Synthesis of reusable and anti-fouling Co-Al-Ce LDHs coated stainless steel mesh for ultrafast oil/water separation and photocatalytic degradation

Wang, Linxi; Zhang, Yang; Liao, Yutong; Luo, Jianhong

doi:10.1016/j.clay.2022.106769

Cited by 10 publications

(2 citation statements)

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“…20 Based on the adjustable semiconductor properties of LDH, Wang and coworkers prepared the bifunctional CoAlCe-LDHs coated stainless steel mesh, which exhibited the ultrafast oil/water separation and photocatalytic degradation of the organic pollutant [degradation rate (RD) of MO: 94.2%]. 21 In order to expand the application of LDH in membrane separation technique, Wu and co-workers fabricated the superhydrophobic composite membrane through the growth of Ni−Al LDH onto cellulose membrane and hydrophobicity modification. 22 Although advanced progress has been made in LDHs-based membranes, current research mainly focuses on superhydrophobic membrane materials and oil fouling easily happens during oil−water separation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Zhang and co-workers fabricated the superhydrophobic stainless steel mesh by coating Ni–Al LDHs, which exhibited the efficient oil/water separation performance . Based on the adjustable semiconductor properties of LDH, Wang and co-workers prepared the bifunctional CoAlCe-LDHs coated stainless steel mesh, which exhibited the ultrafast oil/water separation and photocatalytic degradation of the organic pollutant [degradation rate (RD) of MO: 94.2%] . In order to expand the application of LDH in membrane separation technique, Wu and co-workers fabricated the superhydrophobic composite membrane through the growth of Ni–Al LDH onto cellulose membrane and hydrophobicity modification .…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic PAN Nanofibrous Membrane through Anchoring a Nanoflower-Branched CoAl-LDH@PANI Heterojunction for Organic Hazards Degradation and Oil-Containing Emulsified Wastewater Separation

Zhu,

Zhan,

Chen

et al. 2024

Langmuir

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The synergistic treatment of oily wastewater containing organic hazards and emulsified oils remains a big challenge for membrane separation technology. Herein, the photocatalytic membrane, which combined the physical barrier and catalytic oxidation-driven degradation functionality, was fabricated via anchoring a nanoflower-branched CoAl-LDH@ PANI Z-scheme heterojunction onto a porous polyacrylonitrile mat and using tannic acid as an adhesive. The assembly of such a Z-scheme heterojunction offered the superior photocatalytic degradation performance of soluble dyes and tetracycline (up to 94.3%) to the membrane with the improved photocatalytic activity of 2.33 times compared with the CoAl-LDH@pPAN membrane. Quenching experiments suggested that the • O 2 − was the most reactive oxygen species in the catalytic reaction system of the composite membrane. The greatly enhanced photocatalytic activity was attributed to the effective inhibition of photogenerated hole− electron combination using PANI as a carrier, with charge transferring from LDH to PANI. The possible photocatalytic degradation mechanism was proposed based on VB-XPS, electron spin resonance spectroscopy, and DRS technologies, which was confirmed by density functional theory calculation. Meanwhile, benefiting from the superhydrophilic/oleophobic feature and low oil adhesion, the membrane exhibited high permeability for isooctane emulsion (3990.39 L•m −2 •h −1 ), high structure stability, and satisfactory cycling performance. This work provided a strategy to develop superwetting and photocatalytic composite membranes for treating complex multicomponent pollutants in the chemical industry.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%