151
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Zhang J, Wang P, Wen H, Raza S, Zhu Z, Huang W, Liang L, Liu C. Polymer brush-grafted cotton with petal-like microstructure as superhydrophobic and self-cleaning adsorbents for oil/water separation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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152
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Zhu Y, Lu Y, Yu H, Jiang G, Zhao X, Gao C, Xue L. Super-hydrophobic F-TiO2@PP membranes with nano-scale “coral”-like synapses for waste oil recovery. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118579] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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153
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Yin X, He Y, Li H, Ma X, Zhou L, He T, Li S. One-step in-situ fabrication of carbon nanotube/stainless steel mesh membrane with excellent anti-fouling properties for effective gravity-driven filtration of oil-in-water emulsions. J Colloid Interface Sci 2021; 592:87-94. [PMID: 33647565 DOI: 10.1016/j.jcis.2021.02.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 11/18/2022]
Abstract
The occurrence of membrane fouling has resulted in limited wastewater treatment applications. The development of superhydrophilic-underwater superoleophobic materials has received significant attention owing to their good anti-fouling properties. However, to fabricate such materials need costly regents and tedious steps. Thus, developing a one-step process to prepare a low-cost material for oil/water separation is still desired. In this study, bio-inspired from an arachnid, inorganic carbon nanotube stainless steel meshes (CNT@SSMs) having superhydrophilic-underwater superoleophobic and excellent anti-fouling properties and a unique fiber structure were fabricated via a one-step thermal chemical vapor deposition method. The CNT@SSMs had a small pore size enabling a high water flux of 10,639 L m-2h-1 and the separation of oily wastewater, including various emulsions, at a high rejection ratio of >98.89%. As a result of its excellent chemical stability under high temperatures, a broad pH range, and saline environments, the CNT@SSM has the potential to be used in extreme conditions. In summary, these CNT@SSMs are easy to fabricate and are low-cost as a result of inexpensive reagents involved. Moreover, these novel superwetting membranes are promising candidates for treatment of hazardous oily wastewater.
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Affiliation(s)
- Xiangying Yin
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Yi He
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China.
| | - Hongjie Li
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Xiaoyu Ma
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Liang Zhou
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Teng He
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Shuangshuang Li
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
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154
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Zhu Z, Jiang L, Liu J, He S, Shao W. Sustainable, Highly Efficient and Superhydrophobic Fluorinated Silica Functionalized Chitosan Aerogel for Gravity-Driven Oil/Water Separation. Gels 2021; 7:66. [PMID: 34199558 PMCID: PMC8293147 DOI: 10.3390/gels7020066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 11/16/2022] Open
Abstract
A superhydrophobic fluorinated silica functionalized chitosan (F-CS) aerogel is constructed and fabricated by a simple and sustainable method in this study in order to achieve highly efficient gravity-driven oil/water separation performance. The fluorinated silica functionalization invests the pristine hydrophilic chitosan (CS) aerogel with promising superhydrophobicity with a water contact angle of 151.9°. This novel F-CS aerogel possesses three-dimensional structure with high porosity as well as good chemical stability and mechanical compression property. Moreover, it also shows striking self-cleaning performance and great oil adsorption capacity. Most importantly, the as-prepared aerogels exhibits fast and efficient separation of oil/water mixture by the gravity driven process with high separation efficiency. These great performances render the prepared F-CS aerogel a good candidate for oil/water separation in practical industrial application.
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Affiliation(s)
- Zhongjie Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China;
| | - Lei Jiang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.J.); (J.L.); (S.H.)
| | - Jia Liu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.J.); (J.L.); (S.H.)
| | - Sirui He
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.J.); (J.L.); (S.H.)
| | - Wei Shao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China;
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.J.); (J.L.); (S.H.)
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155
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He L, Lei W, Liu D. One-step facile fabrication of mechanical strong porous boron nitride nanosheets–polymer electrospun nanofibrous membranes for repeatable emulsified oil/water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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156
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Usman MA, Khan AY. Candle soot particles-modified macroporous monoliths for efficient separation of floating oil/water and stable emulsions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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157
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He N, Li L, Chen J, Zhang J, Liang C. Extraordinary Superhydrophobic Polycaprolactone-Based Composite Membrane with an Alternated Micro-Nano Hierarchical Structure as an Eco-friendly Oil/Water Separator. ACS APPLIED MATERIALS & INTERFACES 2021; 13:24117-24129. [PMID: 33988364 DOI: 10.1021/acsami.1c03019] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Extraordinary superhydrophobic polycaprolactone (PCL) composite membranes with an alternated hierarchical micro-nano structure were designed by addition of SiO2 aerogel. The highest water contact angle (WCA) of 166.8 ± 1.5° was obtained when SiO2 aerogel content was 0.5% (PCL/SiO2-a0.5) in the PCL composite membrane, which was higher than other reported polymer-based membranes. SiO2 aerogel lowered PCL composite membrane's surface energy. The triple curvature structure composed of microspheres, nanospheres, and nanofibers produced on PCL/SiO2-a0.5 membranes endowed the excellent roughness of the surface. Also, the inner structure of the PCL/SiO2-a0.5 composite membrane composed of micro-nano spheres, nanofibers, and microfibers increased the porosity of the separation membrane, which would provide more adsorption space. The PCL/SiO2-a0.5 composite membrane as a separator for surfactant-stabilized emulsions of water-in-oil showed ultrahigh separation flux and efficiency. Meanwhile, the PCL/SiO2-a0.5 composite membrane had an outstanding chemical resistance, self-cleaning ability, and good reusability. The composite membranes reported in this work as eco-friendly separation materials possessed all these characters in oil/water separation. This research proposed a very simple method to design eco-friendly high-efficiency separators through the construction of the alternated micro-nano hierarchical structure.
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Affiliation(s)
- Nana He
- Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Lili Li
- Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Jiaqi Chen
- Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Junhao Zhang
- Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Ce Liang
- Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130022, China
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158
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Cai Y, Wu Y, Yang F, Gan J, Wang Y, Zhang J. Wood Sponge Reinforced with Polyvinyl Alcohol for Sustainable Oil-Water Separation. ACS OMEGA 2021; 6:12866-12876. [PMID: 34056438 PMCID: PMC8154230 DOI: 10.1021/acsomega.1c01280] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/23/2021] [Indexed: 05/14/2023]
Abstract
The excellent oil absorption capacity and sustainability advantages of adsorbent-type oil-absorbing products have become the primary method to deal with marine oil spills and organic pollution at this stage, especially aerogel products. However, this type of material also has some problems, such as secondary pollution during nanocellulose preparation. Lignin and hemicellulose were removed from the natural wood, and followed by the action of freeze drying, the wood sponge was prepared. Then, followed by immersing the wood sponge into polyvinyl alcohol solution (PVA) and dipping it in polydimethylsiloxane solution, the target PVA-reinforced wood sponge with better mechanical compressibility and hydrophobic properties was obtained. The new wood sponge showed high mechanical compressibility (reversible compression rate of 40%) and elastic recovery rate (the height retention rate was about 100% after 200 cycles of 30% strain). It also showed excellent hydrophobic and oleophilic properties, and the water contact angle was up to 138°, and the oil absorption capacity was 25 g·g-1. The ability of oil absorption can be recovered by compression, and the high absorption rate was maintained after 50 cycles. The wood sponge has great potential in reusable oil-water separation due to low cost, high efficiency, high performance, biodegradability, environmental friendliness, and other advantages.
