1
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Chen C, Zhu L, Jiang R, Li X. Preparation of a Janus copper mesh via nanoparticle interface self-assembly for unidirectional water transportation. Chem Commun (Camb) 2023; 59:13506-13509. [PMID: 37882452 DOI: 10.1039/d3cc04578a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
A simple colloidal particle interface assembly method is presented to fabricate Janus meshes. The transport mechanism of water on the Janus mesh was fully revealed by experimental observation and numerical simulation. Furthermore, a liquid-assisted ultrafast transport of water droplets on the Janus mesh was presented (transport speed was increased by more than 20 times).
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Affiliation(s)
- Chaolang Chen
- School of Mechanical Engineering, Sichuan University, 610065, Chengdu, China.
| | - Linfeng Zhu
- School of Mechanical Engineering, Sichuan University, 610065, Chengdu, China.
| | - Ruisong Jiang
- School of Mechanical Engineering, Sichuan University, 610065, Chengdu, China.
| | - Xuan Li
- Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China.
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2
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Despot L, Hinduja C, Lehn R, Mikolei J, Richter T, Köbschall K, Stanzel M, Berger R, Hussong J, Ceolín M, Andrieu-Brunsen A. Molecular transport and water condensation inside mesopores with wettability step gradients. NANOSCALE ADVANCES 2023; 5:6123-6134. [PMID: 37941961 PMCID: PMC10628989 DOI: 10.1039/d3na00594a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/02/2023] [Indexed: 11/10/2023]
Abstract
The wettabilities of nanoscale porous surfaces play important roles in the context of molecular and fluid transport or oil-water separation. The wettability pattern along a nanopore strongly influences fluid distribution throughout the membrane. Mesoporous silica thin films with gradually adjusted wettabilities were fabricated via cocondensation. With consecutive mesoporous layer depositions, double-layer mesoporous silica films with asymmetric or so-called Janus wettability patterns were generated. The effects of these wetting gradients on mass transport, water imbibition, and water vapor condensation were investigated with ellipsometry, cyclic voltammetry (CV), drop friction force instrument (DoFFIs), fluorescence microscopy and interferometry. By increasing the film thickness of the hydrophobic mesoporous silica top layer deposited on a hydrophilic mesoporous silica layer up to 205 nm, molecular transport through both the layers was prevented. However, water was observed to condense onto the bottom layer, and transport occurred for thinner top layers.
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Affiliation(s)
- Laura Despot
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt 64289 Darmstadt Germany
| | - Chirag Hinduja
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Robert Lehn
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt 64289 Darmstadt Germany
| | - Joanna Mikolei
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt 64289 Darmstadt Germany
| | - Timo Richter
- Institut für Strömungslehre und Aerodynamik, Technische Universität Darmstadt Peter-Grünberg-Straße 10 64289 Darmstadt Germany
| | - Kilian Köbschall
- Institut für Strömungslehre und Aerodynamik, Technische Universität Darmstadt Peter-Grünberg-Straße 10 64289 Darmstadt Germany
| | - Mathias Stanzel
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt 64289 Darmstadt Germany
| | - Rüdiger Berger
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Jeanette Hussong
- Institut für Strömungslehre und Aerodynamik, Technische Universität Darmstadt Peter-Grünberg-Straße 10 64289 Darmstadt Germany
| | - Marcelo Ceolín
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Universidad Nacional de La Plata and CONICET Diag. 113 y 64 (1900) La Plata Argentina
| | - Annette Andrieu-Brunsen
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt 64289 Darmstadt Germany
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3
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Kim HJ, Jung YJ, Son SH, Choi WS. Compressible Separator and Catalyst for Simultaneous Separation and Purification of Emulsions and Aqueous Pollutants. ACS OMEGA 2023; 8:40741-40753. [PMID: 37929114 PMCID: PMC10620873 DOI: 10.1021/acsomega.3c05776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023]
Abstract
Oily wastewater, a global environmental concern, demands efficient oil/water separation and pollutant removal. Our compressible separator and catalyst (CSC) balls, prepared through sponge etching and metal nanoparticle synthesis, exhibited efficient degradation of dyes of varying sizes, spanning a molecular weight range from 139 to 696 g/mol during the oil/water separation. Control over the distance between catalysts was achieved by incorporating Ag-Pt-Pd catalysts into the sponge skeleton and by adjusting the compression rates. The dispersion of the catalysts improved degradation efficiency for larger dyes, while concentrating the catalysts proved to be more effective for the smaller ones. By optimizing the compression rates of CSC balls, we successfully achieved the effective removal of emulsions of different sizes and precise control of flux. Our CSC ball-loaded system offers efficient and versatile solutions for concurrent separation and purification of emulsions and pollutants with potential environmental benefits.
