of interlayered thin film composite membranes with excellent structural stability against swelling and drying in organic solvent nanofiltration[J]. Journal of Membrane Science,2024,707.

Wang，Li.,Zhang，Meng.,Shu，Yufei.,Han，Qi.,Long，Li.,...&Tang，Chuyang Y..(2024).Covalently modified MoS2 for the fabrication of interlayered thin film composite membranes with excellent structural stability against swelling and drying in organic solvent nanofiltration.Journal of Membrane Science,707.

Wang，Li,et al."Covalently modified MoS2 for the fabrication of interlayered thin film composite membranes with excellent structural stability against swelling and drying in organic solvent nanofiltration".Journal of Membrane Science 707(2024).