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Wang T, Wang W, Hu C, Zheng J, Zhu Z, Liu B. Design of carboxymethyl cellulose/alginate aerogels with anti-fouling and light-driven self-cleaning for enhanced oily wastewater remediation. Carbohydr Polym 2024; 342:122358. [PMID: 39048190 DOI: 10.1016/j.carbpol.2024.122358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 07/27/2024]
Abstract
With the increase of oily wastewater discharge and the growing demand for clean water supply, high throughput green materials for oil-water separation with anti-pollution and self-cleaning ability are urgently needed. Herein, the polysaccharide-based composite aerogels of CMC/SA@TiO2-MWCNTs (CSTM) with fast photo-driven self-cleaning ability have been prepared by a simple freeze-drying and ionic cross-linking strategy. The introduction of TiO2 /MWCNTs nanocomposites effectively improves the underwater oleophobic and mechanical properties of polysaccharide aerogels and enables their photo-driven self-cleaning ability for efficient oil-water separation and purification of complex oily wastewater. For immiscible oil-water mixtures, a high separation flux of about 7650 L m-2 h-1 and a separation efficiency of up to 99.9 % was obtained. For surfactant-stabilized oil-in-water emulsion, a flux of 3952 L m-2 h-1 was achieved with a separation efficiency of up to 99.3 %. More importantly, the excellent photoluminescent self-cleaning ability and low oil adhesion contribute to the high contamination resistance, excellent reusability, and robust durability of CSTM aerogel. With the advantages of simple preparation, remarkable performance, and recyclability, this aerogel is expected to provide a green, economical, and scalable solution for the purification of oily wastewater.
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Affiliation(s)
- Tao Wang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Wei Wang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China; Department of Textile &Garment Engineering, Changshu Institute of Technology, Suzhou 215500, China
| | - Chunyan Hu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Jian Zheng
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Zhijia Zhu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China.
| | - Baojiang Liu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China.
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Fan B, Wu L, Ming A, Liu Y, Yu Y, Cui L, Zhou M, Wang Q, Wang P. Highly compressible and hydrophobic nanofibrillated cellulose aerogels for cyclic oil/water separation. Int J Biol Macromol 2023:125066. [PMID: 37268071 DOI: 10.1016/j.ijbiomac.2023.125066] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/15/2023] [Accepted: 05/22/2023] [Indexed: 06/04/2023]
Abstract
Nanofibrillated cellulose (NFC)-based aerogels are ideal oil-sorbent materials, but the poor structural stability and hydrophilicity restrain their practical applications in the fields of oil/water separation. In the present work, we report a facile strategy for constructing a hydrophobic nanofibrillated cellulose aerogel for cyclic oil/water separation. Briefly, an aerogel matrix of C-g-PEI with multiple cross-linked network structures was constructed via the combined use of oxidized-NFC (ONC), polyethyleneimine (PEI), and ethylene glycol diglycidyl ether (EGDE), followed by rapid in situ deposition of poly(methyl trichlorosilane) (PMTS) through a low-temperature gas-solid reaction. The resulting ONC-based aerogel (C-g-PEI-PMTS) exhibits the advantages of ultralight (53.80 mg/cm3), high porosity (95.73 %), hydrophobicity (contact angle of 130.0°) and remarkable elasticity (95.86 %). Meanwhile, the composite aerogel of C-g-PEI-PMTS is extremely suitable for oil sorption-desorption by a simple mechanical squeezing method. After 10 cycles of sorption-desorption, the sorption capacity of the aerogel towards various oils reached almost the same level as in the first cycle. The filtration separation efficiency for the trichloromethane-water mixtures remained at 99 % after 50 cycles, demonstrating encouraging reusability. In summary, an efficient strategy to prepare NFC-based aerogel with highly compressible and hydrophobic properties is developed, which expands the applications of NFC in the fields of oil/water separation.
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Affiliation(s)
- Bingjie Fan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Leilei Wu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Aoxue Ming
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Ying Liu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Li Cui
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Man Zhou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China.