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Affiliation(s)
- Hee Ju Kim
- Department of Chemical and Biological
Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Young Ju Jung
- Department of Chemical and Biological
Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Su Hyeon Son
- Department of Chemical and Biological
Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Won San Choi
- Department of Chemical and Biological
Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
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4
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Li B, Qi B, Guo Z, Wang D, Jiao T. Recent developments in the application of membrane separation technology and its challenges in oil-water separation: A review. CHEMOSPHERE 2023; 327:138528. [PMID: 36990363 DOI: 10.1016/j.chemosphere.2023.138528] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/15/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
In the development and production process of domestic and foreign oil fields, large amounts of oil-bearing wastewater with complex compositions containing toxic and harmful pollutants are generated. These oil-bearing wastewaters will cause serious environmental pollution if they are not effectively treated before discharge. Among these wastewaters, the oily sewage produced in the process of oilfield exploitation has the largest content of oil-water emulsion. In order to solve the problem of oil-water separation of oily sewage, the paper summarizes the research of many scholars in many aspects, such as the use of physical and chemical methods such as air flotation and flocculation, or the use of mechanical methods such as centrifuges and oil booms for sewage treatment. Comprehensive analysis shows that among these oil-water separation methods, membrane separation technology has higher separation efficiency in the separation of general oil-water emulsions than other methods and also exhibits a better separation effect for stable emulsions, which has a broader application prospect for future developments. To present the characteristics of different types of membranes more intuitively, this paper describes the applicable conditions and characteristics of various types of membranes in detail, summarizes the shortcomings of existing membrane separation technologies, and offers prospects for future research directions.
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Affiliation(s)
- Bingfan Li
- School of Vehicles and Energy, Yanshan University, Qinhuangdao, 066004, China
| | - Bo Qi
- School of Vehicles and Energy, Yanshan University, Qinhuangdao, 066004, China
| | - Ziyuan Guo
- School of Vehicles and Energy, Yanshan University, Qinhuangdao, 066004, China
| | - Dongxu Wang
- China Suntien Green Energy Co., Ltd., Shijiazhuang, 050000, China
| | - Tifeng Jiao
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China.
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5
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Jiang X, Liu B, Zeng Q, Yang F, Guo Z. Mussel-Inspired Robust Peony-like Cu 3(PO 4) 2 Composite Switchable Superhydrophobic Surfaces for Bidirectional Efficient Oil/Water Separation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13700-13710. [PMID: 36862602 DOI: 10.1021/acsami.2c21151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
To alleviate the economic and environmental damage caused by industrial discharges of oily wastewater, materials applied for efficient oil/water separation are receiving significant attention from researchers and engineers. Among others, switchable wettable materials for bidirectional oil/water separation show great potential for practical applications. Inspired by mussels, we utilized a simple immersion method to construct a polydopamine (PDA) coating on a peony-like copper phosphate surface. Then, TiO2 was deposited on the PDA coating surface to build a micro-nano hierarchical structure, which was modified with octadecanethiol (ODT) to obtain a switchable wettable peony-like superhydrophobic surface. The water contact angle of the obtained superhydrophobic surface reached 153.5°, and the separation efficiency was as high as 99.84% with a flux greater than 15,100 L/(m2·h) after 10 separation cycles for a variety of heavy oil/water mixtures. Notably, the modified membranes have a unique photoresponsiveness, transforming to superhydrophilic upon ultraviolet irradiation, achieving separation efficiencies of up to 99.83% and separation fluxes greater than 32,200 L/(m2·h) after 10 separation cycles for a variety of light oil/water mixtures. More importantly, this switch behavior is reversible, and the high hydrophobicity can be restored after heating to achieve efficient separation of heavy oil/water mixtures. In addition, the prepared membranes can maintain high hydrophobicity under acid-base conditions and after 30 sandpaper abrasion cycles, and damaged membranes can be restored to superhydrophobicity after a brief modification in the ODT solution. This simple-to-prepare, easy-to-repair, robust membrane with switchable wettability shows great potential in the field of oil/water separation.
