DGIST Scholar: MoS₂-Pseudo-Crown Ether-Based Membrane for Highly Selective Li⁺/Na⁺ Ion Separation

Title: MoS₂-Pseudo-Crown Ether-Based Membrane for Highly Selective Li⁺/Na⁺ Ion Separation

Description: Direct lithium extraction (DLE), Resource recovery, Ion-selective membrane, Lithium separation, Two-dimensional (2D) nanofluidic, Molybdenum disulfide (MoS₂) membranes, Pseudo-crown ether (PCE), Concentration-gradient-driven separation, Smart ion gating behavior

Table Of Contents: Ⅰ. Introduction 1
1.1 Research Background 1
1.2 Sustainable Lithium Extraction Technology 2
1.2.1 Direct Lithium Extraction (DLE) 2
1.2.2 Classification of DLE Technologies 3
1.3 Nanofiltration Membrane technologies for lithium extraction 4
1.4 Design of Nanoconfined Channels for Ion Separation 6
1.4.1 Molybdenum Disulfide (MoS₂) 6
1.4.2 Polydopamine (PDA) 6
1.4.3 PCE@MoS₂/PDA Sub-nanochannel 7
Ⅱ. Experimental Method & Materials 9
2.1 Meterials 9
2.2 Synthesis of Monolayer MoS₂ 9
2.3 Polymerization of PCE 10
2.4 Preparation of the PCE@MoS₂/PDA membrane 11
2.5 Characterization 11
2.6 Evaluation of Water and Salt Transport Properties 12
2.6.1 Dead-end cell (pressure-driven) 12
2.6.2 H-cell (concentration gradient-driven) 13
Ⅲ. Results & Discussion 15
3.1 Charecterization of PCE 15
3.2 Characterization of PCE@MoS₂/PDA Nanochannels 18
3.3 Ion Transport and Selectivity Performance of PCE@MoS₂/PDA Membrane 22
3.3.1 Evaluation of Ion Permeability and Rejection 22
3.3.2 Evaluation of Ion Permeability and Selectivity 23
3.4 pH-responsive and Selective Ion Separation Performance Nanochannel 25
3.5 Ion Selective Transport Mechanism in PCE@MoS₂/PDA Nanochannel 27
Ⅳ. Conclusion 29
Ⅴ. Reference 30
Ⅵ. Summary 30

URI: https://scholar.dgist.ac.kr/handle/20.500.11750/59679
http://dgist.dcollection.net/common/orgView/200000946620

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