Bio-inspired GO-Ag/PVDF/F127 membrane with improved anti-fouling for natural organic matter (NOM) resistance

Wu, Qiong; Chen, Gui‐E; Sun, Wenping; Xu, Zheng; Kong, Yong; Zheng, Xiaopeng; Xu, Sun‐Jie

doi:10.1016/j.cej.2016.12.079

Cited by 51 publications

(14 citation statements)

References 39 publications

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“…This observation meant that the Ag nanoparticles-containing membrane possesses the properties required to mitigate the formation of biofilms and possible fouling. Other works in the literature have reported similar results [ 17 , 27 , 29 ].…”

Section: Resultssupporting

confidence: 80%

“…The Pd (002) at 2Ɵ = 45.5° has also been previously reported as a combinatorial phase between Fe and Pd in the synthesis of bimetallic nanoparticles of such elemental compositions. These Fe/Pd peaks lacked long-range order and suffered broadening due to the amorphous nature of PMAA-PES and the nanoparticles [ 12 , 14 , 15 , 16 , 17 ]. These peaks also appear in Pd@FeAg@HPEI/PMAA-PES, with enhanced crystallinity, and thus minor shifts.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, XPS confirmed the metal-carboxylic functionality bonding, which further aids stabilization within intermolecular make-up of the casting solutions. For these reasons, the preparation method as presented in this work is critical towards highly reactive nanocomposite membranes in the degradation of POPs in comparison to existing methods [ 5 , 17 ].…”

Section: Resultsmentioning

confidence: 99%

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The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

et al. 2020

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The impact of worldwide water scarcity, further exacerbated by environmental pollution, necessitates the development of effective water treatment membranes. Herein, we report the synthesis and characterization of nanocomposite membranes containing hyperbranched polyethyleneimine (HPEI) stabilized bi-and trimetallic nanoparticles. These membranes were prepared by blending a pre-grafted Polyethersulfone (PES) powder with the Pd@Fe@HPEI and Pd@FeAg@HPEI nanoparticles followed by phase inversion. The membranes, together with stabilized nanoparticles, were characterized by several analytical techniques, such as attenuated total reflectance–Fourier transform infra-red spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), optical contact angle (OCA), scanning electron microscopy (SEM), atomic force microscopy (AFM), and high-resolution transmission electron microscopy (HRTEM). These techniques revealed the elemental composition, zerovalent nature of the nanoparticles, and their small and even size distribution. Surface analysis showed chemical bonding between the polymeric functional groups and the supported nanoparticles. Furthermore, the nanocomposite membranes were found to be hydrophilic. Additionally, the membranes were investigated for swelling (water uptake), porosity, pore size, pure water permeation fluxes, and they indicated a decreased protein adhesion property. As such, the membranes fabricated in this work indicate the required properties for application in water treatment.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

et al. 2020

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“…all suffer from poor selectivities and low efficiencies . In recent years, membrane treatment technology has been widely applied in water treatment because of its simplicity and high efficiency . However, for membrane technology, membrane fouling is the biggest obstacle and the membrane surface is easily fouled by oil or dye in the wastewater, which shortens membrane life.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11] In recent years, membrane treatment technology has been widely applied in water treatment because of its simplicity and high efficiency. [12][13][14] However, for membrane technology, membrane fouling is the biggest obstacle and the membrane surface is easily fouled by oil or dye in the wastewater, [15][16][17] which shortens membrane life. Therefore, in order to solve the problem, it is necessary to develop a novel functional membrane material for wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

A novel photocatalytic membrane decorated with RGO‐Ag‐TiO₂ for dye degradation and oil–water emulsion separation

Chen

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Membrane separation is a promising process for treatment of dye and oily wastewater if the antifouling capacity and recyclability can be improved. In recent years, the development of photocatalytic materials has provided new methods for research into membrane technology. RESULTS In this study, a novel photocatalytic membrane decorated with RGO‐Ag‐TiO2 nanomaterial was fabricated by simple vacuum filtration for degradation of dye and separation of oil–water. First, TiO2 nanowires were prepared for more effective photocatalysis, reduced graphene oxide (RGO)‐Ag‐TiO2 was fabricated by a facile hydrothermal reaction, then it was directly decorated on cellulose acetate (CA) membrane using polyethylene glycol and glutaraldehyde. CONCLUSION The as‐prepared photocatalytic membrane can simultaneously degrade dye and separate oil–water emulsions under visible‐light irradiation in a short time. The membrane has extremely high water flux (191 L m‐2 h‐1) and rejection rates (almost 100%) of dye–oil–water emulsion. More importantly, the photocatalytic membrane shows excellent antifouling capacity and recyclability, and retains relatively stable dye–oil–water permeation flux (about 27.5 L m‐2 h‐1) and high rejection rates (up to 99%) after six cycles of experiments under visible‐light irradiation. Overall, the photocatalytic membrane opens up new avenues for the treatment of wastewater. © 2017 Society of Chemical Industry

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In situ synthesized amphiphilic polysulfone‐poly(ethylene‐glycol) block copolymer/silver nanocomposite for separating oil/water emulsion

Elgawady

Ponnamma

Hassan

et al. 2021

J of Applied Polymer Sci

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This work reports the synthesis of silver nanoparticles from the precursors, silver nitrate and sodium bromide, and the in situ synthesis of polysulfone (PSf)‐poly(ethylene‐glycol) (PEG) block copolymer (BCP) in the presence of developed Ag. The PSf‐PEG BCP nanocomposite containing 3 wt.% of the nanoparticles, when electrospun, is observed to be helpful in separating the oil‐in‐water emulsion. Mechanical properties such as dynamic mechanical strength and tensile strength measurements and high thermal degradation temperature (~6°C) illustrate the reinforcing effect of the Ag nanoparticles. The presence of Ag influences the glass transition temperature (Tg) of the BCP and its elasticity due to its well distribution in the BCP during the in situ synthesis of nanocomposite. Electrospun fiber mat of the in situ synthesized PSf‐PEG/Ag nanocomposite shows improved wettability as evident from the respective aqueous contact angle values of 80.66° ± 1.3, 85.70° ± 2.0, and 101.50° ± 1.0 for PSf‐PEG/Ag, PSf‐PEG, and neat PSf. The combination of PEG to PSf has increased the overall polymer reinforcement effect, and this property along with the antimicrobial activity (inhibited growth of Staphylococcus aureus) of Ag nanoparticles are applied in developing bio‐fouling resistant BCP nanocomposite fibers for oil/water emulsion separation.

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Bio-inspired GO-Ag/PVDF/F127 membrane with improved anti-fouling for natural organic matter (NOM) resistance

Cited by 51 publications

References 39 publications

The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

A novel photocatalytic membrane decorated with RGO‐Ag‐TiO₂ for dye degradation and oil–water emulsion separation

In situ synthesized amphiphilic polysulfone‐poly(ethylene‐glycol) block copolymer/silver nanocomposite for separating oil/water emulsion

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Bio-inspired GO-Ag/PVDF/F127 membrane with improved anti-fouling for natural organic matter (NOM) resistance

Cited by 51 publications

References 39 publications

The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

A novel photocatalytic membrane decorated with RGO‐Ag‐TiO2 for dye degradation and oil–water emulsion separation

In situ synthesized amphiphilic polysulfone‐poly(ethylene‐glycol) block copolymer/silver nanocomposite for separating oil/water emulsion

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Product

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A novel photocatalytic membrane decorated with RGO‐Ag‐TiO₂ for dye degradation and oil–water emulsion separation