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Zhou Y, Ye Q, Han Y, He G, Chen C. Fabrication of Superhydrophobic Porous Brass by Chemical Dealloying for Efficient Emulsion Separation. Molecules 2023; 28:6509. [PMID: 37764285 PMCID: PMC10534338 DOI: 10.3390/molecules28186509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
By taking advantage of typical dealloying and subsequent aging methods, a novel homogeneous porous brass with a micro/nano hierarchical structure was prepared without any chemical modification. The treatment of commercial brass with hot concentrated HCl solution caused preferential etching of Zn from Cu62Zn38 alloy foil, leaving a microporous skeleton with an average tortuous channel size of 1.6 μm for liquid transfer. After storage in the atmosphere for 7 days, the wettability of the dealloyed brass changed from superhydrophilic to superhydrophobic with a contact angle > 156° and sliding angle < 7°. The aging treatment enhanced the hydrophobicity of the brass by the formation of Cu2O on the surface. By virtue of the opposite wettability to water and oil, the aged brass separated surfactant-stabilized water-in-oil emulsions with separation efficiency of over 99.4% and permeate flux of about 851 L·m-2·h-1 even after recycling for 60 times. After 10 times of tape peeling or sandpaper abrasion, the aged brass maintained its superhydrophobicity, indicating its excellent mechanical stability. Moreover, the aged brass still retained its superhydrophobicity after exposure to high temperatures or corrosive solutions, displaying high resistance to extreme environments. The reason may be that the bicontinuous porous structure throughout the whole foil endows stable mechanical properties to tolerate extreme environments. This method should have a promising future in expanding the applications of alloys.
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Affiliation(s)
- Yanbiao Zhou
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Qingqing Ye
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Yongjun Han
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Guoxu He
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Changdong Chen
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
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2
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Saikiran P, Dhole M, Bhandaru N. Durability studies of underwater superoleophobic graphene oxide coated wire mesh. NANOSCALE ADVANCES 2023; 5:1060-1069. [PMID: 36798498 PMCID: PMC9926886 DOI: 10.1039/d2na00667g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
Due to the increased industrial oily wastewater, developing a successful oil/water separation mechanism is a ubiquitous challenge. As oil/water separation is an interfacial phenomenon, a straightforward way is to utilize the special wettability of novel materials towards oil and water. In this work, we intend to construct a durable membrane/mesh that can have a selective response towards oil and water based on the difference in surface tension. Graphene oxide (GO) is one such material that exhibits in-air hydrophilicity and underwater superoleophobicity. GO-coated wire meshes can act as membranes with excellent efficiency for oil/water separation, but they lack long-term durability for repeated use under different environments. We created GO*-coated wire meshes by dip coating multiple layers of GO with intermediate air plasma treatment. While the multiple steps of coating ensured complete coverage of the mesh with GO, plasma treatment improved the binding of the GO coating to the wire mesh. After coating five GO layers, the mesh is subjected to mild plasma treatment to improve the porosity. The GO*-coated mesh is extremely hydrophilic in air, and the underwater oil contact angles (CA) are ≥125° for different oils. To test the long-term durability, the GO*-coated mesh is continuously immersed underwater in acidic and basic media, and the underwater oil CA is measured at different immersion times. The initial durability results are very promising and show that the GO*-coated mesh retains a significant level of underwater oleophobicity even after 60 days of continuous immersion in water.
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Affiliation(s)
- Pichkari Saikiran
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani Hyderabad Campus Pin - 500 078 Telangana India
| | - Mayuri Dhole
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani Hyderabad Campus Pin - 500 078 Telangana India
| | - Nandini Bhandaru
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani Hyderabad Campus Pin - 500 078 Telangana India
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3
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Fan S, Li Y, Wang R, Ma W, Shi Y, Fan W, Zhuo K, Xu G. Intelligent Coatings with Controlled Wettability for Oil-Water Separation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3120. [PMID: 36144908 PMCID: PMC9500904 DOI: 10.3390/nano12183120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Intelligent surfaces with controlled wettability have caught much attention in industrial oily wastewater treatment. In this study, a hygro-responsive superhydrophilic/underwater superoleophobic coating was fabricated by the liquid-phase deposition of SiO2 grafted with perfluorooctanoic acid. The wettability of the surface could realize the transformation from superhydrophilicity/underwater superoleophobicity (SHI/USOB) to superhydrophobicity/superoleophilicity (SHB/SOI), both of which exhibited excellent separation performance towards different types of oil-water mixtures with the separation efficiency higher than 99%. Furthermore, the long-chain perfluoroakyl substances on the surface could be decomposed by mixing SiO2 with TiO2 nanoparticles under UV irradiation, which could reduce the pollution to human beings and environment. It is anticipated that the prepared coating with controlled wettability could provide a feasible solution for oil-water separation.