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Guan Y, Wang Z, Bao M, Chen X, Dong L, Shen Y, Li Y. Multi-energies assisted and all-weather recovery of crude oil by superhydrophobic melamine sponge. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130131. [PMID: 36240586 DOI: 10.1016/j.jhazmat.2022.130131] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 09/26/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Efficient and safe recovery of high-viscosity marine crude oil spills is still a worldwide challenge. High-viscosity crude oil is difficult to be removed by traditional adsorbent materials. Although some recent developments in photothermal or electric-thermal oil-absorbing materials, the vertical heat transfer inside and the potential hazard of electrical leakage are difficult to be guaranteed. In order to overcome these problems, we polymerized dopamine (DA) in situ on the skeleton surface of the commercial melamine sponge (MS), and further coated the full-wavelength light-absorbing Fe3O4 NPs-Graphene (HF-G) on it to obtain the superhydrophobic sponge with excellent photothermal conversion effect, heat conductivity and magnetic heating capabilities (HF-G/PDA@MS). When the thickness of sponge is 5 mm, the HF-G/PDA@MS shows excellent vertical heat conductivity ability, and can absorb about 80 g/g. It also can be combined with an extra electric-heating device to achieve continuous heating to reduce the viscosity and recover crude oil at night or extreme weather. In addition, the temperature of HF-G/PDA@MS can reach about 40 °C by electromagnetic induction heater, indicating that we can use multiple energies-assisted modes to heat the HF-G/PDA@MS to. This work provides a promising solution and theoretical support for all-weather solving offshore crude oil spills pollution and recovery.
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Affiliation(s)
- Yihao Guan
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Zhining Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Xiuping Chen
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Limei Dong
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Yun Shen
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Yiming Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China.
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Iftekhar S, Deb A, Heidari G, Sillanpää M, Lehto VP, Doshi B, Hosseinzadeh M, Zare EN. A review on the effectiveness of nanocomposites for the treatment and recovery of oil spill. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:16947-16983. [PMID: 36609763 DOI: 10.1007/s11356-022-25102-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The introduction of unintended oil spills into the marine ecosystem has a significant impact on aquatic life and raises important environmental concerns. The present review summarizes the recent studies where nanocomposites are applied to treat oil spills. The review deals with the techniques used to fabricate nanocomposites and identify the characteristics of nanocomposites beneficial for efficient recovery and treatment of oil spills. It classifies the nanocomposites into four categories, namely bio-based materials, polymeric materials, inorganic-inorganic nanocomposites, and carbon-based nanocomposites, and provides an insight into understanding the interactions of these nanocomposites with different types of oils. Among nanocomposites, bio-based nanocomposites are the most cost-effective and environmentally friendly. The grafting or modification of magnetic nanoparticles with polymers or other organic materials is preferred to avoid oxidation in wet conditions. The method of synthesizing magnetic nanocomposites and functionalization polymer is essential as it influences saturation magnetization. Notably, the inorganic polymer-based nanocomposite is very less developed and studied for oil spill treatment. Also, the review covers some practical considerations for treating oil spills with nanocomposites. Finally, some aspects of future developments are discussed. The terms "Environmentally friendly," "cost-effective," and "low cost" are often used, but most of the studies lack a critical analysis of the cost and environmental damage caused by chemical alteration techniques. However, the oil and gas industry will considerably benefit from the stimulation of ideas and scientific discoveries in this field.
