Removal of heavy metal ions using a new high performance nanofiltration membrane modified with curcumin boehmite nanoparticles

Modification is mostly used to adjust and increase the performance of polymers by employing organic or inorganic fillers in composites. It is significant to investigate the functions of different fillers in polymer matrix. In this work, we prepared a series of composites by using polyurethane/acrylic dispersions as polymer matrix and nanofillers (cellulose nanocrystals, carbon nanotubes and aluminum oxide nanoparticles) as modifiers to study their micro-structure and applied performance. It is found that the different nanofillers can be dispersed in PUA homogenously, which are inclusive physically. Different nanofillers have a noticeable influence on the T g for the acrylate copolymers and the T g of the interphase between the acrylate and polyurethane. The CNTs significantly increases the elongation to 127.29%, and gives the highest dielectric response. We imply that the CNTs may be the most significant fillers to increase the mechanical and electrical properties.

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“…The ratio of nanofillers to PUA dispersion is set as 0.5 wt% according to the previous works. [36][37][38]…”

Section: Resultsmentioning

confidence: 99%

“…The samples information is listed in Table 1 and the recipe of the WPU and PUA is depicted in Table S1 (supporting information). The ratio of nanofillers to PUA dispersion is set as 0.5 wt% according to the previous works 36–38 …”

Section: Resultsmentioning

confidence: 99%

Functional nano‐fillers in waterborne polyurethane/acrylic composites and the thermal, mechanical, and dielectrical properties

Zhou

Song

Wang

et al. 2021

J of Applied Polymer Sci

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Section: Introductionmentioning

confidence: 99%

“…Curcumin diketimine (CDT) is a hybrid organic compound with antioxidant properties at neutral and acidic conditions [ 17 , 20 ]. It is also used in membrane bioreactors for antibacterial purposes in wastewater treatment [ 20 , 21 ]. The surface modification of TFC membranes using hybrid materials such as CDT may exhibit better performance without further surface modification of the hybrid materials [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance

Lin¹,

Samannan

Tung

et al. 2021

Membranes

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In order to overcome the challenges of low permeate flux (Jp) and the accompanying reverse solute flux (JS) during the forward osmosis (FO) membrane separation process, we synthesized four hybrid materials of polyacid-based organic compounds and incorporated them into the selective polyamide (PA) layer to make novel thin-film nanocomposite (TFN) FO membranes. The Jp and JS of each membrane were evaluated and used along with membrane selectivity (Jp/JS) as indicators of membrane separation performance. The fabricated and modified membranes were also characterized for ridge and valley surface morphologies with increasing hydrophilicity and finger-shaped parallel channels in the PSf substrate. Moreover, two highly hydrophilic nanoparticles of graphene oxide (GO) and titanium oxide (TiO2) were introduced with the hybrid materials for PA modification, which can further enhance the Jp of the TFN membranes. The highest Jp of the TFN membranes achieved 12.1 L/m2-h using 0.1% curcumin-acetoguanamine @ cerium polyacid (CATCP) and 0.0175% GO. The characteristic peaks of the hybrid materials were detected on the membrane surface using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, evidencing successful incorporation of the hybrid materials during membrane modification. Here, we present the novel TFN membranes using hybrid materials for separation applications. The reactions for synthesizing the hybrid materials and for incorporating them with PA layer are proposed.

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“…6 The prolonged exposure becomes harmful to plants, animals, and humans, causing severe poisoning, diseases, and mutations. 1 This exposure increases the chance of suffering cancer, nausea, mental disorders, liver and kidney failures, 2 bone deformation, 11 lethargy, hypertension, and depression. 3 Considering the high stability of heavy metal ions in water sources, the allowable limits established by the World Health Organization (WHO) can be easily exceeded.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

et al. 2020

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Removal of heavy metal ions using a new high performance nanofiltration membrane modified with curcumin boehmite nanoparticles

Cited by 133 publications

References 58 publications

Functional nano‐fillers in waterborne polyurethane/acrylic composites and the thermal, mechanical, and dielectrical properties

Functional nano‐fillers in waterborne polyurethane/acrylic composites and the thermal, mechanical, and dielectrical properties

Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance

Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

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Removal of heavy metal ions using a new high performance nanofiltration membrane modified with curcumin boehmite nanoparticles

Cited by 133 publications

References 58 publications

Functional nano‐fillers in waterborne polyurethane/acrylic composites and the thermal, mechanical, and dielectrical properties

Functional nano‐fillers in waterborne polyurethane/acrylic composites and the thermal, mechanical, and dielectrical properties

Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance

Synthesis of FeO@SiO2–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions

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Synthesis of FeO@SiO₂–DNA core–shell engineered nanostructures for rapid adsorption of heavy metals in aqueous solutions