Superoleophilic Magnetic Iron Oxide Nanoparticles for Effective Hydrocarbon Removal from Water
Superoleophilic Magnetic Iron Oxide Nanoparticles for Effective Hydrocarbon Removal from Water
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DOI：
10.1002/adfm.201805742
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发表时间：
2019-04-11
影响因子：
19
通讯作者：
Halik, Marcus
中科院分区：
文献类型：
--
作者：
Sarcletti, Marco;Vivod, Dustin;Halik, Marcus
通过使用基于共价官能化的磁性纳米颗粒的新型吸附剂材料，从水中有效地提取各种烃。用十六烷基膦酸的自组装单层对磁铁矿纳米颗粒进行官能化使得纳米颗粒亲油，并且磁铁矿的磁性性质允许简单地提取烃浸泡的吸附剂。吸附剂材料能够以高达吸附剂体积14倍的高提取率提取单一污染物如烷烃和芳烃以及复杂烃混合物如原油。实验结果解释了分子动力学模拟上的吸附的单组分从烃-水混合物的烷基膦酸层的纳米粒子。核-壳吸附剂材料是高度稳定的，因此，可在几个连续的提取循环中重复使用而不降解。在不同水温、不同水源和不同磁芯材料下测定萃取性能，并与十七烷酸官能化磁铁矿进行比较。新的吸附剂材料提供了从水中有效、可靠、廉价和环境友好地去除烃的机会。
Various hydrocarbons are efficiently extracted from water by using a new sorbent material based on covalently functionalized magnetic nanoparticles. The functionalization of the magnetite nanoparticles with a self-assembled monolayer of hexadecylphosphonic acid renders the nanoparticles oleophilic and the magnetic nature of magnetite allows for simple extraction of the hydrocarbon-soaked sorbent. The sorbent material is capable of extracting single contaminants such as alkanes and aromatics and complex hydrocarbon mixtures such as crude oils in high extraction rates of up to 14 times the sorbent volume. Experimental results are explained by molecular dynamics simulations on the adsorption of single components from a hydrocarbon-water mixture to the alkylphosphonic acid layer on the nanoparticles. The core-shell sorbent material is highly stable and therefore, reusable over several successive extraction cycles without degradation. The extraction performance is determined at different water temperatures, different water sources, and different magnetic core materials and evaluated compared to heptadecanoic acid functionalized magnetite. The new sorbent material provides the opportunity for an efficient, reliable, inexpensive, and environmental friendly removal of hydrocarbons from water.