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Liu Y, Yuan G, Xie F, An Y, Sun J, Zhao N, Deng Y, Li L, Singh SC, Ngo CV, Li W, Guo C. Fecalphobic oil-coated femtosecond-laser-processed PTFE surface. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Ding X, Chen B, Li M, Liu R, Zhao J, Hu J, Fu X, Tong Y, Lu H, Lin J. Template assisted preparation of silicone (polydimethylsiloxane) elastomers and their self-cleaning application. RSC Adv 2022; 12:16835-16842. [PMID: 35754869 PMCID: PMC9171589 DOI: 10.1039/d2ra02583c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/01/2022] [Indexed: 11/21/2022] Open
Abstract
The formation of self-cleaning functions on silicone elastomers is crucial for practical applications but still challenging. In this study, superhydrophobic silicone elastomers (SHSEs) with a 3D-hierarchical microstructure were achieved during the curing process with the assistance of a homemade template. The micro-nano structure formed by the assistance of the template makes the silicone elastomer surface achieve robust superhydrophobicity with a WCA at ∼163°, which can easily self-clean, removing surface contamination. Also, TiO2 particles transferred from the template endow the surface with photocatalytic functions, which can degrade organic pollutants under UV irradiation. After sandpaper abrasion, the formed SHSE can maintain its excellent hydrophobicity and show liquid repellency to wine and coffee droplets. The SHSEs with self-cleaning functions have promising applications in water treatment, medical facilities, and wearable devices.
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Affiliation(s)
- Xiaohong Ding
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Biya Chen
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Muchang Li
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Ruilai Liu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Jinyun Zhao
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Jiapeng Hu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Xingping Fu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China
| | - Yuejin Tong
- College of Chemistry and Materials Science, Fujian Normal University 350007 Fuzhou China
| | - Hanqing Lu
- School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
| | - Jing Lin
- School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
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3
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Yong J, Yang Q, Hou X, Chen F. Emerging Separation Applications of Surface Superwettability. NANOMATERIALS 2022; 12:nano12040688. [PMID: 35215017 PMCID: PMC8878479 DOI: 10.3390/nano12040688] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/13/2022] [Accepted: 02/15/2022] [Indexed: 11/17/2022]
Abstract
Human beings are facing severe global environmental problems and sustainable development problems. Effective separation technology plays an essential role in solving these challenges. In the past decades, superwettability (e.g., superhydrophobicity and underwater superoleophobicity) has succeeded in achieving oil/water separation. The mixture of oil and water is just the tip of the iceberg of the mixtures that need to be separated, so the wettability-based separation strategy should be extended to treat other kinds of liquid/liquid or liquid/gas mixtures. This review aims at generalizing the approach of the well-developed oil/water separation to separate various multiphase mixtures based on the surface superwettability. Superhydrophobic and even superoleophobic surface microstructures have liquid-repellent properties, making different liquids keep away from them. Inspired by the process of oil/water separation, liquid polymers can be separated from water by using underwater superpolymphobic materials. Meanwhile, the underwater superaerophobic and superaerophilic porous materials are successfully used to collect or remove gas bubbles in a liquid, thus achieving liquid/gas separation. We believe that the diversified wettability-based separation methods can be potentially applied in industrial manufacture, energy use, environmental protection, agricultural production, and so on.
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Affiliation(s)
- Jiale Yong
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (J.Y.); (X.H.)
| | - Qing Yang
- School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
| | - Xun Hou
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (J.Y.); (X.H.)
| | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (J.Y.); (X.H.)
- Correspondence:
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4
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Yang X, Song R, He L, Wu L, He X, Liu X, Tang H, Lu X, Ma Z, Tian P. Optimization mechanism and applications of ultrafast laser machining towards highly designable 3D micro/nano structuring. RSC Adv 2022; 12:35227-35241. [DOI: 10.1039/d2ra05148f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022] Open
Abstract
The optimization mechanism of ultrafast laser machining is introduced. The specific applications of laser processed 3D micro/nano structures in optical, electrochemical and biomedical fields are elaborated, and perspectives are presented.
