Polyvinylidene fluoride ultrafiltration membrane blended with nano-ZnO particle for photo-catalysis self-cleaning

Hong, Ji-Hyung; He, Yang

doi:10.1016/j.desal.2013.10.026

Cited by 204 publications

(74 citation statements)

References 33 publications

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“…Zinc oxide (ZnO) has been reported as one of the alternatives to TiO 2 for a significant enhancement in membrane filtration performance with lower cost [5]. Various studies have described the influence and contribution of ZnO NPs towards improving membrane applications such as antifouling behaviour [6,7], biofouling mitigation [8], industrial dye wastewater treatment [9], photocatalysis [10] and so forth.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of minimal-size ZnO nanoparticles through sol–gel method: Taguchi design optimisation

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Synthesis of minimal-size ZnO nanoparticles through sol–gel method: Taguchi design optimisation

et al. 2015

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“…To investigate the structural characteristics or crystallinity of polymer or nano-composite membrane, X-RD is the best tool as it is a non-destructive technique. IR spectroscopy is basically employed in order to get information about composition of membranes or presence of different functional groups on membrane surface [213,214]. FT-IR technique is used to determine the cross linking on the surface and to study the chemical structure of the membrane.…”

Section: Ft-ir; Xrdmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

188

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During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

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“…Similar to other metal oxides in nanoparticle form (such as TiO 2 ), nano-sized ZnO show excellent antibacterial, antifungal and anticorrosion features, including promising catalytic activity, high surface area, photosensitivity, chemical stability, hydrophilicity, and low cost compared to TiO 2 and Al 2 O 3 . For these reasons, ZnO nanoparticles have been used by other researchers as additive in blending modification of polymer membranes for improving hydrophilic and antifouling properties [24,25]. As transition metal chalcogenide (such as MoS 2 ), nano-sized WS 2 is insoluble in common solvents and practically inert and has some interesting electronic and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

García-Ivars

Iborra–Clar

Alcaina–Miranda

et al. 2015

Journal of Membrane Science

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ElsevierGarcía Ivars, J.; Iborra Clar, MI.; Alcaina Miranda, MI.; Van Der Bruggen, B. (2015). Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes. ABSTRACTInorganic nanoparticles have been applied as additive in membrane synthesis for improving different properties from the base polymer such as hydrophilicity, fouling resistance or permselectivity. To investigate the changes caused by the presence of the inorganic nanoparticles in the formation of the membrane structure, two different metallic compounds with opposite hydrophilicity were used as additives: hydrophilic zinc oxide (ZnO) and hydrophobic tungsten disulphide (WS 2 ). For this purpose, the effect of these metal nanoparticles at ultra-low concentrations (0.05 and 0.25 wt% metal nanoparticles/polymer ratio) in the preparation of flat-sheet membranes based on polyethersulphone (PES) by immersion-precipitation method was investigated. Nmethyl-2-pyrrolidone (NMP) was used as solvent. The influence of both metal nanoparticles on the characteristics and permselective properties of PES membranes was studied with microscopic observations, contact angle measurements, and filtration experiments. Although the incorporation of metal nanoparticles could turn the system into thermodynamically unstable, the demixing process during formation of membranes was slightly delayed, suppressing the macrovoid formation (remarkably using WS 2 ).Regardless the nature of the metal nanoparticles, results showed an overall improvement in membrane hydrophilicity and permselectivity by adding metal nanoparticles compared to the control PES membrane, demonstrating that the behaviour of both metal nanoparticles at ultra-low concentrations was very similar.

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Polyvinylidene fluoride ultrafiltration membrane blended with nano-ZnO particle for photo-catalysis self-cleaning

Cited by 204 publications

References 33 publications

Synthesis of minimal-size ZnO nanoparticles through sol–gel method: Taguchi design optimisation

Synthesis of minimal-size ZnO nanoparticles through sol–gel method: Taguchi design optimisation

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

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