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Affiliation(s)
- Xian Jiang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Bing Liu
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Qinghong Zeng
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Fuchao Yang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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6
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Yang Y, Guo Z, Liu W. Special Superwetting Materials from Bioinspired to Intelligent Surface for On-Demand Oil/Water Separation: A Comprehensive Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204624. [PMID: 36192169 DOI: 10.1002/smll.202204624] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/24/2022] [Indexed: 05/27/2023]
Abstract
Since superwetting surfaces have emerged, on-demand oil/water separation materials serve as a new direction for meeting practical needs. This new separation mode uses a single porous material to allow oil-removing and water-removing to be achieved alternately. In this review, the fundamentals of wettability are systematically summarized in oil/water separation. Most importantly, the two states, bioinspired surface and intelligent surface, are summarized for on-demand oil/water separation. Specifically, bioinspired surfaces include micro/nanostructures, bioinspired chemistry, Janus-featured surfaces, and dual-superlyophobic surfaces that these superwetting materials can possess asymmetric wettability in one structure system or opposite underliquid wettability by prewetting. Furthermore, an intelligent surface can be adopted by various triggers such as pH, thermal and photo stimuli, etc., to control wettability for switchable oil/water separation reversibly, expressing a thought beyond nature to realize innovative oil/water separation by external stimuli. Remarkably, this review also discusses the advantages of all the materials mentioned above, expanding the separation scope from the on-demand oil/water mixtures to the multiphase immiscible liquid-liquid mixtures. Finally, the prospects of on-demand oil/water separation materials are also concluded.
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Affiliation(s)
- Yong Yang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, P. R. China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, P. R. China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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7
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Xu Y, Zeng X, Qiu L, Yang F. 2D nanoneedle-like ZnO/SiO2 Janus membrane with asymmetric wettability for highly efficient separation of various oil/water mixtures. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129352] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Bao X, Wang F, Liu Q, Yu F, Yang Y. Controlled aggregation of phytic acid metal complex on polysulfone ultrafiltration membrane toward simultaneous rejection of highly emulsified oils and dyes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128568] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Liu Z, Zuo J, Zhao T, Chen Z, Zeng X, Chen M, Xu S, Cheng J, Wen X, Pi P. A 3D Janus stainless steel mesh bed with high efficiency and flux for on-demand oil-in-water and water-in-oil emulsion separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Zeng X, Cai W, Fu S, Lin X, Lu Q, Liao S, Hu H, Zhang M, Zhou C, Wen X, Tan S. A novel Janus sponge fabricated by a green strategy for simultaneous separation of oil/water emulsions and dye contaminants. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127543. [PMID: 34879529 DOI: 10.1016/j.jhazmat.2021.127543] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 09/29/2021] [Accepted: 05/06/2021] [Indexed: 06/13/2023]
Abstract
A novel Janus sponge with the ability to remove complex contaminants from water is reported. Firstly, a superhydrophilic sponge (PA@PEI-sponge) is prepared via synthesizing negatively charged phytic acid@polyethyleneimine (PA@PEI) nanoparticles and assembling them on the surface of polydopamine (PDA) and PEI-modified polyurethane (PU) sponge through electrostatic adsorption. The Janus sponge is generated by modifying one side of the PA@PEI-sponge with PDMS, which exhibits superior separation efficiency and high filtration flux toward both water-in-oil and oil-in-water emulsions due to its multiplex selective wettability and the interconnected and tortuous 3D porous channels. The numerous negatively charged active sites of PA@PEI nanoparticles and PDA layer impart the superhydrophilic PA@PEI-sponge with the removal efficiency of 39.95 ± 0.27% for malachite green (MG) via simple flow-through filtration, which can be improved to 99.92 ± 0.07% by Janus modification. More importantly, the Janus sponge exhibits an excellent treatment capacity for complex mixtures containing emulsified oil and dye, with the separation efficiency above 99.59%. The Janus sponge also demonstrates the effective separation of real industrial wastewater collected from an acrylic dyeing plant. Together with a facile and green preparation strategy, this Janus sponge shows excellent application potential for simultaneous dye removal and oil/water emulsion separation.
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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
| | - Weicheng Cai
- 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
| | - Xiaomei Lin
- 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
| | - Shuang Liao
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, PR China
| | - Huawen Hu
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, PR China
| | - Min Zhang
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, PR China.
