Research Progress of Surface Modified Sponge for Water Pollution Treatment
Surface modified sponge has gained significant attention as an adsorption material,due to its flexible design,high porosity and superior adsorption capacity.The latest research achievements and trends of surface modified sponges for oil-water separation,adsorption of heavy metals and dyes in recent years are reviewed from the perspective of surface modification strategies and improved properties.The current bottleneck issues in research on surface modified sponges are pointed out.The studies show that the hydrophobic/oleophobic modification on sponge surface successfully leads to oil-water separation.The grafted functional groups onto the modified sponge surface can implement the adsorption of heavy metal ions through chelation and electrostatic interaction.The effects between the introduced groups on the sponge surface and the dye molecules are the important factors for the realization of dye adsorption,including charge attraction,π-π interaction and hydrogen bond.The future research on surface-modified sponges will be directed toward multifunctionality and intelligence.
Surface modified spongeWater pollution treatmentOil-water separationHeavy metal adsorptionDye adsorption