1
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Liu H, Guo L, Dai Y, Li M, Wang D, Li Y, Qi H. Facile fabrication of cellulose-based hydrophobic paper via Michael addition reaction. Int J Biol Macromol 2023; 253:127513. [PMID: 37865371 DOI: 10.1016/j.ijbiomac.2023.127513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/27/2023] [Accepted: 10/10/2023] [Indexed: 10/23/2023]
Abstract
The inherent highly hydrophilic feature of cellulose-based paper hinders its application in many fields. Herein, a cellulose-based hydrophobic paper was fabricated based on surface chemical modification. Firstly, the hydrophobic acrylate components were bonded to the cellulose acetoacetate (CAA) fibers to obtain CAA graft acrylate (CAA-X) fibers through Michael addition reaction. Subsequently, CAA-X fibers were processed into paper via wet papermaking technology. The resulting paper exhibited good hydrophobic performance (water contact angle was up to 135°) with an air permeability of 24.8 μm/Pa·s. The hydrophobicity of paper was very stable and remained even after treating with different solvents. Moreover, the hydrophobic properties of this paper could be adjusted by changing the type of acrylate component. It should be noted that the surface modification strategy has no obvious effects on the whiteness (79.8%), writing, and printing properties of the cellulose fibers. Thus, it is a simple, benign, and efficient strategy for the construction of cellulose-based hydrophobic paper, which has great potential to be used in paper tableware, oil-water separation, watercolor protection, and food packaging fields.
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Affiliation(s)
- Hongchen Liu
- College of Textiles, Zhongyuan University of Technology, Zhengzhou 450007, China.
| | - Lei Guo
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yamin Dai
- College of Textiles, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Mengya Li
- Faculty of Engineering, Huanghe Science and Technology College, Zhengzhou 450063, China
| | - Dongwei Wang
- College of Textiles, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Yun Li
- Guangdong Yunzhao Medical Technology Co., Ltd., Guangzhou 510641, China
| | - Haisong Qi
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
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2
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He C, He J, Cui S, Fan X, Li S, Yang Y, Tan X, Zhang X, Mao J, Zhang L, Deng C. Novel Effective Photocatalytic Self-Cleaning Coatings: TiO 2-Polyfluoroalkoxy Coatings Prepared by Suspension Plasma Spraying. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3123. [PMID: 38133021 PMCID: PMC10745750 DOI: 10.3390/nano13243123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/11/2023] [Accepted: 11/14/2023] [Indexed: 12/23/2023]
Abstract
Photocatalytic coatings can degrade volatile organic compounds into non-toxic products, which has drawn the attention of scholars around the world. However, the pollution of dust on the coating adversely affects the photocatalytic efficiency and service life of the coating. Here, a series of TiO2-polyfluoroalkoxy (PFA) coatings with different contents of PFA were fabricated by suspension plasma spraying technology. The results demonstrate that the hybrid coatings contain a large number of circular and ellipsoidal nanoparticles and a porous micron-nano structure due to the inclusion of PFA. According to the optimized thermal spraying process parameters, TiO2 nanoparticles were partially melted to retain most of the anatase phases, whereas PFA did not undergo significant carbonization. As compared to the TiO2 coating, the static contact angle of the composite coating doped with 25 wt.% PFA increased from 28.2° to 134.1°. In addition, PFA strongly adsorbs methylene blue, resulting in a greater involvement of methylene blue molecules in the catalyst, where the catalytic rate of hybrid coatings is up to 95%. The presented nanocomposite coatings possess excellent photocatalytic and self-cleaning properties and are expected to find wider practical applications in the field of photocatalysis.
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Affiliation(s)
- Chunyan He
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Jialin He
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Sainan Cui
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
- Qingdao Haier Refrigerator Co., Ltd., Qingdao 266510, China
| | - Xiujuan Fan
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Shuanjian Li
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Yaqi Yang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Xi Tan
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Xiaofeng Zhang
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Jie Mao
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Liuyan Zhang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Changguang Deng
- The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China
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3
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Li F, Liu G, Liu F, Yang S. A review of self-cleaning photocatalytic surface: Effect of surface characteristics on photocatalytic activity for NO. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121580. [PMID: 37023887 DOI: 10.1016/j.envpol.2023.121580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 03/19/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
Self-cleaning surface has attracted much attention in the field of photocatalytic degradation of NO due to its dirt pickup resistance and self-cleaning effect under the action of rainwater. In this review, the factors affecting NO degradation efficiency were analyzed in terms of photocatalyst characteristics and environmental conditions combined with the photocatalytic degradation mechanism. The feasibility of photocatalytic degradation of NO on superhydrophilic, superhydrophobic and superamphiphobic surfaces was discussed. Furthermore, the effect of special surface characteristics of self-cleaning on photocatalytic NO was highlighted and the improvement of the long-term effect using three self-cleaning surfaces on photocatalytic NO was evaluated and summarized. Finally, the conclusion and outlook were proposed related to the self-cleaning surface for photocatalytic degradation of NO. In future research, the comprehensive effects of the characteristics of photocatalytic materials, self-cleaning characteristics and environmental factors on the photocatalytic degradation of NO and the actual application effects of such self-cleaning photocatalytic surfaces should be further clarified in combination with the engineering. It is believed that this review can provide some theoretical basis and support for the development of self-cleaning surfaces in the field of photocatalytic degradation of NO.