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Affiliation(s)
- Xiaomeng Yang
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Ruiqi Song
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Liang He
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
- Med+X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Leixin Wu
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Xin He
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoyu Liu
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Hui Tang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xiaolong Lu
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Zeyu Ma
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Peng Tian
- School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
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5
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Ding W, Dorao CA, Fernandino M. Improving superamphiphobicity by mimicking tree-branch topography. J Colloid Interface Sci 2021; 611:118-128. [PMID: 34933190 DOI: 10.1016/j.jcis.2021.12.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/17/2022]
Abstract
when a droplet impacts on a superhydrophobic structured surface below a certain impact velocity, the droplet can bounce off completely from the surface. However, above such velocity a fraction of the droplet will pin on the surface. Surfaces capable of repelling water droplets are ubiquitous in nature or have been artificially fabricated. However, as the surface tension of the liquid is reduced, the capability of the surface to remain non-wetting gets hindered. Despite progress in previous research, the understanding and development of superamphiphobic surface to impacting low surface tension droplets remains elusive. It is proposed that multi-layer re-entrant like roughness can further enhance the anti-wetting properties also for low surface tension fluids. In this work, we produce patterned conical micro-structures with lateral nano-sized roughness. Furthermore, the droplet impact experiments are conducted on various surfaces with variable surface tensions (27 mN/m - 72 mN/m) by using droplets with different Weber numbers (2-170). We show that conical microstructures with lateral roughness mimicking tree-branches provides a surface topology capable of absorbing the force exerted by the droplet during the impact which prevents the droplet from pinning on the surface at higher impact velocity even for low surface tension droplets. Our study has significance for understanding the liquid interaction mechanism with the surface during the impact process and for the associated surface design considerations.
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Affiliation(s)
- Wenwu Ding
- Department of Energy and Process Engineering. Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Carlos Alberto Dorao
- Department of Energy and Process Engineering. Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Maria Fernandino
- Department of Energy and Process Engineering. Norwegian University of Science and Technology, Trondheim 7491, Norway.
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6
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Hou C, Cao C. Superhydrophobic cotton fabric membrane prepared by fluoropolymers and modified nano-SiO 2 used for oil/water separation. RSC Adv 2021; 11:31675-31687. [PMID: 35496827 PMCID: PMC9041685 DOI: 10.1039/d1ra06393f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/01/2021] [Indexed: 12/11/2022] Open
Abstract
At present, the preparation methods of oil–water separation membranes include chemical vapor deposition, electrospinning, atom transfer radical polymerization, etc. Basically, they all have issues of low recycling rate and incontinuous use. In this paper, the epoxy polymer P(GMA-r-MMA) obtained by traditional radical polymerization of glycidyl methacrylate (GMA) monomer and methacrylic acid (MMA) monomer, and pentafluoropropionic acid (PFPA) is used to modify polymer P(GMA-r-MMA) to obtain fluorine-containing epoxy polymer P(GMA-r-MMA)-g-PFPA. Secondly, fluorine-containing epoxy polymer P(GMA-r-MMA)-g-PFPA and amino-modified nano SiO2 is blended, and the cotton fabric is dip-coated to obtain a superhydrophobic surface, thereby preparing an oil–water separation membrane. By controlling the solution concentration, dipping time, drying time and other conditions, the superhydrophobic performance of the separation membrane was characterized, and the best construction conditions for the superhydrophobic surface were obtained: 0.3 mg mL−1 polymer concentration, immersion time 6 h, drying temperature 120°, and drying time 4 h, and the maximum water contact angle can reach to 150° ± 2°. Finally, the cotton fabric was modified under the best dipping conditions, and used as an oil–water separation membrane to study the oil–water separation performance of n-hexane, n-octane, kerosene, chloroform and water mixtures in batch operation and continuous operation. In batch operations, the separation efficiency can reach 99% and can achieve 5 consecutive high-efficiency separations without intermittent drying. In continuous flow operation, oil–water separation can last for more than 12 hours and the separation efficiency can reach 98%. It also has stable oil–water separation performance for oil–water emulsion. Cotton modified with polymer P(GMA-r-MMA)-g-PFPA and modified silica can obtain super-hydrophobic surfaces, and can be used as oil–water separation membrane for hexane, octane, kerosene, chloroform and water mixtures in batch and continuous operation.![]()
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Affiliation(s)
- Chengmin Hou
