Progress and perspectives for synthesis of sustainable antifouling composite membranes containing in situ generated nanoparticles

Li, Xin; Sotto, Arcadio; Li, Jiansheng; Bruggen, Bart Van der

doi:10.1016/j.memsci.2016.11.040

Cited by 162 publications

(70 citation statements)

References 198 publications

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“…In order to prevent nanoparticle aggregation and allow for collection and regeneration, nanoparticle catalysts have been integrated into membrane domains for reaction and reuse. Various of methods, such as the sol-gel process [38, 39], ion-exchange method [40], and in situ reduction [41], were reported for in situ preparation of nanoparticle-based membrane systems [42]. In our previous work, we have already reported the in-situ synthesis of iron-based nanoparticles (including ZVI, iron bimetallic, and iron oxide nanoparticles, in poly (acrylic acid) (PAA)-polyvinylidene fluoride (PVDF) membranes), as well as their application in trichloroethylene and PCB treatment [33, 34].…”

Section: Introductionmentioning

confidence: 99%

Pore functionalized PVDF membranes with in-situ synthesized metal nanoparticles: Material characterization, and toxic organic degradation

Wan

Briot

Saad

et al. 2017

Journal of Membrane Science

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Functionalized PVDF membrane platforms were developed for environmentally benign in-situ nanostructured Fe/Pd synthesis and remediation of chlorinated organic compounds. To prevent leaching and aggregation, nanoparticle catalysts were integrated into membrane domains functionalized with poly (acrylic acid). Nanoparticles of 16–19 nm were observed inside the membrane pores by using focused ion beam (FIB). This technique prevents mechanical deformation of the membrane, compared to the normal SEM preparation methods, thus providing a clean, smooth surface for nanoparticles characterization. This allowed quantification of nanoparticle properties (size and distribution) versus depth underneath the membrane surface (0–20 µm). The results showed that nanoparticles were uniformly sized and evenly distributed inside the membrane pores. However, the size of nanoparticles inside the membrane pores was 13.9% smaller than those nanoparticles located on the membrane surface. Investigating nanoparticles inside membrane pores increases the accuracy of kinetic analysis and modeling aspects. Furthermore, the Fe/Pd immobilized membranes showed excellent performance in the degradation of chlorinated organics: Over 96% degradation of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) was achieved in less than 15 s residence time in convective flow mode. The regeneration and reuse of this catalytic membrane system were also studied. Particles were examined in XRD upon formation, after deliberate oxidation, and after regeneration. The regenerated sample showed the same crystalline pattern as the original sample. Repeated degradation experiments demonstrated successful PCB 126 dechlorination with nanoparticles regenerated for four cycles with only a small loss in reactivity. It demonstrated that Fe/Pd immobilized membranes have the potential for large-scale remediation applications.

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Section: Introductionmentioning

confidence: 99%

Pore functionalized PVDF membranes with in-situ synthesized metal nanoparticles: Material characterization, and toxic organic degradation

Wan

Briot

Saad

et al. 2017

Journal of Membrane Science

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“…The integration of nanoparticles and polymeric membranes could address some of these issues because of the large surface area, stability and the potential for versatile functionalities of membrane domains [37,38]. Among the integration methods (which include sol-gel process, particle deposition, in situ reduction, ion-exchange and in situ polymer reaction [39][40][41][42][43]), ion-exchange using carboxyl groups (-COOH) has been shown to effectively capture metal ions, which shows the potential to prevent the leaching of incorporated nanoparticles [44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Pd/Fe nanoparticle integrated PMAA-PVDF membranes for chloro-organic remediation from synthetic and site groundwater

Wan

Islam

Briot

et al. 2020

Journal of Membrane Science

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The poly(methacrylic acid) (PMAA) was synthesized in the pores of commercial microfiltration PVDF membranes to allow incorporation of catalytic palladium/iron (Pd/Fe) nanoparticles for groundwater remediation. Particles of 17.1 ± 4.9 nm size were observed throughout the pores of membranes using a focused ion beam. To understand the role of Pd fractions and particle compositions, 2-chlorobiphenyl was used as a model compound in solution phase studies. Results show H 2 production (Fe 0 corrosion in water) is a function of Pd coverage on the Fe. Insufficient H 2 production caused by higher coverage (> 10.4% for 5.5 wt%) hindered dechlorination rate. With 0.5 wt% Pd, palladized-Fe reaction rate (surface area normalized reaction rate, k sa = 0.12 L/(m 2-h) was considerably higher than isolated Pd and Fe particles. For groundwater, in a single pass of Pd/Fe-PMAA-PVDF membranes (0.5 wt% Pd), chlorinated organics, such as trichloroethylene (177 ppb) and carbon tetrachloride (35 ppb), were degraded to 16 and 0.3 ppb, respectively, at 2.2 seconds of residence time. The degradation rate (observed k sa) followed the order of carbon tetrachloride > trichloroethylene > tetrachloroethylene > chloroform. A 36 h continuous flow study with organic mixture and the regeneration process show the potential for on-site remediation.

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“…On the other hand, Park et al (2016) [ 20 ] verified the strong antibacterial activity against E. coli , Pseudomonas aeruginosa , and Staphylococcus aureus , even though the membrane was expected to last no longer than 97 days, while the estimation of Liu et al (2015) [ 23 ] was of 340 days. Thus, nanoparticles leaching still poses a challenge to overcome, which suggests the development of new techniques to solve this problem [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Biocidal Effect of Microfiltration Membranes Impregnated with Silver Nanoparticles by Sputtering Technique

2020

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Silver nanoparticles were loaded in microfiltration membranes by sputtering technique for the development of biocidal properties and biofouling resistance. This technology allows good adhesion between silver nanoparticles and the membranes, and fast deposition rate. The microfiltration membranes (15 wt.% polyethersulfone and 7.5 wt.% polyvinylpyrrolidone in N,N-dimethylacetamide) were prepared by phase inversion method, and silver nanoparticles were deposited on their surface by the physical technique of vapor deposition in a sputtering chamber. The membranes were characterized by Field Emission Scanning Electron Microscopy, and the presence of silver was investigated by Energy-Dispersive Spectroscopy and X-ray Diffraction. Experiments of silver leaching were carried out through immersion and filtration tests. After 10 months of immersion in water, the membranes still presented ~90% of the initial silver, which confirms the efficiency of the sputtering technique. Moreover, convective experiments indicated that 98.8% of silver remained in the membrane after 24 h of operation. Biocidal analyses (disc diffusion method and biofouling resistance) were performed against Pseudomonas aeruginosa and confirmed the antibacterial activity of these membranes with 0.6 and 0.7 log reduction of viable planktonic and sessile cells, respectively. These results indicate the great potential of these new membranes to reduce biofouling effects.

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Progress and perspectives for synthesis of sustainable antifouling composite membranes containing in situ generated nanoparticles

Cited by 162 publications

References 198 publications

Pore functionalized PVDF membranes with in-situ synthesized metal nanoparticles: Material characterization, and toxic organic degradation

Pore functionalized PVDF membranes with in-situ synthesized metal nanoparticles: Material characterization, and toxic organic degradation

Pd/Fe nanoparticle integrated PMAA-PVDF membranes for chloro-organic remediation from synthetic and site groundwater

Investigation of Biocidal Effect of Microfiltration Membranes Impregnated with Silver Nanoparticles by Sputtering Technique

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