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Affiliation(s)
- Shumin Fan
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yunxiang Li
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Rujun Wang
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Wenwen Ma
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yipei Shi
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Wenxiu Fan
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Kelei Zhuo
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Guangri Xu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
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4
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Wang J, Xu J, Lian Z, Wang J, Chen G, Li Y, Yu H. Facile and green fabrication of robust microstructured stainless steel mesh for efficient oil/water separation via waterjet-assisted laser ablation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Ren W, Lian Z, Wang J, Xu J, Yu H. Fabrication of durable underoil superhydrophobic surfaces with self-cleaning and oil–water separation properties. RSC Adv 2022; 12:3838-3846. [PMID: 35425436 PMCID: PMC8981094 DOI: 10.1039/d1ra06422c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/25/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, a simple method without any additional chemical modification is proposed to fabricate underoil superhydrophobic surfaces with micro- and nano-hierarchical structures using a nanosecond laser system. The fabricated surfaces exhibited extreme superhydrophobicity and underoil superhydrophobicity with high contact angles of 153.8 ± 1.5° and 161.3 ± 1.1°, respectively. The results show that even after 20 abrasion cycles, the fabricated surfaces retained water repellency and self-cleaning performance under oil, while the superhydrophobicity in air was not resistant to wear. In addition, the fabricated brass meshes can also be used to separate oil in an oil–water mixture based on the prewetting induced underoil superhydrophobicity after being damaged. The separation efficiency was as high as 97.8%, which made them more appropriate for the oil–water separation than those based on superhydrophobicity. The proposed fabrication method is suitable for large-scale and mass production and provides a new avenue and possibility for further development of robust functional interface materials. This paper provides a simple method for the fabrication of underoil superhydrophobic surfaces, which is expected to be useful in promoting functional interface materials to practical application.![]()
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Affiliation(s)
- Wanfei Ren
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China
| | - Zhongxu Lian
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China
| | - Jiaqi Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China
| | - Jinkai Xu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China
| | - Huadong Yu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China
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Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations. ENERGIES 2021. [DOI: 10.3390/en14217429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Separating oil-water mixtures is critical in a variety of practical applications, including the treatment of industrial wastewater, oil spill cleanups, as well as the purification of petroleum products. Among various methodologies that have been utilized, membranes are the most attractive technology for separating oil-water emulsions. In recent years, selective wettability membranes have attracted particular attention for oil-water separations. The membrane surfaces with hydrophilic and in-air oleophobic wettability have demonstrated enhanced effectiveness for oil-water separations in comparison with underwater oleophobic membranes. However, developing a hydrophilic and in-air oleophobic surface for a membrane is not a trivial task. The coating delamination process is a critical challenge when applying these membranes for separations. Inspired by the above, in this study we utilize poly(ethylene glycol)diacrylate (PEGDA) and 1H,1H,2H,2H-heptadecafluorodecyl acrylate (F-acrylate) to fabricate a hydrophilic and in-air oleophobic coating on a filter. We utilize methacryloxypropyl trimethoxysilane (MEMO) as an adhesion promoter to enhance the adhesion of the coating to the filter. The filter demonstrates robust oil repellency preventing oil adhesion and oil fouling. Utilizing the filter, gravity-driven and continuous separations of surfactant-stabilized oil-water emulsions are demonstrated. Finally, we demonstrate that the filter can be reused multiple times upon rinsing for further oil-water separations.
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Polyimide based super-wettable membranes/materials for high performance oil/water mixture and emulsion separation: A review. Adv Colloid Interface Sci 2021; 297:102525. [PMID: 34653904 DOI: 10.1016/j.cis.2021.102525] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 01/08/2023]
Abstract
This article reviews the application of highly heat and pressure resistant polyimide material for the development of membranes/materials that exhibit unique super-wettability, the characteristics pivotal for the efficient separation of oil-water mixture and emulsion. The polymerization of imide monomer in polyimide brings about the required porosity in the material, which in turn renders the crucial surface roughness, which is instrumental for establishing the desired super-wettability on the polyimide based membrane materials, in addition to the mechanical and thermal robustness. The membrane as the oil-water filtering medium can be either oil passing or water passing depends on the individual wettability of the membrane surface for oil and water, which in turn depend on the respective solid-liquid interfacial energy and the hierarchical surface roughness. Superhydrophobic/superoleophobic wetting characteristic of the surface repels water and allows oil to pass through the membrane medium, and the major disadvantage of this kind of oil/water separation is the rapid oil fouling of the membrane pores and the consequent less efficiency for oil water separation. On the other hand, the membrane surface engineered to have the Superhydrophilic/underwater superoleophobic wetting characteristics can be water passing, and the easy fouling of the membrane surface can be minimized. In the case of polyimide materials, there are lot of scopes to engineer the physical properties like surface energy and surface roughness of the membrane surface in order to obtain the required wettability. There have been many works focused on the application of different variants of polyimide materials for developing membrane for oil water separation. In this review, we present an itemized review of various works on polyimide materials based oil/water separation in terms of chemical, physical, structural and surface characteristics of the material.