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Affiliation(s)
- Yijing Cai
- College
of Furnishings and Industrial Design, Nanjing
Forestry University, Nanjing 210037, China
- Co-Innovation
Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Yan Wu
- College
of Furnishings and Industrial Design, Nanjing
Forestry University, Nanjing 210037, China
- Co-Innovation
Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Feng Yang
- Fashion
Accessory Art and Engineering College, Beijing
Institute of Fashion Technology, Beijing 100029, China
| | - Jian Gan
- College
of Furnishings and Industrial Design, Nanjing
Forestry University, Nanjing 210037, China
- Co-Innovation
Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Yajing Wang
- College
of Furnishings and Industrial Design, Nanjing
Forestry University, Nanjing 210037, China
- Co-Innovation
Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Jilei Zhang
- Department
of Sustainable Bioproducts, Mississippi
State University, Oxford, Mississippi State MS 39762, United States
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159
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Liu Y, Xu P, Ge W, Lu C, Li Y, Niu S, Zhang J, Feng S. Synchronous oil/water separation and wastewater treatment on a copper-oxide-coated mesh. RSC Adv 2021; 11:17740-17745. [PMID: 35480222 PMCID: PMC9033239 DOI: 10.1039/d1ra02334a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/01/2021] [Indexed: 12/22/2022] Open
Abstract
Despite remarkable progress in oil/water separation and wastewater treatment, the ability to carry out the two processes in a synchronous manner has remained difficult. Here, synchronous oil/water separation and wastewater treatment were proposed on mesh surfaces coated with copper-oxide particles, which possess superwetting and catalytic properties. The superwetting performance generates additional pressure to achieve the permselectivity of the designed mesh, on which the oil phase is selectively repelled while the water phase passes though easily. Moreover, the catalytic performance of the copper oxide forms reactive oxygen species to purify the water during oil/water separation process. We show that the oil/water separation and catalytic degradation efficiencies for organic pollutants can reach more than 99% by adjusting the content of copper oxide on the mesh surfaces. Such a unique design for integrating multifunctionality on single mesh surfaces strongly underpins the synchronization of oil/water separation and wastewater treatment, which will provide a new insight for separating pure water from industrial oil/water mixtures. An integrated multifunctional copper-oxide-coated mesh was designed via facile immersing and burning methods, which manifests synchronous oil/water separation and wastewater treatment.![]()
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Affiliation(s)
- Yahua Liu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Peng Xu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Wenna Ge
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Chenguang Lu
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Yunlai Li
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
| | - Shichao Niu
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University Changchun 130022 China
| | - Junqiu Zhang
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University Changchun 130022 China
| | - Shile Feng
- Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian 116024 China
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160
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Wang B, Chen C, Li Z, Wu J, Liu X, Wang J. One-step fabrication superhydrophobic sand filter for capillary-driven separation of water-in-oil emulsions. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.07.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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161
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Teng D, Zhao T, Xu Y, Zhang X, Zeng Y. The zein-based fiber membrane with switchable superwettability for on-demand oil/water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118393] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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162
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Yang S, Chen L, Liu S, Hou W, Zhu J, Zhao P, Zhang Q. Facile and sustainable fabrication of high-performance cellulose sponge from cotton for oil-in-water emulsion separation. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124408. [PMID: 33168311 DOI: 10.1016/j.jhazmat.2020.124408] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/16/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
Given complexity and diversity of oily wastewater, developing highly efficient separation materials through green and facile strategy are urgently needed. Herein, a smart strategy is demonstrated to transform raw cotton into uniform cellulose sponge for separation oil-in-water emulsion. The raw cotton is directly treated in zinc chloride aqueous solutions through a controllable dissolution process. After regeneration without any further chemical modification and freeze drying, the evolved cellulose sponge, which is composed of partially dissolved cotton fiber and exfoliated regenerated cellulose, exhibits interesting three-dimensional (3D) interconnected hierarchical porous network structure and stable wettability of superoleophobicity (θoil>150º) under water. Cellulose sponge has excellent underwater superoleophobicity and antifouling property due to the natural hydrophilicity of cellulose. Based on the beneficial 3D hierarchical structure and superwettability, the cellulose sponge can separate highly emulsified oil-in-water emulsions with efficiency up to 99.2% solely under the driving of gravity. Our strategy provides a generic way to convert cellulose-based materials into cellulose porous materials with excellent permeability, separation efficiency, antifouling, and reusability property for oil/water emulsions separation. This economical, environmentally friendly and functional cellulose sponge not only allows natural cotton resources to be used rationally with high value-added, but also effectively solves the problems of oily wastewater.
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Affiliation(s)
- Sudong Yang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, PR China.
| | - Lin Chen
- Institute for Advanced Study, Chengdu University, Chengdu 610106, PR China.
| | - Shuai Liu
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, PR China
| | - Wenjie Hou
- Shanxi Coal and Chemical Technology Institute Co., Ltd., Xi'an 710070, PR China
| | - Jie Zhu
- Institute for Advanced Study, Chengdu University, Chengdu 610106, PR China
| | - Peng Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, PR China
| | - Qian Zhang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, PR China
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163
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Li H, Zhu L, Zhu X, Chao M, Xue J, Sun D, Xia F, Xue Q. Dual-functional membrane decorated with flower-like metal-organic frameworks for highly efficient removal of insoluble emulsified oils and soluble dyes. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124444. [PMID: 33168320 DOI: 10.1016/j.jhazmat.2020.124444] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/16/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
High-performance membranes for simultaneously removing insoluble emulsified oils and soluble organic dyes are in urgently demand for industrial wastewater treatment, but are strictly limited by the single-function and serious fouling problem. Herein, a dual-functional membrane with excellent antifouling ability for efficiently dye/oil/water emulsion separation has been fabricated by growing flower-like metal-organic frameworks (MIL-53-OH) on polyacrylonitrile/polyethyleneimine membrane for the first time. The synergistic effect of the hierarchical flower-like structure and superhydrophilic compositions with high hydration ability endows the obtained membrane with a stable and ultra-strong oil-repelling hydration layer, thus imparting the membrane formidable oil resistance and exceptional oil/water emulsion separation performance (permeate flux>4000 L m-2 h-1). What's more, the superhydrophilic compositions render the membrane an excellent dye remove capacity by electrostatic forces and hydrogen bonding. The membrane rejections for dyes and emulsified oils are above 99%, and the dyes and oils on the used membrane can be easily washed away with methanol and water, respectively, confirming that the membrane has desirable recyclability. Besides, the membrane possesses excellent mechanical performance and outstanding acid and alkali resistance, indicating that the membrane is a promising candidate for removing insoluble emulsified oils and soluble dyes.
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Affiliation(s)
- Hui Li
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Lei Zhu
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China.
| | - Xu Zhu
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Ma Chao
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Jinwei Xue
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Daofeng Sun
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Fujun Xia
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Qingzhong Xue
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China.
