Details

Autor(en) / Beteiligte

• Liu, Mingjie
• Liu, Xingxing
• Zheng, Shaoqin
• Jia, Kangle
• Yu, Longfei
• Xin, Jinlan
• Ning, Junhua
• Wen, Wu
• Huang, Linjia
• Xie, Jinbiao

Titel

Environment-Friendly superhydrophobic sponge for highly efficient Oil/Water separation and microplastic removal

Ist Teil von

• Separation and purification technology, 2023-08, Vol.319, p.124060, Article 124060

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Link zum Volltext

Quelle

ScienceDirect Journals (5 years ago - present)

Beschreibungen/Notizen

• [Display omitted] •Hydrophobic Al2O3 nanoparticles were synthesized using dehydroabietic acid.•A superhydrophobic sponge was developed using the grafted Al2O3 nanoparticles.•The coated sponge presents efficient separation of oil/water mixtures.•Various microplastics were removed from aqueous solutions using coated sponges. The pollution of water resources by oils and microplastics is a significant global issue affecting the environment and human health. However, developing a sustainable multifunctional adsorption material to remove multiple pollutants has always been a challenge. Herein, an eco-friendly superhydrophobic polyurethane sponge was developed using polydimethylsiloxane (PDMS) and dehydroabietic acid grafted Al2O3 nanoparticles by dip-coating technique. The green dehydroabietic acid has strong hydrophobicity, which can make the coated sponge have excellent separation of oil/water mixtures or emulsions and has a high oil absorption capacity (20–55 g/g) for various kinds of oils. Continuous oil/water separation was also achieved by gravity-driven or with the assistance of peristaltic pump. After 10 separation cycles, the coated sponge still exhibits excellent separation efficiency (greater than 97%) due to its outstanding mechanical durability and compressive performance. Moreover, various kinds of microplastics could be efficient captured from the aqueous solution at a higher rate using the coated sponge, which is mainly due to the capillary force of the coated sponge and the non-covalent force and conjugates between PDMS and microplastics. This work provides a new strategy to fabricate a sustainable multifunctional sponge for oily wastewater and microplastics and shows the great potential for large-scale practical application.