High-Performance Thin-Film Composite Membrane with an Ultrathin Spray-Coated Carbon Nanotube Interlayer

Zhou, Zongyao; Hu, Yunxia; Boo, Chanhee; Liu, Zhongyun; Li, Jinqiang; Deng, Luyao; An, Xiaochan

doi:10.1021/acs.estlett.8b00169

Cited by 187 publications

(155 citation statements)

References 36 publications

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“…Among recently reported ultrathin membranes, the most promising materials for OSN are the PA and DLC membranes 2,11. It is worth noting that ultrathin PA membranes are also widely used for water filtration 12–19. Other promising ultrathin membranes for water filtration include those constructed by proteins,7 single‐walled carbon nanotubes (SWCNT),21–24 metal oxide nanowires,25,26 metal hydroxide nanostrands,27–30 graphene nanosheets,31,32 graphene oxide (GO) nanosheets,33–38 WS 2 nanosheets,40 and MoS 2 nanosheets 41…”

Section: For Liquid Filtrationmentioning

confidence: 99%

“…Aside from OSN, TFC membranes are also widely used in water desalination and wastewater purification 12–19. Because the PA active layer determines the separation performance of the TFC membrane, the construction of an ultrathin and high‐quality PA active layer is critical for producing an advanced TFC membrane with high water permeance and solute rejection.…”

Section: For Liquid Filtrationmentioning

confidence: 99%

“…The development of TFC NF membranes with ultrathin PA active layers break through the longstanding “tradeoff” relationship between permeance and salt rejection in TFC membranes and bring NF membrane performance to a new level 14,18,19. TFC forward osmosis (FO) membranes with ultrathin PA active layers can also be fabricated using a PD‐SWCNT network membrane as a support layer 16. These membranes exhibit higher water permeance and much lower internal concentration polarization than conventional TFC FO membranes.…”

Section: For Liquid Filtrationmentioning

confidence: 99%

“…The mechanical strength of the GO and SWCNT membranes cannot be mentioned in the same breath as the existing membranes. Traditional TFC NF and RO membranes still have better salt rejection performance than the GO membranes and the SWCNT‐mediated TFC membranes 14–17,68,84. The long‐term stability of the GO and SWCNT membranes are unknown, while commercial membranes have withstood the test of time.…”

Section: Summary and Perspectivementioning

confidence: 99%

“…For instance, by using a porous nanostrand membrane as a sacrificial layer, polyamide (PA) membranes as thin as 8.4 nm and diamond‐like carbon (DLC) membranes with thickness down to 10 nm were fabricated via interfacial polymerization (IP) reaction and chemical vapor deposition (CVD), respectively 2,11. Moreover, a series of thin‐film composite (TFC) membranes with a PA active layer less than 15 nm were fabricated via IP reaction on porous nanostrands or nanotube support membranes 12–19. 1D (such as nanotubes,20–24 nanowires,25,26 and nanostrands27–30) and 2D nanomaterials (such as graphene nanosheet derivatives31–38 and metal sulfide nanosheets39,40) have also been widely adopted to fabricate ultrathin network or laminar membranes with thickness of tens of nanometers via vacuum filtration.…”

Section: Introductionmentioning

confidence: 99%

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Ultrathin Membranes: A New Opportunity for Ultrafast and Efficient Separation

