CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2022
·
IF 3.898
Taoyan Mao,Runhui Xiao,Peng Liu,Jiale Chen,Junqiang Luo,Su Luo,Fengwei Xie,Cheng Zheng
Nowadays, oil contamination has become a major reason for water pollution, and presents a global environmental challenge. Although many efforts have been devoted to the fabrication of oil/water separation materials, their practical applications are still hindered by their weak durability, poor chemical tolerance, environmental resistance, and potential negative impact on health and the environment. To overcome these drawbacks, this work offers a facile method to fabricate the eco-friendly and durable oil/water separation membrane fabrics by alkaline hydrolysis and silicon polyurethane coating. The X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy results demonstrate that silicon polyurethane membrane could be coated onto the surface of hydrolyzed polyester fabric and form a micro-/nano-scaled hierarchical structure. Based on this, the modified fabric could have a stable superhydrophobic property with a water contact angle higher than 150°, even after repeated washing and mechanical abrasion 800 times, as well as chemical corrosion. Moreover, the modified fabrics show excellent oil/water separation efficiency of up to 99% for various types of oil–water mixture. Therefore, this durable, eco-friendly and cost-efficient superhydrophobic fabric has great potential in large-scale 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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Zhipeng Deng,Kun Lv,Gang Zhu,Xuezhi Zhao,Yujun Feng
Efficient separation of oil–water mixtures, particularly homogeneous and stable emulsions, has always been an industrial challenge. Herein, we report a facile, cost-effective procedure for fabricating superhydrophobic melamine sponges using a single solution–immersion process. The modified sponge has stable superhydrophobicity owing to the synergy of triple hydrophobic mechanisms with a maximum water contact angle of 158°. As an absorbent, the modified sponge block exhibits high porosity, outstanding absorption capacity, excellent mechanical properties, and superior physical and chemical stability, enabling its use for the separation of stratified oil–water mixtures via repeated absorption–extrusion processes with a separation efficiency of nearly 100%. Furthermore, as a filter, the crushed, modified sponge powders exhibit a demulsification efficiency ranging from 97.65 to 99.33% for the separation of ideal water-in-oil emulsions under gravity. Finally, the feasibility of these sponges for oilfield applications is established through the demonstration of the continuous separation of an emulsion of brine in crude oil using the modified sponge powders in conjunction with an in-house built apparatus. This work may open a viable pathway for the efficient separation of both stratified and emulsified oil–water mixtures via wettability, and provide a novel strategy for the reuse of waste sponges.
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
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2023
·Vol. 34
·期 10
·3247-3259
·
IF 3.4
Maoyuan Pu,Liqin Cao,Li Zhang
The high internal phase emulsion (HIPE) template method is widely used to prepare porous functional materials because of its designable emulsion components and adjustable porosity. Herein, amphiphilic gelatin (GE) as the sole emulsion stabilizer, and no additional emulsifiers were added to prepare a stable GE-HIPE membrane and its zeolitic imidazolate framework-67 (ZIF-67) hybrid composite membrane. The ZIF-67/GE-HIPE composite membrane has good lipophilicity by constructing dual micro-nano structures by HIPE template and in situ growth of ZIF-67. When ZIF-67 was grown in situ, the water contact angle (CA) increased from 58.1 ± 2° for the GE membrane to 121 ± 1.9° for ZIF-67/GE-HIPE composite membranes. Besides, the minimum CA of organic solvent is 4.5 ± 0.7° ( n -hexane). The ZIF-67/GE-HIPE composite membranes exhibit good O/W emulsion separation properties and adsorption removal ability of organic pollutants. After 10 times of recycling emulsion separation, the emulsion separation capacity of the membrane was still greater than 99.4%. The lipophilic dye removal rate of the ZIF-67/GE-HIPE composite membrane was 2.37 times higher than that of GE-HIPE, and the adsorption process conforms to the pseudo-second-order model. Thus, this work provides a strategy for the preparation of GE-based hydrophobic modified membrane and also presents a typical treatment of adsorption-separation of lipophilic substances.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Congcong Cui,Hong Chen,Linhan Mao,Yanwen Xiao,Qiaoyu Huang,Zhaoxia Chen,Yuhong Zhang