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Affiliation(s)
- Sidra Iftekhar
- Department of Applied Physics, University of Eastern Finland, 70210, Kuopio, Finland
| | - Anjan Deb
- Department of Chemistry, University of Helsinki, 00014, Helsinki, Finland
| | - Golnaz Heidari
- School of Chemistry, Damghan University, Damghan, 36716-41167, Iran
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
- Zhejiang Rongsheng Environmental Protection Paper Co. LTD, NO.588 East Zhennan Road, Pinghu Economic Development Zone, Zhejiang, 314213, People's Republic of China
- Department of Civil Engineering, University Centre for Research & Development, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Vesa-Pekka Lehto
- Department of Applied Physics, University of Eastern Finland, 70210, Kuopio, Finland
| | | | - Mehdi Hosseinzadeh
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Vietnam
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Fan B, Qi B, Wang P, Liu Y, Yu Y, Wang Q, Ren X. Mechanically Tough and Regenerable Antibacterial Nanofibrillated Cellulose-Based Aerogels for Oil/Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10716-10727. [PMID: 35980368 DOI: 10.1021/acs.langmuir.2c01785] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanofibrillated cellulose (NFC)-based aerogels have been widely used for various applications. However, the disadvantages of poor structural stability, low mechanical toughness, and easy contamination by bacteria hinder their large-scale application. In this work, 3-(3'-acrylicacidpropylester)-5,5-dimethyl hydantoin (APDMH) was grafted on oxidized NFC (ONC) to prepare antibacterial poly(APDMH)-g-ONC (PAC). PAC and poly(ethyleneimine) (PEI) were chemically cross-linked using 3-glycidoxypropyltrimethox (GPTMS), aiming at constructing a PAC-g-PEI aerogel with multiple network structures. The mechanical behaviors of composite aerogel and oil/water separation performances under different conditions were investigated. PAC-g-PEI aerogel exhibits outstanding fatigue resistance (>50 cycles of compression) and superior elasticity (96.76% height recovery after five compression-release cycles at 50% strain). The obtained superhydrophilic and underwater-oleophobic properties endow the aerogel with excellent oil/water separation performances, achieving a satisfactory separation efficiency of over 99% and flux of over 9500 L·m-2·h-1. Furthermore, the chlorinated aerogel of PAC-g-PEI-Cl shows highly efficient and rechargeable antibacterial properties, can inactivate 6.72-log Escherichia coli and 6.60-log Staphylococcus aureus within 10 min, and can still kill all inoculated bacteria after 50 cycles. In addition, PAC-g-PEI-Cl aerogel can inhibit biofilm formation, making it a promising candidate for highly efficient oil/water separation applications in diverse harsh conditions.
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Affiliation(s)
- Bingjie Fan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Bing Qi
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Ying Liu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Xuehong Ren
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China
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Synergistic effect of nano-silica and eco-friendly hydrogel for the cost-effective and highly efficient oil-water separation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128136] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Jahandideh H, Macairan JR, Bahmani A, Lapointe M, Tufenkji N. Fabrication of graphene-based porous materials: traditional and emerging approaches. Chem Sci 2022; 13:8924-8941. [PMID: 36091205 PMCID: PMC9365090 DOI: 10.1039/d2sc01786e] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/04/2022] [Indexed: 11/21/2022] Open
Abstract
The anisotropic nature of ‘graphenic’ nanosheets enables them to form stable three-dimensional porous materials. The use of these porous structures has been explored in several applications including electronics and batteries, environmental remediation, energy storage, sensors, catalysis, tissue engineering, and many more. As method of fabrication greatly influences the final pore architecture, and chemical and mechanical characteristics and performance of these porous materials, it is essential to identify and address the correlation between property and function. In this review, we report detailed analyses of the different methods of fabricating porous graphene-based structures – with a focus on graphene oxide as the base material – and relate these with the resultant morphologies, mechanical responses, and common applications of use. We discuss the feasibility of the synthesis approaches and relate the GO concentrations used in each methodology against their corresponding pore sizes to identify the areas not explored to date. Due to their anisotropic nature, graphene nanosheets can be used to form 3-dimensional porous materials using template-free and template-directed methodologies. These fabrication strategies are found to influence the properties of the final structure.![]()
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Affiliation(s)
- Heidi Jahandideh
- Department of Chemical Engineering, McGill University, Montreal, QC H3A 0C5, Canada
- McGill Institute for Advanced Materials (MIAM), McGill University, Montreal, Quebec, Canada
| | - Jun-Ray Macairan
- Department of Chemical Engineering, McGill University, Montreal, QC H3A 0C5, Canada
| | - Aram Bahmani
- Department of Mechanical Engineering, McGill University, Montreal, QC H3A 0C3, Canada
| | - Mathieu Lapointe
- Department of Chemical Engineering, McGill University, Montreal, QC H3A 0C5, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, Montreal, QC H3A 0C5, Canada
- McGill Institute for Advanced Materials (MIAM), McGill University, Montreal, Quebec, Canada
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Yang J, Chen Y, Gao K, Li Y, Wang S, Xie F, Jia X, Song H. Biomimetic superelastic sodium alginate-based sponges with porous sandwich-like architectures. Carbohydr Polym 2021; 272:118527. [PMID: 34420761 DOI: 10.1016/j.carbpol.2021.118527] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/27/2021] [Accepted: 08/01/2021] [Indexed: 01/29/2023]
Abstract
Design and fabrication of structurally optimized three-dimensional porous materials are highly desirable for engineering applications. Herein, through a facile bidirectional freezing technique, we prepared superelastic biomass sponges in air and underwater, which possess biomimetic porous sandwich-like architectures with lamellar layers interconnected by porous microstructures, similar to the structure of rice stems. This distinctive architecture was obtained by incorporating Typha orientalis fibers (TOFs) and graphene oxide (GO) nanosheets into sodium alginate (SA) matrix, in which SA flakes and GO nanosheets were intimately grown along TOFs. The porous sandwich-like microstructure allows stress to be distributed throughout the lamellar to avoid stress concentration and endows SA/TOFs/GO sponge with excellent mechanical compressibility and recoverability. Especially, underwater superelasticity and superoleophobicity of the sponge facilitates removal of water-miscible contaminants or oil/water separation with high efficiency. This novel strategy for the design biomimetic architecture of superelastic biomass sponge can promote its application for protecting environment.
