Graphene oxide incorporated thin film nanocomposite nanofiltration membrane for enhanced salt removal performance

Lai, Gwo Sung; Lau, Woei‐Jye; Goh, Pei Sean; Ismail, Ahmad Fauzi; Yusof, Norazah; Tan, Yi

doi:10.1016/j.desal.2016.03.007

Cited by 332 publications

(94 citation statements)

References 54 publications

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“…Zeta potential of GO QDs in water as a function of pH is presented in Figure 2e. [6] They can be employed to modify the surface charge of TFC PA NF membranes for improving salt/dye rejection. [37] The zeta potential reached the minimum value of −34.36 mV at pH = 7.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

“…

strategy to produce fresh water from seawater and polluted water, without generating harmful by-products. [4][5][6] Generally TFC NF membranes are prepared through the interfacial polymerization (IP) method, forming a structure of an ultrathin polyamide (PA) selective layer on the surface of a porous substrate. They can produce higher water flux with lower energy consumption compared with reverse osmosis membranes.

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confidence: 99%

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Physically Coating Nanofiltration Membranes with Graphene Oxide Quantum Dots for Simultaneously Improved Water Permeability and Salt/Dye Rejection

Zhao

et al. 2019

Adv Materials Inter

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strategy to produce fresh water from seawater and polluted water, without generating harmful by-products. [3] Among them, thin-film composite nanofiltration (TFC NF) membranes are an important component. They can produce higher water flux with lower energy consumption compared with reverse osmosis membranes. They are efficient in removal of both conventional and emerging contaminants from water. In addition, the higher rejection of divalent ions compared with monovalent ones makes them promising in the application of water softening. [4][5][6] Generally TFC NF membranes are prepared through the interfacial polymerization (IP) method, forming a structure of an ultrathin polyamide (PA) selective layer on the surface of a porous substrate. The structure and physiochemical properties of the PA selective layer and the underlying substrate can be individually modified to improve the overall membrane performance. [7] However, the trade-off between water permeability and salt rejection, a so-called "upper bound" relation, is one of the key problems faced by TFC membranes. [8][9][10] It is highly desirable that we can fabricate TFC PA NF membranes with improved water permeability and salt/dye rejection for promoting both energy effectiveness and water quality.Incorporating hydrophilic nanoparticles (NPs), such as TiO 2 , [11] SiO 2 , [12,13] Al 2 O 3 , [14] Ag, [15] nanozeolite, [16,17] and graphene oxide quantum dots (GO QDs), [18] into the top PA selective layer to form thin-film nanocomposite (TFN) membranes has been demonstrated as an effective strategy to improve the water permeability of membranes. The improvement is resulted from the increased membrane hydrophilicity and additional water pathways introduced by the NPs. However, NPs tend to interfere the IP process of the PA selective layer, leading to undesired changes in pore structure, thickness, and surface roughness of membranes. [19,20] Besides, the incompatibility between inorganic NPs and the organic polymer matrix results in microporous defects. [21,22] Both of them account for the decrease in membrane salt rejection. Additionally, NPs are mainly embedded inside the polymer matrix, so that they are not effectively available for surface-based interactions.A physically bound coating of graphene oxide quantum dots (GO QDs) on thin-film composite polyamide nanofiltration (NF) membranes is prepared through a pressure-assisted filtration method to simultaneously improve the membranes' water permeability and salt/dye rejection. It is the first attempt to use carbon-based nanoparticles as surface coating to improve the efficiency of water filtration membranes. Influences of the GO QDs' coating on the hydrophilicity and surface charge of the membranes are investigated by water contact angle and zeta potential measurements. With the GO QDs' coating, the surface roughness and hydrophilicity of the membranes increase, and the membrane surface becomes more negatively charged. Water permeability and salt/dye rejection of GO QD-coated NF membranes increase simultaneously ...

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Section: Wwwadvmatinterfacesdementioning

confidence: 99%

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confidence: 99%

Physically Coating Nanofiltration Membranes with Graphene Oxide Quantum Dots for Simultaneously Improved Water Permeability and Salt/Dye Rejection

Zhao

et al. 2019

Adv Materials Inter

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“…GO was 100% sulfonated according to elemental analysis (EA) results. The FTIR spectra of the nanofillers are presented in (3,390 cm −1 ), aromatic CH stretching vibration (2,944 cm −1 ), stretching vibration in COOH (1,719 cm −1 ), unoxidized aromatic C=C bonds (1,521 cm −1 ), OH deformation (1,405 cm −1 ), C-O stretching vibration in epoxy group (1,197 cm −1 ), and C-O stretching vibration in alkoxy group (1,054 cm −1 ) [2,15,17,22,34]. The major vibration bands associated with SO 3 H and Si − O stretching (both at ca.…”