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164
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Baggio A, Doan HN, Vo PP, Kinashi K, Sakai W, Tsutsumi N, Fuse Y, Sangermano M. Chitosan-Functionalized Recycled Polyethylene Terephthalate Nanofibrous Membrane for Sustainable On-Demand Oil-Water Separation. GLOBAL CHALLENGES (HOBOKEN, NJ) 2021; 5:2000107. [PMID: 33854791 PMCID: PMC8025399 DOI: 10.1002/gch2.202000107] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/07/2020] [Indexed: 05/14/2023]
Abstract
The preservation of marine ecosystems is one of the most severe challenges at present. In particular, oil-water separation from oil spills and oily wastewater is important. For this reason, a low-cost, effective, and sustainable polymeric solution is in high demand. In this work, a controlled-wettability membrane for selective separation of oil-water mixtures and emulsions is developed. The nanofibrous membrane is prepared via a facile and cost-effective electrospinning technique using environmentally sustainable materials, such as recycled polyethylene terephthalate and chitosan. The effect of different concentrations of chitosan on the morphology, chemical composition, mechanical properties, wettability, and separation performance of the membrane is evaluated. The membranes exhibited underoil superhydrophobic and underwater superoleophobic behavior, which is essential to perform the selective separation. In fact, the designed filter has competitive antifouling properties (oil intrusion pressure > 45 kPa) and showed high heavy- and light-oil/water separation efficiencies (>95%) both for emulsions and immiscible mixtures.
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Affiliation(s)
- Andrea Baggio
- Master's Program of Innovative MaterialsKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
- Master's Program of Materials EngineeringPolitecnico di TorinoCorso Duca degli Abruzzi 24Torino10129Italy
| | - Hoan N. Doan
- Doctor's Program of Materials ChemistryKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Phu P. Vo
- Doctor's Program of Materials ChemistryKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Kenji Kinashi
- Faculty of Materials Science and EngineeringKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Wataru Sakai
- Faculty of Materials Science and EngineeringKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Naoto Tsutsumi
- Faculty of Materials Science and EngineeringKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Yasuro Fuse
- Center of Environmental ScienceKyoto Institute of TechnologyMatsugasaki, SakyoKyoto606‐8585Japan
| | - Marco Sangermano
- Department of Applied Science and Technology (DISAT)Politecnico di TorinoCorso Duca degli Abruzzi 24Torino10129Italy
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165
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Wang SY, Fang LF, Zhu BK, Matsuyama H. Enhancing the antifouling property of polymeric membrane via surface charge regulation. J Colloid Interface Sci 2021; 593:315-322. [PMID: 33744540 DOI: 10.1016/j.jcis.2021.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 02/07/2023]
Abstract
In this study, positively charged monomers were grafted onto negatively charged membranes via UV radiation to improve the antifouling/antibiofouling properties of the polymeric membrane and the stability of the modification layer. The surface properties, morphologies, antifouling and antibiofouling properties, and stability of the modified membranes were systematically characterized. Results indicated that the introduction of [2-(methacryloyloxy) ethyl] trimethylammonium chloride (MTAC) monomers onto polyethersulfone (PES)/sulfonated polyethersulfone (SPES) membranes effectively increased the surface hydrophilicity. Meanwhile, the surfaces were neutralized with ~0 mV zeta potential in pH 3-10. Moreover, the formation of a polyampholytic copolymer and the antibacterial ability of MTAC considerably improved the antibiofouling properties of the modified membranes. The MTAC-grafted PES/SPES membranes showed excellent antifouling/antibiofouling properties during the treatment of various types of wastewater, including bovine serum albumin solution, oil/water emulsion, and bacterial suspension. Therefore, this study provides a simple and effective method of constructing stable and antifouling membranes for sustainable water treatment.
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Affiliation(s)
- Sheng-Yao Wang
- Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan
| | - Li-Feng Fang
- Engineering Research Center for Membrane and Water Treatment (Ministry of Education), Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Bao-Ku Zhu
- Engineering Research Center for Membrane and Water Treatment (Ministry of Education), Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hideto Matsuyama
- Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Rokkodaicho 1-1, Nada, Kobe 657-8501, Japan.
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166
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Gavazzoni C, Silvestrini M, Brito C. Modeling oil-water separation with controlled wetting properties. J Chem Phys 2021; 154:104704. [PMID: 33722045 DOI: 10.1063/5.0041070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Several oil-water separation techniques have been proposed to improve the capacity of cleaning water. With the technological possibility of producing materials with antagonist wetting behavior, for example, a substrate that repels water and absorbs oil, the understanding of the properties that control this selective capacity has increased with the goal of being used as the mechanism to separate mixed liquids. Besides the experimental advance in this field, less is known from the theoretical side. In this work, we propose a theoretical model to predict the wetting properties of a given substrate and introduce simulations with a four-spin cellular Potts model to study its efficiency in separating water from oil. Our results show that the efficiency of the substrates depends both on the interaction between the liquids and on the wetting behavior of the substrates itself. The water behavior of the droplet composed of both liquids is roughly controlled by the hydrophobicity of the substrate. Predicting the oil behavior, however, is more complex because the substrate being oleophilic does not guarantee that the total amount of oil present on the droplet will be absorbed by the substrate. For both types of substrates considered in this work, pillared and porous with a reservoir, there is always an amount of reminiscent oil on the droplet, which is not absorbed by the substrate due to the interaction with the water and the gas. Both theoretical and numerical models can be easily modified to analyze other types of substrates and liquids.
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Affiliation(s)
- Cristina Gavazzoni
- Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, CEP 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Marion Silvestrini
- Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, CEP 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Carolina Brito
- Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, CEP 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
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167
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Wu J, He Y, Zhou L, Yin X, Zhang L, Chen J, Li Z, Bai Y. TiO 2@HNTs Robustly Decorated PVDF Membrane Prepared by a Bioinspired Accurate-Deposition Strategy for Complex Corrosive Wastewater Treatment. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11320-11331. [PMID: 33625835 DOI: 10.1021/acsami.1c00697] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As industrialization has spread all around the world, the problems of water pollution such as offshore oil spill and industrial sewage discharge have spread with it. Although many new separation materials have been successfully developed to deal with this crisis, a large number of water treatment materials only focus on the treatment of classified single water pollutant under mild conditions. It is a great challenge to treat soluble contaminants such as water-soluble dyes and insoluble contaminants, for example, emulsified oils simultaneously in a strong corrosive environment. Herein, in this work, corrosive resistance and multifunctional surface on a commercial polyvinylidene difluoride (PVDF) membrane via a tunicate-inspired gallic acid-assisted accurate-deposition strategy is created. Owing to the titanium-carboxylic coordination bonding and accurate-deposition strategy, the as-prepared membrane exhibits extraordinary stability, facing various harsh environmental challenges and incredibly corrosive situations (e.g., 4 M NaOH, 4 M HCl, and saturated NaCl solution). The robust multifunctional surface also endows commercial PVDF membrane with the ability for in situ separation and adsorption of surfactant-stabilized oil-in-water (corrosive and dyed) emulsions with high adsorption efficiencies up to 99.9%, separation efficiencies above 99.6%, and permeation flux as high as 15,698 ± 211 L/(m2·h·bar). Furthermore, the resultant membrane can be regenerated facilely and rapidly by flushing a small amount of HCl (4 M) or NaOH (4 M), making the corrosive resistance membrane attain a long-term and high-efficiency application for complex dyed wastewater treatment. Therefore, the multifunctional membrane has a broad application prospect in the industrial field.