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Affiliation(s)
- Jin Yang
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Yu Chen
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Kuidong Gao
- Shandong Province Key Laboratory of Mine Mechanical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yong Li
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Sizhe Wang
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China
| | - Fangwei Xie
- School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Xiaohua Jia
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China.
| | - Haojie Song
- School of Materials Science & Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi' an, Shaanxi 710021, China.
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Shen Y, Li D, Wang L, Zhou Y, Liu F, Wu H, Deng B, Liu Q. Superelastic Polyimide Nanofiber-Based Aerogels Modified with Silicone Nanofilaments for Ultrafast Oil/Water Separation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20489-20500. [PMID: 33904301 DOI: 10.1021/acsami.1c01136] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanofiber membranes via electrospinning with layered structures are frequently used for oil/water separation, thanks to their unique properties. However, challenges that involve nanofibrous membranes still remain, such as high energy consumption and unfavorable transport properties because of the densely compact structure. In this study, superelastic and robust nanofiber-based aerogels (NFAs) with a three-dimensional (3D) structure as well as tunable porosity were prepared using polyimide (PI) nanofibers via a freeze-drying process followed by the solvent-vapor treatment. The porous NFAs were further modified using trichloromethylsilane (TCMS) to generate silicone nanofilaments (SiNFs) on the surface of the PI nanofibers, which could enhance the hydrophobicity (water contact angle 151.7°) of the NFAs. The corresponding superhydrophobic NFAs exhibited ultralow density (<10.0 mg m-3), high porosity (>99.0%), and rapid recovery under 80% compression strain. SiNFs-coated NFAs (SiNFs/NFAs) could also collect a wide range of oily solvents with high absorption capacities up to 159 times to their own weight. Moreover, surfactant-stabilized water-in-oil emulsions could also be efficiently separated (up to 100%) under the driving force of gravity, making it a promising energy-efficient technology. Additionally, SiNFs/NFAs maintained high separation efficiency throughout five separation-recovery cycles, indicating the potential of SiNFs/NFAs in the field of oil/water separation, sewage treatment, as well as oily fume purification.
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Affiliation(s)
- Ying Shen
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Dawei Li
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Lanlan Wang
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Yuqi Zhou
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Feng Liu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Huiping Wu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Bingyao Deng
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Qingsheng Liu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
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Wang Y, He Y, Fan Y, Li H, Yu H, Yu J, Nie Y, Wang S. A robust anti-fouling multifunctional aerogel inspired by seaweed for efficient water purification. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118153] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Chen Y, Zhang L, Yang Y, Pang B, Xu W, Duan G, Jiang S, Zhang K. Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005569. [PMID: 33538067 DOI: 10.1002/adma.202005569] [Citation(s) in RCA: 172] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/25/2020] [Indexed: 05/26/2023]
Abstract
The rapid development of modern industry and excessive consumption of petroleum-based polymers have triggered a double crisis presenting a shortage of nonrenewable resources and environmental pollution. However, this has provided an opportunity to stimulate researchers to harness native biobased materials for novel advanced materials and applications. Nanocellulose-based aerogels, using abundant and sustainable cellulose as raw material, present a third-generation of aerogels that combine traditional aerogels with high porosity and large specific surface area, as well as the excellent properties of cellulose itself. Currently, nanocellulose aerogels provide a highly attention-catching platform for a wide range of functional applications in various fields, e.g., adsorption, separation, energy storage, thermal insulation, electromagnetic interference shielding, and biomedical applications. Here, the preparation methods, modification strategies, composite fabrications, and further applications of nanocellulose aerogels are summarized, with additional discussions regarding the prospects and potential challenges in future development.