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Shami Z, Amininasab SM, Katoorani SA, Gharloghi A, Delbina S. NaOH-Induced Fabrication of a Superhydrophilic and Underwater Superoleophobic Styrene-Acrylate Copolymer Filtration Membrane for Effective Separation of Emulsified Light Oil-Polluted Water Mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12304-12312. [PMID: 34644497 DOI: 10.1021/acs.langmuir.1c01692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Oil-polluted water mixtures are difficult to separate, and thus, they are considered as a global challenge. A superior superhydrophilic and low-adhesive underwater superoleophobic styrene-acrylate copolymer filtration membrane is constructed using a salt (NaOH)-induced phase-inversion approach. The as-fabricated filtration membrane provides a hierarchical-structured surface morphology and three-dimensional high density open-rough porous geometry with a special chemical composition including highly accessible hydrophilic -COO- agents, which all are of great importance for long-term usage of immiscible/emulsified (light) oil-polluted wastewater separation. The separation is performed with a high efficiency and a high flux under either a gravity-driven force or a small applied pressure of 0.1 bar. The filtration membrane indicates an excellent anti-fouling property and is easily recycled during multiple cycles. The outstanding performance of the filtration membrane in separating oil-polluted water mixtures and the cost-effective synthetic approach as well as commercially scaled-up initial materials all highlight its potential for practical applications.
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Affiliation(s)
- Zahed Shami
- Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran
| | - Seyed Mojtaba Amininasab
- Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran
| | - Seyed Adib Katoorani
- Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran
| | - Atefeh Gharloghi
- Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran
| | - Somayeh Delbina
- Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran
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9
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Qu M, Pang Y, Li J, Wang R, Luo Z, He D, Sun W, Peng L, He J. Efficient separation of oil‐in‐water emulsion based on a superhydrophilic and underwater superoleophobic polyvinylidene fluoride membrane. SURF INTERFACE ANAL 2021. [DOI: 10.1002/sia.6993] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Mengnan Qu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Yajie Pang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Jiehui Li
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Rong Wang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Zhanxia Luo
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Dan He
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Wenchao Sun
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Lei Peng
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
| | - Jinmei He
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an China
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10
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Zhang J, Zang H, Zhang Y, Li G, Lai X, Xiao L, Cui Z, Luo L, Song Y, Yang Y, Duan T, Cai Y, Zhang D. An integrated separating system constructed by laser-patterned commercially available materials towards oily domestic sewage. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Bottom-up and up-down strategy to obtain the highly porous polystyrene foam for oily water remediation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118233] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Lin Y, Zhang Z, Ren Z, Yang Y, Guo Z. A solvent-responsive robust superwetting titanium dioxide-based metal rubber for oil-water separation and dye degradation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Zhao Z, Ning Y, Jin X, Ben S, Zha J, Su B, Tian D, Liu K, Jiang L. Molecular-Structure-Induced Under-Liquid Dual Superlyophobic Surfaces. ACS NANO 2020; 14:14869-14877. [PMID: 33164493 DOI: 10.1021/acsnano.0c03977] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surfaces with under-water superoleophobicity or under-oil superhydrophobicity have attractive features due to their widespread applications. However, it is difficult to achieve under-liquid dual superlyophobic surfaces, that is, under-oil superhydrophobicity and under-water superoleophobicity coexistence, due to the thermodynamic contradiction. Herein, we report an approach to obtain the under-liquid dual superlyophobic surface through conformational transitions of surface self-assembled molecules. Preferential exposure of either hydrophobic or hydrophilic moieties of the hydroxythiol (HS(CH2)nOH, where n is the number of methylene groups) self-assembled monolayers to the surrounding solvent (water or oil) can be used to manipulate macroscopic wettability. In water, the surfaces modified with different hydroxythiols exhibit under-water superoleophobicity because of the exposure of hydroxyl groups. In contrast, surface wettability to water is affected by molecular orientation in oil, and the surface transits from under-oil superhydrophilicity to superhydrophobicity when n ≥ 4. This surface design can amplify the molecular-level conformational transition to the change of macroscopic surface wettability. Furthermore, on-demand oil/water separation relying on the under-liquid dual superlyophobicity is successfully demonstrated. This work may be useful in developing the materials with opposite superwettability.
