RSC Advances
·
2016
·Vol. 6
·期 29
·24773-24779
·
IF 3.289
Liuhua Yu,Gazi Hao,Shuai Zhou,Wei Jiang
With the continuous exploitation and utilization of oil resources, oil pollution has become increasingly serious, which not only causes economic loss, but also damages the living environment of human beings. Herein, oleic acid coated Fe3O4 particles and PS microspheres were introduced to the surface of pure foam through an inexpensive two-step immersion method; we obtained a durable and modified magnetic polystyrene foam (DMMPF) with high efficiency and selectivity. The as-obtained DMMPF exhibited superhydrophobicity, superoleophilicity, and fast magnetic response via the surface chemical modification. In addition, the as-prepared DMMPF could be used for continuous separation of various oils and organic solvents from the water surface. The absorption intake capacity of DMMPF was 40.1 times its own weight and the absorbed oils/organic solvents could be collected by simple mechanical extrusion. Furthermore, the as-prepared DMMPF retained an excellent absorption capacity and a large water contact angle after 60 separation cycles. It is recognized that DMMPF could be suitable for large-scale oil spill processing.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2016
·
IF 2.567
Liuhua Yu,Xiang Zhou,Wei Jiang
A convenient self-assembly method was developed to prepared a highly efficient and recyclable magnetic titanium dioxide foam by using polyethylene ordinary shock absorption foam as the support. The magnetic titanium dioxide foam acquired superhydrophobicity after a facile surface chemical modification process, and it could easily float on the water surface after selective absorption, exhibiting its excellent unsinkable property. The uptake capacity of the superhydrophobic magnetic foam was about 10 times that of the original shock absorption foam, making the as-obtained foam to be a kind of promising absorption material for oil/organic solvent removal. In addition, the superhydrophobic magnetic titanium dioxide foam could be simply recycled under the magnetic field and still retained excellent absorption capacity even after 80 absorption–desorption cycles, indicating its excellent durability. Moreover, the absorbed oils and organic solvents could be reclaimed through mechanical squeezing, which could avoid wasting of resources. The results implied that the as-prepared foam had practical applications in the treatment of oil leakage and the removal of organic solvents from wastewater.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2016
·
IF 3.299
Liuhua Yu,Gazi Hao,Lei Xiao,Qiushi Yin,Mengting Xia,Wei Jiang
In this study, a robust magnetic polystyrene foam with selective absorption ability was successfully fabricated via a low-cost method. Owing to its highly hydrophobic and superoleophilic properties, it could selectively absorb a variety of oils and organic solvents from a polluted water surface. The robust magnetic polystyrene foam had a large absorption capacity up to 17.83 times of its own weight and could be separated from the surface of water by magnetic technology. More importantly, the magnetic polystyrene foam could still retain a high absorption capacity and water contact angle for oil-water separation after the 10th cycle. In addition, the magnetic polystyrene foam could be reused through a simple squeeze treatment. High absorption capacity, special selectivity and excellent recyclability promise the material great potential for the cleanup of oils and organic solvents from water surface.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Yunfen Shi,Yinyan Zhong,Zhong Sun,Xiaozhen Ma,Shuqi Li,Fan Wang,Yupeng An,Qing Luo,Jin Zhu,Jing Chen,Ning Yan
Taking effective measures to remove oil and organic pollutants from water has become a top priority. In this study, we developed a novel superhydrophobic and magnetic lignin-based polyurethane foam for highly efficient adsorption of organic pollutants and removal of viscous crude oil from water. The superhydrophobic bio-based magnetic foam was prepared by the addition of Fe 3 O 4 nanoparticles during the foaming process followed by the immersion in an octadecyltrimethoxysilane (OTMS) solution. After modification by OTMS, the water contact angle (WCA) of the foam adsorbent was increased by 37.1°, exhibiting a high WCA of 156°. Fe 3 O 4 nanoparticles endowed the foam with excellent photo-thermal performance, allowing the efficient adsorption of both crude oil and a wide range of organic solvents. The foam adsorbent had a high adsorption capacity up to 18.8 times of its own weight. The bio-based adsorbent could still retain a high adsorption capacity after over ten cycles. The magnetic property facilitated control and recycling of the foam adsorbent by using a magnetic field. Moreover, the bio-based foam adsorbent was fully degraded in a methanol/sodium hydroxide solution (0.5 mol/L) at 60 °C after 8 h. The outstanding mechanical stability, reusability, and environmental friendliness make these bio-based foam adsorbent highly promising for cleaning up pollutions in water.