Synthesis and characterization of a carbon nanotube/polymer nanocomposite membrane for water treatment

Shawky, Hosam; Chae, So-Ryong; Lin, Shihong; Wiesner, Mark R.

doi:10.1016/j.desal.2010.12.051

Cited by 233 publications

(102 citation statements)

References 26 publications

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“…Presently, nanocomposite polyamide membranes comprising nanomaterials such as metal oxide nanoparticles including silver, titanium, zinc, zeolite and carbon nanotube (CNT) have been established to improve the performances and properties of these membranes (Cong et al 2007;Shawky et al 2011;Lee et al 2007Lee et al , 2008Lind et al 2009;Kim et al 2012). Among nanomaterials, carbon nanotube (CNT) that was first identified by Iijima Sumio in 1991 displays outstanding electrical, optical and mechanical properties and has been utilized in wide areas of engineering and chemistry fields.…”

Section: Introductionmentioning

confidence: 99%

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

et al. 2017

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Polyamide thin-film composite (TFC) was fabricated on polysulfone (PS-20) base by interfacial polymerization of aqueous m-phenylenediamine (MPD) solution and 1,3,5-benzenetricarbonyl trichloride (TMC) in hexane organic solution. Multi-wall carbon nanotubes (MWCNT) were carboxylated by heating MWCNT powder in a mixture of HNO 3 and H 2 SO 4 (1:3 v/v) at 70°C under constant sonication for different periods. Polyamide nanocomposites were prepared by incorporating MWCNT and the carboxylated MWCNT (MWCNT-COOH) at different concentrations (0.001-0.009 wt%). The developed composites were analyzed by Fourier transform infrared spectroscopy-attenuated total reflection, scanning electron microscopy, transmission electron microscopy, contact angle measurement, determination of salt rejection and water permeate flux capabilities. The surface morphological studies displayed that the amalgamation of MWCNT considerably changed the surface properties of modified membranes. The surface hydrophilicity was increased as observed in the enhancement in water flux and pure water permeance, due to the presence of hydrophilic nanotubes. Salt rejection was obtained between 94 and 99% and varied water flux values for TFC-reference membrane, pristine-MWCNT in MPD, pristine-MWCNT in TMC and MWCNT-COOH in MPD were 20.5, 38, 40 and 43 L/m 2 h. The water flux and salt rejection performances revealed that the MWCNT-COOH membrane was superior membrane as compared to the other prepared membranes.

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Section: Introductionmentioning

confidence: 99%

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

et al. 2017

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“…Shawky et al [170] studied MWCNT/aromatic polyamide (PA) nanocomposite membranes to reject NaCl and humic acid. They concluded that rejections increased significantly; however, fluxes go down, which is a general trend for all nanoparticle-enhanced membranes [21].…”

Section: Water Treatmentmentioning

confidence: 99%

The Separation Power of Nanotubes in Membranes: A Review

Bruggen

2012

ISRN Nanotechnology

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Research on mixed matrix membranes in which nanoparticles are used to enhance the membrane's performance in terms of flux, separation, and fouling resistance has boomed in the last years. This review probes on the specific features and benefits of one specific type of nanoparticles with a well-defined cylindrical structure, known as nanotubes. Nanotube structures for potential use in membranes are reviewed. These comprise mainly single-wall carbon nanotubes (SWCNTs) and multiwall carbon nanotubes (MWCNTs), but also other structures and materials, which are less studied for membrane applications, can be used. Important issues related to polymer-nanotube interactions such as dispersion and alignment are outlined, and a categorization is made of the resultant membranes. Applications are reviewed in four different areas, that is, gas separation, water filtration, drug delivery, and fuel cells.

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“…60 It has been widely reported that the permeability, antifouling capacity and mechanical strength of a membrane will signicantly increase upon incorporation of CNTs. [61][62][63] Although their high cost limits the large scale industrialization of CNTs, it is expected that this cost will decrease as the technology matures. CNTs represent promising building blocks in a number of industrial applications in the future.…”

Section: Low-dimensional Carbon-based Nanomaterialsmentioning

confidence: 99%

A review on organic–inorganic hybrid nanocomposite membranes: a versatile tool to overcome the barriers of forward osmosis

et al. 2018

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Forward osmosis (FO) processes have recently attracted increasing attention and show great potential as a low-energy separation technology for water regeneration and seawater desalination. However, a number of challenges, such as internal concentration polarization, membrane fouling, and the tradeoff effect, limit the scaleup and industrial practicality of FO. Hence, a versatile method is needed to address these problems and fabricate ideal FO membranes. Among the many methods, incorporating polymeric FO membranes with inorganic nanomaterials is widely used and effective and is reviewed in this paper. The properties of FO membranes can be improved and meet the demands of various applications with the incorporation of nanomaterials. This review presents the actualities and advantages of organic-inorganic hybrid nanocomposite FO membranes. Nanomaterials applied in the FO field, such as carbon nanotubes, graphene oxide, halloysite nanotubes, silica and Ag nanoparticles, are classified and compared in this review. The effects of modification methods on the performance of nanocomposite FO membranes, including blending, in situ interfacial polymerization, surface grafting and layer-by-layer assembly, are also reviewed. The outlook section discusses the prospects of organicinorganic hybrid nanocomposite FO membranes and advanced nanotechnologies available for FO processes. This discussion may provide new opportunities for developing novel FO membranes with high performance.

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Synthesis and characterization of a carbon nanotube/polymer nanocomposite membrane for water treatment

Cited by 233 publications

References 26 publications

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

Modification of thin-film polyamide membrane with multi-walled carbon nanotubes by interfacial polymerization

The Separation Power of Nanotubes in Membranes: A Review

A review on organic–inorganic hybrid nanocomposite membranes: a versatile tool to overcome the barriers of forward osmosis

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