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Affiliation(s)
- Zhihong Zhao
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
| | - Yuzhen Ning
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
| | - Xu Jin
- Research Institute of Petroleum Exploration and Development PetroChina, Beijing 100191, China
| | - Shuang Ben
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
| | - Jinlong Zha
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
| | - Bin Su
- School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074, China
| | - Dongliang Tian
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
| | - Kesong Liu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry, Beihang University, Beijing 100191, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
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14
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Liu S, Wang J. Eco-friendly and facile fabrication of polyimide mesh with underwater superoleophobicity for oil/water separation via polydopamine/starch hybrid decoration. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117228] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Shi M, Huang R, Qi W, Su R, He Z. Synthesis of superhydrophobic and high stable Zr-MOFs for oil-water separation. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125102] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Zhang N, Qi Y, Zhang Y, Luo J, Cui P, Jiang W. A Review on Oil/Water Mixture Separation Material. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02524] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ning Zhang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China
| | - Yunfei Qi
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China
| | - Yana Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210014, P. R. China
| | - Jialiang Luo
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210014, P. R. China
| | - Ping Cui
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, P. R. China
| | - Wei Jiang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210014, P. R. China
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17
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Ali N, Bilal M, Khan A, Ali F, Iqbal HM. Design, engineering and analytical perspectives of membrane materials with smart surfaces for efficient oil/water separation. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115902] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Huang L, Zhang L, Song J, Wang X, Liu H. Superhydrophobic Nickel-Electroplated Carbon Fibers for Versatile Oil/Water Separation with Excellent Reusability and High Environmental Stability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24390-24402. [PMID: 32281777 DOI: 10.1021/acsami.9b23476] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Superhydrophobic filtrating materials have been widely developed for rapid removal or collection of oils from oil/water mixture due to the increasing water pollution caused by oil spills and oil-contaminated wastewater. However, poor reusability, superhydrophobic failure in harsh environments, and that only heavy oil or light oil was separated from water seriously restricted their practical application. Herein, superhydrophobic carbon fibers were first fabricated using a novel nickel electroplating for versatile oil/water separation with excellent reusability and high environmental stability. The interconnected nanometer-scale nickel grains formed on the micrometer-scale fibers and fluoroalkylsilane molecules enabled the fibers to be superhydrophobic with the water contact angle (CA) of ∼159.1° and superoleophilic with the oil CA of ∼0°. The nickel coating contributed to the improvement of the bonding strength, tensile strength, and oxidation resistance of the fibers. The as-prepared fibers could be applied for the separation of heavy or light oil/water mixtures with separation efficiencies above 99.1%, during which the oil content in the separated water all remained below 78 ppm. The fibers also realized the highly efficient separation of dichloromethane and various harsh environmental solutions such as hot water, acid, alkali, and salt. The superhydrophobicity of the fluorinated nickel-coated carbon fibers still remained even after 100 cycles of separation and 24 months of storage in air, demonstrating outstanding durability of the fibers. These novel superhydrophobic carbon fibers had promising potentials for versatile oil/water separation in practical applications.
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Affiliation(s)
- Liu Huang
- Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, P. R. China
| | - Longlong Zhang
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jinlong Song
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, P. R. China
- Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China
| | - Xuyue Wang
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, P. R. China
| | - Hong Liu
- Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China
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19
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Zhang C, Gao J, Hankett J, Varanasi P, Borst J, Shirazi Y, Zhao S, Chen Z. Corn Oil-Water Separation: Interactions of Proteins and Surfactants at Corn Oil/Water Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4044-4054. [PMID: 32212710 DOI: 10.1021/acs.langmuir.0c00338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Purification and collection of industrial products from oil-water mixtures are commonly implemented processes. However, the efficiencies of such processes can be severely influenced by the presence of emulsifiers that induce the formation of small oil droplets dispersed in the mixtures. Understanding of this emulsifying effect and its counteractions which occur at the oil/water interface is therefore necessary for the improvement of designs of these processes. In this paper, we investigated the interfacial mechanisms of protein-induced emulsification and the opposing surfactant-induced demulsification related to corn oil refinement. At corn oil/water interfaces, the pH-dependent emulsifying function of zein protein, which is the major storage protein of corn, was elucidated by the surface/interface-sensitive sum frequency generation (SFG) vibrational spectroscopy technique. The effective stabilization of corn oil droplets by zein protein was illustrated and correlated to its ordered amide I group at the oil/water interface. Substantial decrease of this ordering with the addition of three industrial surfactants to corn oil-zein solution mixtures was also observed using SFG, which explains the surfactant-induced destabilization and coalescence of small oil droplets. Surfactant-protein interaction was then demonstrated to be the driving force for the disordering of interfacial proteins, either by disrupting protein layers or partially excluding protein molecules from the interface. The ordered zein proteins at the interface were therefore revealed to be the critical factor for the formation of corn oil-water emulsion.
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Affiliation(s)
- Chengcheng Zhang
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jinpeng Gao
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jeanne Hankett
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Prabodh Varanasi
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Joseph Borst
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Yaser Shirazi
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Shouxun Zhao
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Zhan Chen
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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20
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Li X, Shan H, Zhang W, Li B. 3D printed robust superhydrophilic and underwater superoleophobic composite membrane for high efficient oil/water separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116324] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Yousofi T, Rahmati A. Fe3O4@SiO2-BU core-shell as a new nanomagnetic gelator for oil recovery from water. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Lian Z, Xu J, Yu Z, Yu P, Ren W, Wang Z, Yu H. Bioinspired Reversible Switch between Underwater Superoleophobicity/Superaerophobicity and Oleophilicity/Aerophilicity and Improved Antireflective Property on the Nanosecond Laser-Ablated Superhydrophobic Titanium Surfaces. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6573-6580. [PMID: 31742380 DOI: 10.1021/acsami.9b17639] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this work, the bioinspired reversible switch between underwater superoleophobicity/superaerophobicity and oleophilicity/aerophilicity and improved antireflective property were successfully demonstrated on the nanosecond laser-structured titanium surfaces. Titanium materials were first transformed to be superhydrophobic after nanosecond laser ablation and low-temperature annealing treatments, showing oleophilicity/aerophilicity in water. If the surfaces were prewetted with absolute ethanol and then immersed into water, the surfaces showed superoleophobicity/superaerophobicity. More importantly, the underwater oleophilicity/aerophilicity of the surfaces could be easily recovered by natural drying, and the switch between the underwater superoleophobicity/superaerophobicity and oleophilicity/aerophilicity could be repeated many cycles. Moreover, based on the original antireflective performance of the surface of the laser-ablated micro/nanoscale structures, we demonstrated that the inspired improved antireflective property could be skillfully realized by the prewetting treatment. The developed bioinspired multifunctional materials provide a versatile platform for the potential applications, such as controlling oil droplets, bubbles, and optical behavior.
