Swelling of Ultrathin Molecular Layer-by-Layer Polyamide Water Desalination Membranes

2013 ◽  
Vol 51 (22) ◽  
pp. 1647-1655 ◽  
Author(s):  
Edwin P. Chan ◽  
Allison P. Young ◽  
Jung-Hyun Lee ◽  
Christopher M. Stafford
Keyword(s):  
Molecular Layer ◽  
Water Desalination ◽  
Layer By Layer

Molecular Layer-by-Layer Assembled Thin-Film Composite Membranes for Water Desalination

2013 ◽  
Vol 25 (34) ◽  
pp. 4778-4782 ◽  
Author(s):  
Joung-Eun Gu ◽  
Seunghye Lee ◽  
Christopher M. Stafford ◽  
Jong Suk Lee ◽  
Wansuk Choi ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Layer ◽  
Composite Membranes ◽  
Water Desalination ◽  
Layer By Layer ◽  
Film Composite ◽  
Thin Film Composite

Low-Resistance Monovalent-Selective Cation Exchange Membranes for Energy-Efficient Ion Separations

2020 ◽  
Author(s):  
Eyal Wormser ◽  
Oded Nir ◽  
Eran Edri
Keyword(s):  
Cation Exchange ◽  
Brackish Water ◽  
Molecular Layer ◽  
Water Desalination ◽  
Molecular Layer Deposition ◽  
Selective Layer ◽  
Trade Off ◽  
Membrane Selectivity ◽  
Layer Deposition ◽  
Water Energy Nexus

<div> <div> <div> <p>The desalination of brackish water provides water to tens of millions of people around the world, but current technologies deplete much needed nutrients from the water, which is detrimental to both public health and agriculture. A selective method for brackish water desalination, which retains the needed nutrients, is electrodialysis (ED) using monovalent-selective cation exchange membranes (MVS-CEMs). However, due to the trade-off between membrane selectivity and resistance, most MVS-CEMs demonstrate either high transport resistance or low selectivity, which increase energy consumption and hinder the use of such membranes for brackish water desalination by ED. Here, we used molecular layer deposition (MLD) to uniformly coat CEMs with ultrathin layers of alucone. The positive surface charge of the alucone instills monovalent selectivity in the CEM. Using MLD enabled us to precisely control and minimize the selective layer thickness, while the flexibility and nanoporosity of the alucone prevent cracking and delamination. Under conditions simulating brackish water desalination, this compound provides monovalent selectivity with negligible added resistance—the smallest reported resistance for a monovalent-selective layer, to date—thereby alleviating the selectivity–resistance trade-off. Addressing the water–energy nexus, we show that using these membranes in ED will cut at least half of the energy required for selective brackish water desalination with current MVS-CEMs. </p> </div> </div> </div>

Radical-triggered cross-linking for molecular layer deposition of SiAlCOH hybrid thin films

2021 ◽  
Author(s):  
Kristina Ashurbekova ◽  
Karina Ashurbekova ◽  
Iva Saric ◽  
Evgeny Modin ◽  
Mladen Petravic ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Growth ◽  
Molecular Layer ◽  
Thin Film Growth ◽  
Cross Linking ◽  
Layer By Layer ◽  
Molecular Layer Deposition ◽  
Layer Deposition ◽  
Hybrid Thin Films ◽  
Enhanced Stability

We developed a thin film growth with a radical-initiated cross-linking of vinyl groups in a layer-by-layer manner via molecular layer deposition (MLD). The cross-linked film exhibited improved properties like 12% higher density and enhanced stability compared to the non-cross-linked film.

Molecular layer-by-layer assembled forward osmosis membranes

2015 ◽  
Vol 488 ◽  
pp. 111-120 ◽  
Author(s):  
Soon-Bum Kwon ◽  
Jong Suk Lee ◽  
Soon Jin Kwon ◽  
Seong-Taek Yun ◽  
Seockheon Lee ◽  
...  
Keyword(s):  
Molecular Layer ◽  
Forward Osmosis ◽  
Layer By Layer

Soft electronics on asymmetrical porous conducting membranes by molecular layer-by-layer assembly

2018 ◽  
Vol 254 ◽  
pp. 916-925 ◽  
Author(s):  
Hyun Kim ◽  
Tae Sik Eom ◽  
Whirang Cho ◽  
Kyungbae Woo ◽  
Yuran Shon ◽  
...  
Keyword(s):  
Molecular Layer ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Soft Electronics ◽  
Conducting Membranes ◽  
Layer Assembly

Tailoring interlayer structure of molecular layer-by-layer assembled polyamide membranes for high separation performance

2015 ◽  
Vol 356 ◽  
pp. 659-667 ◽  
Author(s):  
Joung-Eun Gu ◽  
Jong Suk Lee ◽  
Sang-Hee Park ◽  
Il Tae Kim ◽  
Edwin P. Chan ◽  
...  
Keyword(s):  
Molecular Layer ◽  
Separation Performance ◽  
Layer By Layer ◽  
Interlayer Structure ◽  
High Separation ◽  
Polyamide Membranes
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