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Affiliation(s)
- Yiming Chen
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Lin Zhang
- MIT Media Lab, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Yang Yang
- Department of Wood Technology and Wood-Based Composites, University of Göttingen, Büsgenweg 4, Göttingen, 37077, Germany
| | - Bo Pang
- Department of Wood Technology and Wood-Based Composites, University of Göttingen, Büsgenweg 4, Göttingen, 37077, Germany
| | - Wenhui Xu
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, China
| | - Gaigai Duan
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Shaohua Jiang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Kai Zhang
- Department of Wood Technology and Wood-Based Composites, University of Göttingen, Büsgenweg 4, Göttingen, 37077, Germany
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Wu K, Fang Y, Wu H, Wan Y, Qian H, Jiang F, Chen S. Improving konjac glucomannan-based aerogels filtration properties by combining aerogel pieces in series with different pore size distributions. Int J Biol Macromol 2020; 166:1499-1507. [PMID: 33181223 DOI: 10.1016/j.ijbiomac.2020.11.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 12/01/2022]
Abstract
The pore size distribution of konjac glucomannan (KGM)-based aerogels seriously impacted the air filtration efficiency and filtration resistance. This study aimed to investigate the pore size distribution control of KGM-based aerogels through total solid concentration of the sol and to improve the filtration performance by preparing aerogel stacks, which were made by combining KGM-based aerogels with different pore size distribution (range: 0-180 μm). Results indicated that with increased total solid concentration from 50% to 100% of the origin formulae, aerogel pore size became smaller and the porosity was decreased for all the three sample formulae. Meanwhile, the aerogel mechanical property and filtration efficiency were both strengthened with increased total solid concentration, but the air resistance became significantly higher. The changing extent and rule were influenced by the sample components (KGM, starch, gelatin, wheat straw). The aerogel stacks prepared by in series combining the aerogel pieces with different pore size distribution (from large size to small size) was found to improve filtration efficiency (e.g. from 70% to 80% for K1G2S4WS2) and significantly lower the air resistance (e.g. from 270 Pa to 190 Pa for K1G2S4WS2). This study could guide the filtration performance improvement of aerogels.
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Affiliation(s)
- Kao Wu
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China
| | - Ying Fang
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China
| | - Huaxin Wu
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China
| | - Yi Wan
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China
| | - Hong Qian
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China
| | - Fatang Jiang
- Glyn O. Philips Hydrocolloid Research Centre at HUT, Hubei University of Technology, Wuhan 430068, China; Department of Architecture and Built Environment, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
| | - Sheng Chen
- Yellow Crane Tower Science and Technology Park (Group) Co., Ltd., Wuhan 430040, Hubei, China.
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13
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Mruthunjayappa MH, Sharma VT, Dharmalingam K, Sanna Kotrappanavar N, Mondal D. Engineering a Biopolymer-Based Ultrafast Permeable Aerogel Membrane Decorated with Task-Specific Fe-Al Nanocomposites for Robust Water Purification. ACS APPLIED BIO MATERIALS 2020; 3:5233-5243. [PMID: 35021698 DOI: 10.1021/acsabm.0c00630] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present work demonstrates an innovative strategy for robust water purification using an engineered aerogel membrane fabricated from biopolymers and task-specific Fe-Al-based nanocomposites. The as-prepared ethylenediaminetetraacetate dianhydride cross-linked chitosan- and agarose (7:3 weight ratio)-based aerogel membrane decorated with α-FeOOH- and γ-AlOOH-based nanocomposites was characterized using various analytical tools, which suggested formation of a highly stable network interconnected through covalent and electrostatic interactions. The optimized bionanocomposite-based aerogel (BNC-AG-0.1) membrane showed macroporous and partial unidirectional short-range channels with an ultralow density of 0.021 g·m-2, a high swelling ratio of 1974%, and a remarkable pure water flux of 19,228 L·m-2·h-1 (>6-fold higher flux compared to the reported aerogel membranes). The aerogel membranes were successfully utilized for purification of diverse pollutants such as dyes, emerging pollutants (EPs), arsenate, and fluoride in a continuous flow method under gravitational force. The BNC-AG-0.1 membrane exhibits high rejection (95-98.6%) for both cationic and anionic dyes with a flux rate of 1150-1375 L·m-2·h-1 and a rejection of 89-92% for EPs with a flux rate of 1098-1165 L·m-2·h-1. Moreover, the BNC-AG-0.1 membrane showed a qmax of 102.45 mg·g-1 (at pH 6.5) for As(V) with >93% rejection at a flow rate of 1000 L·m-2·h-1. Furthermore, the aerogel membrane showed an excellent removal efficiency (92%) of arsenic up to the 10th cycle and hence demonstrated as a potential adsorption-based membrane for arsenic-free potable water. On the other hand, the BNC-AG-0.1 membrane showed a qmax of 81.56 mg·g-1 (at pH 6.5) for F- removal with >99% rejection at a flow rate of 250 L·m-2·h-1. When applied for real-water purification, approximately 4734 L of safe drinking water (the F- concentration is less than the WHO permissible limit) per square meter of the aerogel membrane can be obtained with a flux rate of 250 L·m-2·h-1. Overall, the prepared aerogel membrane showed robust removal of a variety of contaminants with ultrafast water permeation and established excellent recyclability.