Gao

Wang

Fang

et al. 2020

Adv Materials Technologies

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membrane thickness L. However, mass transfer in a nonporous membrane is often described by solution diffusion theory, expressed by the integration of Fick's first law [8] J P p L = ∆ /where the permeation flux J of a dense membrane is directly proportional to the membrane permeability P and the net effective pressure difference (the hydraulic pressure difference minus the osmotic pressure difference) Δp, while inversely proportional to the membrane thickness L. Hence, a feasible concept for obtaining a high permeance membrane is to reduce the membrane thickness. This observation has driven much of the development of ultrathin membranes. An ideal ultrathin membrane or active layer should be as thin as possible to reduce the transfer path length and transfer resistance simultaneously without sacrificing its effective pore size. [9,10] Advanced membranes integrating both ultrathin membranes and large effective pore sizes to achieve ultrahigh permeance, excellent selectivity, and good mechanical stability are highly desired and the subject of extensive research.The rapid development of nanomaterials has provided new avenues toward ultrathin membranes construction. For instance, by using a porous nanostrand membrane as a sacrificial layer, polyamide (PA) membranes as thin as 8.4 nm and diamond-like carbon (DLC) membranes with thickness down to 10 nm were fabricated via interfacial polymerization (IP) reaction and chemical vapor deposition (CVD), respectively. [2,11] Moreover, a series of thin-film composite (TFC) membranes with a PA active layer less than 15 nm were fabricated via IP reaction on porous nanostrands or nanotube support membranes. [12][13][14][15][16][17][18][19] 1D (such as nanotubes, [20][21][22][23][24] nanowires, [25,26] and nanostrands [27][28][29][30] ) and 2D nanomaterials (such as graphene nanosheet derivatives [31][32][33][34][35][36][37][38] and metal sulfide nanosheets [39,40] ) have also been widely adopted to fabricate ultrathin network or laminar membranes with thickness of tens of nanometers via vacuum filtration. The thickness and effective pore size of these nanomaterial-based membranes can be controlled to some extent by tuning the filtrated volume of the nanomaterial dispersion solution.In this progress report, some promising ultrathin membranes are highlighted for liquid filtration or gas separation. In each section, the designs, fabrication techniques, and separation performances of these membranes are introduced. The Developing advanced membranes with both high permeance and selectivity to enable ultrafast and efficient separation is a persistent pursuit by materials scientists. In recent years, diverse ultrathin membranes with nanometer-scale thickness and unique membrane structures have been developed. These materials show ultrahigh permeance and excellent selectivity in water desalination, dye rejection, oil-water purification, and gas separation applications. Herein, current state-of-the-art ultrathin membranes are introduced, including polyamide membranes, diamond-like carbon m...

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Section: For Liquid Filtrationmentioning

confidence: 99%

Section: For Liquid Filtrationmentioning

confidence: 99%

Section: For Liquid Filtrationmentioning

confidence: 99%

Section: Summary and Perspectivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultrathin Membranes: A New Opportunity for Ultrafast and Efficient Separation

Gao

Wang

Fang

et al. 2020

Adv Materials Technologies

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Antibiofouling Thin‐Film Nanocomposite Membranes for Sustainable Water Purification

Pang

Meier‐Haack

Huang³

et al. 2021

Advanced Sustainable Systems

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Membrane technology provides a reliable and powerful solution to combat the global water crisis by producing fresh water through sustainable desalination. However, the decline in system performance due to membrane biofouling is a limitation and significant efforts have been made to explore fouling control mechanisms and develop simple methods to inhibit or eliminate membrane fouling. Nanotechnology has increased the number of options for the development of antibiofouling membranes by incorporating nanoparticles within the polyamide layer to produce a thin‐film nanocomposite (TFN) structure. This review presents recent advances in the preparation of antifouling TFN membranes and incorporation of different nanoparticles into the design. The review also discusses the strategies and mechanisms for reducing membrane fouling and proposes a future outlook for the field.

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Two‐Dimensional LDH Film Templating for Controlled Preparation and Performance Enhancement of Polyamide Nanofiltration Membranes

Yang

Dou

et al. 2023

Angewandte Chemie

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Tailored design of high-performance nanofiltration membranes that can be used in a variety of applications such as water desalination, resource recovery, and sewage treatment is desirable. Herein, we describe the use of layered double hydroxides (LDH) intermediate layer to control the interfacial polymerization between trimesoyl chloride (TMC) and piperazine (PIP) for the preparation of polyamide (PA) membrane. The dense surface of LDH layer and its unique mass transfer behavior influence the diffusion of PIP, and the supporting role of the LDH layer allows the formation of ultrathin PA membranes. By only changing the concentration of PIP, a series of membranes with controllable thickness from 10 to 50 nm and tunable crosslinking-degree can be prepared. The membrane prepared with a higher concentration of PIP shows excellent performance for divalent salt retention with water permeance of 28 Lm À 2 h À 1 bar À 1 , high rejection of 95.1 % for MgCl 2 and 97.1 % for Na 2 SO 4 . While the membrane obtained with a lower concentration of PIP can sieve dye molecules of different sizes with a flux of up to 70 Lm À 2 h À 1 bar À 1 . This work demonstrates a novel strategy for the controllable preparation of highperformance nanofiltration membranes and provides new insights into how the intermediate layer affects the IP reaction and the final separation performance.

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High-Performance Thin-Film Composite Membrane with an Ultrathin Spray-Coated Carbon Nanotube Interlayer

Cited by 187 publications

References 36 publications

Ultrathin Membranes: A New Opportunity for Ultrafast and Efficient Separation

Ultrathin Membranes: A New Opportunity for Ultrafast and Efficient Separation

Antibiofouling Thin‐Film Nanocomposite Membranes for Sustainable Water Purification

Two‐Dimensional LDH Film Templating for Controlled Preparation and Performance Enhancement of Polyamide Nanofiltration Membranes

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