JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 11
·50038
·
IF 2.52
Linjiong Zhang,Lianfang Feng,Xueping Gu,Cailiang Zhang
Oil spills and organic chemical leakage have caused serious environmental problems, calling for highly effective adsorbents at low cost. Superelastic and hydrophobic-oleophilic modified melamine foams with ultralow amounts of well-dispersed graphene were prepared via dip-coating. The composite foams showed high selectivity for adsorbing various organic chemicals from water and could be regenerated easily. Moreover, excellent adsorption capacity ranging from 80 to 170 times its own weight was found depending on the density of organic chemicals. These coated foams show great potential for continuous oil/water separation and oil fume removal.
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
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Yuqian Xiang,Youyou Pang,Xiaomei Jiang,Jie Huang,Fengna Xi,Jiyang Liu
Absorbent materials integrated with superhydrophobicity, superoleophilicity and flame-retardancy are highly desired in the adsorption/removal of flammable oils/organic compounds as well as reducing the risk of fire and explosion. Here, one-step fabrication of novel superhydrophobic and superoleophilic sponge with outstanding absorbency and flame-retardancy was presented. Using raw melamine (ME) sponge as the supporting matrix, the formation of polydopamine (PDA) nanoaggregates via in-situ self-polymerization of high-concentrated dopamine and the covalent grafting of hydrophobic n -dodecylthiol (DT) onto PDA were combined in a feasible alkaline water/ethanol medium. As investigated by scanning electron microscopy (SEM) and X-ray energy-dispersive spectroscopy (EDS), the as-prepared ME/PDA/DT sponge possessed hierarchical structure with submicron PDA nanoaggregates containing DT motif (low surface energy) on 3D interconnected porous network. It exhibited superhydrophobic (water contact angle 157.7°) and superoleophilic (oily/organic solvent contact angle 0° properties. Owing to the highly porous structure, superhydrophobic property, chemical and mechanical stability, the ME/PDA/DT sponge exhibited outstanding absorbency properties of oily organic solvents including fast absorption kinetics, high absorption capacity, and easy reusability. Also, the ME/PDA/DT sponge could be used for one-line continuous organic solvent/water separation. More interestingly, the ME/PDA/DT sponge demonstrated improved flame-retardant property as compared to the intrinsic flame-retardant nature of the raw melamine sponge. Consequently, the risk of fire and explosion was expected to reduce when the fabricated sponge was used as an absorbent for flammable oils and organic compounds. The ease of the one-step superhydrophobic/superoleophilic modification and the promising feature of the obtained materials exhibit great potential for application in oils/organic solvents clean-up.
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 MATERIALS SCIENCE
·
2019
·Vol. 54
·期 20
·13358-13367
·
IF 3.442
Zhang Rui,Wu Yuanpeng,Zhang Haiyan,Xue Shishan,Guo Meiling,Zhang Tao
In this work, we present a hydrophobic–oleophilic Fe foam for oil–water separation. Hydrophobic–oleophilic Fe foam was fabricated simply through dip-coating with n -dodecyl mercaptan. The morphology, chemical composition and water contact angle of the Fe foam were characterized. The Fe foam could absorb a variety of oils, such as diesel, toluene, xylene, cyclohexane, dodecyl methacrylate, crude oil, 1,2-dichloroethane, hexane and chloroform, these oils could be underwater or on water surface, and it exhibited excellent durability, verified by the high separation efficiency (more than 98.8% for a cyclohexane–water mixture) after reusing for 48 times. Furthermore, oil collection with the Fe foam could be controlled remotely using external magnetic field, and the Fe foam displayed high flux, good anti-corrosion and wear resistance. The simple and low-cost fabrication method enabled the Fe foam to be a promising candidate for large-scale oil–water separation and for remotely controllable water purification.
