通过冷冻干燥技术,将金属-有机框架材料CMIL-101负载在壳聚糖(CS)气凝胶表面,赋予其磁性、光热转换性能,并进一步采用聚二甲基硅氧烷(PDMS)进行疏水改性,制备出多功能超疏水复合气凝胶CMIL-101/CS@PDMS。该复合气凝胶水接触角达150.4°,可选择性吸油并实现高效油水分离(分离效率>98%),经过10次循环后性能保持稳定。此外,该复合材料对多种污染物表现出优异的去除能力,对聚苯乙烯微塑料和甲基橙的吸附效率分别达99%和93.7%,在含油废水治理与新污染物协同去除方面展示出广阔的应用前景。
Through freeze-drying technology,the metal-organic framework material CMIL-101 was immobilized on the surface of chitosan (CS) aerogel,endowing it with magnetic properties and photothermal conversion capabilities.The resulting composite was further modified with polydimethylsiloxane (PDMS) to achieve hydrophobicity,leading to the fabrication of a multifunctional superhydrophobic composite aerogel,denoted as CMIL-101/CS@PDMS.This composite aerogel exhibited a water contact angle of 150.4°,enabling selective oil absorption and efficient oil-water separation (separation efficiency >98%),with stable performance maintained after 10 cycles.Additionally,the composite demonstrated excellent removal capability for various pollutants,achieving adsorption efficiencies of 99% for polystyrene microplastics and 93.7% for methyl orange,highlighting its promising potential for the treatment of oily wastewater and the synergistic removal of emerging contaminants.
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基金资助
国家自然科学基金青年科学基金项目(32102086);辽宁大学本科教学改革项目(JG2024BYLW03;JG2025CSYJ15)
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