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Xilai Jia,Jie Wang,Xiao Zhu,Tihong Wang,Fan Yang,Wenjun Dong,Ge Wang,Haitao Yang,Fei Wei
Inorganic composites with mechanical flexibility are desired in synthesis of advanced materials for multifunctional applications. Here, we demonstrated the synthesis of a lightweight and flexible composite aerogel composed of carbon nanotubes (CNTs) and mesoporous iron oxide (Fe 3 O 4 ) using an in-situ growth method. CNTs serve as frameworks for the growth of magnetic ferrite nanoparticles ; while the growth of the magnetic nanoparticles crosslinks CNTs into an integrated structure. Therefore, mesoporous Fe 3 O 4 particles are threaded by CNTs, leading to formation of the monolithic magnetic foam with a high particle loading of more than 88 wt%. This magnetic foam is highly porous, effective for microwave absorption. Based on the rational combination of Fe 3 O 4 and CNTs, the composite material can offer excellent microwave absorbing performance, particularly in the low-frequency range of 3–5 GHz. Moreover, the porous composite aerogel can be compacted into a flexible magnetic nanopaper. Because of the structure properties, the composite may be used in many other applications such as energy storage, catalyst, and biochemistry.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Xiaoshu Lv,Denghui Tian,Yiyin Peng,Junxi Li,Guangming Jiang
Fabrication of robust and cost-effective adsorbents for quick and easy clean-up of oil spills is highly desired. Here, we developed one novel porous melamine foam (MF) with both the reduced graphene oxide (rGO) and hydrophobic magnetic nanoparticles decorated on its skeleton (r-MGMF) via a stepwise assembly and reductive annealing process. The resultant r-MGMF shows highly superhydrophobic with a water contact angle (WCA) of 164.4 ± 2.0°, and superparamagnetic with a saturated moment of 10.59 emu/g. With its porous structure, superhydrophobic surface and magnetic property, r-MGMF can move under the control of a magnet, and is highly efficient to separate oil from water with a high adsorption capacity, and for example, can adsorb canola oil about 54.13 times of its own weight. The used r-MGMF can be regenerated by a simple squeezing process without significant structure and efficiency degradation at least ten runs of adsorption-regeneration process. Additionally, the r-MGMF is competent to continuously separate an oil-water mixed flow with a separation efficiency of above 96.33%. High selectivity, hydrophobic stability, large adsorption capacity, and excellent recyclability promise r-MGMF a great potential in oily wastewater treatment.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 20
·12301
·
IF 6.208
Xiaoling Xu,Xiaoke Tian,Guangxu Bo,Xingjian Su,Jinyong Yan,Yunjun Yan
Sustainable renewable polymer foam used as a lightweight porous skeleton for microwave absorption is a novel strategy that can effectively solve the problems of the large surface density, high additive amount, and narrow absorbing band of absorbing materials. In this article, novel renewable microwave-absorbing foams were prepared usingSapiumse biferumkernel oil-based polyurethane foam (BPUF) as porous matrix and Fe3O4-nanoparticles as magnetic absorbents. The microstructure and the microwave absorption performance, the structural effects on the properties, and electromagnetic mechanism of the magnetic BPUF (mBPUF) were systematically characterized and analyzed. The results show that the mBPUF displayed a porous hierarchical structure and was multi-interfacial, which provided a skeleton and matching layer for the Fe3O4nanoparticles. The effective reflection loss (RL≤ −10 dB) frequency of the mBPUF was from 4.16 GHz to 18 GHz with only 9 wt% content of Fe3O4nanoparticles at a thickness of 1.5~5 mm. The surface density of the mBPUF coatings was less than 0.5 kg/cm2at a thickness of 1.8 mm. The lightweight characteristics and broadband absorption were attributed to the porous hierarchical structures and the dielectric combined with the magnetic loss effect. It indicates that the mBPUF is a prospective broadband-absorbing material in the field of lightweight stealth materials.Keywords:bio-based polyurethane;lightweight magnetic foam;hierarchical microstructure;microwave absorption mechanism
