Fabrication of fouling resistant Ti3C2Tx (MXene)/cellulose acetate nanocomposite membrane for forward osmosis application

Alfahel, Radwan; Azzam, Reem S.; Hafiz, MhdAmmar; Hawari, Alaa H.; Pandey, Ravi P.; Mahmoud, Khaled A.; Hassan, Mohammad K.; Elzatahry, Ahmed A.

doi:10.1016/j.jwpe.2020.101551

Cited by 53 publications

(14 citation statements)

References 88 publications

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“…1%) which shows drastic decrease. A very low reverse salt flux along with high osmotic water flux is remarkable success in the FO membranes performance (Alfahel et al 2020).…”

Section: Fo Tests Of Developed Ca-tio 2 Nanocomposite Membranesmentioning

confidence: 99%

Development of CA-TiO2-incorporated thin-film nanocomposite forward osmosis membrane for enhanced water flux and salt rejection

Jain

Verma

Dhupper

et al. 2021

Int. J. Environ. Sci. Technol.

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Low access to electricity is a significant problem in small and distant areas, where power intensive treatment systems like reverse osmosis can complicate handling requirements. In order to mitigate the energy requirements in such areas, forward osmosis (FO) is an advance option to desalinate and provide potable water cost effectively. In this study, cellulose acetate (CA) was selected as cheap natural green polymer along with nanoscale titanium dioxide (TiO 2 ) particles with different loadings (0.5, 1, 1.5 wt.%) and polyvinyl pyrrolidone (PVP) as a binder to fabricate thin-film nanocomposite (TFNC) FO membranes. Various characterization techniques including XRD, EDS and SEM confirmed the capability of the developed membranes. The results convey that the use of titanium nanoparticles enhanced the membrane's surface morphology resulting in smaller pore sizes, stable water flux, low reverse salt flux and higher salt rejection. The pure water flux of the nanocomposite membranes was dramatically increased compared with that of commercial and control CA membrane. The TFNC CA-TiO 2 -1 (with 1% TiO 2 loading) was the finest membrane with an average water flux of about 58.21 (L/m 2 .h), reverse salt flux of 16.28 (g/m 2 .h) along with 92.6% salt rejection with 1 M NaCl as draw solution (DS). This work revealed that the membranes fabricated in this study are competitive with the current FO membranes. More importantly, they are anticipated to enable the use of energy-efficient and cost-effective FO-based desalination and would help to overcome global water scarcity and provide potable water to remote locations.

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“…1%) which shows drastic decrease. A very low reverse salt flux along with high osmotic water flux is remarkable success in the FO membranes performance (Alfahel et al 2020).…”

Section: Fo Tests Of Developed Ca-tio 2 Nanocomposite Membranesmentioning

confidence: 99%

Development of CA-TiO2-incorporated thin-film nanocomposite forward osmosis membrane for enhanced water flux and salt rejection

Jain

Verma

Dhupper

et al. 2021

Int. J. Environ. Sci. Technol.

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“…Therefore, a large part of research is carried out to control bio‐organic fouling and several new types of materials were introduced to improve antifouling properties of membranes 5, 37–41. Recently, 2D MXene‐based lamellar membranes 17, 29, 42–45 have grown as an active area of research and sufficient efforts were carried out to fabricate state‐of‐the‐art MXene membranes for water purification and desalination in order to improve their separation performance and antifouling properties 42, 46–51. Initially, Gogotsi et al.…”

Section: Separation Performance Of Mxene‐based Membranesmentioning

confidence: 99%

Recent Advances in MXene‐based Separation Membranes

et al. 2021

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Two‐dimensional (2D) materials with unique atomic thickness are promising candidate for high performance separation membrane. Several 2D materials such as graphene, graphene oxide (GO), metal‐organic frameworks (MOFs), covalent frameworks (COFs), transition metal dichalcogenides (TMDCs), etc have been studied as a separation membrane due to their outstanding properties such as high mechanical strength, large surface area, good chemical and thermal stability, ease of functionalization, and hydrophilic surface. Recently, transition metal carbide also known as MXene, a new member of layered membrane family has attended significant interest in water purification, desalination, gas separation, and pervaporation. Herein, the most recent advances in 2D MXene‐based membranes from both experimental and computational aspects are reviewed. Emphasis is placed on materials' structures, properties, fabrication methods, and potential applications in membrane technology. Finally, this review closes with several recommendation and new directions in this research area.

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“…23,24 Ti 3 C 2 T x implications for membrane fabrication showed promising results due to the appropriate water dispersity (an important factor for TFC fabrication), flexibility (an important factor for turnability of the PA layer), and physical−chemical stability (an important factor for the operation) of Ti 3 C 2 T x . 25,26 Alfahel et al 27 fabricated an MXene/cellulose acetate (CA) forward osmosis membrane as an alternative to commercial TFC FO membranes. With the addition of 8 wt % MXene, there was a 25% increase in water permeability compared to the bare CA membrane and enhanced fouling resistance, losing only 11% flux versus 32% flux decline for commercial membranes.…”

Section: Introductionmentioning

confidence: 99%

Functionalized-MXene Thin-Film Nanocomposite Hollow Fiber Membranes for Enhanced PFAS Removal from Water

Jamshidi

Beidaghi

et al. 2022

ACS Appl. Mater. Interfaces

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Due to adverse health effects and the broad sources of per-and polyfluoroakyl substances (PFAS), PFAS removal is a critical research area in water purification. We demonstrate the functionalization of thin-film composite (TFC) hollow fiber nanofiltration (HFN) membranes by MXene nanosheets during the interfacial polymerization (IP) process for enhanced removal of perfluorooctane sulfonic acid (PFOS) from water. A MXenepolyamide (PA) selective layer was fabricated on top of a polysulfone (PSF) hollow fiber support via IP of trimesoyl chloride (TMC) and a mixture of piperazine (PIP) and MXene nanosheets to form MXene-PA thin-film nanocomposite (TFN) membranes. Incorporating MXene nanosheets during the IP process tuned the morphology and negative surface charge of the selective layer, resulting in enhanced PFOS rejection from 72% (bare TFC) to more than 96% (0.025 wt % MXene TFN), while the water permeability was also increased from 13.19 (bare TFC) to 29.26 LMH/bar (0.025 wt % MXene TFN). Our results demonstrate that both electrostatic interaction and size exclusion are the main factors governing the PFOS rejection, and both are determined by PA selective layer structural and chemical properties. The lamella structure and interlayer of MXene nanosheets inside the PA layer provided different transport mechanisms for water, ions, and PFAS molecules, resulting in enhanced water permeability and PFAS rejection due to traveling through the membrane by both diffusions through the PA layer and the MXene intralayer channels. MXene nanosheets showed very promising capability as a 2D additive for tuning the structural and chemical properties of the PA layer at the permeability-rejection tradeoff.

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Fabrication of fouling resistant Ti3C2Tx (MXene)/cellulose acetate nanocomposite membrane for forward osmosis application

Cited by 53 publications

References 88 publications

Development of CA-TiO2-incorporated thin-film nanocomposite forward osmosis membrane for enhanced water flux and salt rejection

Development of CA-TiO2-incorporated thin-film nanocomposite forward osmosis membrane for enhanced water flux and salt rejection

Recent Advances in MXene‐based Separation Membranes

Functionalized-MXene Thin-Film Nanocomposite Hollow Fiber Membranes for Enhanced PFAS Removal from Water

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