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Affiliation(s)
- Fen Li
- College of Chemistry & Materials Science, Hebei University, Baoding, 071002, China
| | - Guanyu Liu
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China.
| | - Fuqiang Liu
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China
| | - Sanqiang Yang
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China
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4
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Arya RK, Thapliyal D, Pandit A, Gora S, Banerjee C, Verros GD, Sen P. Polymer Coated Functional Catalysts for Industrial Applications. Polymers (Basel) 2023; 15:polym15092009. [PMID: 37177157 PMCID: PMC10180757 DOI: 10.3390/polym15092009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/16/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
Surface engineering of conventional catalysts using polymeric coating has been extensively explored for producing hybrid catalytic material with enhanced activity, high mechanical and thermal stability, enhanced productivity, and selectivity of the desired product. The present review discusses in detail the state-of-the-art knowledge on surface modification of catalysts, namely photocatalysts, electrocatalysts, catalysts for photoelectrochemical reactions, and catalysts for other types of reactions, such as hydrodesulfurization, carbon dioxide cycloaddition, and noble metal-catalyzed oxidation/reduction reactions. The various techniques employed for the polymer coating of catalysts are discussed and the role of polymers in enhancing the catalytic activity is critically analyzed. The review further discusses the applications of biodegradable and biocompatible natural polysaccharide-based polymers, namely, chitosan and polydopamine as prospective coating material.
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Affiliation(s)
- Raj Kumar Arya
- Department of Chemical Engineering, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar 144011, India
| | - Devyani Thapliyal
- Department of Chemical Engineering, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar 144011, India
| | - Anwesha Pandit
- Department of Chemical Engineering, Heritage Institute of Technology, Kolkata 700107, India
| | - Suchita Gora
- Department of Chemical Engineering, Heritage Institute of Technology, Kolkata 700107, India
| | - Chitrita Banerjee
- Department of Chemical Engineering, Heritage Institute of Technology, Kolkata 700107, India
| | - George D Verros
- Laboratory of Polymer and Colour Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Plagiari, Epanomi, P.O. Box 454, 57500 Thessaloniki, Greece
| | - Pramita Sen
- Department of Chemical Engineering, Heritage Institute of Technology, Kolkata 700107, India
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5
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Xu W, Xu L, Pan H, Wang L, Shen Y. Superamphiphobic Cotton Fabric with Photocatalysis and Ultraviolet Shielding Property Based on Hierarchical ZnO/Halloysite Nanotubes Hybrid Particles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Park S, Huo J, Shin J, Heo KJ, Kalmoni JJ, Sathasivam S, Hwang GB, Carmalt CJ. Production of an EP/PDMS/SA/AlZnO Coated Superhydrophobic Surface through an Aerosol-Assisted Chemical Vapor Deposition Process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7825-7832. [PMID: 35696726 PMCID: PMC9245182 DOI: 10.1021/acs.langmuir.2c01060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In this study, a superhydrophobic coating on glass has been prepared through a single-step aerosol-assisted chemical vapor deposition (AACVD) process. During the process, an aerosolized precursor containing polydimethylsiloxane, epoxy resin, and stearic acid functionalized Al-doped ZnO nanoparticles was deposited onto the glass at 350 °C. X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy showed that the precursor was successfully coated and formed a nano/microstructure (surface roughness: 378.0 ± 46.1 nm) on the glass surface. The coated surface had a water contact angle of 159.1 ± 1.2°, contact angle hysteresis of 2.2 ± 1.7°, and rolling off-angle of 1°, indicating that it was superhydrophobic. In the self-cleaning test of the coated surface at a tilted angle of 20°, it was shown that water droplets rolled and washed out dirt on the surface. The stability tests showed that the surface remained superhydrophobic after 120 h of exposure to ultraviolet (UV) irradiation and even after heat exposure at 350 °C. In addition, the surface was highly repellent to water solutions of pH 1-13. The results showed that the addition of the functionalized nanoparticles into the precursor allowed for the control of surface roughness and provided a simplified single-step fabrication process of the superhydrophobic surface. This provides valuable information for developing the manufacturing process for superhydrophobic surfaces.
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Affiliation(s)
- Seonghyeok Park
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Jiatong Huo
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Juhun Shin
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Ki Joon Heo
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Julie Jalila Kalmoni
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Sanjayan Sathasivam
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
- School
of Engineering, London South Bank University, 103 Borough Rd, London SE1 0AA, United
Kingdom
| | - Gi Byoung Hwang
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Claire J. Carmalt
- Materials
Chemistry Research Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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7
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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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8
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Robust multifunctional superhydrophobic, photocatalytic and conductive fabrics with electro-/photo-thermal self-healing ability. J Colloid Interface Sci 2022; 614:1-11. [PMID: 35078081 DOI: 10.1016/j.jcis.2022.01.090] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/30/2021] [Accepted: 01/13/2022] [Indexed: 01/16/2023]
Abstract
The fabrication of superhydrophobic and conductive fabrics that can conveniently and repeatedly restore the lost superhydrophobicity, caused by either the surface accumulation of trace organic contaminants or the chemical damage to surface components, remains challenging. Herein, we report a multifunctional superhydrophobic and conductive cotton fabric that integrates not only the photocatalytic activity for cleaning organic contaminants, but also the self-healing ability enabled by either electro-thermal or photo-thermal heating besides convection oven heating. The fabric was fabricated through the polydopamine (PDA)-assisted deposition of photocatalyst Ag/CdS and the subsequent thiol-Ag self-assembly. Either UV or visible light irradiation is able to decompose the surface organic contaminants, and the photocatalysis-induced slight damage on super water-repellency is curable by heating. The Ag layer endows the fabric with antibacterial property and conductivity along with the electro-/photo-thermal conversion ability, which offers relatively convenient ways of heating for curing the surface chemical damages caused by O2 plasma etching or accelerated washing. Of particular importance is that the fabric still shows super water-repellency even after 18 cycles of accelerated washing, which equals to 90 normal home laundering cycles. The combination of these multiple functions makes this fabric very promising for a wide range of wearable applications.