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Xiufang Wen
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Shaozao Tan
- Guangdong Engineering & Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China
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11
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Peng Z, Huang J, Guo Z. Anisotropic Janus materials: from micro-/nanostructures to applications. NANOSCALE 2021; 13:18839-18864. [PMID: 34757351 DOI: 10.1039/d1nr05499f] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Janus materials have led to great achievements in recent years owing to their unique asymmetric structures and properties. In this review, recent advances of Janus materials including Janus particles and Janus membranes are summarized, and then the microstructures and applications of Janus materials are emphasized. The asymmetric wettability of Janus materials is related to their microstructures; hence, the microstructures of Janus materials were analyzed, compared and summarized. Also presented are current and potential applications in sensing, drug delivery, oil-water separation and so on. Finally, a perspective on the research prospects and development of Janus materials in more fields is given.
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Affiliation(s)
- Zhouliang Peng
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
| | - Jinxia Huang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
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12
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Hong X, Wu HM, Zhang XR, Wei CJ, Chen DJ, Huang XJ. The micro-volume liquid focusing effect in Janus membrane and its biosensing application. J Colloid Interface Sci 2021; 592:22-32. [PMID: 33639535 DOI: 10.1016/j.jcis.2021.02.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/31/2021] [Accepted: 02/08/2021] [Indexed: 11/19/2022]
Abstract
The micro-volume analysis and specific detection are both essential requirements in the field of chemical sensing and biological testing. Membrane prefiltration can be used to improve the selectivity and accuracy of detection. But for traditional porous membrane filtration, it is difficult to achieve the transmembrane transport of micro-volume liquid due to the influence of lateral diffusion on membrane surface. Herein, we studied the focused transmembrane transport of micro-volume liquid in the porous polyethersulfone membrane with asymmetric (Janus) surface wettability. The hydrophilic layer (polydopamine) and hydrophobic layer (fluoropolymer) were deposited with controllable thickness by dip-coating and roller-assisted liquid printing. The micro-volume liquid focusing effect was verified by experiments such as visual wetting circle and fluorescent tracer. The liquid focusing effect of as-prepared Janus membrane was integrated with glucose test strip in the application of micro-volume liquid biosensing. Compared with conventional porous membrane, detected signal amplitude and response time were improved 7.5× and 2.7×, respectively. In summary, this research studied the dynamics of liquid transport through Janus membrane and provides a new strategy for microfluidic detection applications through balancing detection volume, time and selectivity by the advantage of micro-volume liquid focusing effect.
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Affiliation(s)
- Xiao Hong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hui-Min Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xin-Ran Zhang
- Medical College, Hangzhou Normal University, Hangzhou 311121, China
| | - Chen-Jie Wei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Da-Jing Chen
- Medical College, Hangzhou Normal University, Hangzhou 311121, China.
| | - Xiao-Jun Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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13
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Wu Z, Yin K, Wu J, Zhu Z, Duan JA, He J. Recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability. NANOSCALE 2021; 13:2209-2226. [PMID: 33480955 DOI: 10.1039/d0nr06639g] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Janus wettability membranes have received much attention because of their asymmetric surface wettability. On the basis of this distinctiveness from traditional symmetrical membranes, relevant scholars have been inspired to pursue many innovations utilizing such membranes. Femtosecond laser microfabrication shows many advantages, such as precision, short time, and environmental friendliness, over traditional fabrication methods. Now this has been applied in structuring Janus membranes by researchers. This review covers recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability. The background in femtosecond laser-structured Janus membranes is first discussed, focusing on the Janus wettability membrane and femtosecond laser microfabrication. Then the applications of Janus membranes are introduced, which are divided into unidirectional fluid transport, oil-water separation, fog harvesting, and seawater desalination. Finally, based on femtosecond laser-structured Janus membranes, some existing problems are pointed out and future perspectives proposed.
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Affiliation(s)
- Zhipeng Wu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.
| | - Kai Yin
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China. and The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Junrui Wu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.
| | - Zhuo Zhu
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.
| | - Ji-An Duan
- The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Jun He
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.
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14
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Zhang SM, Zhang YP, Liu ML, Wang BX, Liu PF, Bai X, Cui CX, Qu LB. Smart Janus titanium mesh used as a diode for both liquid droplet and air bubble transport. NEW J CHEM 2021. [DOI: 10.1039/d1nj02998c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Janus titanium mesh was fabricated with unidirectional transport for both liquid droplets in air and gas underwater.
