Journal ArticleDOI
Tannic Acid/Fe3+ Nanoscaffold for Interfacial Polymerization: Toward Enhanced Nanofiltration Performance
Zhiqing Yang,Zhiwen Zhou,Hao Guo,Zhikan Yao,X. Ma,X. Ma,Xiaoxiao Song,Shien-Ping Feng,Chuyang Y. Tang +8 more
TLDR
Compared to conventional TFC nanofiltration membranes, the novel TFCn membrane successfully overcame the longstanding permeability and selectivity trade-off and paves a new avenue for fabricating high performance TFC membranes.Abstract:
Conventional thin-film composite (TFC) membranes suffer from the trade-off relationship between permeability and selectivity, known as the “upper bound”. In this work, we report a high performance thin-film composite membrane prepared on a tannic acid (TA)-Fe nanoscaffold (TFCn) to overcome such upper bound. Specifically, a TA-Fe nanoscaffold was first coated onto a polysulfone substrate, followed by performing an interfacial polymerization reaction between trimesoyl chloride (TMC) and piperazine (PIP). The TA-Fe nanoscaffold enhanced the uptake of amine monomers and provided a platform for their controlled release. The smaller surface pore size of the TA-Fe coated substrate further eliminated the intrusion of polyamide into the substrate pores. The resulting membrane TFCn showed a water permeability of 19.6 ± 0.5 L m2– h–1 bar–1, which was an order of magnitude higher than that of control TFC membrane (2.2 ± 0.3 L m–2 h–1 bar–1). The formation of a more order polyamide rejection layer also significantly ...read more
Citations
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Journal ArticleDOI
The upper bound of thin-film composite (TFC) polyamide membranes for desalination
TL;DR: This work analyzed the tradeoff between the water permeance and the water/NaCl selectivity for TFC membranes gathered from more than 300 published papers, providing a critical tool for the evaluation and benchmarking of future membrane development works in the context of desalination and water reuse.
Journal ArticleDOI
Potable Water Reuse through Advanced Membrane Technology.
Chuyang Y. Tang,Zhiqing Yang,Hao Guo,Jason J. Wen,Long D. Nghiem,Emile Cornelissen,Emile Cornelissen +6 more
TL;DR: The current status and future perspectives of advanced membrane processes to meet potable water reuse are highlighted and opportunities and challenges are identified in the context of water reuse.
Journal ArticleDOI
A Critical Review on Thin-Film Nanocomposite Membranes with Interlayered Structure: Mechanisms, Recent Developments, and Environmental Applications
Zhiqing Yang,Peng Fei Sun,Peng Fei Sun,Xianhui Li,Bowen Gan,Bowen Gan,Li Wang,Xiaoxiao Song,Hee Deung Park,Chuyang Y. Tang +9 more
TL;DR: The use of nanostructured interlayers not only improves the formation of polyamide rejection layers but also provides an optimized water transport path, which enables TFNi membranes to potentially overcome the longstanding trade-off between membrane permeability and selectivity.
Journal ArticleDOI
Ultrathin Polyamide Nanofiltration Membrane Fabricated on Brush-Painted Single-Walled Carbon Nanotube Network Support for Ion Sieving
Shoujian Gao,Shoujian Gao,Yuzhang Zhu,Yuqiong Gong,Zhenyi Wang,Zhenyi Wang,Wangxi Fang,Wangxi Fang,Jian Jin,Jian Jin,Jian Jin +10 more
TL;DR: This work demonstrates a practical route toward the controllable large-scale fabrication of the TFC membrane with an SWCNT network support for ion and molecule sieving and is expected to boost the mass production and practical applications of state-of-the-art membranes composed of one-dimensional and two-dimensional Nanomaterials as well as the nanomaterial-supported TFC membranes.
Journal ArticleDOI
New Insights into the Role of an Interlayer for the Fabrication of Highly Selective and Permeable Thin-Film Composite Nanofiltration Membrane.
TL;DR: A triple-layered TFC nanofiltration membrane consisting of a polyamide (PA) top layer covered on a poly(ether sulfone) microfiltration membrane with a carbon nanotube (CNT) interlayer showed a great promise for applications in both wastewater treatment and dyes recycling.
References
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Journal ArticleDOI
Maximizing the right stuff: The trade-off between membrane permeability and selectivity
TL;DR: The permeability/selectivity trade-off is discussed, similarities and differences between synthetic and biological membranes are highlighted, challenges for existing membranes are described, and fruitful areas of future research are identified.
Journal ArticleDOI
One-Step Assembly of Coordination Complexes for Versatile Film and Particle Engineering
Hirotaka Ejima,Joseph J. Richardson,Kang Liang,James P. Best,Martin P. van Koeverden,Georgina K. Such,Jiwei Cui,Frank Caruso +7 more
TL;DR: Aqueous deposition is performed on a range of planar as well as inorganic, organic, and biological particle templates, demonstrating an extremely rapid technique for producing structurally diverse, thin films and capsules that can disassemble.
Journal ArticleDOI
Sub–10 nm polyamide nanofilms with ultrafast solvent transport for molecular separation
TL;DR: Thin, crumpled polymer films on ceramic supports are high-flux membranes for removing small molecules from organic fluids and were sufficiently rigid that the crumpling textures could withstand pressurized filtration, resulting in increased permeable area.
Journal ArticleDOI
Polyamide membranes with nanoscale Turing structures for water purification
TL;DR: This work uses a facile route based on interfacial polymerization to generate Turing-type polyamide membranes for water purification that exhibit excellent water-salt separation performance that surpasses the upper-bound line of traditional desalination membranes.
Journal ArticleDOI
Impacts of support membrane structure and chemistry on polyamide–polysulfone interfacial composite membranes
A. K. Ghosh,Eric M.V. Hoek +1 more
TL;DR: In this article, the properties of polyamide thin films formed via identical interfacial polymerization conditions over porous polysulfone supports with different physical and chemical properties were discussed, including dextran rejections, water contact angles, and surface roughness statistics.