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9
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Xu L, Wang W, Zhang L, Wang D, Zhang A. Ultrasensitive and Recyclable Multifunctional Superhydrophobic Sensor Membrane for Underwater Applications, Weather Monitoring, and Wastewater Treatment. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21623-21635. [PMID: 35471018 DOI: 10.1021/acsami.2c01345] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Although flexible sensors have attracted considerable attention in emerging fields, including wearable electronics and soft robotics, their stability must be considered in practical applications, especially the effects of external factors on the sensing performance. Herein, a recyclable flexible sensor with superhydrophobicity and a highly sensitive strain response was developed by combining electrospinning and ultrasonication anchoring techniques. The constructed hierarchical network structure is composed of the fluorine-free superhydrophobic multiwalled carbon nanotubes and a porous elastomer membrane substrate reinforced by nanoparticles. The obtained sensor exhibited exceptional strain-sensing performance in terms of ultrahigh sensitivity (maximum gauge factor of 12 172.46), a fast response time of 80 ms, and excellent durability (10 000 cycles). Based on these outstanding merits, the strain sensor can detect various human motions without being interfered with by harsh environments. Moreover, superhydrophobic membranes can be combined with electronic devices for weather monitoring and underwater sensing. Noteworthily, damaged sensors can be quickly dissolved by a small amount of cyclohexane, enabling material recovery. The recyclable multifunctional membranes could reduce the potential pollution to the environment and show highly promising applications in complex environments.
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Affiliation(s)
- Liqiang Xu
- State Key Laboratory of Polymers Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China
| | - Weiwen Wang
- State Key Laboratory of Polymers Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China
| | - Lun Zhang
- State Key Laboratory of Polymers Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China
| | - Dong Wang
- State Key Laboratory of Polymers Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China
| | - Aimin Zhang
- State Key Laboratory of Polymers Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China
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10
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Photocatalytic TiO2/PDMS coating to drive self-cleaning: a facile approach for anti-stain silicone rubber surfaces. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03789-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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11
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Wang X, Ao W, Sun S, Zhang H, Zhou R, Li Y, Wang J, Ding H. Tunable Adhesive Self-Cleaning Coating with Superhydrophobicity and Photocatalytic Activity. NANOMATERIALS 2021; 11:nano11061486. [PMID: 34205225 PMCID: PMC8229519 DOI: 10.3390/nano11061486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 01/10/2023]
Abstract
Superhydrophobic coatings with intelligent properties have attracted much attention because of their wide application in many fields. However, there is a limited amount of literature on superhydrophobic coatings whose wettability and adhesion can be adjusted by UV irradiation and calcination at the same time. In this study, amorphous SiO2 microspheres (A-SiO2) and nano-TiO2 particles (N-TiO2) were used to fabricate A-SiO2/N-TiO2 composites by wet grinding, and then, they were modified with polydimethylsiloxane (PDMS) and sprayed onto substrate surfaces to obtain a tunable adhesive superhydrophobic A-SiO2/N-TiO2@PDMS coating. It is worth noting that the wettability and adhesion of the coating to water droplets could be adjusted by UV irradiation and calcination. The mechanisms of the aforementioned phenomena were studied. Moreover, methyl orange solution could be degraded by the coating due to its photocatalysis. The as-prepared coating had good adaptation to different substrates and outdoor environments. Moreover, the surfaces of these coatings exhibited the same liquid repellency towards different droplets. This research provides an environmental strategy to prepare advanced self-cleaning coatings.
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12
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Wang Y, Guo Z, Liu W. Adhesion behaviors on four special wettable surfaces: natural sources, mechanisms, fabrications and applications. SOFT MATTER 2021; 17:4895-4928. [PMID: 33942819 DOI: 10.1039/d1sm00248a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The study of adhesion behaviors on solid-liquid surfaces plays an important role in scientific research and development in various fields, such as medicine, biology and agriculture. The contact angle and sliding angle of the liquid on the solid surface are commonly used to characterize and measure the wettability of a particular surface. They have a wide range of values, which results in different wettability. It boils down to the adhesion of solid surfaces to liquids. This feature article is aimed at revealing the essence of the adhesion behavior from the aspects of controlling the chemical composition or changing the geometrical microstructure of the surface, and reviewing the natural sources, wetting models, preparation methods and applications of four kinds of typical solid-liquid surfaces (low-adhesion superhydrophobic surfaces, high-adhesion superhydrophobic surfaces, slippery liquid-infused porous surfaces (SLIPS) and hydrophilic/superhydrophilic surfaces). Last, a summary and outlook on this field are given to point out the current challenges and the potential research directions of surface adhesion in the coming future.
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Affiliation(s)
- Yi Wang
- 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
- 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.
| | - Weimin Liu
- 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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13
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Yun T, Tong H, Wang Y, Qian F, Cheng Y, Lv Y, Lu J, Li M, Wang H. Fabrication of the superhydrophobic natural cellulosic paper with different wettability and oil/water separation application. J Appl Polym Sci 2020. [DOI: 10.1002/app.50371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Tongtong Yun
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Hao Tong
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Yilin Wang
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Fang Qian
- School of Food Science and Technology Dalian Polytechnic University Dalian China
| | - Yi Cheng
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Yanna Lv
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Jie Lu
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
| | - Mengjie Li
- College of Resources and Environment Gansu Agricultural University Lanzhou China
| | - Haisong Wang
- School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian China
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14
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Janowicz NJ, Li H, Heale FL, Parkin IP, Papakonstantinou I, Tiwari MK, Carmalt CJ. Fluorine-Free Transparent Superhydrophobic Nanocomposite Coatings from Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13426-13438. [PMID: 33146540 DOI: 10.1021/acs.langmuir.0c01767] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In recent decades, there has been a growing interest in the development of functional, fluorine-free superhydrophobic surfaces with improved adhesion for better applicability into real-world problems. Here, we compare two different methods, spin coating and aerosol-assisted chemical vapor deposition (AACVD), for the synthesis of transparent fluorine-free superhydrophobic coatings. The material was made from a nanocomposite of (3-aminopropyl)triethoxysilane (APTES) functional mesoporous silica nanoparticles and titanium cross-linked polydimethylsiloxane with particle concentrations between 9 to 50 wt %. The silane that was used to lower the surface energy consisted of a long hydrocarbon chain without fluorine groups to reduce the environmental impact of the composite coating. Both spin coating and AACVD resulted in the formation of superhydrophobic surfaces with advancing contact angles up to 168°, a hysteresis of 3°, and a transparency of 90% at 550 nm. AACVD has proven to produce more uniform coatings with concentrations as low as 9 wt %, reaching superhydrophobicity. The metal oxide cross-linking improves the adhesion of the coating to the glass. Overall, AACVD was the more optimal method to prepare superhydrophobic coatings compared to spin coating due to higher contact angles, adhesion, and scalability of the fabrication process.
