The synthesis of hierarchical porous Al2O3/acrylic resin composites as durable, efficient and recyclable absorbents for oil/water separation
The synthesis of hierarchical porous Al2O3/acrylic resin composites as durable, efficient and recyclable absorbents for oil/water separation
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DOI：
10.1016/j.cej.2016.10.049
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发表时间：
2017-02-01
影响因子：
15.1
通讯作者：
Fang, Jiasheng
中科院分区：
文献类型：
--
作者：
Yue, Xuejie;Zhang, Tao;Fang, Jiasheng
在这项工作中，我们报告了一种简单而廉价的方法，该方法被证明用于创建分层多孔Al2O3/丙烯酸树脂复合材料，作为耐用，高效和可回收的油/水分离吸收剂。以十六烷基三甲基溴化铵（CTAB）为结构导向剂，通过水热法制备了具有多孔结构的层状γ - alooh。层次化Al2O3团簇作为树脂复合材料的无机相，经煅烧处理后保留了独特的层状γ - alooh结构。为了提高Al2O3团簇的疏水性和亲油性能，采用硅烷偶联剂（A151）在微波辐照下对Al2O3团簇进行表面改性。由于疏水官能团在无机Al2O3团簇上的紧密结合和固有的稳定性，表面改性的Al2O3团簇表现出优异的疏水性、亲油性和化学稳定性。接枝的疏水分子链。在偶联剂的作用下，在微波照射下，在改性的Al2O3簇上以丙烯酸丁酯（BA）和甲基丙烯酸丁酯（MBA）为原料进行悬浮聚合，合成了多孔Al2O3/丙烯酸树脂复合材料。多孔Al2O3/丙烯酸树脂复合材料能有效分离油脂和有机溶剂，吸油率高，留油能力强。此外，由于多孔Al2O3簇和丙烯酸树脂的协同吸收，所得树脂复合材料具有较高的吸油能力。这些优异的性能，如优异的油可回收性、优异的可回收性和高的保油能力，使该材料成为从水中分离各种有机液体的理想候选材料。(C) 2016 Elsevier B.V.版权所有
In this work, we report a facile and inexpensive approach which was demonstrated for the creation of hierarchical porous Al2O3/acrylic resin composites as durable, efficient and recyclable absorbents for oil/water separation. Using hexadecyl trimethyl ammonium bromide (CTAB) as a structure-directing agent, the lamellar gamma-AlOOH with porous architectures was successfully prepared via a hydrothermal route. The hierarchical Al2O3 clusters, as the inorganic phase of resin composites, retain the unique structure of lamellar gamma-AlOOH by calcination treatment. In order to enhance the hydrophobic and oleophilic properties of Al2O3 clusters, silane coupling agent (A151) was used to modify the surface of Al2O3 clusters under microwave irradiation. The surface modified Al2O3 clusters exhibit excellent hydrophobicity, oleophilicity and chemical stability, owing to the tight binding of the hydrophobic functional groups on the inorganic Al2O3 clusters and the inherent stability.of the grafted hydrophobic molecule chains. The porous Al2O3/acrylic resin composites were synthesized by suspension polymerization of butyl acrylate (BA) and methacrylic acid butyl ester (MBA) on the surface modified Al2O3 clusters under microwave irradiation in the presence of coupling agents. The porous Al2O3/acrylic resin composites can effectively separate oils and organic solvents with high oil absorption rate and high oil retention capacity. Moreover, the obtained resin composites have high oil uptake capacities due to the synergy absorption of porous Al2O3 clusters and acrylic resin. These excellent performances, such as excellent oil recoverability, excellent recyclability and high oil retention capacities, endow the material to be an ideal candidate to separate a variety of organic liquids from water. (C) 2016 Elsevier B.V. All rights reserved.