Construction of a Covalent Crosslinked Membrane Exhibiting Superhydrophilicity and Underwater Superoleophobicity for the Efficient Separation of High-Viscosity Oil–Water Emulsion Under Gravity DOI Creative Commons
Mengxi Zhou, Pei‐Qing Yuan,

Xinru Xu

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1840 - 1840

Published: April 19, 2025

The separation of high-viscosity oil–water emulsions remains a global challenge due to ultra-stable interfaces and severe membrane fouling. In this paper, SiO2 micro–nanoparticles coated with polyethyleneimine (PEI) were initially loaded onto stainless steel substrate. This dual-functional design simultaneously modifies surface roughness wettability. Furthermore, covalent crosslinking network was created through the Schiff base reaction between PEI glutaraldehyde (GA) enhance stability membrane. exhibits extreme wettability, superhydrophilicity (WCA = 0°), underwater superoleophobicity (UWOCA 156.9°), enabling gravity-driven pump oil 99.9% efficiency flux 1006 L·m−2·h−1. Moreover, molecular dynamics (MD) simulations demonstrate that SiO2-PEI-GA-modified promotes formation stable hydration layer, reduces oil–layer interaction energy by 85.54%, superior oleophobicity compared unmodified SSM. Efficiency is maintained at 99.8% after 10 cycles. study provides scalable strategy combines hydrophilic particle modification, effectively addressing trade-off performance longevity in treatment viscous emulsions.

Language: Английский

The application of marine bioactive composite materials in environmental remediation DOI

Yanan Huang,

Hao Li,

Ronglian Xing

et al.

Desalination, Journal Year: 2025, Volume and Issue: unknown, P. 118629 - 118629

Published: Jan. 1, 2025

Language: Английский

Citations

0
A Superhydrophobic and Recyclable Coating with Strong Robustness for Anti‐Icing Applications DOI Open Access
Xiang Zhao, Peng Wang, Qilin Zhang

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Conventional superhydrophobic coatings frequently incorporate thermosetting resins as substrates, which are challenging to recycle. This study explores the application of ester‐exchange degradable 4,5‐Epoxyhexane‐1,2‐dicarboxylic glycidyl ester (DGEAC) combined with structurally engineered and perfluorooctyltriethoxysilane (POTS) modified carbon black@silica (CB@SiO 2 ‐POTS) particles fabricate recyclable (DGEAC/CB@SiO using a non‐solvent‐induced phase separation technique. The resulting display properties, contact angle reaching 162.2° ± 1°. surface exhibits three‐tier hierarchical micron/micron/nanostructure, imparting remarkable stability coating retains its superhydrophobicity after 4000 cm abrasion 800‐grit sandpaper under 5 kPa pressure. Furthermore, demonstrates excellent icing delay performance (600 s) minimal ice adhesion strength (25.7 kPa), along rapid photothermal de‐icing capability (120 s). polyester in is rapidly degraded within 24 h presence ethylene glycol, facilitates release hydrophobic particles. By filtering out (DGEAC), CB@SiO ‐POTS successfully recovered. coating, re‐prepared from collected raw materials, maintained over five recycling cycles. straightforward approach fabricating notable environmental compatibility offers promising reference for advancing recyclability coatings.

Language: Английский

Citations

0
Constructing Porous Polyacrylonitrile/Polyethylenimine Microspheres by Polymer Crystallization Vapor-Induced Phase Separation for Efficient Adsorption and Separation of Chromium Ion DOI
Zongrui Zhang, Weiwei Xu, Chi Zhang

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

The development of cost-effective wastewater treatment technologies is imperative for heavy metal pollution mitigation, which presents considerable risks to water supplies, ecosystems, and human health. In this context, polyacrylonitrile/polyethylenimine porous microspheres (PAN/PEI PM) were synthesized through a dual-phase strategy combining polymer crystallization vapor-induced phase separation, leading effective removal hexavalent chromium (Cr(VI)) from wastewater. PAN/PEI PM, characterized by substantial number amino groups relatively uniform particle size ranging 1.3 1.7 μm, demonstrated commendable thermal stability, high specific surface area (93.5 m2/g), pore volume 0.7 cm3/g. Furthermore, the PM exhibited significantly enhanced Cr(VI) adsorption efficiency, achieving levels up 194.5 mg/g. Even after five cycles, they consistently maintained efficiency exceeding 64%, with an capacity still reaching 125.6 isotherm kinetics found correlate well Langmuir pseudo-second-order models, respectively. Adsorption experiments that effectively remove primarily complexation electrostatic interactions, attributed elevated concentration ionizable functional (NH2) within microsphere structure. Additionally, redox processes are predominantly reliant on reduction adsorbed Cr(III). These findings underscore favorable characteristics reusability offering valuable insights more sustainable strategies

Language: Английский

Citations

0
Effective incorporation of surface functional groups through direct current glow discharge plasma treatment to increase the chelation of metal ions onto zein/chitosan composite films DOI

M. H. Vijay Dhanabal,

G. Shanmugavelayutham,

Paramasivam Premasudha

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 309, P. 143186 - 143186

Published: April 15, 2025

Language: Английский

Citations

0
Construction of a Covalent Crosslinked Membrane Exhibiting Superhydrophilicity and Underwater Superoleophobicity for the Efficient Separation of High-Viscosity Oil–Water Emulsion Under Gravity DOI Creative Commons
Mengxi Zhou, Pei‐Qing Yuan,

Xinru Xu

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1840 - 1840

Published: April 19, 2025

The separation of high-viscosity oil–water emulsions remains a global challenge due to ultra-stable interfaces and severe membrane fouling. In this paper, SiO2 micro–nanoparticles coated with polyethyleneimine (PEI) were initially loaded onto stainless steel substrate. This dual-functional design simultaneously modifies surface roughness wettability. Furthermore, covalent crosslinking network was created through the Schiff base reaction between PEI glutaraldehyde (GA) enhance stability membrane. exhibits extreme wettability, superhydrophilicity (WCA = 0°), underwater superoleophobicity (UWOCA 156.9°), enabling gravity-driven pump oil 99.9% efficiency flux 1006 L·m−2·h−1. Moreover, molecular dynamics (MD) simulations demonstrate that SiO2-PEI-GA-modified promotes formation stable hydration layer, reduces oil–layer interaction energy by 85.54%, superior oleophobicity compared unmodified SSM. Efficiency is maintained at 99.8% after 10 cycles. study provides scalable strategy combines hydrophilic particle modification, effectively addressing trade-off performance longevity in treatment viscous emulsions.

Language: Английский

Citations

0