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23
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Xue CH, Tian QQ, Jia ST, Zhao LL, Ding YR, Li HG, An QF. The fabrication of mechanically durable and stretchable superhydrophobic PDMS/SiO2 composite film. RSC Adv 2020; 10:19466-19473. [PMID: 35515442 PMCID: PMC9054060 DOI: 10.1039/d0ra02029j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 05/06/2020] [Indexed: 01/09/2023] Open
Abstract
Stretchable superhydrophobic film was fabricated by casting silicone rubber polydimethylsiloxane (PDMS) on a SiO2 nanoparticle-decorated template and subsequent stripping. PDMS endowed the resulting surface with excellent flexibility and stretchability. The use of nanoparticles contributed to the sustained roughening of the surface, even under large strain, offering mechanically durable superhydrophobicity. The resulting composite film could maintain its superhydrophobicity (water contact angle ≈ 161° and sliding angle close to 0°) under a large stretching strain of up to 100% and could withstand 500 stretching–releasing cycles without losing its superhydrophobic properties. Furthermore, the obtained film was resistant to long term exposure to different pH solutions and ultraviolet light irradiation, as well as to manual destruction, sandpaper abrasion, and weight pressing. Stretchable superhydrophobic film was fabricated by casting silicone rubber polydimethylsiloxane (PDMS) on a SiO2 nanoparticle-decorated template and subsequent stripping.![]()
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Affiliation(s)
- Chao-Hua Xue
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
- National Demonstration Center for Experimental Light Chemistry Engineering Education
| | - Qian-Qian Tian
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Shun-Tian Jia
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Ling-Ling Zhao
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Ya-Ru Ding
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Hui-Gui Li
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Qiu-Feng An
- College of Chemistry and Chemical Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
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24
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Chen C, Chen B. Graphene oxide coated meshes with stable underwater superoleophobicity and anti-oil-fouling property for highly efficient oil/water separation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133777. [PMID: 31442728 DOI: 10.1016/j.scitotenv.2019.133777] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/02/2019] [Accepted: 08/04/2019] [Indexed: 05/25/2023]
Abstract
Developing underwater superoleophobic filtration materials with robust stability and excellent anti-oil-fouling performance in harsh environments is desired for high efficiency oil/water separation. In this work, irregular hydrophilic graphene oxide (GO) was adopted as a coating material to modify oxidized copper mesh with desired hierarchical surface roughness and hydrophilic composition through a novel in situ copper ion induced crosslinking method. The combination of microscale copper wires and nanoscale hydrophilic GO sheets endowed the resultant GO coated oxidized copper mesh (GO@CuO) with unique underwater superoleophobicity and excellent anti-oil-fouling property. Moreover, the mesh exhibited excellent stability in corrosive solutions with no apparent variations in wetting properties, indicating its good stability. The as-prepared GO@CuO mesh can be applied to separate oil/water mixtures with high efficiency (>99.49%) and good reusability. Due to the excellent anti-oil-fouling property, high separation efficiency, and good stability, the as-prepared underwater superoleophobic mesh could find broad applications in oil/water separations.
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Affiliation(s)
- Cheng Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
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25
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Li X, You L, Song Y, Gao L, Liu Y, Chen W, Mao L. Preparation of a Phenolic-Resin-Based Polymer Sponge Composed of Intertwined Nanofibers with Tunable Wettability for High-Efficiency Separation of Oil-Water Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14902-14912. [PMID: 31642685 DOI: 10.1021/acs.langmuir.9b02750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nowadays, as the combination of water pollution and water shortage causes severe environmental and social issues, the special wettable materials, which can be selectively wetted by either water or oil, attract tremendous attention for high-efficiency separation of oil-water mixtures. Herein, we prepare a phenolic-resin-based sponge composed of intertwined nanofibers via a simple hydrothermal method. The wettability of the as-prepared polymer is tuned readily by controlling only the hydrothermal temperature. In the case of the hydrothermal temperature below 210 °C, the polymer sponge demonstrates superhydrophilic and underwater superoleophobic properties, affording the separation of oil-in-water emulsions. However, as the hydrothermal temperature increases above 220 °C, the resulting bulk phenolic-resin-based material becomes superhydrophobic and underoil superhydrophobic, realizing a high filtration flux of 6147 L m-2 h-1 for the separation of water-in-oil emulsions driven by an external pressure of 40 kPa. This provides a feasible platform for future practical applications. The wettability transition depending on the hydrothermal temperature is discussed in terms of the reaction mechanism. In addition, the stability and breakthrough pressure are also addressed from the viewpoints of thermodynamic and fluid mechanics, respectively.