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Affiliation(s)
- Jingcheng Wu
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan610500, China
| | - Yi He
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan610500, China
| | - Liang Zhou
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan610500, China
| | - Xiangying Yin
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan610500, China
| | - Liyun Zhang
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan610500, China
| | - Jingyu Chen
- Chengdu Evermaterials Tec Company, Chengdu, Sichuan610500, China
| | - Zhenyu Li
- Chengdu Evermaterials Tec Company, Chengdu, Sichuan610500, China
| | - Yang Bai
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan610500, China
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168
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Li Y, Wang Y, Wang Q, Liu Z, Tang L, Liang L, Zhang C, Li Q, Xu N, Sun J, Shi W. Achieving the Super Gas-Wetting Alteration by Functionalized Nano-Silica for Improving Fluid Flowing Capacity in Gas Condensate Reservoirs. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10996-11006. [PMID: 33634694 DOI: 10.1021/acsami.0c22831] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
It is well-known that the production of gas-condensate reservoirs is significantly affected by the liquid condensation near the wellbore region. Gas-wetting alteration can be one of the most effective approaches to alleviate condensate accumulation and improve liquid distribution. However, gas well deliverability is still limited because the wettability of cores is altered only from liquid-wetting to intermediate gas-wetting by using traditional chemical stimulation. To solve this bottleneck problem, herein, we developed a fluorine-functionalized nanosilica to achieve super gas-wetting alteration, increasing the contact angles of water and n-hexadecane on the treated core surface from 23 and 0° to 157 and 145°, respectively. The surface free energy reduces rapidly from 67.97 to 0.23 mN/m. The super gas-wetting adsorption layer on the core surface formed by functionalized nanosilica not only increases the surface roughness but also reduces the surface free energy. The core flooding confirms that the required pressure for displacement is apparently reduced. Meanwhile, the core permeability can be dramatically restored after the super gas-wetting alteration. The microscopic visualization is employed to further understand the impact of fluorine-functionalized nanosilica on the fluid flow behavior and mechanism in porous media. The oil saturation in the micromodel decreases sharply from 48.75 to 7.84%, eliminating the "water locking effect" and "Jiamin effect", which indicates that the added functional nanosilica effectively improves fluid flow capacity and may contribute to production in the gas condensate reservoirs. In addition, this work reveals the fluid flow behavior and mechanism in the reservoir in detail, which will expand the better application of this material to many oilfields and other mining engineering systems.
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Affiliation(s)
- Yongfei Li
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yanling Wang
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Qian Wang
- State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhonghua Liu
- School of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401332, China
| | - Longhao Tang
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Lei Liang
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Chuanbao Zhang
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Qiang Li
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Ning Xu
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jinsheng Sun
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Wenjing Shi
- College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
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169
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Dual-functional mesh with Zn-Ni-Co LDHs@NiMoO4 heterojunction nanoarrays for highly efficient oil/water separation and photocatalytic degradation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118116] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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170
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Ding F, Gao M. Pore wettability for enhanced oil recovery, contaminant adsorption and oil/water separation: A review. Adv Colloid Interface Sci 2021; 289:102377. [PMID: 33601298 DOI: 10.1016/j.cis.2021.102377] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 01/18/2023]
Abstract
Wettability, a fundamental property of porous surface, occupies a pivotal position in the fields of enhanced oil recovery, organic contaminant adsorption and oil/water separation. In this review, wettability and the related applications are systematically expounded from the perspectives of hydrophilicity, hydrophobicity and super-wettability. Four common measurement methods are generalized and categorized into contact angle method and ratio method, and influencing factors (temperature, the type and layer charge of matrix, the species and structure of modifier) as well as their corresponding altering methods (inorganic, organic and thermal modification etc.) of wettability are overviewed. Different roles of wettability alteration in enhanced oil recovery, organic contaminant adsorption as well as oil/water separation are summarized. Among these applications, firstly, the hydrophilic alteration plays a key role in recovery of the oil production process; secondly, hydrophobic circumstance of surface drives the organic pollutant adsorption more effectually; finally, super-wetting property of matrix ensures the high-efficient separation of oil from water. This review also identifies importance, challenges and future prospects of wettability alteration, and as a result, furnishes the essential guidance for selection and design inspiration of the wettability modification, and supports the further development of pore wettability application.
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171
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Wang H, Gao F, Ren R, Wang Z, Yue R, Wei J, Wang X, Kong Z, Zhang H, Zhang X. Caffeic acid polymer rapidly modified sponge with excellent anti-oil-adhesion property and efficient separation of oil-in-water emulsions. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124197. [PMID: 33091695 DOI: 10.1016/j.jhazmat.2020.124197] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/18/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
The efficient treatment of high stability emulsion with small diameter and the prevention of oil contamination of materials are serious issues in the process of emulsion separation. In order to address those issues, we reported a fast and versatile hydrophilic surface coating technology that uses oxidants and diamines to synergistically promote the polymerization of caffeic acid (CA). It was found that amino groups can not only accelerate the polymerization of CA, but also promote the deposition of polymers on the sponge surface. Using silica nanoparticles to improve the roughness, superhydrophilic melamine sponge could be prepared, which exhibited excellent superhydrophlic-underwater superolephobic and anti-oil-adhesion properties. DFT simulation was employed to explore the potential mechanism of the anti-oil adhesion ability. In addition, combined with the mechanical compression strategy, the sponge exhibited a high efficiency of 99.10% with a permeation flux of 19080 ± 700 Lm-2 h-1 in emulsion separation just under the action of gravity. Moreover, based on the interaction between the surfactant and the surface of the material, the separation mechanism was discussed. Overall, this work provided an advanced method for the preparation of superhydrophilic sponge with anti-oil-fouling performance, which showed great potential in dealing with practically challenging emulsified wastewater.
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Affiliation(s)
- Huicai Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China.
| | - Feng Gao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Ruili Ren
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Zhenwen Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Ruirui Yue
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Junfu Wei
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Xiaolei Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Zhiyun Kong
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Huan Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Xiaoqing Zhang
- Research Center of Modern Analysis Technology, Tianjin University of Science & Technology, Tianjin 300457, China.
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172
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Zhang G, Sun X, Cui P, Shen H. Self-Symmetrical 3D Hierarchical α-Calcium Sulfate Hemihydrate Twin-Flowers Composed of Microplates as a Renewable Material for Water Separation from Water-in-Oil Emulsion. Inorg Chem 2021; 60:2188-2194. [PMID: 33512992 DOI: 10.1021/acs.inorgchem.0c02815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel three-dimensional hierarchical α-calcium sulfate hemihydrate twin-flowers with a self-symmetrical structure (3D α-HH HTFs) are synthesized successfully assisted by trisodium citrate (TSC). The morphology of α-HH is closely dependent on TSC, and with increasing TSC concentration from 0 to 15 mM, the morphology gradually evolves from a long column to rod, hexagonal plate, twin-flower-like, and eventually microgranule. 3D α-HH HTFs are formed via heterogeneous nucleation coupled with Ostwald ripening. The 3D α-HH HTFs are further used as an immobilized water material to separate water from a surfactant-stabilized water-in-oil emulsion, and exhibit excellent separation performance with a separation efficiency of 99.31 wt % and immobilization efficiency of 93.03 wt %. Impressively, the separated solid after water separation can be regenerated into 3D α-HH HTFs, which retain the high separation performance of the original 3D α-HH HTFs. This work demonstrates that 3D α-HH HTFs are highly promising in purifying oil with undesired water contamination.