Section: Results and Discussion Characterization Of Functionalized Gomentioning

confidence: 99%

“…GO has been extensively studied as organic filler to a variety of polymer matrices as a mean of improving or modifying the properties of the polymers for different applications including fuel cells [13][14][15][16][17][18][19][20][21][22][23][24]. Polyethylene oxide was modified with 0.5% GO to create a proton conducting membrane with enhanced properties [25].…”

Section: Introductionmentioning

confidence: 99%

Polymer Nanocomposite Membranes of Sulfonated Poly(Styrene‐Isobutylene‐Styrene) With Sulfonated Graphene Oxide for Fuel Cell and Protective Clothing Applications

Ruiz-Colón

Pérez‐Pérez

Ortiz-Negrón

et al. 2018

Polymer Engineering & Sci

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Graphene oxide (GO) and its sulfonated analog (sGO) have been incorporated into sulfonated poly(styrene‐isobutylene‐styrene) (SO3H SIBS) in order to enhance its water retention and proton conductivity, while aiming to block permeant passage through the material. The polymer nanocomposite membranes (PNMs) were tested for two applications: direct methanol fuel cell and chemical and biological protective clothing. The transport properties of the membranes were determined as a function of SIBS sulfonation level (i.e., 37, 61, and 88 mol%), filler type (i.e., GO and sGO) and filler loading (i.e., 1, 3, 5, and 10 wt%). Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) confirmed the functionalization and incorporation of the fillers into SO3H SIBS. No significant changes were observed in the thermal stability or FTIR spectra of the PNMs after addition of the fillers. Dissimilar behaviors were observed for the ion exchange capacity, water absorption capabilities and transport properties of the membranes after incorporation of the fillers. Atomic force microscopy (AFM) phase images and Fenton's test results indicate that the oxidative stability of the PNMs is associated to the interconnectivity between the hydrophilic domains of the fillers and SO3H SIBS. The PNMs presented low permeability and high proton conductivity and thus, functioned adequately for both applications. POLYM. ENG. SCI., 59:E455–E467, 2019. © 2018 Society of Plastics Engineers

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“…Recently, the increase in hydrophilicity and the minimization of fouling of PSf membranes have been tested through a variety of solutions including modifying the surface [8,9], coating onto the membrane surface [10][11][12][13][14], and blending the hydrophilic materials into the membrane casting solution before fabricating the membrane [2,5,[15][16][17][18][19][20]. Among the aforementioned methods, the method of blending PSf with some hydrophilic polymers or inorganic nanoparticles to increase the surface hydrophilic and antifouling properties has proven remarkably effective [2,5,[20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Nguyen

Ngo

Dinh

et al. 2019

Journal of Chemistry

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In general, the polysulfone (PSf ) membranes are popular choices for water treatment because they have high thermal stability and good chemical resistance. On the other hand, the filtration capacity of the polysulfone membrane is limited because of its low water flux and poor antifouling ability, which are caused by the low surface hydrophilicity of the membranes. In this research, blending of graphene oxide (GO) or graphene oxide-titanium dioxide (GO-TiO 2 ) mixture into the polysulfone matrix had been carried out through the phase inversion method to enhance the hydrophilic and antifouling properties. Methods such as energydispersive X-ray spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and water contact angle measurement were used to examine the surface properties of the prepared membranes. Experimental results have led to a conclusion that graphene oxide can be stabilized into prepared membranes, and then, by reducing the water contact angle values, the surface of these membranes becomes hydrophilic, which increases the permeability and the water flux of methylene blue from the aqueous feed solution, improving the membrane's antifouling resistance.

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Graphene oxide incorporated thin film nanocomposite nanofiltration membrane for enhanced salt removal performance

Cited by 332 publications

References 54 publications

Physically Coating Nanofiltration Membranes with Graphene Oxide Quantum Dots for Simultaneously Improved Water Permeability and Salt/Dye Rejection

Physically Coating Nanofiltration Membranes with Graphene Oxide Quantum Dots for Simultaneously Improved Water Permeability and Salt/Dye Rejection

Polymer Nanocomposite Membranes of Sulfonated Poly(Styrene‐Isobutylene‐Styrene) With Sulfonated Graphene Oxide for Fuel Cell and Protective Clothing Applications

Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

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