ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Zhangdi Li,Qiong Tian,Jicheng Xu,Shouzhen Sun,Ying Cheng,Fengxian Qiu,Tao Zhang
Effective cleanup of viscous crude oil spills remains a persistent and crippling challenge. Herein, this work presents a Joule-heated superhydrophobic flower-like Cu8(PO3OH)2(PO4)4·7H2O-coated copper foam (SHB-CF@CP) for rapid cleanup of viscous crude oil spills via a facile strategy. The SHB-CF@CP shows outstanding water repellency and excellent stability of hydrophobicity in harsh environments. Due to the high electrical conductivity and thermal conductivity, it requires lower power energy consumption (less than 1 V of voltage input) to raise the temperature significantly, which dramatically reduces the viscosity of crude oil (from ∼2 × 105 to ∼60 mPa s) and then increases the oil absorption rate, effectively avoiding the poor mobility and ineffective absorption of viscous crude oil. Notably, the SHB-CF@CP can achieve continuous and quick cleanup of crude oil under in situ pumping force. The high-performance Joule-heated SHB-CF@CP sorbent with a strong porous skeleton, corrosion resistance, and low predicted operational costs holds a promise of promoting its practical applications in the cleanup of intractable and large-area viscous oil spills.
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
JOURNAL OF NANOPARTICLE RESEARCH
·
2013
·Vol. 15
·期 8
·1-7
·
IF 2.175
Cui Hongtao,Zhao Yunan,Ren Wanzhong,Liu Yan,Wang Minmin
First aqueous non-silica foams, solely stabilized by CoOOH nanoparticles, were prepared by a new colloidal strategy. Highly water-soluble CoOOH nanoparticles with size of 1.5 nm were produced from the reaction between Co(OH) 2 nanosheets and ammonia. The foams were formed through the hand-shaking of the high-concentration colloid formed by the redisolving of CoOOH nanoparticles in water. The stability of the foams was attributed to the reduction of surface tension induced by the hydrophilic CoOOH particles and the support of particulate network in the void between bubbles. These two factors also provided resistance for the bubble collapse during the evaporation of solvent, resulting in the keeping of the original foam morphology after drying and the formation of a hierarchically hollow structure of CoOOH. Herein, we proved that the highly hydrophilic nanoparticles also can stabilize liquid foams. This conclusion is different from the classic theory on foams, which may provide new insight for foams and also a pathway for the preparation of inorganic hollow structure.
研究领域:
材料科学
·
纳米技术
·
胶体化学
·
结构功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 3
·51521
·
IF 3.125
Shiqin Deng,Chunxia Zhao,Longbin Zhu,Haoran Huang,Yuntao Li,Dong Xiang,Hui Li,Yuanpeng Wu,Shijie Huang
Superhydrophobic polymeric foams, with good thermal stability and high-recycling capacity to remove oil from oily wastewater, are highly desirable for current oily wastewater purification. Herein, poly (styrene-acrylic acid 2,2,3,4,4,4-hexafluoro-butyl ester-divinylbenzene) foam with porosity as high as 99.27% has been prepared through high-internal phase emulsions. Therein, poly (cyclotriphosphazene-co-4,4′-sulfonyldiphenol) microspheres, and Span80 act as co-emulsifier to stabilize the emulsion system. The as-prepared foams exhibited super hydrophobicity with a water contact angle of 150.3° and thermal stability. Additionally, the oil adsorption capacity of the porous material could reach up to 25.6–53.4 times its mass with accessible and high-recycling capacity. These aforementioned outstanding properties make our superhydrophobic foam hold potential applications in 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
RSC Advances
·
2019
·Vol. 9
·期 31
·17543-17550
·
IF 3.049
Chuan-ming Yu,Xiao-hui Zhuang,Sheng-wei Zeng,Qi-xing Dong,Zhan-xin Jing,Peng-zhi Hong,Yong Li
In this paper, poly(styrene-divinylbenzene) foams were synthesized using a high internal phase emulsion (HIPE) technique with Span 80 and with 900 °C calcined oyster shell powder as a co-emulsifier, 2,2′-azobisisobutyronitrile (AIBN) as an initiator and deionized water as the dispersing phase. SEM images revealed that the materials possess a hierarchical porous structure of nano/micro size, which resulted in saturated oil adsorption in only half a minute. The dispersing phase amount was investigated for its effect on adsorption. The optimized foams have 24.8–58.3 g g−1 adsorbencies for several organic solvents, and they demonstrated superhydrophobicity and excellent oleophilicity with the water contact angle (WCA) even close to 149° and oil contact angle approaching 0°. Moreover, the foams displayed high oil retention under pressure. The adsorption–centrifugation cycling results indicated high repeatability of the recovered foams. All of these features predicted the potential applications of superhydrophobic foams in oil–water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Xiaoyang Yu,Ning Jiang,Xuyang Miao,Ruowen Zong,Youjie Sheng,Changhai Li,Shouxiang Lu
The extreme instability of aqueous foams on the ethanol layer is an important issue to consider in the application of fire-fighting foams. We attempt making stable aqueous foams on the ethanol layer by using sodium dodecyl sulfate (SDS) as the foamer, with fluorosurfactant (FC1157) and xanthan gum polymers (XG) as the stabilizing agents. The surface properties, foam stability, and fire extinguishing performance of our studied systems were investigated respectively. The results show that ethanol destroys aqueous foams by dehydration and polar ethanol has a more significant defoaming effect than non-polar heptane. XG and FC1157 can inhibit the adverse effects of ethanol on foam stability. The addition of FC1157 improves the stability of the foam films and slows down the ethanol-induced dissolution of foams. XG polymers tend to form a gel-like membrane at the foam/ethanol interface, minimizing the mass transfer between foam and ethanol. The lifetime of foam stabilized by FC1157/ XG is much longer than that of foam stabilized by FC1157 or XG alone in the presence of ethanol. Foams can go from unstable foams to foams being stabilized by both XG membrane and FC1157 synergistically. As a result, the synergism of FC1157 and XG in stabilizing foams significantly enhances the fire extinguishing performance of foam.