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Affiliation(s)
- Genlei Zhang
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, PR China.,Anhui Liuguo Chemical Co. Ltd., Tonggang Road 8, Tongling 244021, PR China
| | - Xiangbin Sun
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, PR China
| | - Peng Cui
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, PR China
| | - Hao Shen
- Anhui Liuguo Chemical Co. Ltd., Tonggang Road 8, Tongling 244021, PR China
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173
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Meng Y, Song F, Chen H, Cheng Y, Lu J, Wang H. Composited Gels from Nature Growing Scaffold: Synthesis, Properties, and Application. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5498-5507. [PMID: 33475354 DOI: 10.1021/acsami.0c18504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As a nature ultralight, well-aligned porous and anisotropy feedstock, cornstalk pith (CSP) has not been exploited for material design. Herein, we use CSP as substrate to prepare multifunctional elastic composite gels. First, CSP is pretreated by ferric chloride then immersed in an unsaturated monomer solution, following by a polymerization to form enhanced networks. The ferric ions act as junction sites for the combination between the polymer chains and the CSP matrix, therefore, dynamically reversible bonds are constructed. The bonds dissipate the compression force by breaking the dynamic bonds and reconstruct when the loading is removed. The reconstructed dynamic bonds endow an antifatigue performance of the prepared gels, in the cyclic compression test conducting 100 times with a 50% strain, and the gel holds a 94% elastic recovery. Furtherly, oil/water separation, cushioning system and biobased sensor are developed on the basis of what the matrix endows and what the reversible bonds exhibit. The preparation method in this study enriches a simply and high value-added method to utilize biobased material.
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Affiliation(s)
- Yi Meng
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
| | - Fuyu Song
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
| | - Hang Chen
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
| | - Yi Cheng
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
| | - Jie Lu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
| | - Haisong Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning China
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174
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Kim S, Woo S, Park HR, Hwang W. One-Step Versatile Fabrication of Superhydrophilic Filters for the Efficient Purification of Oily Water. ACS OMEGA 2021; 6:3345-3353. [PMID: 33553952 PMCID: PMC7860237 DOI: 10.1021/acsomega.0c05830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
As industrial oily wastewater can seriously damage ecosystems, the use of filtration technology with functional filters has emerged as an effective approach for purifying oily wastewater and protecting the environment. Although several methods for preparing functional filters with specific wettability have been reported, most methods are complicated, expensive, and time-consuming. Furthermore, these methods are only applicable to specific substrates, which hinder their practical applications. Here, a simple and versatile method for the fabrication of a superhydrophilic filter on any substrate using a one-step dipping process is reported. The method is easily scaled-up to fabricate large-area superhydrophilic filters; moreover, mass production is possible using a roll-to-roll process. The resulting filter is durable, stable, and, due to its stable hydrophilic layer, shows no deterioration in wetting behavior; it also exhibits self-cleaning properties. Based on its selective wetting characteristics, oil/water mixtures and oil-in-water emulsions stabilized by surfactants can be purified in a highly efficient manner. Importantly, owing to its self-cleaning properties, the filter can be reused after simply immersing and washing in water. This easy, cost-effective, fast, and versatile method for fabricating superhydrophilic filters can be practically applied in industries that need to purify oily water.
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175
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Zhu T, Jiang C, Wu J, Wang M, Zhu C, Zhao N, Xu J. Eco-friendly and one-step modification of poly(vinylidene fluoride) membrane with underwater superoleophobicity for effective emulsion separation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125939] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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176
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Zeng X, Lin J, Cai W, Lu Q, Fu S, Li J, Yan X, Wen X, Zhou C, Zhang M. Fabrication of superhydrophilic PVDF membranes by one-step modification with eco-friendly phytic acid and polyethyleneimine complex for oil-in-water emulsions separation. CHEMOSPHERE 2021; 264:128395. [PMID: 33007567 DOI: 10.1016/j.chemosphere.2020.128395] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Superhydrophilic membranes with simultaneous underwater superoleophobicity are highly desirable and worth exploring for separation of emulsified oil from water. In this work, combining the strong negative charges of phytic acid (PA) and the high cationic charge density of polyethyleneimine (PEI), an eco-friendly PA@PEI polyelectrolyte complex was synthetized in aqueous solution. And then the polyelectrolyte complex was deposited onto hydrophobic PVDF membranes through a one-step assembly approach with high convenience, endowing the membranes with superhydrophilic and underwater superoleophobic property. The as-prepared PA@PEI/PVDF membrane shows outstanding static and dynamic water stability, and was successfully used to separate multiple oil-in-water emulsions, with an average rejection rate exceeding 98.5% and a water flux up to 12203.6 L m-2∙h-1∙bar-1. Furthermore, the water flux can be recovered to a high level after four separation-washing cycles, showing excellent antifouling performance and recovery capability. Together with its natural raw materials and environmentally friendly preparation strategy, the PA@PEI/PVDF membrane shows great potential in practical treatment of emulsified oily wastewater.
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Affiliation(s)
- Xinjuan Zeng
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Jiadong Lin
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Weicheng Cai
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Qiaorou Lu
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Shuyi Fu
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Jingjing Li
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Xiqiang Yan
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China
| | - Xiufang Wen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China.
| | - Min Zhang
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, PR China.
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177
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Yang Y, Chen X, Li Y, Yin Z, Bao M. Construction of a Superhydrophobic Sodium Alginate Aerogel for Efficient Oil Absorption and Emulsion Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:882-893. [PMID: 33415974 DOI: 10.1021/acs.langmuir.0c03229] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bio-based aerogels serve as potential materials in separation of oil/water mixtures. Nevertheless, there remain some key challenges, including expensive/toxic organic cross-linkers, unpromising reusability, and poor performance in emulsion separation. Hereby, a novel, robust, and superhydrophobic sodium alginate/graphene oxide/silicon oxide aerogel (SA/GO/SiO2-M) was fabricated by simple calcium ion cross-linking self-assembly, freeze-drying, and chemical vapor deposition methods based on the renewable and abundant raw materials. The as-prepared SA-based aerogel possesses high absorbency for varieties of organic solvents and oils. Importantly, it shows high efficiency in the separation of surfactant-stabilized water-in-oil emulsions. SA/GO/SiO2-M aerogels display excellent reusability in both absorption and separation because of their good mechanical properties in the air and oil phase, and the mechanism in emulsion separation is discussed. This study shows that SA/GO/SiO2-M aerogels are a promising material in treating oil contaminants from different fields.
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Affiliation(s)
- Yushuang Yang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China
| | - Xiuping Chen
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China
| | - Yiming Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China
| | - Zichao Yin
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China
| | - Mutai Bao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China
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178
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Zheng W, Huang J, Li S, Ge M, Teng L, Chen Z, Lai Y. Advanced Materials with Special Wettability toward Intelligent Oily Wastewater Remediation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:67-87. [PMID: 33382588 DOI: 10.1021/acsami.0c18794] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Clean water resources are essential to our human society. Oil leakage has caused water contamination, which leads to serious shortage of clean water, environmental deterioration, and even increasing number of deaths. It is of great urgency to solve the oil-polluted water problems worldwide. Efficient oil/water separation, especially emulsified oil/water mixture separation, is widely used to mitigate water pollution issues. Recently, advanced materials with special wettability have been employed for oily wastewater remediation. Moreover, by endowing them with various intelligent functions, smart materials can effectively separate complex oil/water mixtures including extremely stable emulsions. In this review, oil/water separation mechanisms and various fabrication methods of special wettability separation materials are summarized. We highlight the special wettable materials with intelligent functions, including photocatalytic, self-healing, and switchable oil/water separation materials, which can achieve self-cleaning, self-healing, and efficient oily wastewater treatment. In each section, the acting mechanisms, fabricating technologies, representative studies, and separation efficiency are briefly introduced. Lastly, the challenges and outlook for oil/water separation based on the special wettability materials are discussed.