With the rapid development of industry and the increasing discharge of oily wastewater, there is a growing interest in superhydrophobic materials for oil-water separation and water pollution remediation. At the same time, there is an urgent need for materials capable of oil-water separation and wastewater degradation. In this paper, superhydrophobic photocatalytic cotton fabrics were prepared by introducing zinc oxide nanoparticles (ZnO NPs) on pristine fabrics (PF) to obtain a micro/nano-rough structure, octadecylamine (ODA) to provide a low surface energy, and epoxy resin (ER) used as an adhesive to enhance the adhesion between the ZnO NPs and the fabric. The prepared ODA-ZnO-ER@PF has excellent superhydrophobicity with a water contact angle (WCA) of 156.5° and self-cleaning ability. Due to its good photocatalytic properties, it can basically degrade methylene blue (MB) and rhodamine B (RB) in water after 12 h of UV irradiation. In addition, ODA-ZnO-ER@PF has excellent mechanical properties and maintains good superhydrophobicity after mechanical abrasion, ultrasonic washing, tape-peeling, UV irradiation and acid or alkali immersion. Gravity-driven oil-water separation simulation experiments indicated that ODA-ZnO-ER@PF has good oil-water separation efficiency and recyclability. This superhydrophobic, photocatalytic and mechanically durable material shows promising applications in the treatment of oil-water pollutants.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Dong Wu,Hao li,Guangxing Pan,Mi Wang,Wen Yu,Gui-Gen Wang,Jiaheng Zhang
Water pollution from organic oily solvents and dyes is a major global problem. While some wettable materials exist for oily pollutants, few can effectively separate different oil–water emulsions and dyes. To address this problem, we developed a smart citric acid-crosslinked bamboo powder-coated membrane (CBM) with approprite surface roughness and switchable wettability. The CBM membrane is superhydrophobic in oil and superoleophobic in water, making it highly effective in separating oil–water emulsions and dyes. The membrane can efficiently separate various oil–water emulsions, including crude oil-in-water emulsions, with a separation efficiency of 99.76 % and a high flux of 1756 L/m 2 /h. It also adsorbs anionic (e.g. Congo red) and cationic (e.g. methylene blue) dyes in wastewater, with an adsorption rate of 99.45 % after multiple cycles. The membrane can simultaneously separate oil-in-water emulsions and remove dyes from water, facilitating high-value utilization of biomass waste and offering great promise for addressing global water pollution from oily organic solvents and dyes.
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
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Jianfu Wang,Yi Lin,Wei Bing,Huichao Jin,Jie Zhao,Limei Tian
Superhydrophobic materials can solve the problem of oil pollution in water resources. In this paper, superhydrophobic PDMS-SiO 2 with macro-micro-nano multi-level structures was prepared by impregnation method. The superhydrophobic PDMS-SiO 2 material has good physical and chemical stability, and retains its superhydrophobicity after sandpaper abrasion, tape peeling, water immersion, acid or alkali immersion, and high temperature baking. The superhydrophobic PDMS-SiO 2 material has a high oil-water separation efficiency, with the highest oil-water separation efficiency reaching more than 99%, and the oil-water separation efficiency of different oils all exceeding 96%. The preparation of superhydrophobic PDMS-SiO 2 material is simple, inexpensive and environmentally friendly, which can achieve fast and large-area preparation, with good engineering application prospects.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 57
·32522-32532
·
IF 2.936
Hong Lei,Yao Wu,Sen Yang,Chunfang Fu,Jichuan Huo
