Cellulose acetate/polyvinylidene fluoride based mixed matrix membranes impregnated with UiO-66 nano-MOF for reverse osmosis desalination

Koriem, Omneya A.; Showman, M. S.; El-Shazly, A.H.; Elkady, M.F.

doi:10.1007/s10570-022-04889-9

Cited by 18 publications

(6 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such hysteresis loops are observed in natural materials and signify aggregation of slit-shaped pores organized hierarchically. It has already been evidenced that delignification creates microporosity in the lignin matrix [24,25] . The specific BET measurements reveal the surface area as 44.65 and 54.83 m 2 g -1 for NW and TrW, while the average pore diameters are 7.97 and 6.08 nm for NW and TrW, respectively [Supplementary Table 1].…”

Section: Wood Modification and Characterizationmentioning

confidence: 99%

Layer-by-layer assembling redox wood electrodes for efficient energy storage

Farid,

Wang,

Razaq

et al. 2024

Energy Mater

View full text Add to dashboard Cite

The exploration of redox-active organic materials and low tortuous thick-electrodes is attractive for energy storage. The in-situ valorized lignin on raw wood surface accompanied by layer-by-layer deposition of electro-active materials endow such spatially distributed wood electrodes with high specific capacitance. Here, we report a layer-by-layer assembled ca.1.5 mm-thick redox wood hybrid electrode with 20 mg cm-2 electro-active mass loading for efficient energy storage. The in-situ modified surface lignin in treated wood (TrW) holds promise as redox-active material with enriched nanoporosity, carbonyl functionalities, and multi-phase ionic transport structure. The carbon nanotubes (CNTs) networking with in-situ polymerized polypyrrole (PPy) nanorods three-dimensionally in the lumen of TrW afford a wool-like, highly porous nanostructure. Such a hierarchical structured PPy@CNTs@TrW electrode offers a high areal capacitance of 1.46 F cm-2 with an extraordinary energy density of 0.983 mWh cm-3 (3.68 Wh kg-1) and power density of 5.4 mW cm-3 (20.25 W kg-1). Here, the valorized surface lignin contributes contributes to electrochemical energy storage accompanied by spatially distributed PPy@CNTs in low tortuous electrodes. The electrode offers extremely low electrochemical impedance of 0.61 Ω electrode resistance and 1.57 Ω electrolyte resistance. The hybrid wood electrode showcases even higher conductivity and energy/power density than thin carbonized wood and other state-of-the-art thin electrodes made of highly conductive three-dimensional networks. This work highlights the potential of in-situ valorized lignin in developing high-performance eco-friendly thick-electrodes for electrochemical energy storage applications.

show abstract

Section: Wood Modification and Characterizationmentioning

confidence: 99%

Layer-by-layer assembling redox wood electrodes for efficient energy storage

Farid,

Wang,

Razaq

et al. 2024

Energy Mater

View full text Add to dashboard Cite

show abstract

“…Then, the resulting membrane is heated for annealing. Finally, the resulting RO membrane is stored in water for further uses [26,[44][45][46][47][48]98].…”

Section: Cellulose Acetate Ro Membranementioning

confidence: 99%

“…The CA-RO membranes have been used for desalination [46,48,99,100], to remove ammonium from aqueous solutions [101], a trace of organic compounds and micropollutants are rejected from water more effectively by the CA-RO membranes [102], and fermentation broth separation [103].…”

Section: Cellulose Acetate Ro Membranementioning

confidence: 99%

Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review

et al. 2023

View full text Add to dashboard Cite

Cellulose acetate (CA) is a semisynthetic, biodegradable polymer. Due to its characteristics, CA has several applications, including water membranes, filament-forming matrices, biomedical nanocomposites, household tools, and photographic films. This review deals with topics related to the CA membranes, which are prepared using different techniques, such as the phase inversion technique. CA membranes are considered very important since they can be used as microfiltration membranes (MF), ultrafiltration membranes (UF), nanofiltration membranes (NF), reverse osmosis (RO) membranes, and forward osmosis (FO) membranes. Membrane fouling results from the accumulation of materials that the membrane rejects on the surface or in the membrane’s pores, lowering the membrane’s flux and rejection rates. There are various forms of CA membrane fouling, for instance, organic, inorganic, particulate fouling, and biofouling. In this review, strategies used for CA membrane antifouling are discussed and summarized into four main techniques: feed solution pretreatment, cleaning of the membrane surface, membrane surface modification, which can be applied using either nanoparticles, polymer reactions, surface grafting, or surface topography, and surface coating.

show abstract

“…In recent research, PVDF membranes have been modified by incorporating natural polymers such as cellulose. Several studies have reported excellent performance of PVDF membranes reinforced with cellulose, including high flux, strong rejection, high porosity, and excellent anti‐fouling properties [20,23–26] . This is primarily attributed to the hydroxyl groups of these natural polymers, which have been shown to enhance the formation of the beta phase in PVDF [27] .…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have reported excellent performance of PVDF membranes reinforced with cellulose, including high flux, strong rejection, high porosity, and excellent anti-fouling properties. [20,[23][24][25][26] This is primarily attributed to the hydroxyl groups of these natural polymers, which have been shown to enhance the formation of the beta phase in PVDF. [27] As a result, the hydrophilicity of PVDF membranes also increases, significantly reducing fouling effects.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study of Physicochemical Properties in Poly‐(Vinylidene Fluoride) Membranes Loaded with OPEFB's Lignin/ Lignosulfonate via Phase Inversion

Adi Nugroho,

Widiyanto,

Karimah

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

The development of membrane technology is rapidly advancing, such as hydrophilic PVDF membranes, which provide anti‐fouling properties to the membrane. Therefore, this research innovates the development of hydrophilic PVDF membranes by incorporating lignin‐lignosulfonate fillers from OPEFBs in situ. This study successfully prepared hybrid PVDF membranes using the phase inversion method. ATR‐FTIR, XRD, and TGA/DSC analyses confirmed that the addition of 2 % filler promoted the formation of the β‐phase in PVDF, which was more dominant than with the addition of 4 % filler, especially in the PLs2 % membrane. SEM images of the membranes showed an asymmetric structure with finger‐like and sponge‐like pores. Interactive 3D surface imaging demonstrated increased pore potential peaks when lignosulfonate was added compared to lignin. The addition of 4 % filler had a hydrophilic‐hydrophobic repelling effect, increasing the porosity and water absorption of the PL4 % and PLs4 % membranes. Phase inversion membranes were relatively hydrophilic with a water contact angle of 61°, and adding filler reduced the membrane‘s contact angle by 8°. Based on the obtained results, it can be concluded that PVDF hybrid membranes with lignin and lignosulfonate fillers have significant potential for development in membrane technology applications that require hydrophilic membranes, such as wastewater treatment and seawater desalination.

show abstract

Cellulose acetate/polyvinylidene fluoride based mixed matrix membranes impregnated with UiO-66 nano-MOF for reverse osmosis desalination

Cited by 18 publications

References 63 publications

Layer-by-layer assembling redox wood electrodes for efficient energy storage

Layer-by-layer assembling redox wood electrodes for efficient energy storage

Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review

Comprehensive Study of Physicochemical Properties in Poly‐(Vinylidene Fluoride) Membranes Loaded with OPEFB's Lignin/ Lignosulfonate via Phase Inversion

Contact Info

Product

Resources

About