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Affiliation(s)
- Weiwei Zheng
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Jianying Huang
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Shuhui Li
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China
| | - Mingzheng Ge
- School of Textile & Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, Nantong University, Nantong 226019, P. R. China
| | - Lin Teng
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore
| | - Yuekun Lai
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China
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179
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A superwettable functionalized-fabric with pH-sensitivity for controlled oil/water, organic solvents separation, and selective oil collection from water-rich system. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117665] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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180
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Lu Y, Cao Y, Jia Y, Dai C, Wang P. Ultralight, Strong and Renewable Hybrid Carbon Nanotubes Film for Oil-Water Emulsions Separation. MEMBRANES 2020; 11:membranes11010001. [PMID: 33374900 PMCID: PMC7821942 DOI: 10.3390/membranes11010001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/08/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022]
Abstract
A novel ultralight superhydrophobic-superoleophilic hybrid Carbon Nanotubes (CNTs) film with double-layer structures is fabricated by using vacuum filtration method. The CNTs film can separate various surfactant-stabilized water-in-oil emulsions with a separation efficiency higher than 99.3%. Moreover, the hybrid films can be regenerated through a simple and rapid combustion process within 2 s. In addition, the CNTs film still retains good hydrophobic properties under the conditions of physical abrasion, and strong acidic and alkaline solutions, which shows the excellent durability. The hybrid CNTs film is ultralight, stable, and easily stored and reused. The outstanding features of the obtained CNTs films we present here may find many important applications in various fields like oil purification and wastewater treatment.
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Affiliation(s)
- Yamei Lu
- Department of Chemistry, School of Science Beijing Jiaotong University, Beijing 100044, China;
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China; (Y.C.); (Y.J.)
| | - Yingze Cao
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China; (Y.C.); (Y.J.)
| | - Yi Jia
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China; (Y.C.); (Y.J.)
| | - Chunai Dai
- Department of Chemistry, School of Science Beijing Jiaotong University, Beijing 100044, China;
- Correspondence: (C.D.); (P.W.)
| | - Pengfei Wang
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China; (Y.C.); (Y.J.)
- Correspondence: (C.D.); (P.W.)
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181
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Chen C, Chen L, Weng D, Li X, Li Z, Wang J. Simulation Study on the Dynamic Behaviors of Water-in-Oil Emulsified Droplets on Coalescing Fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14872-14880. [PMID: 33231080 DOI: 10.1021/acs.langmuir.0c02948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Although increasing superwetting membranes have been developed for separating oil-water emulsions based on the "size-sieving" mechanism, their pores are easily blocked and fouled by the intercepted emulsified droplets, which would result in a severe membrane fouling issue and a sharp decline in flux. Instead of droplet interception, a fiber-based coalescer separates oil/water emulsions by inducing the emulsified droplets to coalesce and transform into layered oil/water mixtures, exhibiting an ability to work continuously for a long time with high throughput, which makes it a promising technology for emulsion treatment. However, the underlying mechanism of the separation process is not well understood, which makes it difficult to further improve the separation performance. Hence, in this work, the dynamic behaviors of water-in-oil emulsified droplets on the surface of the coalescing fiber were numerically investigated based on the phase-field model. The attachment, transport, and detachment behaviors of droplets on fibers were directly observed, and the effects of fiber wettability, orientation, arrangement, and fluid speed were studied in detail. First, it was observed that the droplets will move downstream along the fiber surface under the effect of fluid shear, and the large droplets tend to coalesce with their downstream small droplets on the same fiber surface because they move faster compared to the small droplets. Second, it was found that the emulsified droplet will spontaneously transport to the intersection of two angled fibers under the drive of asymmetric Laplace pressure, which demonstrated that the emulsified droplets tend to gather at the intersection of fibers when permeating through a coalescing medium. Third, it was found that the detachment behaviors of droplets from the fiber surface are strongly affected by their size, fiber wettability, and fluid velocity. In addition, the results of our simulation show that the backside of two closely attached fibers can further inhibit the detachment of droplets. We truly believe that our research results are of significance to optimize the parameters of a fiber-based coalescer for separating oil-water emulsions and to develop novel oil/water separators.
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Affiliation(s)
- Chaolang Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
| | - Lei Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
| | - Ding Weng
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
| | - Xuan Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
| | - Zhaoxin Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
| | - Jiadao Wang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China
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182
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Bai W, Lin H, Chen K, Xu J, Chen J, Zhang X, Zeng R, Lin J, Xu Y. Eco-friendly stable cardanol-based benzoxazine modified superhydrophobic cotton fabrics for oil–water separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117545] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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183
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Superhydrophilic and underwater superoleophobic Ti foam with robust nanoarray structures of TiO2 for effective oil-in-water emulsion separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117437] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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184
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In situ metal-polyphenol interfacial assembly tailored superwetting PES/SPES/MPN membranes for oil-in-water emulsion separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118566] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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185
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He L, Long M, Miao X, Zhou Q, Dong M, Liu X, Deng W. A simple and environmental strategy to separate and purify dye-contaminated emulsion using waste porous honeycomb cinder. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1847660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Linyi He
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Mengying Long
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Xinrui Miao
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Qiannan Zhou
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Meiqiu Dong
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Xiaogang Liu
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Wenli Deng
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, P. R. China
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186
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Wang Y, Zhou G, Yan Y, Shao B, Hou J. Construction of Natural Loofah/Poly(vinylidene fluoride) Core-Shell Electrospun Nanofibers via a Controllable Janus Nozzle for Switchable Oil-Water Separation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51917-51926. [PMID: 33147949 DOI: 10.1021/acsami.0c12912] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing microstructure and multifunctional membranes toward switchable oil-water separation has been highly desired in oily wastewater treatment. Herein, a controllable Janus nozzle was employed to innovatively electrospin natural loofah/poly(vinylidene fluoride) (PVDF) nanofibers with a core-shell structure for gravity-driven water purification. By adjusting flow rates of the PVDF component, a core-shell structure of the composite fibers was obtained caused by the lower viscosity and surface tension of PVDF. In addition, a steady laminar motion of fluids was constructed based on the Reynolds number of flow fields being less than 2300. In order to investigate the formation mechanism of the microstructure, a series of Janus nozzles with different lengths were controlled to study the blending of the two immiscible components. The gravity difference between the two components might cause disturbance of the jet motion, and the PVDF component unidirectionally encapsulated the loofah to form the shell layer. Most importantly, the dry loofah/PVDF membranes could separate oil from an oil-water mixture, while the water-wetted membrane exhibited switchable separation that could separate water from the mixtures because of the hydroxyl groups of the hydrophilic loofah hydrogen-bonding with water molecules and forming a hydration layer. The composite fibers can be applied in water remediation in practice, and the method to produce core-shell structures seems attractive for technological applications involving macroscopic core-shell nano- or microfibers.