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Affiliation(s)
| | - Vibha T Sharma
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India
| | - Kalpana Dharmalingam
- Central Electrochemical Research Institute-Madras Unit, CSIR Madras Complex, Taramani, Chennai 600 113, India
| | - Nataraj Sanna Kotrappanavar
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India.,IMDEA Water Institute, Parque Científico Tecnológico de la Universidad de Alcalá, Avenida Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain
| | - Dibyendu Mondal
- Centre for Nano & Material Science, JAIN (Deemed to be University), Jain Global Campus, Bangalore 562112, India
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14
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Wang A, Yuan Z, Wang C, Luo L, Zhang W, Geng S, Qu J, Wei B, Wen Y. Zwitterionic Cellulose Nanofibrils with High Salt Sensitivity and Tolerance. Biomacromolecules 2020; 21:1471-1479. [PMID: 32069405 DOI: 10.1021/acs.biomac.0c00035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To improve the salt tolerance/sensitivity of cellulose nanofibrils (CNFs), zwitterionic cellulose nanofibrils (ZCNFs) were prepared from softwood bleached kraft pulp fibers via a sequential process of anionic modification with 2,2,6,6-tetramethylepiperidin-1-oxyl (TEMPO)-mediated oxidation, cationic modification with (2,3-epoxypropyl) trimethylammonium chloride (EPTMAC), and high-pressure homogenization. To produce ZCNFs with different contents of cation group, EPTMAC loadings of 0.15 to 1.15 g/g fiber were explored during cationization. The obtained ZCNFs were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectra (XPS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and rheological measurements. The salt tolerance of the ZCNFs was investigated by adding mixed salts into the ZCNF dispersions. The results demonstrated that the ZCNFs with both anionic and cationic charges were produced. Compared with the TEMPO-mediated oxidized cellulose nanofibrils (TOCNFs), the ZCNFs exhibited an excellent "salt-thickening" behavior under the studied salt concentrations (2-24% w/w). Moreover, increasing the content of the cation group increased the salt tolerance/sensitivity of ZCNFs. This work demonstrated that introducing cationic charges to the anionic charged TOCNFs imparts the produced ZCNFs with excellent salt sensitivity and tolerance, which could expand the application of nanocellulose in oil recovery or wastewater treatment.
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Affiliation(s)
- An Wang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Zhaoyang Yuan
- Department of Biochemistry & Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, Michigan 48824, United States
| | - Chunping Wang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Langman Luo
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Weifeng Zhang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Shao Geng
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Jialei Qu
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Bing Wei
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan China
| | - Yangbing Wen
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
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15
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Pornea AM, Puguan JMC, Deonikar VG, Kim H. Robust Janus nanocomposite membrane with opposing surface wettability for selective oil-water separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116297] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Abstract
Oily wastewater from shipping waste and marine accidents have seriously polluted the marine environment and brought great harm to human production and health. With the increasing awareness of environmental protection, the treatment of marine oily wastewater has attracted extensive attention from the international community. Marine oily wastewater has various forms and complex components, so its treatment technology faces great challenges. Sources, types, supervision, and treatment of marine oily wastewater are introduced in this paper. The research progress of marine and ship’s oily wastewater treatment technologies in recent years are reviewed from the perspectives of physical treatment, chemical treatment, biological treatment, and combined treatment, respectively. Principles and characteristics of all kinds of technologies were analyzed. In addition, this paper shows that multiple processing technologies used in combination for the purpose of high efficiency, environmental protection, economy, and energy conservation are the future development trend.
