Surface modification of polyamide thin film composite membrane by coating of titanium dioxide nanoparticles

Ngo, Thu Hong Anh; Dinh, Khai; Nguyen, Thu Thi Minh; Mori, Shinsuke; Tran, Dung Thi

doi:10.1016/j.jsamd.2016.10.002

Cited by 41 publications

(23 citation statements)

References 21 publications

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“…However, the membrane properties can be improved by modifying the thin layer using hydrophilic nanoparticles . The nanoparticles that have been previously used for TFN membrane synthesis include zeolite , titanium dioxide (TiO 2 ) , , graphene oxide (GO) , , silver , silica , and metal‐organic frameworks (MOFs) , . Previous studies showed that the incorporation of nanoparticles generally help to boost up the water permeation flux, mainly attributed to alteration of membrane surface hydrophilicity , .…”

Section: Introductionsupporting

confidence: 88%

“…The nanoparticles that have been previously used for TFN membrane synthesis include zeolite , titanium dioxide (TiO 2 ) , , graphene oxide (GO) , , silver , silica , and metal‐organic frameworks (MOFs) , . Previous studies showed that the incorporation of nanoparticles generally help to boost up the water permeation flux, mainly attributed to alteration of membrane surface hydrophilicity , . Other positive features of adding nanomaterials into the matrix of composite membranes involve increased solute rejection rates , better antibacterial properties , and stronger resistance against organic/inorganic fouling .…”

Section: Introductionmentioning

confidence: 99%

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Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

et al. 2017

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For the first time, thin-film nanocomposite (TFN) nanofiltration membranes incorporated with graphene oxide (GO) were synthesized and used to separate phosphorus from water sources of varying properties. Prior to phosphorus removal tests, two different TFN membranes and one control thin-film composite (TFC) membrane were subject to standard characterization in order to determine pure water flux, salt rejection, surface hydrophilicity, pore size, and porosity. By incorporation of GO, the water flux of composite membranes could be significantly improved with minimum decrease in salt rejection, mainly due to improved surface hydrophilicity coupled with enlarged pore size and overall structural porosity. Especially the TFN-1 membrane was found to perform better owing to its good combination of water flux and solute rejection, higher water flux, and comparable phosphorus rejection in comparison to the TFC membrane.

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Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

et al. 2017

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“…Moreover, TiO 2 is inexpensive, commercially available, nontoxic, and chemically stable . For self‐assembly of TiO 2 nanoparticles to the surface of polymer containing COOH and the COOH groups, such as aromatic polyamide thin film layer, two different schemes can be applied, namely linkage of TiO 2 with oxygen atoms via coordination to Ti 4+ cations [Figure (a)] and the formation of a hydrogen bond between COOH groups and the hydroxyl group of TiO 2 [Figure (b)] …”

Section: Introductionmentioning

confidence: 99%

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Asadollahi

Bastani

Mousavi

et al. 2019

J of Applied Polymer Sci

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The purpose of this research is to explain the surface modification of fabricated polyamide reverse osmosis (RO) membranes using UV-initiated graft polymerization at different irradiation times (15, 30, 60, and 90 s) and various acrylamide concentrations (10, 20, and 30 g L −1 ). Also, coating of membranes surface with various concentrations of TiO 2 nanoparticles (10, 20, 30, and 50 ppm) followed by the same UV irradiation times was investigated. After that, the membranes modification was done by grafting of acrylamide blended with TiO 2 nanoparticles via UV irradiation. The characterization of membranes surface properties and their performance were systematically carried out. The results demonstrated the enhanced hydrophilicity of modified membranes and confirmed the presence of acrylamide and nanoparticles on the membranes surface. Acrylamide-grafted membranes could reach to higher water flux than pristine membrane with little reduction in salt rejection. Moreover, TiO 2 -coated membranes indicated enhancement of water flux continuously with increase in nanoparticles concentration and irradiation time and rejection of membranes was slightly decreased at low irradiation times. Also, RO membranes modified simultaneously with acrylamide and TiO 2 nanoparticles under UV irradiation exhibited improved water flux up to 18%, slightly higher rejection, and considerable better fouling resistance compared with pristine one.

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“…In this method, the nanofiltration system itself was used to perform the impregnation process. The self-assembly method was used for membrane modification; the methodology was adapted from Ngo et al (2016) and Shao et al (2017). In summary, a solution of 0.5% (w/v) of TiO2 nanoparticles was prepared in ultrapure water dispersion (Milli-Q® system, Millipore) under magnetic stirring for 1 hour followed by sonication for 1 hour at 37 KHz frequency (Model Elmasonic P30H, Elma Schmidbauer Gmbh).…”

Section: Membrane Modificationmentioning

confidence: 99%

“…Water permeability was determined after the steady flow was reached (when the flow value remained constant for 30 minutes) at different applied pressures (6, 8, 10, 12 and 14 bar). Initially, the membrane was compacted with ultrapure water at each pressure studied for 15 min (Ngo et al, 2016). The water flow was determined by Equation 2:…”

Section: Permeability Experimentsmentioning

confidence: 99%

Self-assembly modification of polyamide membrane by coating titanium dioxide nanoparticles for water treatment applications

Coldebella¹,

Camacho²,

Rezende³

et al. 2019

Rev. ambiente água

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This study modified the surface of a commercial polyamide membrane with the deposition of TiO2 nanoparticles by the self-assembly method under pressure with high permeability and photocatalytic activity. Changes in membrane characteristics and its performance for photocatalytic properties were evaluated. The results indicated that both membrane hydrophilicity and photocatalytic performance were significantly improved by the presence of TiO2 nanoparticles applied under a pressure of 1 bar. The deposition of the TiO2 particles under pressure was able to maintain the particles on the surface of the membranes and their photocatalytic capacity for three cycles of use. The prepared TiO2 photocatalytic membrane presented a great potential for wastewater treatment and for reuse wastewater systems due its ability to remove methylene blue (MB) dye solution by photocatalytic decomposition and physical separation.

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Surface modification of polyamide thin film composite membrane by coating of titanium dioxide nanoparticles

Cited by 41 publications

References 21 publications

Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination

Self-assembly modification of polyamide membrane by coating titanium dioxide nanoparticles for water treatment applications

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Surface modification of polyamide thin film composite membrane by coating of titanium dioxide nanoparticles

Cited by 41 publications

References 21 publications

Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

Thin‐Film Nanocomposite Nanofiltration Membranes Incorporated with Graphene Oxide for Phosphorus Removal

Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO2 nanoparticles under UV irradiation for water desalination

Self-assembly modification of polyamide membrane by coating titanium dioxide nanoparticles for water treatment applications

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Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO₂ nanoparticles under UV irradiation for water desalination