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Preparation of CoFe2O4/sawdust and NiFe2O4/sawdust magnetic nanocomposites for removal of oil from the water surface
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2019-08-20 , DOI: 10.1002/jccs.201800452
Azadeh Houshangi 1 , Saeed Jamehbozorgi 2 , Mohammad Yousefi 3 , Reza Ghiasi 4
Affiliation  

In this study, CoFe2O4/Sawdust and NiFe2O4/Sawdust magnetic nanocomposites were synthesized using a hydrothermal method, and then characterized using X‐ray powder diffraction, Infrared, scanning electron microscopy, Brunauer–Emmett–Teller/Barrett–Joyner–Halenda, and vibrating‐sample magnetometer techniques. In this study, unmodified sawdust (US), modified sawdust (MS), unmodified CoFe2O4/sawdust (UCS), modified CoFe2O4/sawdust (MCS), unmodified NiFe2O4/sawdust (UNS), and modified NiFe2O4/Sawdust (MNS) magnetic nanocomposites, which are inexpensive, economical, environmentally friendly absorbents, and have a high selective hydrophobic, were used for the removal of oil from the water surface. The results show that the UCS, MCS, UNS, and MNS magnetic nanocomposites can selectively absorb the oil spreading on the water surface, due to its superhydrophobicity and superoleophilicity, and can be easily collected from water under the influence of a magnetic field. In addition, the results showed that the absorbents reach their equilibrium at the 30‐min mark. Among all the absorbents, the MNS magnetic nanocomposite showed the maximum absorption capacity (18.172 g/g) at the 40‐min mark. The results of the kinetic studies showed that the second‐order kinetic equation with the highest correlation coefficient had the best fit with the experimental results.

中文翻译:

制备CoFe2O4 /木屑和NiFe2O4 /木屑磁性纳米复合材料以去除水表面的油

在这项研究中,使用水热法合成了CoFe 2 O 4 /木屑和NiFe 2 O 4 /木屑磁性纳米复合材料,然后使用X射线粉末衍射,红外,扫描电子显微镜,Brunauer–Emmett–Teller / Barrett– Joyner–Halenda和振动样品磁力计技术。在这项研究中,未改性的木屑(美国),改性的木屑(MS),未改性的CoFe 2 O 4 /木屑(UCS),改性的CoFe 2 O 4 /木屑(MCS),未改性的NiFe 2 O 4 /木屑(UNS)和改性NiFe 2 O 4锯末/木屑(MNS)磁性纳米复合材料是廉价,经济,环保的吸收剂,具有高选择性疏水性,可用于从水表面去除油。结果表明,UCS,MCS,UNS和MNS磁性纳米复合材料具有超疏水性和超亲油性,因此可以选择性地吸收散布在水表面的油,并且在磁场的影响下可以很容易地从水中收集。此外,结果表明,吸收剂在30分钟处达到平衡。在所有吸收剂中,MNS磁性纳米复合材料在40分钟标记处显示出最大吸收容量(18.172 g / g)。
更新日期:2020-02-14
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