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26
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Wang J, Wang S. A simple and eco-friendly route for fabricating iron-based coating on metal mesh for efficient oil/water separation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.081] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Xing R, Yang B, Huang R, Qi W, Su R, Binks BP, He Z. Three-Dimensionally Printed Bioinspired Superhydrophobic Packings for Oil-in-Water Emulsion Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12799-12806. [PMID: 31475528 DOI: 10.1021/acs.langmuir.9b02131] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The separation of oil-water emulsions has attracted considerable attention in recent years. The main challenge is to find new cost-effective ways to develop a separation technology that has the potential for scaling up treatment. In this study, benefitting from the idea in traditional chemical engineering processes, we report on three-dimensionally printed superhydrophobic poly(lactic acid) (PLA) packings for oil-in-water emulsion separation. Superhydrophobicity was achieved through a bioinspired modification process including selective solvent etching and nanoparticle decoration. The obtained superhydrophobic PLA packing has an air-water contact angle of 150° and a water adhesion force of 22 μN. A maximum separation efficiency of 95% was achieved while retaining a relatively high flux of 7.5 kL m-2 h-1 by tailoring the internal geometry. Our approach demonstrates a promising method to fabricate packings with user-defined and functional features. The relatively low-cost and efficient fabrication process is beneficial in industrial applications.
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Affiliation(s)
| | | | | | | | | | - Bernard P Binks
- Department of Chemistry and Biochemistry , University of Hull , Hull HU6 7RX , U.K
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28
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Shami Z, Delbina S, Amininasab SM. Wool-Like Fibrous Nonwoven Mesh with Ethanol-Triggered Transition between Antiwater and Antioil Superwetting States for Immiscible and Emulsified Light Oil-Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10491-10504. [PMID: 31287702 DOI: 10.1021/acs.langmuir.9b01032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Superwetting antiwater and antioil textiles are not only very attractive for efficient and cost-effective oil-water separation but also very challenging to be prepared. A well-designed polystyrene wool-like fibrous mesh was fabricated by a controlled electrospinning setup to provide simple and quick reversible ethanol-triggered switching between antiwater and antioil superwetting states in various media such as air, water, and oil. Additionally, it exhibits a long-term stability against acid, alkaline, and salt at high concentrations. Such characteristics will prove unusual capabilities for controllable gravity-driven separation of both immiscible and emulsified oil-water mixtures with a separation efficiency more than 99.0%, as well as a prolonged antifouling property and an excellent recyclability; all will be advantageous for technical applications including oil removing and water removing. Furthermore, light oil-polluted water and water-soluble pollutants can be simultaneously cleaned well by the antioil mesh acting in the water-removing mode.
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Affiliation(s)
- Zahed Shami
- Department of Chemistry, Faculty of Science , University of Kurdistan , Pasdaran Boulevard , Sanandaj 66177-15175 , Iran
| | - Somayeh Delbina
- Department of Chemistry, Faculty of Science , University of Kurdistan , Pasdaran Boulevard , Sanandaj 66177-15175 , Iran
| | - Seyed Mojtaba Amininasab
- Department of Chemistry, Faculty of Science , University of Kurdistan , Pasdaran Boulevard , Sanandaj 66177-15175 , Iran
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29
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A free-standing superhydrophobic film for highly efficient removal of water from turbine oil. Front Chem Sci Eng 2019. [DOI: 10.1007/s11705-018-1754-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Huang A, Kan CC, Lo SC, Chen LH, Su DY, Soesanto JF, Hsu CC, Tsai FY, Tung KL. Nanoarchitectured design of porous ZnO@copper membranes enabled by atomic-layer-deposition for oil/water separation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.093] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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31
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Liu Y, Liu N, Qu R, Zhang W, Wei Y, Feng L. PG-PEI-Ag NPs-Decorated Membrane for Pretreatment of Laboratory Wastewater: Simultaneous Removal of Water-Insoluble Organic Solvents and Water-Soluble Anionic Organic Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7680-7690. [PMID: 31099583 DOI: 10.1021/acs.langmuir.9b00515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Generally, waste liquid in laboratory can be roughly classified into organic wastewater and inorganic wastewater. However, in some experiments, organic phase and water phase are inevitably mixed together, leaving the postclassification and disposal intractable. Traditionally, we used methods like distillation and extraction to separate these two phases, however, always consuming significant amounts of labor and time and meanwhile having an unsatisfactory separation efficiency. Here, we proposed an improved processing method with a propyl gallate (PG)-polyethyleneimine (PEI)-Ag nanoparticles (NPs)-decorated membrane, possessing the special wettability designed for organic and water phase separation. Accordingly, various kinds of organic solvents/water mixtures were tested, where the PG-PEI-Ag NPs-decorated membrane was used like a common filter paper, fixed onto the funnel of the waste liquid barrel. Afterward, the two phase mixtures were poured onto the membrane; as a result, the organic phase was blocked above while the water phase was left below. All kinds of organic solvents/water mixtures showed higher than 99.90% removal efficiency. Besides, the membrane can remove water-soluble anionic organic molecules through electrostatic interaction. Thus, along the phase separation, anionic organic molecules in water can be removed simultaneously. This pretreatment of lab wastewater with the PG-PEI-Ag NPs-decorated membrane is simple and efficient, relieving the pressure of postcollection and disposal to some extent.
