CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Guanzhou Luo,Lanfang Wen,Kai Yang,XinYing Li,Shouping Xu,Pihui Pi,Xiufang Wen
A robust and durable fluorinated 8-MAPOSS-based superamphiphobic fabric (Fabrics-S-MAPOSS-F) was obtained by in situ grafting of 3-Mercaptopropyltriethoxysilane (MPTES), 8-Methacryl polyhedral oligomeric silsesquioxane (8-MAPOSS) and 2-(perfluorooctyl) ethyl methacrylate (FMA) on a cotton fabric. The micropores and mesopores bonding structure with low surface energy on the as-prepared Fabrics-S-MAPOSS-F can capture air, endowing the fabric antifouling, self-cleaning, dehydration resistance, buoyancy boost, drag reduction performance, as well as good durability after UV irradiation, mechanical damage, 300 °C oven heating for 2 h and separately immersion in acid/base/salty solution, even in 98% H 2 SO 4 for 30 min. The Fabrics-S-MAPOSS-F can float on the surface of water or blended oil effortlessly with loading 18.8 times and 15.6 times its own weight of SiO 2 powder, respectively. Compared to untreated fabric, the Fabrics-S-MAPOSS-F exhibits a sailing velocity boost by nearly 2.5 times in both water and blended oil. The drag reduction rate is as high as ~154.7%. This novel smart Fabrics-S-MAPOSS-F can be considered a promising material in life jacket, special garments, package protection or smart device.
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高影响因子
Journal of Bionic Engineering
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2019
·Vol. 16
·期 1
·38-46
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IF 2.463
Zhang Xuemei,Fu Feng,Gao Xiaoming,Hou Xiufang
Magnetically driven super-hydrophobic materials were prepared by Fe 3 O 4 nanoparticles and stearic acid, which were deposited on the surface of polyurethane sponges. The presence of the Fe 3 O 4 nanoparticles makes the sponge have the magnetic, and the micro-nano hierarchical structure and hydrophobic functional groups lead to the sponge have excellent superhydrophobicity. The as-prepared sponge exhibited excellent absorption capacities for various oils and organic solvents ranging from 23.8 times to 86.7 times of its own weight. Moreover, the oil separation capacities still keep a high value after 50 cycles of squeezing the saturated absorbed as-prepared sponge. All of these satisfactory properties make the as-prepared sponge as a candidate of ideal absorbents for oily industrial wastewater and oil spills in oceans.
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SURFACE & COATINGS TECHNOLOGY
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2019
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IF 3.192
Jingcheng Du,Cailong Zhou,Zhijie Yang,Jiang Cheng,Yuanyuan Shen,Xinjuan Zeng,Luxi Tan,Lichun Dong
The economic and green synthesis of metal-organic frameworks (MOFs) is of great significance. In this work, a facile method for preparing HKUST-1 MOFs at room temperature with insoluble Cu 2 (OH) 2 CO 3 particles and film as the precursors was developed. The as-prepared HKUST-1 MOFs were characterized by using the XRD , Raman spectrum , FTIR, XPS and N 2 adsorption-desorption analyses, and the wetting property of the HKUST-1 film was also evaluated. The results demonstrated that the MOF film decorated copper mesh possesses the promising underwater superoleophobicity and underoil superhydrophobicity, with the contact angles of non-wetting liquids larger than 150°. The on-demand oil/water separation was subsequently realized through a prewetting method, obtaining the high separation efficiency up to 97%. The facile route by using solid precursors developed in this work might provide a new strategy for preparing MOFs, and the special wetting properties of the as-prepared materials could enrich the applications of MOF films as well.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
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2019
·
IF 1.92
Lixiang Shen,Ya Pan,Heqing Fu
A super hydrophobic cotton fabric was successfully prepared by a facile dip-coating method using a synthetic fluorine-free and UV curable super hydrophobic coating solution without additional particles. The obtained cotton fabric exhibited super hydrophobic property with a water contact angle above 159.5° and sliding angle 7.5°. Moreover, the treated cotton fabric could retain its super hydrophobic performance even after abrasion and accelerated laundering, as well as for different kinds of corrosive liquids. The coated cotton fabric was used to make up a surface tension-driven, gravity-assisted, floating oil–water separation device with separation efficiency above 99%. Additionally, the oil–water separation efficiency of super hydrophobic cotton fabric always was above 98% after 30 recycle times for cyclohexane–water mixture. POLYM. ENG. SCI., 59:E452–E459, 2019. © 2019 Society of Plastics Engineers
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
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IF 3.375
Jingjing Wu,Hongqiang Li,Xuejun Lai,Zhonghua Chen,Xingrong Zeng
With increasing environmental pollution, superhydrophobic materials for effectively separating oil/water mixtures especially emulsions have attracted considerable interest. Herein, we propose a facile vacuum-filtration approach to fabricating flexible superhydrophobic polydimethylsiloxane@multiwalled carbon nanotubes (PDMS@MWCNTs) membrane. The fabricated membrane had outstanding superhydrophobicity with a water contact angle of 167° and a water sliding angle of 2.9°, self-cleaning ability, and good resistances to cold, hot, strong acid, alkali, and abrasion. Owing to the connected nanoscale pores constructed by the overlapped MWCNTs, the membrane was successfully applied to separate various water-in-oil emulsions and exhibited excellent reusability. Additionally, taking advantage of electrical conductivity and the electrothermal conversion effect, the PDMS@MWCNTs membrane could also be utilized for quick deicing at a low voltage. Our findings provided a new strategy to fabricate functional superhydrophobic materials for various potential applications.