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Affiliation(s)
- Yihuan Wang
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
| | - Guibin Zhou
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
| | - Yifan Yan
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
| | - Bohui Shao
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
| | - Jiazi Hou
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China
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187
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Chen L, Du J, Zhou W, Shen H, Tan L, Zhou C, Dong L. Microwave-Assisted Solvothermal Synthesis of Covalent Organic Frameworks (COFs) with Stable Superhydrophobicity for Oil/Water Separation. Chem Asian J 2020; 15:3421-3427. [PMID: 32869504 DOI: 10.1002/asia.202000872] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/23/2020] [Indexed: 11/12/2022]
Abstract
COFs were synthesized by a microwave-assisted solvothermal route, with the building blocks containing 1,3,5-tris(4-aminophenyl) benzene and 2,3,5,6-tetra-fluoroterephthalaldehyde (or 1,4-phthalaldehyde). The -F groups introduced into the benzene ring promoted hydrophobicity and stability of the COFs. The universality and long effectiveness of oil adsorption can be realized when applying COFs as adsorbent. The powder also exhibited excellent water-in-oil emulsions separation performance, with the separation efficiency no lower than 99.5%. In this work, the use of microwave solvothermal synthesis of superhydrophobic COFs is potential to replace the conventional synthesis process and more suitable for industrial scale-up production. Furthermore, the findings provide a new strategy for solving the problem of oil spill treatment and industrial water-in-oil emulsions separation by using the emerging 2D COFs.
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Affiliation(s)
- Li Chen
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Jingcheng Du
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Wei Zhou
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Huizhen Shen
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Luxi Tan
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Cailong Zhou
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Lichun Dong
- Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, P. R. China
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188
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Wang M, Xu Z, Hou Y, Li P, Sun H, Niu QJ. Fabrication of a superhydrophilic PVDF membrane with excellent chemical and mechanical stability for highly efficient emulsion separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117408] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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189
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Zhang J, Raza S, Wang P, Wen H, Zhu Z, Huang W, Mohamed IM, Liu C. Polymer brush-grafted ZnO-modified cotton for efficient oil/water separation with abrasion/acid/alkali resistance and temperature “switch” property. J Colloid Interface Sci 2020; 580:822-833. [DOI: 10.1016/j.jcis.2020.07.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/15/2022]
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190
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Multifunctional membranes with super-wetting characteristics for oil-water separation and removal of hazardous environmental pollutants from water: A review. Adv Colloid Interface Sci 2020; 285:102276. [PMID: 33039840 DOI: 10.1016/j.cis.2020.102276] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/19/2020] [Accepted: 09/20/2020] [Indexed: 01/03/2023]
Abstract
Over the past few years, oil-water separation techniques have been widely researched due to influences of oil pollution. The oil pollution is significantly increasing day-by-day because of ever-increasing usage of oil in daily routine of humans and industrial activities. The separation of water from oil-water emulsions/mixtures through membrane technology has provided absolute necessary qualities such as low cost, eco-friendly, easy-operation and energy efficient. To build up the filter membranes with special super-wettability properties and bearing excellent multifunctional applications is highly attractive research area in current decade. However, evolution of membrane technology suffered many deficiencies including severe fouling, short-standing against high flow speed, surface wettability disorders, non-reusable and limited application. In this review article, we outline the recent advances in membrane technology with respect to special super-wettability properties, enhanced characteristics for purpose to serve oil-water separation, and more specifically its multifunctional applications. Therefore, this study is made for membranes having other than applications, in addition to oil-water separation. Further, the wetting phenomenon of these multifunctional membranes is addressed and highlighted the brief overview of surface wetting types including Superhydrophobic-Superoleophilic membranes, Superhydrophilic-Superoleophobic membranes, and Superhydrophilic-underwater Superoleophobic membranes. Moreover, relative fabrication procedures and multifunctional applications of developed multifunctional super-wetting membranes are also discussed along with wetting behavior. Finally, the current developments and achievements for oil-water separation multifunctional super-wetting membranes are concluded. Besides, it also explores the future challenges and obstacles associated to these membranes. Hence, this article provides brief overview of advancement of oil-water separation based multifunctional super-wetting membranes and ended with new thoughts of further modification/enhancement.
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191
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Li J, Yang L, Liu H, Li G, Li R, Cao Y, Zeng H. Simple Preparation Method for Hydrophilic/Oleophobic Coatings. ACS APPLIED MATERIALS & INTERFACES 2020; 12:45266-45273. [PMID: 32916043 DOI: 10.1021/acsami.0c11596] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This work provides a simple method to prepare a hydrophilic/oleophobic coating using polyester filter cloth as the substrate, a mixture of three hydrophilic polymers (poly(aspartic acid), poly(acrylic acid), and poly(vinyl alcohol)); SiO2 with an average particle size of 30 nm is used to improve the surface roughness of the filter cloth. Then, a long fluorocarbon chain of 1H,1H,2H,2H-perfluorooctyltriethoxysilane is grafted onto the surface by a vacuum silanization coupling reaction to obtain hydrophilic/oleophobic properties. The water and hexadecane contact angles of the treated filter cloth are 3 and 99.8°, respectively. A separation efficiency of 98% was achieved in hexadecane/water separation. The durability test shows that the separation efficiency of toward hexadecane-water mixture remains more than 98% after 20 cycles. The obtained material also presents a strong underwater antipollution property when using hexane, rapeseed oil, mineral oil, and pump oil as model pollutants. For oils with higher viscosity, the separation efficiency remains above 97%. However, the separation efficiency is ∼80% when treating emulsions.
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Affiliation(s)
- Jinhui Li
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Le Yang
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Haifeng Liu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510000, China
| | - Guobin Li
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Rui Li
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Ying Cao
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Hui Zeng
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
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192
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Wang M, Xu Z, Guo Y, Hou Y, Li P, Niu QJ. Engineering a superwettable polyolefin membrane for highly efficient oil/water separation with excellent self-cleaning and photo-catalysis degradation property. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118409] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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193
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Zhu W, Huang W, Zhou W, Qiu Z, Wang Z, Li H, Wang Y, Li J, Xie Y. Sustainable and antibacterial sandwich-like Ag-Pulp/CNF composite paper for oil/water separation. Carbohydr Polym 2020; 245:116587. [DOI: 10.1016/j.carbpol.2020.116587] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/24/2020] [Accepted: 06/04/2020] [Indexed: 01/14/2023]
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194
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Yue X, Fu D, Zhang T, Yang D, Qiu F. Superhydrophobic Stainless-Steel Mesh with Excellent Electrothermal Properties for Efficient Separation of Highly Viscous Water-in-Crude Oil Emulsions. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03549] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xuejie Yue
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Normal University, Wuhu 241000, China
| | - Dongbo Fu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
- Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Normal University, Wuhu 241000, China
| | - Dongya Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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195
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Kang Y, Jiao S, Wang B, Lv X, Wang W, Yin W, Zhang Z, Zhang Q, Tan Y, Pang G. PVDF-Modified TiO 2 Nanowires Membrane with Underliquid Dual Superlyophobic Property for Switchable Separation of Oil-Water Emulsions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40925-40936. [PMID: 32805857 DOI: 10.1021/acsami.0c11266] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Separation membranes with underliquid dual superlyophobicity have recently caused widespread concern due to their switchable separation of oil-water mixtures and emulsions. However, the fabrication of the reported underliquid dual superlyophobic membranes is difficult, and the design of the underliquid dual superlyophobic surface of these membranes is challenging because of their complex surface composition. Theoretically, underliquid dual superlyophobicity is an underliquid Cassie state attainable by the synergy of the underliquid dual lyophobic surface and the construction of a high-roughness surface. Herein, we fabricated an underliquid dual superlyophobic membrane by combining underliquid dual lyophobic polyvinylidene fluoride (PVDF) and TiO2 nanowires. PVDF-modified TiO2 nanowire membranes with underliquid dual superlyophobicity were prepared via a simple adsorption and filtration approach. PVDF was coated onto TiO2 nanowires to form a PVDF layer with a thickness of 6 nm. The PVDF modification provided flexibility to the fragile TiO2 nanowires membrane and changed its wettability from underwater superoleophobicity/underoil superhydrophilicity to underliquid dual superlyophobicity. The PVDF-modified TiO2 nanowires membrane efficiently separated both oil-in-water and water-in-oil emulsions. The binary cooperative effect between the TiO2 nanowires and the coated PVDF layer was responsible for the underliquid dual superlyophobicity.