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Affiliation(s)
- Ya'nan Liu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Na Liu
- Institute of Materials for Energy and Environment, School of Materials Science and Engineering , Qingdao University , Qingdao 266071 , P. R. China
| | - Ruixiang Qu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Weifeng Zhang
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yen Wei
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Lin Feng
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
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32
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Yong J, Yang Q, Guo C, Chen F, Hou X. A review of femtosecond laser-structured superhydrophobic or underwater superoleophobic porous surfaces/materials for efficient oil/water separation. RSC Adv 2019; 9:12470-12495. [PMID: 35515857 PMCID: PMC9063668 DOI: 10.1039/c8ra10673h] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/09/2019] [Indexed: 01/08/2023] Open
Abstract
Oil/water separation (OWS) technology has become an increasingly crucial tool to protect the environment and reduce the economic losses caused by the discharge of oily wastewater and oil spills. Recently, porous materials with superwettability have been applied in effective OWS and have achieved tremendous success. Herein, we review recent advancements of OWS utilizing femtosecond (fs) laser-structured superhydrophobic or underwater superoleophobic porous materials. We will review the enabling materials processing and treatment methods, their surface wettability, the separating methods and processes, and the separation mechanisms. Inspired by lotus leaves and fish scales, superhydrophobic and underwater superoleophobic properties are artificially achieved on substrate surfaces by fs laser processing. By using fs laser-structured superwetting porous materials, various oil/water mixtures (OWMs) are successfully separated through different separation methods. Presently, the research of fs laser-based OWS is still in its infancy. We will also discuss the current challenges and future prospects in this emerging field. It is expected that the advanced features of fs laser microfabrication will lead to exciting applications for OWS.
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Affiliation(s)
- Jiale Yong
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
- The Institute of Optics, University of Rochester Rochester New York 14627 USA
| | - Qing Yang
- School of Mechanical Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
| | - Chunlei Guo
- The Institute of Optics, University of Rochester Rochester New York 14627 USA
| | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
| | - Xun Hou
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
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33
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Chen C, Weng D, Mahmood A, Chen S, Wang J. Separation Mechanism and Construction of Surfaces with Special Wettability for Oil/Water Separation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11006-11027. [PMID: 30811172 DOI: 10.1021/acsami.9b01293] [Citation(s) in RCA: 208] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Oil leakage and the discharge of oil/water mixtures by domestic and industrial consumers have caused not only severe environmental pollution and a threat to all species in the ecosystem but also a huge waste of precious resources. Therefore, the separation of oil/water mixtures, especially stable emulsion, has become an urgent global issue. Recently, materials containing a special wettability feature for oil and water have drawn immense attention because of their potential applications for oil/water separation application. In this paper, we systematically summarize the fundamental theories, separation mechanism, design strategies, and recent developments in materials with special wettability for separating stratified and emulsified oil/water mixtures. The related wetting theories that unveil the physical underlying mechanism of the oil/water separation mechanism are proposed, and the practical design criteria for oil/water separation materials are provided. Guided by the fundamental design criteria, various porous materials with special wettability characteristics, including those which are superhydrophilic/underwater superoleophobic, superhydrophobic/superoleophilic, and superhydrophilic/in-air superoleophobic, are systemically analyzed. These superwetting materials are widely employed to separate oil/water mixtures: from stratified oil/water to emulsified ones. In addition, the materials that implement the demulsification of emulsified oil/water mixtures via the ingenious design of the multiscale surface morphology and construction of special wettability are also discussed. In each section, we introduce the design ideas, base materials, preparation methods, and representative works in detail. Finally, the conclusions and challenges for the oil/water separation research field are discussed in depth.