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology Xi'an 710048 Shaanxi Province People's Republic of China
| | - Congjun Cao
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology Xi'an 710048 Shaanxi Province People's Republic of China
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7
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Fan H, Guo Z. Bioinspired surfaces with wettability: biomolecule adhesion behaviors. Biomater Sci 2020; 8:1502-1535. [PMID: 31994566 DOI: 10.1039/c9bm01729a] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Surface wettability plays an important role in regulating biomolecule adhesion behaviors. The biomolecule adhesion behaviors of superwettable surfaces have become an important topic as an important part of the interactions between materials and organisms. In addition to general research on the moderate wettability of surfaces, the studies of biomolecule adhesion behaviors extend to extreme wettability ranges such as superhydrophobic, superhydrophilic and slippery surfaces and attract both fundamental and practical interest. In this review, we summarize the recent studies on biomolecule adhesion behaviors on superwettable surfaces, especially superhydrophobic, superhydrophilic and slippery surfaces. The first part will focus on the influence of extreme wettability on cell adhesion behaviors. The second part will concentrate on the adhesion behaviors of biomacromolecules on superwettable surfaces including proteins and nucleic acids. Finally, the influences of wettability on small molecule adhesion behaviors on material surfaces have also been investigated. The mechanism of superwettable surfaces and their influences on biomolecule adhesion behaviors have been studied and highlighted.
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Affiliation(s)
- Haifeng Fan
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China. and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China. and 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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8
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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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9
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Recent Advances in Femtosecond Laser-Induced Surface Structuring for Oil–Water Separation. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9081554] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Femtosecond (FS) laser-induced surface structuring is a robust, maskless, non-contact, and single-step process for producing micro- and nanoscale structures on a material’s surface, which remarkably alters the optical, chemical, wetting, and tribological properties of that material. Wettability control, in particular, is of high significance in various applications, including self-cleaning, anti-fouling, anti-icing, anti-corrosion, and, recently, oil–water separation. Due to growing energy demands and rapid industrialization, oil spill accidents and organic industrial discharges frequently take place. This poses an imminent threat to the environment and has adverse effects on the economy and the ecosystem. Oil–water separation and oil waste management require mechanically robust, durable, low-cost, and highly efficient oil–water manipulation systems. To address this challenge superhydrophobic–superoleophilic and superhydrophilic–underwater superoleophobic membrane filters have shown promising results. However, the recyclability and durability issues of such filters are limiting factors in their industrial application, as well as in their use in oil spill accidents. In this article, we review and discuss the recent progress in the application of FS laser surface structuring in producing durable and robust oil–water separation membrane filters. The wide variety of surface structures produced by FS laser nano- and micromachining are initially presented here, while the excellent wetting characteristics shown by specific femtosecond-induced structures are demonstrated. Subsequently, the working principles of oil–water separation membranes are elaborated, and the most recent advances in the topic are analyzed and discussed.
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10
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Wang N, Wang Q, Xu S, Zheng X, Zhang M. Facile fabrication of amphiphobic surfaces on copper substrates with a mixed modified solution. RSC Adv 2019; 9:17366-17372. [PMID: 35519853 PMCID: PMC9064577 DOI: 10.1039/c9ra02688f] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/28/2019] [Indexed: 11/21/2022] Open
Abstract
Amphiphobic surfaces possessing superhydrophobicity, high oleophobicity and self-cleaning properties were facilely and efficiently fabricated with STA/PFOA mixed modified solution.
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Affiliation(s)
- Ning Wang
- Institute of NanoEngineering
- College of Civil Engineering and Architecture
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Qing Wang
- Institute of NanoEngineering
- College of Civil Engineering and Architecture
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Shuangshuang Xu
- Institute of NanoEngineering
- College of Civil Engineering and Architecture
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Xu Zheng
- Institute of NanoEngineering
- College of Civil Engineering and Architecture
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Mingya Zhang
- Institute of NanoEngineering
- College of Civil Engineering and Architecture
- Shandong University of Science and Technology
- Qingdao 266590
- China
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