研究领域:
化学工程
·
消防安全
·
材料科学
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 7
·2863-2871
·
IF 8.1
Lu Runzhi,Fang Zizheng,Jiang Yongbo,Zhao Qian
Ice templating that uses water as a green porogen has emerged as an eco-friendly and promising approach to fabricating porous materials. However, foams prepared from aqueous solutions are typically water-intolerant owing to their hydrophilic nature. Hydrophobic foams can also be prepared through the freezing of dispersions, but extra organic solvents are often required, making it environmentally unfriendly. Herein, we develop photo-cross-linking of ice templated emulsions to produce multifunctional porous materials based on emulsifier-free photosensitive emulsions. The whole porogenation process is relatively fast (within several minutes) without freeze-drying, facilitating the roll-to-roll continuous production of porous polymers. The material versatility can be expanded with different formulations, including soft foams with high stretchability, rigid materials providing tunable shape memory properties, and hierarchical porous ceramics enabling thermal insulation. This approach is environmentally friendly and economically attractive, and the principle can be extended to diverse precursors for the production of functionalized porous materials.
研究领域:
材料科学
·
化学工程
·
环境科学
·
聚合物科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 104
·期 11
·5529-5536
·
IF 3.784
Li Zeng,Faguo Wang,Sumei Han,Moying Li,Siyang Tu,Qipeng Lu,Wenbin Cao
Oil/water separation is a worldwide concern because of the emissions of oil contaminated wastewater and increasing number of oil spill accidents in recent years. Materials with superhydrophobicity and superoleophilicity provide a new strategy to solve such problems, which allow organic solvents to pass through freely while repelling water. Herein, the porous foams with superhydrophobicity and superoleophilicity were prepared successfully through a facile low-temperature sintering method, in which the halloysite nanotubes (HNTs), polyvinylidene fluoride (PVDF) and sodium chloride were used as the raw materials. Among them, HNTs constructed the rough surface in micro-/nano-scale and sodium chloride served as the sacrifice template. The superhydrophobic surface was achieved via the synergistic effect between the rough surface and PVDF with the low surface energy. The foam showed good water repellency (water contact angle, CA: 156.0 ± 0.1°) and superoleophilic properties, which could selectively absorb organic solvents from the mixture solution with water. Moreover, the foam exhibited high separation efficiencies for a variety of oil/water mixed solutions with excellent cycling stability, which make it a promising material for practical oil/water separation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
·
2021
·
IF 4.577
Liru Ma,Tao Liu
The application of ultra-dry CO 2 -in-water (C/W) foams for the displacement of water-sensitive reservoirs can achieve the double benefits of CO 2 sequestration and enhanced oil recovery (EOR). In this work, ultra-dry C/W foams with 4% v/v water were generated by Cocamidopropyl betaine (CAPB), Nonionic poly(acrylamide) (NPAM) and hydrophobic or hydrophilic nanoparticles (NPs) with different specific surface areas. The foam prepared with hydrophilic NPs exhibited the optimal temperature resistance. Rheological experiments of solutions manifested the characteristics of shear thinning and confirmed the viscoelastic network structure (gel-like behavior). Interfacial tension (IFT) mainly affected the possibility of foam formation but was uncorrelated with foam stability. The density distribution, interfacial shear viscosity and interfacial thickness that were challenging to measure experimentally were obtained through dissipative particle dynamics (DPD) simulations. The results demonstrated that NPs could strengthen the interfacial film by forming a viscous network and generating steric resistance, thus enhancing the foam stability.
研究领域:
化学工程
·
材料科学
·
石油工程
✓ 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）