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Affiliation(s)
- Shi-Ming Zhang
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Yu-Ping Zhang
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ming-Lin Liu
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing-Xing Wang
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Peng-Fei Liu
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Xiuzhi Bai
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Cheng-Xing Cui
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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15
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Li Y, Zhang G, Gao A, Cui J, Zhao S, Yan Y. Robust Graphene/Poly(vinyl alcohol) Janus Aerogels with a Hierarchical Architecture for Highly Efficient Switchable Separation of Oil/Water Emulsions. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36638-36648. [PMID: 31523964 DOI: 10.1021/acsami.9b11277] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Given the complexity and diversity of actual oily sewages, developing multifunctional separation materials with features of high separation efficiency and low energy consumption for separating diverse oil/water emulsions is urgently needed, yet it remains a formidable challenge till now. Herein, a superior graphene/poly(vinyl alcohol) Janus aerogel (J-CGPA), showing an intriguing three-dimensional (3D) hierarchical architecture (a dense skin-layer and a larger internal cell network) and desirable asymmetric wettability, was exploited via a simple direct freeze-shaping technique and subsequent mussel-inspired hydrophilic modification. Benefiting from the controlled unilateral decoration of dopamine, the resultant aerogels displayed completely opposite superwettability on two antithetic sides, i.e., one side is highly hydrophobic (water contact angle (WCA), 143°), whereas the other side is superhydrophilic. On the basis of the favorable 3D hierarchical structure and binary cooperative superwetting properties, the Janus aerogels achieved a remarkable switchable separation performance for both highly emulsified oil-in-water and water-in-oil emulsions as well as stratified oil/water mixtures accompanied with outstanding separation efficiencies. Particularly, an ultrahigh permeation flux of 1306 L m-2 h-1 along with a high rejection efficiency of 99.7% was acquired solely under the driving of gravity (<1 kPa), which is 1-2 order of magnitude higher than that of pioneering two-dimensional Janus polymeric/inorganic membranes recently reported. Moreover, together with robust reusability, this novel 3D Janus aerogel indicates a promising practical application for high-performance oily wastewater remediation.
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Affiliation(s)
- Yuzhen Li
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Guangfa Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Ailin Gao
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Jian Cui
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Shuai Zhao
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Yehai Yan
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
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Zhang L, Dong D, Shao L, Xia Y, Zeng T, Wang Y. Cost-effective one-pot surface modified method to engineer a green superhydrophobic sponge for efficient oil/water mixtures as well as emulsions separation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Liu Y, Qu R, Zhang W, Li X, Wei Y, Feng L. Lotus- and Mussel-Inspired PDA-PET/PTFE Janus Membrane: Toward Integrated Separation of Light and Heavy Oils from Water. ACS APPLIED MATERIALS & INTERFACES 2019; 11:20545-20556. [PMID: 31082194 DOI: 10.1021/acsami.9b04775] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Current special wetting materials designed for use with oily wastewater are usually classified as either the oil-removing type or the water-removing type, which are unifunctional and limited by the oil density. Inspired by the integrated Janus system of the lotus leaf as well as the mussel-like mollusks adhered to the lotus, we fabricated a Janus polydopamine (PDA)-polyethylene terephthalate/polytetrafluoroethylene (PET/PTFE) membrane by simple immersion and tape-peeling. This membrane shows a lotuslike Janus wettability, self-cleaning effect, and floating property. Furthermore, the Janus membrane can separate light oil (ρoil < ρwater)/water mixtures with the superhydrophilic side facing upward, while heavy oil (ρoil > ρwater)/water mixtures are separated with the hydrophobic side facing upward. The separation efficiency is outstanding even after 10 repeats (>99.10%). By aid of drainage of acetone, the separation process has avoided the use of external pressure. Moreover, integrated separations of oil-in-water and water-in-oil emulsions were achieved with high efficiency. This simply prepared PDA-PET/PTFE Janus membrane has realized an integrated separation system, overcoming the monotony of traditional special wettability separation membrane and extending the bionics field into oily wastewater treatment.
