Oil Absorbents Based on Melamine/Lignin by a Dip Adsorbing Method

Oil Absorbents Based on Melamine/Lignin by a Dip Adsorbing Method
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基于三聚氰胺/木质素的浸吸法吸油剂

DOI:
10.1021/acssuschemeng.5b01187
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发表时间:
2015-11
影响因子:
8.4
通讯作者:
Wang Chaoyang
Wang Chaoyang
中科院分区:
化学1区
文献类型:
--
作者:
Yang Yu;Yi Huan;Wang Chaoyang

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有效地去除水中的油类和渗漏化学品在海洋学、环境保护和工业生产中具有重要意义。能够减少环境污染的材料需求量很大。在这里,我们开发了一种基于木质素和商用三聚氰胺海绵的浸渍吸附过程,方便地合成了超轻、高疏水和超亲油海绵(UHS海绵)。得到的超高密度海绵具有高孔隙率、超低密度(6.4mgcm-3)的互联结构。UHS海绵作为骨架的疏水碳涂层及其捕集空气的微观结构,表现出高度的疏水性和超亲油性,这有利于其在油水分离中的应用。除木质素外,其他生物质如单宁也适合作为改性剂,通过浸渍吸附法制备超高温海绵。结果表明,这种新型海绵具有良好的油/水分离性能,如高选择性、低成本等。
Effective removal of oils and leakage chemicals from water is of significance in oceanography, environmental protection, and industrial production. Materials that can reduce environmental pollution are in high demand. Herein, we have developed a facile synthesis of ultralight, high-hydrophobic, and superoleophilic sponges (UHS sponges) through a dip adsorbing process based on lignin and commercially available melamine sponges. The obtained UHS sponges consist of an interconnected structure with high porosity and ultralow density (6.4 mg cm–3). As the hydrophobic carbon coating of the skeleton and its microstructure trapping the air, the UHS sponge exhibits high-hydrophobicity and superoleophilicity, which are beneficial to its applications in oil–water separation. Besides lignin, other biomass like tannin is also suitable as the modification agent to prepare UHS sponges via a dip adsorbing method. As a result, this novel sponge exhibits excellent oil/water separation performance such as high selectivity, ...
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