Preparation of new materials from biomass is good for sustainable development. Carbon/carbonaceous foams (CFs), as important materials widely applied in both military and civil use, are usually made from nonrenewable materials at high temperature (usually over 1000 °C) and high pressure (at MPa magnitude). Although some biomass raw materials have been used, there is still a fascinating issue waiting to be discussed. That is, what kind of biomass would be suitable for making CFs, or what the biggest challenge might be if these raw materials are used. Herein, a CF with advanced compressibility was made from starch with a simple and energy efficient strategy. The product can be made at much lower temperature (below 500 °C) and pressure (∼190 Pa) than conventional strategies. The understanding of the conversion mechanism provides inspiration for the conversion of other biomass into value-added carbonaceous materials. Due to the presence of reactive groups on the surface of the as-prepared CF, the product can be further modified or used as a substrate to prepare composites for catalysis, phase change energy storage, sensors, water purification, and so on. In this work, its potential application in oil/water separation was demonstrated.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Cui Congcong,Chen Di,Mao Linhan,Xiao Yanwen,Huang Qiaoyu,Chen Zhaoxia,Qi Xiaoyun,Zhang Yuhong
The frequent occurrence of oil spills in recent years has led to serious contamination of water resources, and materials with superhydrophobic surface properties have attracted much attention for crude oil recovery and water contamination remediation. However, the fragile robustness of superhydrophobic materials greatly hinders their practical applications. Herein, we prepared the robust, photocatalytic superhydrophobic material of SH-ZnO-PDMS@fabric by a simple two-step immersion method. Zinc oxide nanoparticles (ZnO NPs) provided the rough surface structure, and fluorine-free dodecyltrimethoxysilane (DTMS) provided the low surface energy. Polydimethylsiloxane (PDMS) was introduced as a binder to strengthen the force between the nanoparticles and the fabric. The cotton fabric showed excellent superhydrophobicity with a water contact angle (WCA) range of 146.9–156.6°. The methylene blue (MB) in water was basically degraded after 12 h of exposure to UV lamp, manifesting that the cotton fabric had excellent photocatalytic property. The cotton fabric also showed excellent self-cleaning and antifouling properties. Importantly, SH-ZnO-PDMS@fabric maintained superhydrophobic properties after mechanical abrasion, ultrasonic washing, UV irradiation, and acid/alkali immersion. The prepared superhydrophobic materials can be repeatedly used to separate various oil–water mixtures due to their superhydrophobic and recyclable properties. This versatile, efficient, and simple strategy has good application prospects in water pollution remediation and oily wastewater treatment.
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
·
2024
·
IF 8.1
Xiaohui Wang,Xinmei Li
Developing multifunctional separation membranes, especially composite separation membranes that are corrosion-resistant, fouling-resistant, and easy to collect, has become a new challenge to treating oily wastewater in complex environments. Therefore, superhydrophobic magnetic membranes composed of polystyrene/poly(acrylonitrile)-poly(vinylidene fluoride)/poly(dimethylsiloxane)-iron oxide/titanium dioxide nanoparticles (PS/PAN-PVDF/PDMS@Fe 3 O 4 /TiO 2 ), which possess exceptional corrosion resistance and UV absorption properties, were fabricated through the process of electrospinning. Controlling the doping ratio of Fe 3 O 4 /TiO 2 , composite membranes with excellent superhydrophobicity (156.9°), mechanical properties (3.67 MPa and 75.93 %), and thermal stability (330 °C) were obtained. The membrane demonstrates outstanding corrosion resistance (WCA > 150°) even after being immersed in various corrosive solutions for 120 h. Under visible-ultraviolet irradiation, the membrane has excellent UV absorption and exhibits a significant red-shift phenomenon, providing a certain degree of resistance to fouling. In the presence of a magnetic field, the membrane has a maximum saturation magnetization of 9.98 emu/g, which the magnetic field drive can attract. The oil adsorption capacity of the membrane was 29–112 g/g, which also maintained 88 % of the initial value after ten cycles. In addition, a comprehensive evaluation was conducted to assess the fabricated composite membrane's separation flux, efficiency, and cycle life when exposed to acidic and alkaline corrosive solutions. The results indicated that even after 40 cycles, the membrane's oil–water separation flux and separation efficiency remained at 6971 L.h −1 .m −2 and 97 %, respectively, representing a 24.2 % increase compared to the unmodified membrane. Therefore, the membrane exhibits promising potential for treating oily wastewater in harsh environments.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 5