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Affiliation(s)
- Chaolang Chen
- Sate Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , P. R. China
| | - Ding Weng
- Sate Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , P. R. China
| | - Awais Mahmood
- Sate Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , P. R. China
| | - Shuai Chen
- Sate Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , P. R. China
| | - Jiadao Wang
- Sate Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , P. R. China
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34
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Bruel C, Queffeulou S, Darlow T, Virgilio N, Tavares JR, Patience GS. Experimental methods in chemical engineering: Contact angles. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23408] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Charles Bruel
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
| | - Salomé Queffeulou
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
| | - Theron Darlow
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
| | - Nick Virgilio
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
| | - Jason R. Tavares
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
| | - Gregory S. Patience
- Department of Chemical EngineeringPolytechnique Montréal C.P. 6079, Succ. CV Montréal, H3C 3A7, QC Canada
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35
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Liu YQ, Jiao ZZ, Zhang YL, Liu Y, Jiang HB, Han DD, Sun HB. Kraft Mesh Origami for Efficient Oil-Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:815-823. [PMID: 30563345 DOI: 10.1021/acs.langmuir.8b03541] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Inspired from fish scales that exhibit unique underwater superoleophobicity, artificial porous membranes featuring similar wettability have been successfully developed for oil-water separation. However, most of the superoleophobic meshes are workable only for underwater oil/water separation and become disabled in air. In this article, we reported the facile fabrication of underwater superoleophobic kraft mesh and demonstrated efficient oil-water separation using kraft mesh origamis. Kraft paper that features porosity, natural hydrophilicity, and relatively high elasticity and tear resistance has been found to be an ideal candidate for developing underwater superoleophobic origami. Direct laser drilling has been employed to make microhole arrays on the kraft paper, forming a flexible mesh. The hydrophilic nature and the hierarchical microstructures that consist of microhole arrays and porous microfiber networks make the resultant kraft mesh superoleophobic underwater, enabling oil-water separation. More importantly, the kraft mesh can retain a large amount of water (2.5 times its weight under dry conditions) owing to its porous and hydrophilic structure. Thus, the wet kraft mesh became a slippery surface for oil droplets when it was taken out of the water. This unique feature makes it possible to directly fish out oil droplets from water using a simple kraft mesh origami. Direct laser drilling of paper mesh for flexible origami may open up a new route to the rational design and fabrication of oil-water separation devices.
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Affiliation(s)
- Yu-Qing Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Zhi-Zhen Jiao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Yong-Lai Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Yan Liu
- Key Laboratory of Bionic Engineering (Ministry of Education) , Jilin University , Changchun 130022 , China
| | - Hao-Bo Jiang
- Key Laboratory of Bionic Engineering (Ministry of Education) , Jilin University , Changchun 130022 , China
| | - Dong-Dong Han
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Hong-Bo Sun
- State Key Lab of Precision Measurement and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
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36
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Zhang W, Liu N, Xu L, Qu R, Chen Y, Zhang Q, Liu Y, Wei Y, Feng L. Polymer-Decorated Filter Material for Wastewater Treatment: In Situ Ultrafast Oil/Water Emulsion Separation and Azo Dye Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13192-13202. [PMID: 30338684 DOI: 10.1021/acs.langmuir.8b02834] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Aiming to realize the wastewater treatment of various pollutants simultaneously, a dual-functional poly(ether amine)-polydopamine (PEA-PDA)-modified filter material was fabricated in this work for in situ separation of stable oil-in-water emulsion and adsorption of anionic azo dyes. PEA and PDA could be copolymerized via the Michael addition reaction on a polyurethane sponge substrate firmly. The as-prepared filter shows superhydrophilic and underwater superoleophobic wettability. After being squeezed in a glass tube, the material could separate different kinds of stabilized oil-in-water emulsions with high flux and efficiency. Besides, the PEA-PDA copolymer endows the material with the ability to adsorb large amounts of anionic azo dyes during the separation of emulsions with good adsorption capacity. Moreover, adsorbed dyes in the filter material could be easily desorbed in base aqueous solution and the whole process is conducted under gravity without external aid. This dual-functional material shows great potential for the application in industrial field because of its ability for the complex wastewater treatment.
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Affiliation(s)
- Weifeng Zhang
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Na Liu
- Institute of Materials for Energy and Environment, School of Materials Science and Engineering , Qingdao University , Qingdao 266071 , P. R. China
| | - Liangxin Xu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Ruixiang Qu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yuning Chen
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Qingdong Zhang
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yanan Liu
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Yen Wei
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
| | - Lin Feng
- Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China
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Yong J, Huo J, Chen F, Yang Q, Hou X. Oil/water separation based on natural materials with super-wettability: recent advances. Phys Chem Chem Phys 2018; 20:25140-25163. [PMID: 30256352 DOI: 10.1039/c8cp04009e] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The frequency of oil spills and the increasing amount of oily sewage not only cause serious water pollution as well as a lot of ecological problems but also result in huge economic losses. To address such problems, developing advanced technologies and materials for achieving efficient oil/water separation is a critical way and emerging as a hot research topic nowadays. Herein, we have reviewed the recent developments in oil/water separation by using superwetting porous materials, mainly focusing on natural materials. By using natural materials as examples, we show how to use superwetting porous materials to separate different mixtures of water and oil, including the inherent superwettability of the natural materials, separating method/process, and separation mechanism. Natural superwetting materials are usually low-cost and eco-friendly, and can be easily obtained, so oil/water separation based on natural materials has great promise to address the above-mentioned globally recognized oil contamination challenge. In addition, these natural examples seem more attractive to the general researcher who is new to this field as well as the expert and even the public, since natural materials look more interesting than artificial complex materials. We believe our review will help beginners better understand the significance, application value, mechanism and principle of oil/water separation by superwetting porous materials.
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Affiliation(s)
- Jiale Yong
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
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Hu L, Zhang L, Wang D, Lin X, Chen Y. Fabrication of biomimetic superhydrophobic surface based on nanosecond laser-treated titanium alloy surface and organic polysilazane composite coating. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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