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17
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A green strategy for preparing durable underwater superoleophobic calcium alginate hydrogel coated-meshes for oil/water separation. Int J Biol Macromol 2019; 136:13-19. [DOI: 10.1016/j.ijbiomac.2019.06.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/04/2019] [Accepted: 06/07/2019] [Indexed: 12/22/2022]
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18
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Chitosan/ nanofibrillated cellulose aerogel with highly oriented microchannel structure for rapid removal of Pb (II) ions from aqueous solution. Carbohydr Polym 2019; 223:115048. [PMID: 31426974 DOI: 10.1016/j.carbpol.2019.115048] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 11/21/2022]
Abstract
Among the heavy metal ions, Pb (II) can cause serious diseases in the nervous and cardiovascular systems even at an ultralow concentration. Nowadays, various materials with high adsorption capacity have been developed for heavy metal ions adsorption. However, most of them have a low adsorption rate and may take a long time to achieve adsorption equilibrium. In this work, chitosan (CS)/ nanofibrillated cellulose (NFC) aerogel with oriented microchannel structure was developed via a directional freeze-drying approach. The structure of the CS/NFC aerogel was characterized and its adsorption performance for Pb (II) was also investigated. The results reveal that the maximum adsorption capacity for Pb (II) is 252.6 mg g-1, much higher than most chitosan-based adsorbents reported in the literature. More impressively, the developed aerogel takes only 5 min to achieve 85% of equilibrium adsorption capacity for Pb (II) due to its highly oriented microchannel structure. Furthermore, the aerogel maintains a high removal efficiency (>85%) after 5 adsorption-desorption cycles. The obtained results demonstrate that the as-prepared CS/NFC aerogel can be used as an effective adsorbent for Pb (II) removal from aqueous solution.
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19
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20
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Guan Y, Cheng F, Pan Z. Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review. Polymers (Basel) 2019; 11:E806. [PMID: 31064062 PMCID: PMC6571923 DOI: 10.3390/polym11050806] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/18/2019] [Accepted: 04/25/2019] [Indexed: 12/19/2022] Open
Abstract
Oil spills and the emission of oily wastewater have triggered serious water pollution and environment problems. Effectively separating oil and water is a world-wide challenge and extensive efforts have been made to solve this issue. Interfacial super-wetting separation materials e.g., sponge, foams, and aerogels with high porosity tunable pore structures, are regarded as effective media to selectively remove oil and water. This review article reports the latest progress of polymeric three dimensional porous materials (3D-PMs) with super wettability to separate oil/water mixtures. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed. The typical 3D porous structures (e.g., sponge, foam, and aerogel), commonly used polymers, and the most reported techniques involved in developing desired porous networks have been reviewed. The performances of 3D-PMs such as oil/water separation efficiency, elasticity, and mechanical stability are discussed. Additionally, the current challenges in the fabrication and long-term operation of super-wetting 3D-PMs in oil/water separation have also been introduced.
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Affiliation(s)
- Yihao Guan
- Institute of Resources and Environmental Engineering, Shanxi University, 92 Wucheng Road, Xiaodian District, Taiyuan 030006, China.
- Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes, Shanxi University, Taiyuan 030006, China.
| | - Fangqin Cheng
- Institute of Resources and Environmental Engineering, Shanxi University, 92 Wucheng Road, Xiaodian District, Taiyuan 030006, China.
- Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes, Shanxi University, Taiyuan 030006, China.
| | - Zihe Pan
- Institute of Resources and Environmental Engineering, Shanxi University, 92 Wucheng Road, Xiaodian District, Taiyuan 030006, China.
- Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes, Shanxi University, Taiyuan 030006, China.