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高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Lei Tang,Zhixiang Zeng,Gang Wang,Luli Shen,Lijing Zhu,Yingxin Zhang,Qunji Xue
The superhydrophilic self-cleaning surface can perfectly deal with oil pollution, which cannot be realized by the superhydrophobic surface. This research is designed to study the mechanism of wetting behavior of superhydrophilic coating with different function groups and guide to design a stable self-cleaning surface. We prepare several hydrophilic coatings including nonionic, ionic, and zwitterionic coatings to investigate their self-cleaning performance underwater when they have been polluted by oil in the dry state. The chemical composition, surface roughness, static and dynamic wettability, underwater oil adhesive force, and swelling degree of the coatings are studied to explore their oil dewetting mechanism. The results indicate that the wettability of the coating to water and oil is the key factor to determine the self-cleaning performance. The smooth 3-sulfopropyl methacrylate potassium salt (SA) anionic coating shows the best self-cleaning performance even when polluted by heavy crude oil in the dry state in air. It is also found that in the dry state, the rough hydrophilic anionic surface will lock up the oil in the structures and then lose its self-cleaning ability underwater, whereas the oil droplet can detach from the smooth coating surface quickly. Meanwhile, the superhydrophilic and underwater superoleophobic SA anionic surfaces also exhibit excellent anti-fogging and oil–water separation performance.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
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IF 3.131
Tao Yan,Taiheng Zhang,Guoqing Zhao,Chongyang Zhang,Caifeng Li,Feipeng Jiao
More and more attention has been paid to materials with special wettability for the potential application in oil/water separation and oil-spill treatment. In this work, we presented a simple, efficient, and environmentally friendly method to develop a magnetic textile that could achieve switchable wettability by changing the pH value of the surface. The textile was fabricated by a mixture of Fe 3 O 4 nanoparticles and dodecylamine (DDA)-modified TiO 2 with high permeate flux, high separation efficiency and good stability. The Fe 3 O 4 /DDA-TiO 2 textile showed its superhydrophobicity and superoleophilicity for neutral water (pH = 7), while the textile became superhydrophilic and underwater superoleophobic for acidic water (pH = 2).The as-prepared textile was investigated using eight different density oil/water mixtures. The results showed that the as-prepared textile possessed excellent separation efficiency (>99%) and high oil flux of about 9400–13,000 L h −1 m -2 , water flux of about 6400–6700 L h −1 m -2 and good reusability. Meanwhile, the textile can maintain superhydrophobic under high temperature (˜170 °C), which significantly indicated its practical application in harsh environment. Because of its magnetism, the textile can be recovered and removed by magnets. We believe that this work may provide a number of potential application, such as microfluidic device, oil recovery and sewage purification.
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MATERIALS LETTERS
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2019
·
IF 3.019
Xiaofeng Liao,Hongqiang Li,Xuejun Lai,Wanjuan Chen,Xingrong Zeng
Superhydrophobic materials with special functions such as electrical conductivity, magnetism and self-repairing have attracted considerable attention. Herein, a superhydrophobic conductive polydimethylsiloxane@silver nanowires (PDMS@AgNWs) cotton fabric was fabricated via a simple dipping-thermal curing method. Owing to the combination of rough structure constructed by AgNWs and the covered low-surface-energy PDMS, the as-fabricated cotton fabric exhibited superhydrophobicity with a high water contact angle (WCA) of 156°, and the separation efficiency for oil-water mixture reached 95.6%. Importantly, taking advantage of the excellent conductivity and electrothermal conversion performance, the functional cotton fabric was successfully applied in the fields of quick deicing under low temperature and piezoresistive sensing for human motion. Our findings stand out as a new tool to prepare functional superhydrophobic materials with electrical conductivity and electrothermal effect for various potential applications.