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Affiliation(s)
- Norbert J Janowicz
- Nanoengineered Systems Laboratory, Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Hangtong Li
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Frances L Heale
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Ivan P Parkin
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Ioannis Papakonstantinou
- Photonic Innovations Lab, Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Manish K Tiwari
- Nanoengineered Systems Laboratory, Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
- Wellcome/EPSRC Centre for Interventional and Surgical Sciences, University College London, London W1W 7TS, United Kingdom
| | - Claire J Carmalt
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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15
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Baldelli A, Ou J, Li W, Amirfazli A. Spray-On Nanocomposite Coatings: Wettability and Conductivity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11393-11410. [PMID: 32822195 DOI: 10.1021/acs.langmuir.0c01020] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanocomposite coatings, i.e., a combination of nanocompounds, and a polymer matrix together with suitable additives and solvents is a very versatile method for producing multifunctional coatings. Some of the most desired coating properties have a high repellency to liquids (e.g., superhydrophobic and/or superoleophobic) and electrical and thermal conductivities. From a practical perspective, coatings that can be sprayed are very suitable for large-scale production, conformity, and reduced time and cost. Carbon-based, metallic, and ceramic are the three groups of nanocompounds commonly used to formulate spray-on nanocomposite coatings. In this invited feature article, we discuss the applications, advantages, and challenges of using such nanocompounds to produce coatings with good water repellency or/and elevated electrical or/and thermal conductivities. We also discuss the role of additives and solvents briefly in relation to the properties of the coatings. Important spraying parameters, such as stand-off distance and its influence on the final coating properties, will also be examined. Our overall aim is to provide a guideline for the production of practical multifunctional nanocomposites utilizing carbon-based, metallic, or ceramic nanoparticles or nanofibers that covers both aspects of in-air wettability and conductivity under one umbrella.
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Affiliation(s)
- Alberto Baldelli
- School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
- Department of Mechanical Engineering University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Junfei Ou
- School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Wen Li
- School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Alidad Amirfazli
- School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
- Department of Mechanical Engineering, York University, Toronto, Ontario M3J 1P3, Canada
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16
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Zhu H, Wu L, Meng X, Wang Y, Huang Y, Lin M, Xia F. An anti-UV superhydrophobic material with photocatalysis, self-cleaning, self-healing and oil/water separation functions. NANOSCALE 2020; 12:11455-11459. [PMID: 32324189 DOI: 10.1039/d0nr01038c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, a superhydrophobic material was successfully prepared with a water contact angle of about 155.5° and a rolling-off angle of about 6.8°, which showed superior UV resistance (365 nm, 5.0 ± 0.6 mW cm-2) for an illumination period of 30 h. The degradation of organic dyes, such as Nile red, methyl blue and orange, could be also achieved with our prepared surface. Anti-UV water-repellency was combined with photocatalysis to realize a self-cleaning surface for both dirt removal and organic degradation. Moreover, the reversible changes with superhydrophobicity and superhydrophilicity were induced by the self-healing property on such a surface, contributing to heavy and light oils/water separation. Because of ultra-long UV-resistance, photocatalysis, self-cleaning, self-healing and oil/water separation functions, our reported surface has potential for application in a variety of fields.
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Affiliation(s)
- Hai Zhu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Lizhen Wu
- Department of Chemistry, Jinan University, Guangzhou 510632, People's Republic of China
| | - Xiang Meng
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Yongqian Wang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Yu Huang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China. and Zhejiang Institute, China University of Geosciences, Hangzhou, 311305, China
| | - Meihua Lin
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Fan Xia
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
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17
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Wu B, Lyu J, Peng C, Liu J, Xing S, Jiang D, Ju S, Tiwari MK. Compression molding processed superhydrophobic CB/CeO2/PVDF/CF nanocomposites with highly robustness, reusability and multifunction. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124533] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Li D, Xu W, Cheng H, Xi K, Xu B, Jiang H. One-Step Thermochemical Conversion of Biomass Waste into Superhydrophobic Carbon Material by Catalytic Pyrolysis. GLOBAL CHALLENGES (HOBOKEN, NJ) 2020; 4:1900085. [PMID: 32257381 PMCID: PMC7117845 DOI: 10.1002/gch2.201900085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/03/2020] [Indexed: 05/05/2023]
Abstract
Preparation of superhydrophobic carbon materials from lignocellulosic biomass waste via one-step carbonization is very difficult due to the existences of polar functional groups and ashes, which are extremely hydrophilic. Herein, superhydrophobic carbon materials can be facilely synthesized by catalytic pyrolysis of biomass waste using FeCl3 as catalyst. The results show that the surface energy of lignin-derived char (CharL) is significantly reduced to 19.25 mN m-1 from 73.29 mN m-1, and the water contact angle increased from 0 to 151.5°, by interaction with FeCl3. Multiple characterizations and control experiments demonstrate that FeCl3 can catalyze the pyrolytic volatiles to form a rough graphite and diamond-like carbon layer that isolates the polar functional groups and ashes on CharL, contributing to the superhydrophobicity of the CharL. The one-step catalytic pyrolysis is able to convert different natural biomass waste (e.g., lignin, cellulose, sawdust, rice husk, maize straw, and pomelo peel) into superhydrophobic carbon materials. This study contributes new information related to the interfacial chemistry during the sustainable utilization of biomass waste.