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Affiliation(s)
- Yutang Kang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Shihui Jiao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Boran Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xinyan Lv
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wenwen Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wen Yin
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhenwei Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qi Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yumei Tan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Guangsheng Pang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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196
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Chen B, Yang X, Zeng X, Yang M, Xiao J, Fan L, Huang Z, Zhao F, Zhan G. Rational design of integrated nanocatalysts with hollow mesoporous transition metal silicates for chemoselective hydrogenation of cinnamaldehyde. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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197
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Wang Z, Yu P, Zhou J, Liao J, Zhou L, Ran H, Zhai J, Xing J, Tan G, Zhou Z, Li Y, Ning C, Zhou Y. Ultrafast and On-Demand Oil/Water Separation Membrane System Based on Conducting Polymer Nanotip Arrays. NANO LETTERS 2020; 20:4895-4900. [PMID: 32567866 DOI: 10.1021/acs.nanolett.0c00911] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ultrafast oil/water separation based on tunable superwettability switch remains a big challenge. Here, inspired by the ultrafast water transport mechanism in sarracenia, we develop a micro/nanostructured porous membrane with conducting polymer nanotip arrays through the surface-initiated polymerizations. By modulating the height (ranging from 49-529 nm) and redox states of nanotips, a smart reversible superwettability switch is facile to obtain with contact angles of water/oil arranging from 161° to about 0°. Besides, liquid transport speed was accelerated more than 1.5 times by increasing the nanotip length. The water flux could reach up to 50326 L m-2 h-1 (1000 times that of a typical industrial ultrafiltration membrane). This is attributed to the stable and continuous water film along the nanotips, which provide a lubrication layer, leading to an increase of permeability. This work provides significant insights into macro/nanostructured membrane design for smart separation, blood lipid filtration, and smart nanoreactors with high permeability.
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Affiliation(s)
- Zhengao Wang
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Peng Yu
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Jiajia Zhou
- Center of Soft Matter Physics and Its Application, Beihang University, Beijing 100191, P. R. China
| | - Jingwen Liao
- Guangzhou Institute of Advanced Technology, Chinese Academy of Sciences, Guangzhou 511458, P. R. China
| | - Lei Zhou
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Heying Ran
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Jingxia Zhai
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Jun Xing
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Guoxin Tan
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Zhengnan Zhou
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Yangfan Li
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Chengyun Ning
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Yahong Zhou
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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198
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Chen C, Chen S, Chen L, Yu Y, Weng D, Mahmood A, Wang J, Parkin IP, Carmalt CJ. Underoil Superhydrophilic Metal Felt Fabricated by Modifying Ultrathin Fumed Silica Coatings for the Separation of Water-in-Oil Emulsions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27663-27671. [PMID: 32431148 DOI: 10.1021/acsami.0c03801] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Although various superhydrophobic/superoleophilic porous materials have been developed and successfully applied to separate water-in-oil emulsions through the size-sieving mechanism, the separation performance is restricted by their nanoscale pore size severely. In this study, the wettability of underoil water on fumed silica was experimentally observed, and the underlying mechanism was investigated by carrying out theoretical analysis and molecular dynamic (MD) simulations. Further, we present a novel, facile, and an inexpensive technique to fabricate an underoil superhydrophilic metal felt with microscale pores for the separation of water-in-oil emulsions using SiO2 nanoparticles (NPs) as building blocks. The as-prepared underoil superhydrophilic coating is closed-packed and ultrathin (the thickness is approximately hundreds of nanometers), as well as capable of being coated on a metal felt with complex structures without blocking its pores. The as-prepared metal felt could adsorb water droplets directly from oil, which endowed it with the ability to separate both surfactant-free and surfactant-stabilized water-in-oil emulsions with high separation efficiency up to 99.7% even though its pore size is larger than that of the emulsified droplet. The filtration flux for the separation of span 80-stabilized emulsion is up to ∼4000 L·m-2·h-1. Its separation performance is better than most of the other traditional membranes and superwettable materials used for the separation of water-in-oil emulsions. Moreover, the as-prepared metal felt retained outstanding separation performance even after 30 cycles of use, which demonstrated its excellent reusability and durability. Additionally, the distinctive wettability of underoil superhydrophilicity endued coated metal felt with superior antifouling properties toward crude oil. Overall, this study not only provides a new perspective on separating water-in-oil emulsions but also gives a universal approach to develop unique wettability surfaces.
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Affiliation(s)
- Chaolang Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
- Department of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Shuai Chen
- Institute of High Performance Computing, A*STAR, 138632 Singapore
| | - Lei Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Yadong Yu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Ding Weng
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Awais Mahmood
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Jiadao Wang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Ivan P Parkin
- Department of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Claire J Carmalt
- Department of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K
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199
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Wang M, Zhang Z, Wang Y, Zhao X, Men X, Yang M. Ultrafast Fabrication of Metal-Organic Framework-Functionalized Superwetting Membrane for Multichannel Oil/Water Separation and Floating Oil Collection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25512-25520. [PMID: 32408734 DOI: 10.1021/acsami.0c08731] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Traditional methods for oil/water separation suffer from many tricky problems such as low efficiency, high energy consumption, and difficulties in recycling and reusing. To address these hurdles, we developed a metal-organic framework-coated superwetting membrane for multichannel oil/water separation and collection of floating oils. The dip-coating method adopted in this paper is extremely flexible in manipulation and can be completed within 1 h under a low temperature without any assistance of high pressure. Interestingly, the strategy of fabricating superwetting membrane mainly includes introducing vital interlayers of Cu(OH)2 nanowires, which not only construct the favorable hierarchical structures but also act as partly sacrificed templates for further growth of hydrophilic MOF nanowhiskers. In virtue of the high flexibility of the as-prepared mesh, this superwetting membrane can be applied for multichannel oil/water separation including gravity-driven oil/water separation, continuous oil/water separation, and floating oil collection. Moreover, the separation efficiency and flux of the superwetting membrane keep high and stable under multiple separation cycles. This study paves the way for a fast and facile preparation of a superwetting membrane with high applicability for multiple oil/water separation.
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Affiliation(s)
- Mengke Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Road 18th, Lanzhou 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhaozhu Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Road 18th, Lanzhou 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanling Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Xin Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Road 18th, Lanzhou 730000, China
| | - Xuehu Men
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Mingming Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Road 18th, Lanzhou 730000, China
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200
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Yue RY, Guan J, Zhang CM, Yuan PC, Liu LN, Zaheer Afzal M, Wang SG, Sun XF. Photoinduced superwetting membranes for separation of oil-in-water emulsions. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116536] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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