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2015
·
IF 2.587
Ning Zhang,Wei Jiang,Tianhe Wang,Junjun Gu,Suting Zhong,Shuai Zhou,Tan Xie,Jiajun Fu
A simple processing technique to produce novel magnetic poly(styrene-divinylbenzene) (Poly(St-DVB)) monoliths with highly open porous structure and lipophilicity is described. A porosity of 98.1% was achieved with the technique of high internal phase emulsions (HIPEs). The porous monolith possessed hydrophobicity with a water contact angle of 142° and absorbed oils from water selectively with an oil intake capacity of approximately 23 times its own mass. Incorporation of carbonyl iron powders (CIPs) enabled magnetism allowing the oil-soaked composite to be readily collected by a magnet. The composite saturated with oils could be regenerated by simple centrifugation, and the tests showed that the oil intake capacities were not impaired after 10 absorption/regeneration cycles. As Poly(St-DVB) is a low-cost traditional material and is easily manufactured in monolithic forms via direct molding and controlled polymerization, the added features make the porous Poly(St-DVB) composite a very competitive candidate for oil/water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2023
·Vol. 8
·期 4
·2201255
·
IF 6.8
Zisheng Zong,Shuo Zhang,Zhigang Wu
Hard magnetic soft materials (HMSMS) have been recently intensively explored in soft robots, owing to its native advantages such as untethered, rapid and reversible actuation, as well as large shape changes. However, in the existing studies, HMSMS is majorly applied by a magnetic field to produce bending, folding, and even twisting, that is, shape morphing, to realize multimodal locomotion. Meanwhile, such as contraction deformation, which may be employed in precise drug delivery, has been neglected in a long term. Here, an anisotropic contraction in a porous structure, hard magnetic foam (HMF), which is mechanically ultra-soft (with a shear modulus of 4.5 kPa) but magnetically hard (with a residual magnetic flux density of 12 mT), is reported. The investigation of HMF structures indicates that anisotropic contraction is dominated by the magnetodeformational effect and the magnetic body-force against support constraint. By adjusting the magnetic fields directions, the relationship between these two factors can be regulated to achieve a maximum contraction of 43% (synergy) or negligible deformation (antagonism). Finally, HMF is utilized to realize precision drug delivery since it has the advantages of no leakage during moving, precisely adjustable drug release rate (from 0.008 to 0.62 mL min −1 ), and no residues after leaving.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 16
·7316-7325
·
IF 8.867
Yan Qiu Zhang,Xiao Bin Yang,Zhen Xing Wang,Jun Long,Lu Shao
Highly-efficient separating materials, which can simultaneously remove oil from water and adsorb water-soluble contaminants like dyes, are in high demand for wastewater treatment. Herein, a magnetic, multifunctional melamine foam (MF) containing Fe3O4 nanoparticles, poly(sulfobetaine methacrylate) (PSBMA) and polydopamine (PDA) was fabricated via a simple mussel-inspired one-pot process, which not only can separate oil/water mixtures and emulsions but also has cationic-dye selective separation abilities. The addition of poly(sulfobetaine methacrylate) (PSBMA) allows immobilization to bind Fe3O4 nanoparticles tightly on the surface of the melamine foam skeleton so as to endow the 3D foam with superoleophobicity underwater, as well as providing active sites for the adsorption of soluble dyes in water. The special material synergy makes the resultant magnetic MF@Fe3O4@PDA/PSBMA foam quickly absorb cationic dyes and allows for the selective removal (in 2 minutes) of cationic dyes from dye mixtures with high efficiency (>96%), high stability and flexibility even after 10 cycles, when driven by a magnet. Furthermore, the developed 3D magnetic foam is able to separate oil–water mixtures in highly acidic, alkaline, and salty environments. Our strategy may open a new avenue to obtain high-performance 3D magnetic assemblies for wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）