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Affiliation(s)
- De‐Chang Li
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
| | - Wan‐Fei Xu
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
| | - Hui‐Yuan Cheng
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
| | - Kun‐Fang Xi
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
| | - Bu‐De Xu
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
| | - Hong Jiang
- CAS Key Laboratory of Urban Pollutants ConversionDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei230026China
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19
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Sethy NK, Arif Z, Mishra PK, Kumar P. Nanocomposite film with green synthesized TiO2 nanoparticles and hydrophobic polydimethylsiloxane polymer: synthesis, characterization, and antibacterial test. JOURNAL OF POLYMER ENGINEERING 2020. [DOI: 10.1515/polyeng-2019-0257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe green synthesis of nanoparticles is of considerable interest because it is eco-friendly, cost-effective, biocompatible, and non-toxic. Split pulse extract was used as a reducing/capping agent for the synthesis of titanium dioxide (TiO2) nanoparticles. Green synthesized nanoparticles were embedded in the polydimethylsiloxane (PDMS) membrane by using a solution casting technique to develop a nanocomposite. This thin film was characterized using Fourier transform infrared spectroscopy, scanning probe microscopy, high-resolution scanning electron microscopy, ultraviolet-visible spectroscopy, and contact angle analysis. The antibacterial property of the TiO2/PDMS nanocomposite was examined, and the results showed excellent antibacterial activity of TiO2/PDMS compared to PDMS without nanoparticles. The nanocomposite film exhibited antibacterial activity against Gram-positive and Gram-negative bacteria in the presence of TiO2 nanoparticles in the polymer. Here, different weight percentages of TiO2 nanoparticles, i.e. 0%, 7%, 10%, and 13%, were loaded on the PDMS surface to enhance its antibacterial activity. The green synthesis of TiO2 nanoparticles embedded in PDMS and their suitability for antibacterial activity are reported for the first time.
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Affiliation(s)
- Naresh Kumar Sethy
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi-221005, India
| | - Zeenat Arif
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi-221005, India
| | - Pradeep Kumar Mishra
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi-221005, India
| | - Pradeep Kumar
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi-221005, India
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20
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Chen TL, Huang CY, Xie YT, Chiang YY, Chen YM, Hsueh HY. Bioinspired Durable Superhydrophobic Surface from a Hierarchically Wrinkled Nanoporous Polymer. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40875-40885. [PMID: 31588736 DOI: 10.1021/acsami.9b14325] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inspired by complex multifunctional leaves, in this study, we created robust hierarchically wrinkled nanoporous polytetrafluoroethene (PTFE) surfaces that exhibit superhydrophobic properties by combination of PTFE micellization and spontaneous surface wrinkling on a commercially available thermoretractable polystyrene (PS) sheet. A PTFE dispersion was coated onto the PS sheet, followed by thermal treatment to remove the surfactants surrounding the PTFE particles, and surface wrinkling was induced through a dynamic thermal contraction process. Thermally induced contraction from the PS sheet provided the driving force for developing and stabilizing micrometer-sized wrinkle formation, whereas the nanometer-sized PTFE particle aggregation formed a rigid nanoporous film, providing its intrinsic hydrophobic character. By combining the hierarchical interfacial structure and chemical composition, hierarchically wrinkled nanoporous PTFE surfaces were fabricated, which exhibited extremely high water repellence (water contact angle of ∼167°) and a water rolling-off angle lower than 5°. The wrinkled patterns could intimately bind the nanoporous PTFE layer through enhanced adhesion from their curved surface and viscous liquid surfactants, making these surfaces mechanically robust and offering potentially extendable alternatives with self-cleaning, antifouling, and drag-reducing properties.
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21
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Wang W, Liu R, Chi H, Zhang T, Xu Z, Zhao Y. Durable Superamphiphobic and Photocatalytic Fabrics: Tackling the Loss of Super-Non-Wettability Due to Surface Organic Contamination. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35327-35332. [PMID: 31424912 DOI: 10.1021/acsami.9b12141] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Superamphiphobic surfaces are self-cleaning against various liquids and dirt particles but they are not resistant to trace organic contaminants, the accumulation of which on surface would cause a decline in the liquid repellency. In this work, superamphiphobic and photocatalytic fabrics are developed that allow the elimination of various organic substances from surface by using photocatalytic decomposition. The fabrics have a contact angle of 163, 156, and 158° to water, hexadecane, and sunflower oil, respectively. They are also demonstrated to be able to decompose methylene blue, oleic acid and sodium dodecyl sulfate (SDS) under UV light. The removal of human body grease or laundry detergent from surface to recover the super-non-wettability was demonstrated through the natural sunlight exposure. The slight damage on superamphiphobicity caused by the photocatalytic activity can be cured with simple heat treatment. In addition, the superamphiphobic fabrics show excellent durability against abrasion and repeated washing. The photocatalytic and heat-curing strategy reported here may bring superamphiphobic fabrics one step closer to practical application in various fields.
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Affiliation(s)
- Wenjian Wang
- College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China
| | - Riping Liu
- College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China
| | - Huanjie Chi
- College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China
| | - Tao Zhang
- College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China
| | - Zhiguang Xu
- China-Australia Institute for Advanced Materials and Manufacturing & College of Biological, Chemical Sciences and Engineering , Jiaxing University , Jiaxing 314001 , China
| | - Yan Zhao
- College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China
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22
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Hybrid Nanosecond Laser Processing and Heat Treatment for Rapid Preparation of Super-Hydrophobic Copper Surface. METALS 2019. [DOI: 10.3390/met9060668] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The super-hydrophobic copper surface was obtained by using a nanosecond pulsed laser. Different micro- and nano-structures were fabricated by changing the laser scanning interval and scanning speed, before heating in an electric heater at 150 °C for two hours to explore the effect of laser parameters and heat treatment on the wettability of the copper surface. It was found that the laser-treated copper surface is super-hydrophilic, and then, after the heat treatment, the surface switches to hydrophobic or even super-hydrophobic. The best super-hydrophobic surface’s apparent contact angle (APCA) was 155.6°, and the water sliding angle (WSA) was 4°. Super-hydrophobic copper is corrosion-resistant, self-cleaning, and dust-proof, and can be widely used in various mechanical devices.
