Fabrication and characterization of polyamide thin film nanocomposite (TFN) nanofiltration membrane impregnated with TiO2 nanoparticles

Rajaeian, Babak; Rahimpour, Ahmad; Tade, Moses O.; Liu, Shaomin

doi:10.1016/j.desal.2012.12.012

Cited by 238 publications

(98 citation statements)

References 43 publications

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“…Owing to the improved surface properties, modified TNTs take a longer time to settle. Similar surface modification was conducted by Namvar-Mahboub et al [20] and Rajaeian et al [21] on UZM-5 zeolite and TiO2 nanoparticles, respectively, but both research groups did not demonstrate the dipersion quality of amino-functionalized nanomaterials in the organic solvent. Figure 3 shows the FESEM image, contact angle and EDX mapping on the PA surface of three different types of composite membranes.…”

Section: Ftirmentioning

confidence: 70%

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

et al. 2016

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Thin film nanocomposite (TFN) membranes containing 0.05 or 0.10 w/v% functionalized titanate nanotubes (TNTs) in polyamide selective layer were prepared via interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC) monomers. Nanomaterials were dispersed into the monomer solution using two different approaches. In the first one, the functionalized TNTs were dispersed into the amine aqueous solution, while in the second approach the same nanomaterials were dispersed in TMC organic solution. The TFN membranes were characterized and compared with a control thin film composite (TFC) membrane to investigate the effect of nanofiller loadings and the fabrication approach on membrane properties. Results showed that introducing nanofillers into the organic phase was more effective to synthesize a TFN membrane of greater separation performance as the use of rubber roller to remove aqueous solution from the substrate surface could cause the loss of a significant amount of nanofillers, which further affected the polyamide layer integrity. It was also found that incorporation of high nanofiller loading tended to interfere with interfacial polymerization and weaken the bonds between monomers blocks, resulting in poor polyamide-nanotubes integrity. Compared to the TFC membrane, the TFN membrane made of 2% PIP and 0.15% TMC with 0.5% nanofiller incorporation could achieve greater water flux (7.5 vs 5.4 L/m 2 .h.bar) and Na2SO4 rejection (96.4% vs 86%) while exhibiting higher resistance against the fouling by protein and dye.

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Section: Ftirmentioning

confidence: 70%

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

et al. 2016

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“…Extensive researches, such as the introduction of new monomers [9][10][11], surfactant [12] and nanoparticles [13] during interfacial polymerization process, have been focused on optimizing the ultra-thin active layer in an attempt to improve the performance of the PA TFC membranes. Saha et al [10] prepared NF membranes with different PA layer structure by interfacial polymerization of diamines like piperazine (PIP) and m-phenylenediamine (MPD) alone or in combination, and acid chlorides like trimesoyal chloride (TMC) and isophthaloyal chloride alone or in combination.…”

Section: Introductionmentioning

confidence: 99%

Improved performance of polyamide thin-film composite nanofiltration membrane by using polyetersulfone/polyaniline membrane as the substrate

Zhu

Zhao

Wang

et al. 2015

Journal of Membrane Science

123

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“…However, the precipitation of amorphous aluminium hydroxide Al(OH) 3 is active and unstable. Therefore, they would further dehydrate and transform into c-AlOOH through equation (2). Before the hydrothermal reaction, fewer number of hydroxyl groups were on the membrane surface.…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal synthesis of boehmite on alumina membranes for superhydrophobic surfaces

Wang

2016

Surface Engineering

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Boehmite (c-AlOOH) coatings with nanoflakes and flower-like structures have been successfully synthesised on alumina membrane surfaces by hydrothermal reaction. The effects of hydrothermal reaction time and temperature on the morphologies of the layers were investigated. During the hydrothermal reaction, c-AlOOH nanoflakes grew randomly on the Al 2 O 3 particles, which changed the surface morphology of the alumina membrane and promoted its roughness. X-ray powder diffraction and field emission scanning electron microscope were used to characterise the structure and morphology of the membranes. Contact angle measurements were used to analyse the wetting property of the alumina membrane surface. Alumina membranes coated with boehmite layers possessed the wetting property from superhydrophilic to superhydrophobic after chemical vapour deposition of 1H,1H,2H,2H-perfluorooctyltriethoxysilane.

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Fabrication and characterization of polyamide thin film nanocomposite (TFN) nanofiltration membrane impregnated with TiO2 nanoparticles

Cited by 238 publications

References 43 publications

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

A practical approach to synthesize polyamide thin film nanocomposite (TFN) membranes with improved separation properties for water/wastewater treatment

Improved performance of polyamide thin-film composite nanofiltration membrane by using polyetersulfone/polyaniline membrane as the substrate

Hydrothermal synthesis of boehmite on alumina membranes for superhydrophobic surfaces

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