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MATERIALS LETTERS
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2019
·
IF 3.019
Longzhu Zheng,Xiaojing Su,Xuejun Lai,Wanjuan Chen,Hongqiang Li,Xingrong Zeng
Conductive superhydrophobic cotton fabric was fabricated by assembling carboxylated and aminated multiwalled carbon nanotubes and modifying with polydimethylsiloxane. The cotton fabric possessed superhydrophobicity with a CA of 162°, and was successfully applied in oil-water separation with high separation efficiency and great reusability. Additionally, the conductive fabric-based pressure sensor exhibited stable and regular responses in human motion detection including finger bending, wrist movement, walking and running. Owing to the excellent water repellency of the fabric, the pressure sensor could work even under wet and humid conditions, which may pave a novel way to further broaden application field in high-performance electric sensors.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
·
IF 3.131
Tingting Wang,Hao Wang,Tongtong Wang,Jin Xu,Qingping Ke
A soft template, polyethylene glycol (PEG), was used for the preparation of polydimethylsiloxane (PDMS) oil absorbent. The preparation can be finished does not involve special equipment that normally required by conventional duplicating processes base on hard template. PEG/PDMS ratio, the key synthesis parameter, was systematically optimized in terms of both oil capacity and mechanical strength . Compared with previously reported PDMS materials developed using hard template, the optimized absorbents have comparable capacities of various oils in the range of 4.5–21.5 g/g, faster absorption rate and significantly improved mechanical strength with elongation at break significantly enhanced from 60 to 97% to greater than 200%. These improved properties can be explained by the regular distribution of macropore size that exhibits a signature twin-head peak dominated at about 120 and 200 μm. That fractional distribution is not affected by increased PEG/PDMS ratio until a structural collapse occurs at the ratio of 6 suggests specific and uniform interactions between PEG soft template and PDMS. Also examined are recyclability, anti-deformation property and oil-keeping performance, which are of practical importance under realistic storage and application conditions were also examined.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Maiping Yang,Chi Jiang,Weiqu Liu,Liyan Liang,Yankun Xie,Hongyi Shi,Fengyuan Zhang,Ke Pi
Despite the existing efforts, developing a versatile and less-harmful method is of difficulty for the preparation of durable superhydrophobic surfaces. Herein, a mild and water-rich approach is proposed to obtain fluorine-free robust superhydrophobic materials, which is prepared using composite solutions of polydimethylsiloxane (PDMS) and titanium dioxide (TiO 2 ) to reduce the usage of organic solvents. With the optimized PDMS solution/TiO 2 aqueous sol mass ratio (2:8), the coated cotton fabric possessed a water contact angle (WCA) of 156.9° and a shedding angle of 6.8°. The resulting superhydrophobic cotton fabric (SCF) also performed well under various harsh conditions. Furthermore, the SCF not only exhibited excellent anti-staining ability, but also could degrade organic pollutant under UV irradiation owing to its photocatalytic activity. More importantly, the SCF could be used repeatedly for oil-water separation and water purification without significant loss in its superhydrophobicity, which provide the prospect of employing in the field of environmental protection. The composite coating can be utilized on different substrates including PET fabric, non-woven fabric and sponge to impart superhydrophobicity to their surfaces. Overall, our work provides a facile, timesaving and less-harmful approach for fabricating multifunctional superhydrophobic fabrics, which have significant advantages in self-cleaning, outdoors and water treatment application.
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Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 7
·1496-1506
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IF 5.344
Jianhua He,Yun Yang,Xiaoju Zhou,Wenli Zhang,Jianping Liu
Targeting drug delivery to macrophage/foam cells is challenged owing to the poor cell permeability and fluidity resulting from the massive accumulation of intracellular cholesterol in atherosclerosis (AS). Discoidal reconstituted high-density lipoprotein (d-rHDL) has been well regarded as a potential drug delivery system for AS by virtue of its plaque-targeting and cholesterol removal abilities, while the latter is compromised by the high activation energy of cholesterol efflux. It is reported that a low concentration of β-cyclodextrin (β-CD) can function as a cholesterol shuttle to promote cholesterol efflux from cells to the extracellular acceptors (cholesterol sink, such as HDL particles), but it is still unknown whether the combination of β-CD with a drug-loaded d-rHDL can function as a shuttle/sink model to promote the remodeling and drug release of the d-rHDL carrier after accelerating the cholesterol efflux. Furthermore, it is interesting to investigate whether enhanced cholesterol efflux can improve the cellular drug uptake by restoring the permeability and fluidity of the cell membrane. Here, simvastatin-loaded d-rHDL (ST-d-rHDL) was combined with different concentrations of β-CD. Compared with ST-d-rHDL alone, the cholesterol removal ability of ST-d-rHDL combined with 0.5 mM of β-CD increased by 31-fold after incubation for 6 h and the cumulative drug release of ST-d-rHDL increased by two-fold during the initial 1 h in an acellular mimetic system. In macrophage/foam cells, 0.5 mM of β-CD showed superior promoting effects in the cholesterol removal ability and remodeling of ST-d-rHDL compared to 0.1 mM of β-CD. The high concentration of β-CD at 2 mM displayed a low efficiency for accelerating cholesterol efflux, which might function as a cholesterol sink rather than a cholesterol shuttle. Moreover, the permeability and fluidity of the cell membrane were improved by combining 0.5 mM of β-CD with ST-d-rHDL, which exhibited an enhanced cellular drug uptake and inhibiting effect on the intracellular lipid deposition and secretion of inflammatory cytokine. Collectively, combination of β-CD and ST-d-rHDL as a shuttle/sink model could enhance cholesterol efflux and drug uptake to suppress inflammation in macrophage/foam cells.
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高影响因子
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