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23
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Rishi AM, Kandlikar SG, Gupta A. Repetitive Pool Boiling Runs: A Controlled Process to Form Reduced Graphene Oxide Surfaces from Graphene Oxide with Tunable Surface Chemistry and Morphology. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b06062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aniket M. Rishi
- Microsystems Engineering, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, New York 14623, United States
| | - Satish G. Kandlikar
- Microsystems Engineering, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, New York 14623, United States
- Mechanical Engineering, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, New York 14623, United States
| | - Anju Gupta
- Microsystems Engineering, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, New York 14623, United States
- Chemical Engineering, Rochester Institute of Technology, 160 Lomb Memorial Drive, Rochester, New York 14623, United States
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24
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Huang Z, Gurney RS, Wang Y, Han W, Wang T, Liu D. TDI/TiO 2 Hybrid Networks for Superhydrophobic Coatings with Superior UV Durability and Cation Adsorption Functionality. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7488-7497. [PMID: 30681835 DOI: 10.1021/acsami.9b00886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Durability under UV illumination remains a big challenge of TiO2-based superhydrophobic coatings, with the photocatalytic effect causing degradation of low-surface-energy material over time, resulting in the surfaces losing their hydrophobicity. We report surfaces made from tolylene-2,4-diisocyanate (TDI)/TiO2 hybrid networks that demonstrate superhydrophobicity and superior UV durability. Structural and morphological studies reveal that the TDI/TiO2 hybrid networks are composed of TiO2 nanoparticles interconnected with TDI bridges and then encapsulated by a TDI layer. Through controlling the fraction of TDI in the synthesis process, the thickness of the TDI encapsulation layer around the TDI/TiO2 hybrid networks can be varied. When the weight ratio of TDI/TiO2 is 5:1, the superhydrophobicity of the hybrid network surface remains almost unchanged after a month of continuous UV illumination. This hybrid network surface can also clean methylene blue solution through the synergistic effects of cation adsorption and photocatalysis, holding promising potential for applications toward reducing cation pollutions in both liquid and air environments.
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Affiliation(s)
- Zhiwei Huang
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Robert S Gurney
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Yalun Wang
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Wenjiao Han
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Tao Wang
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Dan Liu
- School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
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25
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Wang Y, Huang Z, Gurney RS, Liu D. Superhydrophobic and photocatalytic PDMS/TiO2 coatings with environmental stability and multifunctionality. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.054] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Saxena N, Paria S. Fractal pattern mediated superhydrophobic glass and metallic surfaces using PTFE particles: a generalized simple approach. NEW J CHEM 2019. [DOI: 10.1039/c9nj00620f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Superhydrophobic surfaces are practically important for several real-life applications such as self-cleaning, anti-corrosion and drag reducing surfaces, non-wetting cloths, oil–water separation, water-repellent surfaces and microfluidic devices, etc.
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Affiliation(s)
- Nainsi Saxena
- Interfaces and Nanomaterials Laboratory
- Department of Chemical Engineering
- National Institute of Technology
- Rourkela 769008
- India
| | - Santanu Paria
- Interfaces and Nanomaterials Laboratory
- Department of Chemical Engineering
- National Institute of Technology
- Rourkela 769008
- India
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27
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Wang X, Lu Y, Carmalt CJ, Parkin IP, Zhang X. Multifunctional Porous and Magnetic Silicone with High Elasticity, Durability, and Oil-Water Separation Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13305-13311. [PMID: 30347162 DOI: 10.1021/acs.langmuir.8b02899] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Frequent oil spills and industrial emissions of organic solvents cause serious environmental problems. Therefore, finding a high-performance absorbent material is necessary but also challenging. Here we present a very simple method to fabricate a magnetic porous silicone that exhibits excellent absorbency, fast magnetic responsiveness, high elasticity, stretchability, and high chemical stability. The porous silicone instantly adsorbs any oil floating on water in a complex environment under magnetic field driving, without human operation, and can also separate the oil/water mixture automatically and quickly at high efficiency using an external pump. The oil absorption capacity and mechanical properties, such as compressibility and stretchability, were robust even under corrosive conditions or UV exposure. The robust, reusable magnetic porous silicone is a promising candidate for the large-scale industrial separation of organic solvents/water mixtures in harsh conditions.
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Affiliation(s)
- Xiaoyang Wang
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials , Henan University , Kaifeng 475004 , PR China
| | - Yao Lu
- Department of Mechanical Engineering , University College London , Torrington Place , London WC1E 7JE , U.K
| | - Claire J Carmalt
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , U.K
| | - Ivan P Parkin
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , U.K
| | - Xia Zhang
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials , Henan University , Kaifeng 475004 , PR China
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28
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Wu B, Peng C, Hu Y, Xing S, Jiang D, Yang J, Lyu J, He Y. Molding processed multi-layered and multi-functional nanocomposites with high structural ability, electrical conductivity and durable superhydrophobicity. NANOSCALE 2018; 10:19916-19926. [PMID: 30346018 DOI: 10.1039/c8nr04317e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bioinspired superhydrophobic surfaces are mainly attributed to nano/micro textures and low surface energy materials, and have exciting potential for use in fields such as self-cleaning, water-proofing, anti-icing, anti-fouling, and so forth. However, the natural weakness of such delicate hierarchical surface structures pose great challenges to using artificial superhydrophobic surfaces under harsh mechanical conditions. Completely transforming multi-layered composite materials with good structural ability into superhydrophobic surfaces would greatly extend their durability under continuous mechanical abrasion. Endowing these composites with electrical conductivity could further expand their scope of application, especially in anti-static environments. Here we employ a facile molding process to fabricate a new type of multi-layered and multi-functional nanocomposite (MMNC), with a tensile strength up to ∼226.4 MPa, a modulus of up to ∼24.8 GPa, a surface electric conductivity of ∼1.2 S cm-1, a water contact angle of ∼155.4° and a water sliding angle of ∼2.0°. These multi-layered and multi-functional nanocomposites (MMNCs) demonstrate robust water-repellency under harsh mechanical abrasion (tested using a high tack sticky tape peel, cyclic sand paper abrasion and even file abrasion) and strong chemical corrosion (tested by using hydrochloric acid, sulfuric acid and sodium hydroxide solutions). Additionally, our MMNCs are highly resistant to water impalement (tested by turbulent water jet impact with a velocity of up to ∼29.5 m s-1 and a corresponding Weber number of ∼32 000). The robustness of the superhydrophobicity is multifaceted, and owing to the excellent structural performance and conductivity, these MMNCs could find potential uses in vehicles, containers, wind blades, infrastructures, electronics and so forth, which usually experience comprehensively harsh conditions such as rainfall, abrasion, static electricity, high loads and so forth.
