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

Ultrathin Molecular-Layer-by-Layer Polyamide Membranes: Insights from Atomistic Molecular Simulations

2016 ◽  
Vol 120 (35) ◽  
pp. 9484-9494 ◽  
Author(s):  
Thilanga P. Liyana-Arachchi ◽  
James F. Sturnfield ◽  
Coray M. Colina
Keyword(s):  
Molecular Layer ◽  
Molecular Simulations ◽  
Layer By Layer ◽  
Polyamide Membranes

scholarly journals Thickness-dependent permeance of molecular layer-by-layer polyamide membranes

2021 ◽  
Vol 618 ◽  
pp. 118637
Author(s):  
William D. Mulhearn ◽  
Vladimir P. Oleshko ◽  
Christopher M. Stafford
Keyword(s):  
Molecular Layer ◽  
Layer By Layer ◽  
Polyamide Membranes

Fabrication of Ultrathin Membrane via Layer-by-Layer Self-assembly Driven by Hydrophobic Interaction Towards High Separation Performance

2013 ◽  
Vol 5 (24) ◽  
pp. 13275-13283 ◽  
Author(s):  
Jing Zhao ◽  
Fusheng Pan ◽  
Pan Li ◽  
Cuihong Zhao ◽  
Zhongyi Jiang ◽  
...  
Keyword(s):  
Hydrophobic Interaction ◽  
Self Assembly ◽  
Separation Performance ◽  
Layer By Layer ◽  
High Separation

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.

scholarly journals Optimization of Mordenite Membranes Using Sucrose Precursor for Pervaporation of Water-Ethanol Mixtures

Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 160
Author(s):  
Abdulaziz A. Alomair ◽  
Yousef Alqaheem
Keyword(s):  
Pyrolysis Temperature ◽  
Operating Temperature ◽  
Selective Adsorption ◽  
Sucrose Concentration ◽  
Low Cost ◽  
Water Flux ◽  
Separation Performance ◽  
Carbon Membranes ◽  
Adsorption Of Water ◽  
High Separation

Post-treated mordenite membranes were prepared using sucrose (C12H22O11) as a carbon precursor to block any pinholes and defects in the zeolite layer. The pervaporation (PV) process was used to separate ethanol from the water. The effects of the sucrose concentration and the pyrolysis temperature (650–850 °C) were investigated, and the resulting high separation performance compared to those post/pre-treated membranes was reported in the literature. In this study, mordenite carbon membranes yielded a water/ethanol separation factor of 990.37 at a water flux of 9.10 g/m2h. The influence of the operating temperature on the performance of the membrane also was considered. It was concluded that the selective adsorption of water through zeolite pores was achieved. The entire preparation procedure was achieved using a rapid, low-cost preparation process.

Chelation Assembly of Cellulose Nanohydrogel onto Flower-Like Structured Foam with Underwater Superoleophobicity for Highly Efficient Oil–Water Separation

NANO ◽  
2021 ◽  
pp. 2150061
Author(s):  
Yuntian Wan ◽  
Xue Lin ◽  
Zhongshuai Chang ◽  
Xiaohui Dai ◽  
Jiangdong Dai
Keyword(s):  
Water Flux ◽  
Separation Performance ◽  
Layer By Layer ◽  
Potential Candidate ◽  
Oily Wastewater ◽  
Water Separation ◽  
Composite Foam ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

Currently, with the increasingly serious pollution problem of oily wastewater, it is urgent to develop advanced materials and methods. In this work, a Fe(III)-CMC@Ni(OH)2@Ni composite foam with superhydrophilic and underwater superoleophobicity was fabricated by an in situ growth of flower-like Ni(OH)2 nanoparticles and chelated assembly of Fe(III)-CMC nanohydrogel via a layer-by-layer self assembly using Fe[Formula: see text] ion and carboxymethyl cellulose (CMC). The composite foam could separate various oil/water mixtures and exhibited excellent efficiency over 99%. This foam possessed ultrahigh water flux (220000[Formula: see text]L m[Formula: see text] h[Formula: see text] and better resistant to penetration pressure (1.3[Formula: see text]kPa). After 30 cycles, the oil–water separation performance reduced only 0.5%, but the foam structure was still stable that guarantees a better lifetime. Besides, this composite foam showed anti-fouling, unique durability and excellent corrosion resistance performance. Taking into account all good properties, Fe(III)-CMC@Ni(OH)2@Ni composite foam was expected to be a potential candidate for responding to all kinds of complex oily wastewater conditions.

Plasticization resistant crosslinked polyurethane gas separation membranes

2016 ◽  
Vol 4 (44) ◽  
pp. 17431-17439 ◽  
Author(s):  
Ali Pournaghshband Isfahani ◽  
Behnam Ghalei ◽  
Kazuki Wakimoto ◽  
Rouhollah Bagheri ◽  
Easan Sivaniah ◽  
...  
Keyword(s):  
Gas Separation ◽  
Separation Performance ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
High Separation ◽  
Separation Conditions

We generate crosslinked PU membranes that retain high separation performance and provide enhanced plasticization resistance under realistic industrial separation conditions.

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