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
Polymer Chemistry
·
2014
·Vol. 5
·期 20
·5942-5948
·
IF 5.368
Gang Wang,Zhixiang Zeng,Xuedong Wu,Tianhui Ren,Jin Han,Qunji Xue
Oil spills not only result in extensive economic losses but also damage marine ecological environments. A series of materials with special wettability are investigated for the separation of oil–water mixtures. However, few studies have investigated the adsorption behaviors of sponges to crude oil (high viscosity). To solve the restrictions of high viscosity oil absorption, low oil absorption rate and oil–water emulsion separation of oil absorption materials, a superhydrophobic and superoleophilic polyurethane (PU) sponge was synthesized via an environmentally friendly surface grafting of a polymer molecular brush. This grafted sponge exhibited high oil absorption rate because of the expansion in oil and collapse in water of the polymer molecular brushes. The grafted PU sponge also possessed high absorption capacity (23 times of the self weight), high oil retention (93%), high mechanical strength and good recyclability (more than 400 times). We anticipate that the grafted sponge will have numerous applications and will show outstanding performance on a larger scale. A quick clean-up of marine spilled oil/organic solvents and the separation/recycling of an oil–water mixture/emulsion can also be achieved.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2016
·
IF 2.632
Pihui Pi,Kun Hou,Xiufang Wen,Shouping Xu,Jiang Cheng,Guilong Xu,Shuangfeng Wang
A superhydrophobic/superoleophilic cotton fabric was fabricated by a facile one-step dip-coating method using a crosslinkable fluorinated copolymer material-Poly(methyl methacrylate-co-butyl acrylate-co-hydroxyethyl methacrylate-co-perfluoroalkylethyl methacrylate-co-stearyl methacrylate-co-methacrylisobutyl polyhedral oligomeric silsesquioxane) (P(MMA-BA-HEMA-FMA-SMA-MAPOSS)). The copolymer was synthesized using a conventional solution free radical polymerization. Cotton fabric was dip-coated in tetrahydrofuran (THF) solution of the copolymer and curing agent with –NCO groups. The coated cotton fabric has a water contact angle above 150° and oil contact angle of 0°, showing both superhydrophobicity and superoleophilicity. Furthermore, the cotton fabric could keep its superhydrophobic property even after ultrasonic treatment in ethanol or thermal treatment, as well as for acidic or alkaline liquids. The coated cotton fabrics were used to separate various oil-water mixtures with separation efficiency all above 96%. Additionally, the cotton fabrics still kept high separation efficiency above 98% after 50 separation times for n-hexane/water mixture. These suggest that the coated cotton fabric possesses robust superhydrophobic property and excellent oil-water separation performance, and can finely meet the urgent request in oil-water separation.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Tianlong Yu,Shixiang Lu,Wenguo Xu
The coral-like bismuth coated iron mesh (BCIM) was fabricated via chemical etching, immersion replacement and anneal. The resulting sample exhibited remarkable superhydrophobic/superoleophilic property with water contact angle of 163° and oil contact angle almost 0°. Visually, the water and hexane droplet could separately roll off and penetrate into the BCIM surface. Various oil-water (hexane, benzene, toluene, kerosene, bean oil, chloroform, tetrachloride, and water) separations were performed to investigate the separating performance. The initial separation efficiency of hexane-water reached 98.7% and it could maintain over 96% after 20 runs. The BCIM could also act as a scavenger to eliminate the floating or underwater oil. Moreover, it exhibited marvel buoyancy, desired stability and wear resistance.
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
APPLIED SURFACE SCIENCE
·
2015
·
IF 2.711
Zhi Liu,Jiang-hui Zhao,Peng Liu,Ji-huan He
Superhydrophobic–superoleophilic fibrous polymethyl methacrylate (PMMA) membranes were prepared by electrospinning technique. The membranes exhibited a high water contact angle up to 153.9° and nearly zero oil contact angle. This super wettability property is attributed to hierarchical macro- and nanostructure on surface of PMMA membrane and can be conveniently tuned by adjusting the weight ratio of binary solvent of N,N-dimethylacetamide and acetone. Resultant fibrous PMMA membranes with superhydrophobic–superoleophilic property can be used in water treatment. This facile one-step strategy shows an alternative approach to produce special wettability surface and will benefit this material.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Taiheng Zhang,Chongyang Zhang,Guoqing Zhao,Caifeng Li,Lukai Liu,Jingang Yu,Feipeng Jiao
Developing an efficient oily wastewater treatment method has become an urgent problem due to the increasing severe situation of oil pollution. Here, the s-kaolin particles modified PAN composite membrane with superhydrophobicity and superoleophilicity was successful fabricated through electrospinning. The composite membrane exhibited good oil adsorption capacity to different kinds of oil and organic solvent , and the maximum absorption capacity achieve 37.2 times of its own weight. Moreover, the composite membrane can efficient separate immiscible oil/water mixtures with excellent separation efficiency (above 95 %) and high separation flux (1960.1 L h −1 m −2 ). Due to tolerance to most solvents of the PAN, the composite membrane possess good stability after adsorbed oil and separated oil and water mixtures (more than 10 cycles). Furthermore, the composite membrane shows considerable separation efficiency toward different kinds of water-in-oil emulsion under impressed pressure. The excellent separation ability, high porosity and good recyclability of the composite membranes allowed their potential application in practical oily wastewater treatment in environmental protection.