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Affiliation(s)
- Binrui Wu
- Department of Materials Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, P. R. China.
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29
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Scalable superhydrophobic coating with controllable wettability and investigations of its drag reduction. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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30
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Navarro-Baena I, Jacobo-Martín A, Hernández JJ, Castro Smirnov JR, Viela F, Monclús MA, Osorio MR, Molina-Aldareguia JM, Rodríguez I. Single-imprint moth-eye anti-reflective and self-cleaning film with enhanced resistance. NANOSCALE 2018; 10:15496-15504. [PMID: 29855639 DOI: 10.1039/c8nr02386g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Antireflective transparent materials are essential for a myriad of applications to allow for clear vision and efficient light transmission. Despite the advances, efficient and low cost solutions to clean antireflective surfaces have remained elusive. Here, we present a practical approach that enables the production of antireflective polymer surfaces based on moth-eye inspired features incorporating photoinduced self-cleaning properties and enhanced mechanical resistance. The methodology involves the fabrication of sub-wavelength moth-eye nanofeatures onto transparent surface composite films in a combined processing step of nanoparticle coating and surface nanoimprinting. The resulting surfaces reduced the optical reflection losses from values of 9% of typical PMMA plastic films to an optimum value of 0.6% in the case of double-sided moth-eye nanoimprinted films. The composite moth-eye topography also showed an improved stiffness and scratch resistance. This technology represents a significant advancement not limited by scale, for the development of antireflective films for low cost application products.
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Affiliation(s)
- Iván Navarro-Baena
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanoscience), C/Faraday 9, Ciudad Universitaria de Cantoblanco. 28049 Madrid, Spain.
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31
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Almasian A, Chizari Fard G, Mirjalili M, Parvinzadeh Gashti M. Fluorinated-PAN nanofibers: Preparation, optimization, characterization and fog harvesting property. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.12.052] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Huang Z, Gurney RS, Wang T, Liu D. Environmentally durable superhydrophobic surfaces with robust photocatalytic self-cleaning and self-healing properties prepared via versatile film deposition methods. J Colloid Interface Sci 2018; 527:107-116. [PMID: 29787946 DOI: 10.1016/j.jcis.2018.05.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/28/2018] [Accepted: 05/03/2018] [Indexed: 10/17/2022]
Abstract
Superhydrophobic (SH) surfaces with self-cleaning photocatalytic properties have become an important research focus in recent years. In this work, we fabricated multifunctional and environmentally durable SH surfaces via a facile one-step reaction of octadecyl isocyanate (ODI) with TiO2 particles. The resulting films possess SH properties, facilitated by a combination of hydrophobic long alkyl chains and the hierarchical crystalline structure. Films can be prepared via spray or blade coating on a variety of hard and soft substrates, and function well when exposed to either air or oil. The coating retains its SH properties for at least 6 months in ambient conditions, and after organic pollution it can recover its SH properties using UV or sun light illumination. After water impalement, the SH properties can self-heal via the self-assembly of long alkyl chains to their original state within several hours at ambient conditions, or within minutes on a heating stage. The covalent bonds between alkyl chains and TiO2, together with hydrogen bonds between adjacent alkyl chains, greatly increased the surface durability of the SH films. This multifunctional SH coating is a very promising material for commercial and industrial coating applications.
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Affiliation(s)
- Zhiwei Huang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Robert S Gurney
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Tao Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Dan Liu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China.
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33
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Jackson R, Patrick PS, Page K, Powell MJ, Lythgoe MF, Miodownik MA, Parkin IP, Carmalt CJ, Kalber TL, Bear JC. Chemically Treated 3D Printed Polymer Scaffolds for Biomineral Formation. ACS OMEGA 2018; 3:4342-4351. [PMID: 29732454 PMCID: PMC5928486 DOI: 10.1021/acsomega.8b00219] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
We present the synthesis of nylon-12 scaffolds by 3D printing and demonstrate their versatility as matrices for cell growth, differentiation, and biomineral formation. We demonstrate that the porous nature of the printed parts makes them ideal for the direct incorporation of preformed nanomaterials or material precursors, leading to nanocomposites with very different properties and environments for cell growth. Additives such as those derived from sources such as tetraethyl orthosilicate applied at a low temperature promote successful cell growth, due partly to the high surface area of the porous matrix. The incorporation of presynthesized iron oxide nanoparticles led to a material that showed rapid heating in response to an applied ac magnetic field, an excellent property for use in gene expression and, with further improvement, chemical-free sterilization. These methods also avoid changing polymer feedstocks and contaminating or even damaging commonly used selective laser sintering printers. The chemically treated 3D printed matrices presented herein have great potential for use in addressing current issues surrounding bone grafting, implants, and skeletal repair, and a wide variety of possible incorporated material combinations could impact many other areas.