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Affiliation(s)
- Ya'nan Liu
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
| | - Ruixiang Qu
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
| | - Weifeng Zhang
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
| | - Xiangyu Li
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
| | - Yen Wei
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
| | - Lin Feng
- Department of Chemistry , Tsinghua University , Beijing , 100084 , P. R. China
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Yong J, Yang Q, Guo C, Chen F, Hou X. A review of femtosecond laser-structured superhydrophobic or underwater superoleophobic porous surfaces/materials for efficient oil/water separation. RSC Adv 2019; 9:12470-12495. [PMID: 35515857 PMCID: PMC9063668 DOI: 10.1039/c8ra10673h] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/09/2019] [Indexed: 01/08/2023] Open
Abstract
Oil/water separation (OWS) technology has become an increasingly crucial tool to protect the environment and reduce the economic losses caused by the discharge of oily wastewater and oil spills. Recently, porous materials with superwettability have been applied in effective OWS and have achieved tremendous success. Herein, we review recent advancements of OWS utilizing femtosecond (fs) laser-structured superhydrophobic or underwater superoleophobic porous materials. We will review the enabling materials processing and treatment methods, their surface wettability, the separating methods and processes, and the separation mechanisms. Inspired by lotus leaves and fish scales, superhydrophobic and underwater superoleophobic properties are artificially achieved on substrate surfaces by fs laser processing. By using fs laser-structured superwetting porous materials, various oil/water mixtures (OWMs) are successfully separated through different separation methods. Presently, the research of fs laser-based OWS is still in its infancy. We will also discuss the current challenges and future prospects in this emerging field. It is expected that the advanced features of fs laser microfabrication will lead to exciting applications for OWS.
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Affiliation(s)
- Jiale Yong
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
- The Institute of Optics, University of Rochester Rochester New York 14627 USA
| | - Qing Yang
- School of Mechanical Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
| | - Chunlei Guo
- The Institute of Optics, University of Rochester Rochester New York 14627 USA
| | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
| | - Xun Hou
- State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi'an Jiaotong University Xi'an 710049 PR China
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Zhang J, Liu J, Wang G, Huang L, Chen F, Liu X. Controllable wettability of laser treated aluminum mesh for on-demand oil/water separation. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1524301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jichao Zhang
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
| | - Jiyu Liu
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
| | - Guansong Wang
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
| | - Liu Huang
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
| | - Faze Chen
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
| | - Xin Liu
- Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian , China
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Jiang Q, Li Q, Li J, Li A, Cong R, Si W, Li Z. A Real‐Time Electrochemical Impedance Analysis for Water‐In‐Oil Emulsions of Bitumen Diluted with Naphtha. ChemistrySelect 2018. [DOI: 10.1002/slct.201702633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Qiuyan Jiang
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Qiuhong Li
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Jiao Li
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Aixiang Li
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Rimin Cong
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Weimeng Si
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
| | - Zichuang Li
- School of Materials Science and EngineeringShandong University of Technology Zibo Shandong 255049 (P.R. China
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21
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Zhou C, Feng J, Cheng J, Zhang H, Lin J, Zeng X, Pi P. Opposite Superwetting Nickel Meshes for On-Demand and Continuous Oil/Water Separation. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04517] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cailong Zhou
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jinxin Feng
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jiang Cheng
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hui Zhang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jing Lin
- School
of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xinjuan Zeng
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Pihui Pi
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Liu YQ, Han DD, Jiao ZZ, Liu Y, Jiang HB, Wu XH, Ding H, Zhang YL, Sun HB. Laser-structured Janus wire mesh for efficient oil-water separation. NANOSCALE 2017; 9:17933-17938. [PMID: 29124264 DOI: 10.1039/c7nr06110b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We report here the fabrication of a Janus wire mesh by a combined process of laser structuring and fluorosilane/graphene oxide (GO) modification of the two sides of the mesh, respectively, toward its applications in efficient oil/water separation. Femtosecond laser processing has been employed to make different laser-induced periodic surface structures (LIPSS) on each side of the mesh. Surface modification with fluorosilane on one side and GO on the other side endows the two sides of the Janus mesh with distinct wettability. Thus, one side is superhydrophobic and superoleophilic in air, and the other side is superhydrophilic in air and superoleophobic under water. As a proof of concept, we demonstrated the separation of light/heavy oil and water mixtures using this Janus mesh. To realize an efficient separation, the intrusion pressure that is dominated by the wire mesh framework and the wettability should be taken into account. Our strategy may open up a new way to design and fabricate Janus structures with distinct wettability; and the resultant Janus mesh may find broad applications in the separation of oil contaminants from water.
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Affiliation(s)
- Yu-Qing Liu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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