Scholarlink

<p>Oil spills and waste oil discharges generate vast quantities of oily wastewater, posing severe ecological and environmental challenges that also endanger human health, necessitating the development of advanced and efficient oil–water separation membranes. In this work, a novel sodium alginate fiber (SA) based superhydrophilic/underwater superoleophobic (SUS) membrane was developed for oil-in-water (o/w) separation through a facile method by blending SA nanofibers with UiO-66-NH<sub>2</sub>/MgAl-LDH cluster-assembled microspheres. The micron-scale spheres were embedded within SA nanofibers, resulting in the formation of a loosely stacked nanofiber structure that enhanced water permeability. The obtained composite membrane exhibited good o/w separation performance with a high separation efficiency of &gt; 99% and a flux rate of ~ 2661 L m<sup>−2</sup>&#xa0;h<sup>−1</sup>. Moreover, the underwater oil contact angle (OCA) of U-LDHn@SA composite membrane was around 140°, which indicated that U-LDHn@SA composite membrane has good underwater superoleophobicity. After 10 cycles, the oil–water separation efficiency exceeded 99%, and the water flux always exceeded 2021 L m<sup>−2</sup>&#xa0;h<sup>−1</sup>. The composite membrane also exhibited the potential to separate oil-in-water emulsion with the highest oil rejection of 94%. The membrane showed antifouling properties, recyclability, and stability in harsh conditions. This work provides a new idea for the development of oil–water separation membranes with practical applications.</p> Graphic abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Preparation of UiO-66-NH2/MgAl-LDHs @ sodium alginate fiber membrane and determination of oil–water separation performance

  • 期刊论文

  • 发表日期：

    2025年12月3日

查看全文
  • Hongmei Wang,
  • Jiawen Zhang,
  • Zhenggang Wang,
  • Shuang Hu,
  • Zhuang Fu,
  • Jingfeng Zhang,
  • Xichao Liang

摘要

Oil spills and waste oil discharges generate vast quantities of oily wastewater, posing severe ecological and environmental challenges that also endanger human health, necessitating the development of advanced and efficient oil–water separation membranes. In this work, a novel sodium alginate fiber (SA) based superhydrophilic/underwater superoleophobic (SUS) membrane was developed for oil-in-water (o/w) separation through a facile method by blending SA nanofibers with UiO-66-NH2/MgAl-LDH cluster-assembled microspheres. The micron-scale spheres were embedded within SA nanofibers, resulting in the formation of a loosely stacked nanofiber structure that enhanced water permeability. The obtained composite membrane exhibited good o/w separation performance with a high separation efficiency of > 99% and a flux rate of ~ 2661 L m−2 h−1. Moreover, the underwater oil contact angle (OCA) of U-LDHn@SA composite membrane was around 140°, which indicated that U-LDHn@SA composite membrane has good underwater superoleophobicity. After 10 cycles, the oil–water separation efficiency exceeded 99%, and the water flux always exceeded 2021 L m−2 h−1. The composite membrane also exhibited the potential to separate oil-in-water emulsion with the highest oil rejection of 94%. The membrane showed antifouling properties, recyclability, and stability in harsh conditions. This work provides a new idea for the development of oil–water separation membranes with practical applications.

Graphic abstract