High water permeable free-standing cellulose triacetate/graphene oxide membrane with enhanced antibiofouling and mechanical properties for forward osmosis

Wang, Xiao; Wang, Xingzu; Xiao, Ping; Li, Jing; Tian, Enling; Zhao, Yuntao; Ren, Yiwei

doi:10.1016/j.colsurfa.2016.08.077

Cited by 66 publications

(22 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The biofilm produced by bacteria contains hydrophobic substances such as lipids and protein [ 29 ]. The increase in the hydrophilicity in the membrane surface was then expected to reduce the adhesion of microbial products [ 30 ]. Moreover, the presence of oxygen-containing functional groups, such as hydroxyl (−OH), carboxyl (−COOH) and epoxy groups, is well-known to improve the membrane hydrophilicity [ 31 , 32 ] because it creates strong intramolecular dipole moments.…”

Section: Resultsmentioning

confidence: 99%

Development of Polyvinylidene Fluoride Membrane by Incorporating Bio-Based Ginger Extract as Additive

et al. 2020

View full text Add to dashboard Cite

Biofouling on the membrane surface leads to performance deficiencies in membrane filtration. In this study, the application of ginger extract as a bio-based additive to enhance membrane antibiofouling properties was investigated. The extract was dispersed in a dimethyl acetamide (DMAc) solvent together with polyvinylidene fluoride (PVDF) to enhance biofouling resistance of the resulting membrane due to its antibiotic property. The concentrations of the ginger extract in the dope solution were varied in the range of 0–0.1 wt %. The antibacterial property of the resulting membranes was assessed using the Kirby Bauer disc diffusion method. The results show an inhibition zone formed around the PVDF/ginger membrane against Escherichia coli and Staphylococcus aureus demonstrating the efficacy of the residual ginger extract in the membrane matrix to impose the antibiofouling property. The addition of the ginger extract also enhanced the hydrophilicity in the membrane surface by lowering the contact angle from 93° to 85°, which was in good agreement with the increase in the pure water flux of up to 62%.

show abstract

Section: Resultsmentioning

confidence: 99%

Development of Polyvinylidene Fluoride Membrane by Incorporating Bio-Based Ginger Extract as Additive

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Researchers have successfully prepared functionalized graphene–incorporated phase inversion membranes in a variety of polymer matrices, including poly(vinylidene fluoride) (PVDF), PSf, poly(vinyl chloride) (PVC), PEI, poly(ether sulfone) (PES), poly( m ‐phenylene isophthalamide) (PMIA), and cellulose triacetate (CTA) . The casted membrane composites showed enhanced water treatment properties due to the features of functionalized graphene and its positive effect on the pore structure.…”

Section: Preparation Of Functionalized Graphene–polymer Membranesmentioning

confidence: 99%

Graphene Oxide‐Based Polymeric Membranes for Water Treatment

Xiao

Zhao

Tian

et al. 2018

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

their energy consumption is much lower than that of thermal approaches. [3] Therefore, membrane technologies are regarded as cost-effective candidates and play an increasingly important role in the treatment of natural waters and wastewaters. [4] Membrane processes for water purification and desalination can be generally classified into microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), and emerging forward osmosis (FO) according to the pore size of the membrane and the respective rejection mechanism. The materials used to fabricate the membranes cover a wide range of polymers and inorganic materials. By far, polymeric membranes are the most widespread type due to their high processability, high flexibility, and low cost. [5][6][7] Traditional asymmetric membranes that contain only one type of polymer are mainly used for UF and a few NF applications. These membranes exhibit an asymmetric porous structure that consists of a thin nano porous active layer and a microporous underlying layer. MF membranes, however, possess a relatively symmetric micro porous structure. These porous membranes are mainly fabricated by phase inversion. For RO, FO, and most NF membranes that reject nanoscale solutes, an individual nonporous, dense, and thin polyamide (PA) active layer is normally required and is deposited onto a porous support layer to ensure a high selectivity. The active layer is prepared via interfacial polymerization (IP), while the support layer can be fabricated by phase inversion. These membranes are known as thin film composite (TFC) membranes, and the layers are comprised of different polymers. TFC membranes possess superior permeability over that of first-generation cellulose acetate membranes. [8,9] Although polymeric membranes have been widely reported in scientific studies and utilized for industrial applications, they are restricted by the inherent limitations of the material, such as a permeability/selectivity trade-off and a low fouling resistance. The current ability to control the membrane structure in both molecular-level design and fabrication process is not satisfactory. [10] In the last decade, the incorporation of nanomaterials into polymeric membranes has gained considerable attention owing to the potential of the resulting materials for overcoming the above limitations. [11,12] These advanced composite membranes have shown enhanced performance with a low loading of nanoparticles (NPs), including zeolites, [13][14][15] silica, [16][17][18][19][20][21][22] Membrane technologies for water treatment and desalination are increasingly developed and utilized to address the global challenges of water security and supply. Membrane-based separations can produce water with desirable qualities from a wide range of water sources, such as groundwater, seawater, brackish water, and wastewater. However, the membranes, which are typically made from polymers, are still restricted by their inherent limitations, including a permeability/selectivity trade-off and a high fouling prop...

show abstract

“…10 The hybridization of NC with GO has been previously studied, proving great synergistic interaction between GO and cellulose nanofibrils (CNFs), presumably due to good interfacial contact between both components, suggesting that the flexible 1D-structure of CNFs allows establishing efficient bonding with the 2D-GOnanosheets. 11 The potential of cellulose/graphene oxide-based composite films has been readily explored for different applications, for instance in rechargeable zinc-air batteries, 12 forward osmosis 13 and ion permeation. 14 Moreover, in our previously published work, 15 we have observed that the incorporation of a layer of GO sheets onto CNF membranes via sequential water filtration (to form layered-composite CNF-GO membranes) improves the performance of the cellulosic membranes in several aspects; for instance, their mechanical properties dramatically improves under dry, wet (4-fold higher strength than pristine CNF membranes) and re-dried conditions.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose/graphene oxide layered membranes: elucidating their behaviour during filtration of water and metal ions in real time

et al. 2019

View full text Add to dashboard Cite

show abstract

High water permeable free-standing cellulose triacetate/graphene oxide membrane with enhanced antibiofouling and mechanical properties for forward osmosis

Cited by 66 publications

References 47 publications

Development of Polyvinylidene Fluoride Membrane by Incorporating Bio-Based Ginger Extract as Additive

Development of Polyvinylidene Fluoride Membrane by Incorporating Bio-Based Ginger Extract as Additive

Graphene Oxide‐Based Polymeric Membranes for Water Treatment

Nanocellulose/graphene oxide layered membranes: elucidating their behaviour during filtration of water and metal ions in real time

Contact Info

Product

Resources

About