Improved performance of poly(piperazine amide) composite nanofiltration membranes by adding aluminum hydroxide nanospheres

Li, Hongbin; Shi, Wenying; Zhang, Yufeng; Du, Qiyun; Qin, Xiaohong; Su, Yuheng

doi:10.1016/j.seppur.2016.04.024

Cited by 60 publications

(20 citation statements)

References 61 publications

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“…In comparison to PSf substrates, these bands were not distinguished. These features are similar to the thin film membrane fabricated by Li et al (2016, 2017) and Yahia Cherif et al (2018). All these characteristic bands show that the PA layer has been successfully formed on the surface of the PSf substrate.…”

Section: Resultssupporting

confidence: 85%

Development of Copper-Aluminum Layered Double Hydroxide in Thin Film Nanocomposite Nanofiltration Membrane for Water Purification Process

et al. 2019

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This study aims to fabricate a thin film composite (TFC) membrane, modified with copper-aluminium layered double hydroxide (LDH) nanofillers via interfacial polymerization technique for nanofiltration (NF) processes. It was found that Cu-Al LDH nanofillers possessed layered structured materials with typical hexagonal plate-like shape and positive surface charge. The study revealed that TFN membrane exhibits a relatively smooth surface and a less nodular structure compared to pristine TFC membrane. The contact angle of TFN progressively decreased from 54.1° to 37.25°, indicating enhancement in surface hydrophilicity. Moreover, the incorporation of LDH nanofillers resulted in a less negative membrane as compared to the pristine TFC membrane. The best NF performance was achieved by TFN2 membrane with 0.1° of Cu-Al LDH loading and a water flux of 7.01 Lm-2h-1.bar. The addition of Cu-Al LDH resulted in excellent single salt rejections of Na2SO4 (96.8%), MgCl2 (95.6%), MgSO4 (95.4%), and NaCl (60.8%). The improvement in anti-fouling properties of resultant TFN membranes can be observed from the increments of pure water flux recovery and normalized water flux by 14% and 25% respectively. The findings indicated that Cu-Al LDH is a promising material in tailoring membrane surface properties and fouling resistance. The modification of the LDH-filled TFN membrane shows another alternative to fabricating a high-performance composite membrane, especially for water softening and partial desalination process.

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Section: Resultssupporting

confidence: 85%

Development of Copper-Aluminum Layered Double Hydroxide in Thin Film Nanocomposite Nanofiltration Membrane for Water Purification Process

et al. 2019

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“…As seen from Fig. 8 (1) and (2), the absorption peak in the range of 1620 to 1718 cm À1 , attributed to the C]O bond in -COOH, 15 had been strengthen. However, there was not any change observed in the ATR-FTIR spectra of PEI-CC/PSF composite NF membrane before and aer the immersions in the aqueous solutions with different pH values for 30 days.…”

Section: Rejection Performances Of the Resultant Composite Nf Membranesmentioning

confidence: 87%

“…Therefore, the active layer of the PEI/PIP-CC/PSF composite NF membrane was composed of two different polymers. [15][16][17] 3.1.2. 3-D morphology and surface roughness of the resultant NF membrane.…”

Section: Resultsmentioning

confidence: 99%

“…26,27 The IEP values of these resultant positively charged composite NF membranes decreased with the increase of PIP mass ratio in the aqueous phase. 15 The IEP results suggested that the charge properties of the resultant NF membranes would not be changed aer replacing TMC with CC. The composite NF membranes prepared via the interfacial polymerization between PEI or PEI/PIP and CC are still positively charged, and the PEI/PIP-CC/PSF composite NF membrane showing higher rejections to divalent-valence and multi-valence positive ions.…”

Section: Resultsmentioning

confidence: 99%

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A pH-stable positively charged composite nanofiltration membrane with excellent rejection performance

Jiang

Miao

et al. 2019

RSC Adv.

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“…PIP and TMC are active monomers and a nodular surface morphology is characteristic for the polyamide layer formed by them. 33 Although there are 34 The larger size of MWCNTs also contributed to the membrane morphology. There appear to be MWCNTs on MPC, while there are none on MPCP, illustrating that MWCNTs-PAMAM were embedded into the polyamide layer of MPCP.…”

Section: Membrane Characterizationsmentioning

confidence: 99%

Three-channel capillary NF membrane with PAMAM-MWCNT-embedded inner polyamide skin layer for heavy metals removal

Zhang

Sun

2018

RSC Adv.

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Improved performance of poly(piperazine amide) composite nanofiltration membranes by adding aluminum hydroxide nanospheres

Cited by 60 publications

References 61 publications

Development of Copper-Aluminum Layered Double Hydroxide in Thin Film Nanocomposite Nanofiltration Membrane for Water Purification Process

Development of Copper-Aluminum Layered Double Hydroxide in Thin Film Nanocomposite Nanofiltration Membrane for Water Purification Process

A pH-stable positively charged composite nanofiltration membrane with excellent rejection performance

Three-channel capillary NF membrane with PAMAM-MWCNT-embedded inner polyamide skin layer for heavy metals removal

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