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
AICHE JOURNAL
·
2019
·Vol. 65
·期 6
·e16596
·
IF 3.463
Xuke Zhang,Hui Li,Weizhen Miao,Qin Shen,Jing Wang,Donglai Peng,Jindun Liu,Yatao Zhang
The novel functional superwettable materials for high-efficiency oil/water separation are urgently required due to oil pollution in water body caused by oil tanker accidents, seabed oil production, and oil from refineries and petrochemical plants. Here, the superhydrophobic and superoleophilic zeolitic imidazolate framework-L (ZIF-L) mesh with antimicrobial effect was successfully fabricated by in-situ growth, composed of vertically ZIF-L with micro-/nanodagger-like structure and exhibited the water contact angle of 155.4 ± 1.8° and the oil contact angle of 0° in air. Furthermore, ZIF-L was verified to have an excellent antimicrobial activity, which endowed ZIF-L mesh with good antimicrobial performance. ZIF-L mesh provided a permeation flux with 1.75 × 10 5 L m −2 hr −1 and 99.7% separation efficiency after 10 cycles operations for water mixtures with isooctane and presented optimal stability. Accordingly, the results demonstrated that ZIF-L as a new material shows an attractive applied promise for oil/water separation in industry.
研究领域:
材料科学
·
环境科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Jingcheng Du,Changyuan Zhang,Hong Pu,Yufeng Li,Saimeng Jin,Luxi Tan,Cailong Zhou,Lichun Dong
Oil/water separation is an urgent topic because the frequently occurred oil leakages and increasing discharge of oily wastewater. The 3D metal foams with special wettabilities are promising oil/water separation materials owing to their outstanding properties. Herein, we fabricated a HKUST-1 MOFs decorated copper foam using a facile template-sacrificial method for oil/water separation. The as-prepared copper foam possessed good superhydrophobicity under broad pH and saline conditions. Its oil adsorption capability was larger than 150% for all the chosen oils and the oil/water separation efficiency of the foam for various oil/water mixture was larger than 96%. Furthermore, although the wettability decreased to hydrophobic state after 30 cycles of mechanical abrasion, the separation efficiency of the foam kept above 97%, showing good repeatability. Results demonstrated that the distinctive 3D structure of copper foam contributed the excellent durability to mechanical abrasion.
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
MRS Advances
·
2018
·Vol. 4
·期 7
·359-367
·
IF 0
Chen Chaolang,Weng Ding,Mahmood Awais,Wang Jiadao
In this study, a superhydrophobic and superoleophilic stainless mesh coated with polytetrafluoroethylene/silicon dioxide (PTFE/SiO 2 ) was fabricated through electrostatic self-assembly method followed by sintering treatment. The PTFE was utilized to construct low-surface-energy surface and the SiO 2 nanoparticles were added to enhance its surface roughness. The as-prepared stainless mesh exhibited desirable superhydrophobicity and superoleophilicity with a water contact angle of 152° and oil contact angle of 0°. The coated stainless mesh could separate a variety of oil/water mixtures with high efficiency and it also exhibited good recyclability. Moreover, the corrosion-resistance of stainless mesh was greatly improved by coating it with PTFE. The thermogravimetric analysis (TGA) measurements showed that the coated mesh could withstand high temperature of up to 430°C, indicating excellent thermal-resistance. It is believed that this ultra-robust stainless mesh would have significant potential applications in industry.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
ENVIRONMENTAL TECHNOLOGY
·
2022
·
IF 3.475
Juxiang Yang,Yuan Jia,Beibei Li,Jiao Jiao
To overcome the problems of frequent leakage accidents during oil exploitation, a superhydrophobic and superoleophilic porous MS/PDA/DT sponge was successfully prepared via mild solvent evaporation method, and a polydopamine assisted surface coating of 1-dodecanethiol (DT) on a melamine sponge (MS) substrate. Surface structure and performance of the MS/PDA/DT sponge were characterized by Scanning Electron Microscope (SEM), Fourier transform infrared spectrometer (FTIR), and Video Optical Contact Angle (CA) metre. The results showed that the as-prepared MS/PDA/DT sponge has a high-water contact angle (WCA) of 147.2°, which is probably attributed to both the rough surface derived from in situ growth and the low surface energy due to grafting of hydrophobic 1-dodecanethiol. The durability of the as-constructed MS/PDA/DT sponge was studied by repeated abrasion tests. After 50 abrasion cycles, the superhydrophobicity of the MS/PDA/DT sponge good mechanical durability. The MS/PDA/DT sponge can effectively absorb oil with an absorption capacity of up to 24 times its weight. The superhydrophobic and superoleophilic MS/PDA/DT sponge has the potential as a promising adsorbent for oil/water separation.Highlights
The MS/PDA/DT sponge was prepared via the mild solvent evaporation method.The contact angle of the MS/PDA/DT sponge was 147.2o.The adsorption capacity of the MS/PDA/DT sponge was 24 times their weight.The cost-efficient, environmentally friendly porous materials show high oil/water separation efficiency.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）