·1-14
·
IF 2.8
Junlong Wang,Yimin Dai,Ling Cai,Siwen Yang,Yusong Yang,Lihui Xie,Li Wan
The frequent leakage of crude oil and the illegal discharge of industrial organic pollutants have caused serious damage to the ecological environment and the loss of valuable resources. In this paper, we introduce a sponge with magnetic and photothermal properties. Polydopamine and ferric oxide (Fe 3 O 4 ) were grafted onto the sponge, self-assembled on the three-dimensional (3D) skeleton surface by Zif material, and grafted with cetyltrimethoxysilane to make the modified sponge highly hydrophobic (water contact angle = 155°). Moreover, due to the dual photothermal conversion properties of polydopamine and ferric oxide (Fe 3 O 4 ), the modified sponge can be quickly heated to 110 °C under light (1.25 kw/m 2 ). The modified sponge demonstrated excellent crude oil adsorption capacity (44 g/g) and recyclability. Due to its magnetic properties (saturated magnetization = 4.43 emu/g), derived from the incorporation of Fe₃O₄, the sponge could be remotely controlled for adsorption. Moreover, it demonstrated the ability to continuously adsorb and collect light oil from the water surface with the aid of a peristaltic pump. The sponge also functioned as an efficient filter for separating heavy oil underwater through liquid gravity, achieving a separation efficiency of 97.2%. Therefore, this composite sponge not only presents a promising solution for crude oil spill remediation but also holds significant potential for industrial wastewater treatment, making it highly relevant for practical environmental applications.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yunhao Pan,Tiancheng Zha,Yanan Zhu,Yibo Zhang,Xunming Tian,Aiwen Wang,Rui Wang,Dongmei Liu,Wei Wang,Shouzhu Li
Wastewater treatment for oil–water emulsions is a critical challenge in the environmental and energy sectors. The oil–water separation based on super-wettability membrane has received widespread attention. However, traditional membranes struggle with severe irreversible fouling due to interactions between emulsified oil and hydrophilic organic compounds in practical wastewater, problematizing continuous separation. Here, a non-synthetic polymer membrane with easy-washability after fouling is reported, which shows full recovery of original separation efficiency. The membrane is composed of cellulose blended with sepiolite, which encapsulates and infiltrates the silica nanofiber membrane through silanol condensation and capillary action, then forms a “tight top, bottom, and inside” flexible fusion structure in one step. The dynamic water absorption capability of sepiolite and cellulose can create an enhanced hydration layer on the dense membrane surface, this allows the membrane to maintain structural integrity and stable separation efficiency even in oil emulsion wastewater containing hydrophilic organic compounds. Also, the membrane may undergo assimilative healing by interacting with pollutants to form part of the membrane structure. So, it shows great performances for extended separation, withstanding oil intrusion pressures over 600 kPa, and nearly 100 % removal for oil emulsions. This promising material offers a universal modification strategy with broad wastewater treatment applications.
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
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 11
·50043
·
IF 2.52
Haitao Meng,Tong Xu,Mingyuan Gao,Jie Bai,Chunping Li
Oil–water separation is an urgent issue due to the frequently occurred oil leakages and increasing discharge of oily wastewater. The pollutional and wastewater can not only damage the environment, but endanger human health. Owing to the small particle size of the oil contamination, it is still a challenge for the separation of oil–water emulsion. In this study, we developed a facile strategy to prepare a hydrophilic polyvinylpyrrolidone/polyacrylonitrile (PVP/PAN) nanofibrous membrane for oil–water mixture and emulsion separation. The lowest water contact angle on the membrane surface can achieve 16.7°, thus the membranes can effectively resist the oil contamination on them. Moreover, the membrane can efficiently separate oil–water mixtures and emulsion by gravity. In addition, it can separate oil–water mixtures in harsh conditions (pH = 1 and 14). Membranes prepared in this work would hold a great potential in the practical use of water treatment and environmental industry.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）