In situ-generated yttrium-based nanoparticle/polyethersulfone composite adsorptive membranes: Development, characterization, and membrane formation mechanism

He, Jinsong; Cui, Anan; Fan, Ni; Deng, Shihuai; Shen, Fei; Song, Chun; Lou, Ling; Huang, Churui; Long, Lulu

doi:10.1016/j.jcis.2018.10.064

Cited by 17 publications

(25 citation statements)

References 47 publications

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“…The chemical composition of the nanocomposite membrane surface was investigated by XPS in our previous study. 23 The results indicated that Y 3+ in casting solution successfully reacted with OH À anions in coagulation bath to in situ form Y(CO 3 ) 0.5 (OH) 2 NPs throughout the membrane matrix during membrane formation process.…”

Section: Resultsmentioning

confidence: 93%

“…While for M10, the number of pores on membrane surface from M10-1 to M10-4 is very limited and close due to the viscosity hindrance in the demixing process reported in our previous study. 23 The morphologies of membrane cross-sections show that the thickness of different membranes is in the range of 84.5-144.2 mm. All the membranes display a typical asymmetric porous structure, which is composed of a dense top skin layer and a macro-voids sublayer.…”

Section: Resultsmentioning

confidence: 99%

“…The changes should be ascribed to the delayed demixing rate caused by viscosity hindrance during the phase inversion process, which was deeply discussed in our previous study. 23 3.1.4. Phase inversion kinetics.…”

Section: Resultsmentioning

confidence: 99%

“…The preparation of the nanocomposite adsorptive membranes followed the description in our previous study. 23 The compositions of casting solutions and coagulation bath are shown in Table 1.…”

Section: Preparation Of Y-based Nps/pes Composite Adsorptive Membranementioning

confidence: 99%

“…It has been proved that the composition of casting solution signicantly affected the structure and properties of the nanocomposite membranes. 23 In addition, our preliminary study had shown that the composition of salt coagulation bath (NaOH solution) could change the in situ generation phase inversion process, resulting in different structure and properties of nanocomposite adsorptive membranes. However, to the best of our knowledge, no research work on the effects of coagulation batch composition on the properties and adsorption ability of nanocomposite adsorptive membranes has been reported by now.…”

Section: Introductionmentioning

confidence: 99%

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Development of in situ synthesized Y-based nanoparticle/polyethersulfone adsorptive membranes by adjusting the composition of the coagulation bath for enhanced removal of fluoride

et al. 2019

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Y-based Nps/pes Composite Adsorptive Membranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of in situ synthesized Y-based nanoparticle/polyethersulfone adsorptive membranes by adjusting the composition of the coagulation bath for enhanced removal of fluoride

et al. 2019

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Beta cyclodextrin modified polyvinylidene fluoride adsorptive mixed matrix membranes for removal of Congo red

Ndlovu

Malatjie

Chabalala

et al. 2022

J of Applied Polymer Sci

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This work reports the adsorptive removal of congo red using as-fabricated polyvinylidene fluoride (PVDF) membranes modified with beta cyclodextrin (β-CD). Diverse techniques were used to characterize the membranes' performance and microstructural and morphological properties. The effect of pH, dye initial concentration, adsorbent dosage, contact time on adsorption efficiency were investigated. Filtration studies were carried out using a deadend cell. The results showed that the introduction of β-CD in membrane matrix improved membrane performance, adsorption, and filtration properties.Bulk porosity increased from 61.46% to 87.55% and contact angle decreased from 84.17 0 to 67.93 0 . Water flux at 1 bar improved from 12.42 to 269.08 L.m À2 . hr À1 . Maximum adsorption for congo red was obtained at pH 7, with PVDF/β-CD membranes removing 96.15% and pristine PVDF removing 54.27% of congo red. The adsorptive removal of congo red was best described by the pseudosecond order kinetics and best fitted the Freundlich isotherm model. According

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In‐situ generated ZnO nanoparticles for enhanced performance of thin film nanocomposite membrane in forward osmosis process

Hakimi,

Shakeri,

Salehi

2023

J of Applied Polymer Sci

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This work developed a novel approach to the in‐situ synthesis of ZnO nanoparticles to modify the polysulfone (PSf) porous membrane substrate. The zinc acetate was added to the casting solution, and ZnO nanoparticles were synthesized during phase inversion. The non‐solvent pH and zinc acetate concentration controlled the ZnO synthesis and loading. Their effect on the substrates properties in terms of morphology, hydrophilicity and porosity was studied thoroughly. The result shows that the ZnO nanoparticles was not formed in acidic pH, while ZnO nanoparticles with size of 20 nm could be easily formed in basic pH. The successful synthesis of ZnO nanoparticles was investigated using FTIR and EDX analysis. The EDX images verify that in‐situ synthesis led to a more uniform dispersion than conventional incorporation method. Then the effect of ZnO loading on the interfacial reaction and polyamide (PA) structure was investigated. SEM images verify the successful synthesis of a uniform and defect‐free PA thin film on ZnO modified substrates. FO performance results show an enhancement in water flux and salt rejection as a result of ZnO incorporation in thin film nanocomposite (TFN) membranes, where TFN 1 wt.% in‐situ membrane showed 40% higher water flux than the control TFC membrane. The porous and hydrophile substrate in TFN 1 wt.% in‐situ membrane is responsible for improved separation performance. These modified membranes displayed uniform dispersion of ZnO nanoparticles within substrates, confirming that this method could effectively restrain the aggregation of the nanoparticles.

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In situ-generated yttrium-based nanoparticle/polyethersulfone composite adsorptive membranes: Development, characterization, and membrane formation mechanism

Cited by 17 publications

References 47 publications

Development of in situ synthesized Y-based nanoparticle/polyethersulfone adsorptive membranes by adjusting the composition of the coagulation bath for enhanced removal of fluoride

Development of in situ synthesized Y-based nanoparticle/polyethersulfone adsorptive membranes by adjusting the composition of the coagulation bath for enhanced removal of fluoride

Beta cyclodextrin modified polyvinylidene fluoride adsorptive mixed matrix membranes for removal of Congo red

In‐situ generated ZnO nanoparticles for enhanced performance of thin film nanocomposite membrane in forward osmosis process

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