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21
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A pair of MnO2 nanocrystal coatings with inverse wettability on metal meshes for efficient oil/water separation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Zhang H, Li Y, Shi R, Chen L, Fan M. A robust salt-tolerant superoleophobic chitosan/nanofibrillated cellulose aerogel for highly efficient oil/water separation. Carbohydr Polym 2018; 200:611-615. [DOI: 10.1016/j.carbpol.2018.07.071] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/14/2018] [Accepted: 07/24/2018] [Indexed: 10/28/2022]
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23
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Huang S, Ras RH, Tian X. Antifouling membranes for oily wastewater treatment: Interplay between wetting and membrane fouling. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.02.002] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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A robust superhydrophobic TiO 2 NPs coated cellulose sponge for highly efficient oil-water separation. Sci Rep 2017; 7:9428. [PMID: 28842635 PMCID: PMC5572709 DOI: 10.1038/s41598-017-09912-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/01/2017] [Indexed: 12/23/2022] Open
Abstract
Oil-water separation has recently become a worldwide concern because of the increasing oil spill accidents and industrial oily wastewater generation. Herein, a facile method with the combined superhydrophobic coating and adhesive was used to fabricate superhydrophobic TiO2 NPs coated cellulose sponge. The developed materials exhibited excellent superhydrophobicity (WCA = 171°) and superoleophilicity (OCA = 0°), which can separate a variety of oil-water mixtures, including chloroform, toluene, kerosene and other contaminations. A high separation efficiency up to 98.5% for chloroform-water mixture was achieved when used for gravity-driven oil/water separation test. More importantly, the as-prepared samples exhibited excellent chemical stability and mechanical abrasion resistance even towards various corrosive oil/water mixtures (such as strong acid, alkali solution and salt-water environment) or a strong abrasion by aluminium oxide sandpaper of 600 mesh. In addition, the separation efficiency remained above 93% even after 40 scratch cycles, and the materials could be reused with a stable hydrophobicity, indicating a strong potential for industrial application.
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25
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Li Y, Zhang H, Fan M, Zheng P, Zhuang J, Chen L. A robust salt-tolerant superoleophobic alginate/graphene oxide aerogel for efficient oil/water separation in marine environments. Sci Rep 2017; 7:46379. [PMID: 28397862 PMCID: PMC5387746 DOI: 10.1038/srep46379] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/14/2017] [Indexed: 11/15/2022] Open
Abstract
Marine pollution caused by frequent oil spill accidents has brought about tremendous damages to marine ecological environment. Therefore, the facile large-scale preparation of three-dimensional (3D) porous functional materials with special wettability is in urgent demand. In this study, we report a low-cost and salt-tolerant superoleophobic aerogel for efficient oil/seawater separation. The aerogel is prepared through incorporating graphene oxide (GO) into alginate (ALG) matrix by using a facile combined freeze-drying and ionic cross-linking method. The 3D structure interconnected by ALG and GO ensures the high mechanical strength and good flexibility of the developed aerogel. The rough microstructure combined with the hydrophilicity of the aerogel ensures its excellent underwater superoleophobic and antifouling properties. High-content polysaccharides contained in the aerogel guarantees its excellent salt-tolerant property. More impressively, the developed aerogel can retain its underwater superoleophobicity even after 30 days of immersion in seawater, indicating its good stability in marine environments. Furthermore, the aerogel could separate various oil/water mixtures with high separation efficiency (>99%) and good reusability (at least 40 cycles). The facile fabrication process combined with the excellent separation performance makes it promising for practical applications in marine environments.
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Affiliation(s)
- Yuqi Li
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hui Zhang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mizi Fan
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Nanocellulose and Biocomposites Research Centre, College of Engineering, Design and Physical Sciences, Brunel University, UB8 3PH, UK
| | - Peitao Zheng
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiandong Zhuang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lihui Chen
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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26
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Zhang H, Li Y, Xu Y, Lu Z, Chen L, Huang L, Fan M. Versatile fabrication of a superhydrophobic and ultralight cellulose-based aerogel for oil spillage clean-up. Phys Chem Chem Phys 2016; 18:28297-28306. [DOI: 10.1039/c6cp04932j] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To deal with marine oil spillage and chemical leakage issues, a highly efficient absorbent (cellulose based aerogel) with a low density (ρ < 0.034 g cm−3, φ > 98.5%) and high mechanical strength was fabricated via a novel physical–chemical foaming method, plasma treatment and subsequent silane modification process.
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Affiliation(s)
- Hui Zhang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yuqi Li
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yaoguang Xu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Zexiang Lu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Lihui Chen
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Liulian Huang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Mizi Fan
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
- Nanocellulose and Biocomposites Research Centre, College of Engineering
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