A two-step hydrophobic fabrication of melamine sponge for oil absorption and oil/water separation

作者：Gao, Huimin; Sun, Peng; Zhang, Yu; Zeng, Xiaoping; Wang, Dawei; Zhang, Yong; Wang, Wei^*; Wu, Jiangyu^*

来源：Surface and Coatings Technology, 2018, 339: 147-154.

DOI：10.1016/j.surfcoat.2018.02.022

• Melamine sponge
• Hydrophobic modification
• Silica nanoparticle
• Oil absorption
• Oil/water separation

Hydrophobic sponges have drawn great attention recently as potential absorption materials for oil spill cleanup and water/oil separation due to their excellent elasticity, absorptivity and selectivity. Herein, we demonstrate a facile and cost-effective method to fabricate hydrophobic sponges based on commercial melamine sponge via a two-step process, i.e., silica nanoparticle adsorption and silanization covering procedures. The hydrophobic modification was confirmed by ATR-FTIR and SEM characterization. The modified sponge shows hydrophobicity and oleophilicity and exhibited excellent absorption capacity for various oils and organic solvents (60-109 g/g). Interestingly, this modified sponge displays great endurability towards ultrasonication or at acid/alkali circumstance, and presents remarkable reusability after 12 cycles of absorption-squeezing process. In addition, a piece of modified sponge can be employed for continuous collecting of oil/solvent from water by using a simple collection device. These hydrophobic, elastic, and durable melamine sponges are very promising materials for practical oil absorption and oil/water separation.

• 出版日期2018-4-15
• 单位华中科技大学; 武汉工程大学