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Affiliation(s)
- Richard
J. Jackson
- UCL
Healthcare Biomagnetics Laboratory, The
Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, U.K.
| | - P. Stephen Patrick
- Centre
for Advanced Biomedical Imaging (CABI), Department of Medicine and
Institute of Child Health, University College
London, London WC1E 6DD, U.K.
| | - Kristopher Page
- Materials
Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Michael J. Powell
- Materials
Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Mark F. Lythgoe
- Centre
for Advanced Biomedical Imaging (CABI), Department of Medicine and
Institute of Child Health, University College
London, London WC1E 6DD, U.K.
| | - Mark A. Miodownik
- Department
of Mechanical Engineering, University College
London, London WC1E 7JE, U.K.
| | - Ivan P. Parkin
- Materials
Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Claire J. Carmalt
- Materials
Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Tammy L. Kalber
- Centre
for Advanced Biomedical Imaging (CABI), Department of Medicine and
Institute of Child Health, University College
London, London WC1E 6DD, U.K.
| | - Joseph C. Bear
- School
of Life Science, Pharmacy & Chemistry, Kingston University London, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, U.K.
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34
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Xu L, Zhang X, Shen Y, Ding Y, Wang L, Sheng Y. Durable Superhydrophobic Cotton Textiles with Ultraviolet-blocking Property and Photocatalysis Based on Flower-Like Copper Sulfide. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00254] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Lihui Xu
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
| | - Xuanyu Zhang
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
| | - Yong Shen
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
| | - Ying Ding
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
| | - Liming Wang
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
| | - Yu Sheng
- College of Fashion and Textiles, Shanghai University of Engineering Science, Shanghai 201620, People’s Republic of China
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35
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Zhuang A, Liao R, Lu Y, Dixon SC, Jiamprasertboon A, Chen F, Sathasivam S, Parkin IP, Carmalt CJ. Transforming a Simple Commercial Glue into Highly Robust Superhydrophobic Surfaces via Aerosol-Assisted Chemical Vapor Deposition. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42327-42335. [PMID: 29116744 DOI: 10.1021/acsami.7b13182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Robust superhydrophobic surfaces were synthesized as composites of the widely commercially available adhesives epoxy resin (EP) and polydimethylsiloxane (PDMS). The EP layer provided a strongly adhered micro/nanoscale structure on the substrates, while the PDMS was used as a post-treatment to lower the surface energy. In this study, the depositions of EP films were taken at a range of temperatures, deposition times, and substrates via aerosol-assisted chemical vapor deposition (AACVD). A novel dynamic deposition temperature approach was developed to create multiple-layered periodic micro/nanostructures that significantly improved the surface mechanical durability. Water droplet contact angles (CA) of 160° were observed with droplet sliding angles (SA) frequently <1°. A rigorous sandpaper abrasion test demonstrated retention of superhydrophobic properties and superior robustness therein, while wear, anticorrosion (pH = 1-14, 72 h), and UV testing (365 nm, 3.7 mW/cm2, 120 h) were carried out to exhibit the environmental stability of the films. Self-cleaning behavior was demonstrated in clearing the surfaces of various contaminating powders and aqueous dyes. This facile and flexible method for fabricating highly durable superhydrophobic polymer films points to a promising future for AACVD in their scalable and low-cost production.
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Affiliation(s)
- Aoyun Zhuang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University , Chongqing 400044, China
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
| | - Ruijin Liao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University , Chongqing 400044, China
| | - Yao Lu
- Nanoengineered Systems Laboratory, UCL Mechanical Engineering, University College London , London WC1E 7JE, United Kingdom
| | - Sebastian C Dixon
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
| | - Arreerat Jiamprasertboon
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
- School of Chemistry, Institute of Science, Suranaree University of Technology , 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand
| | - Faze Chen
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
| | - Sanjayan Sathasivam
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
| | - Ivan P Parkin
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
| | - Claire J Carmalt
- Department of Chemistry, University College London , London WC1H 0AJ, United Kingdom
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36
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Zhan Y, Ruan M, Li W, Li H, Hu L, Ma F, Yu Z, Feng W. Fabrication of anisotropic PTFE superhydrophobic surfaces using laser microprocessing and their self-cleaning and anti-icing behavior. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.09.018] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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England MW, Sato T, Urata C, Wang L, Hozumi A. Transparent gel composite films with multiple functionalities: Long-lasting anti-fogging, underwater superoleophobicity and anti-bacterial activity. J Colloid Interface Sci 2017. [DOI: 10.1016/j.jcis.2017.06.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Fabrication of Al₂O₃ Nano-Structure Functional Film on a Cellulose Insulation Polymer Surface and Its Space Charge Suppression Effect. Polymers (Basel) 2017; 9:polym9100502. [PMID: 30965806 PMCID: PMC6418817 DOI: 10.3390/polym9100502] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/05/2017] [Accepted: 10/07/2017] [Indexed: 12/02/2022] Open
Abstract
Cellulose insulation polymer (paper/pressboard) has been widely used in high voltage direct current (HVDC) transformers. One of the most challenging issues in the insulation material used for HVDC equipment is the space charge accumulation. Effective ways to suppress the space charge injection/accumulation in insulation material is currently a popular research topic. In this study, an aluminium oxide functional film was deposited on a cellulose insulation pressboard surface using reactive radio frequency (RF) magnetron sputtering. The sputtered thin film was characterized by the scanning electron microscopy/energy dispersive spectrometer (SEM/EDS), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The influence of the deposited functional film on the dielectric properties and the space charge injection/accumulation behaviour was investigated. A preliminary exploration of the space charge suppression effect is discussed. SEM/EDS, XPS, and XRD results show that the nano-structured Al2O3 film with amorphous phase was successfully fabricated onto the fibre surface. The cellulose insulation pressboard surface sputtered by Al2O3 film has lower permittivity, conductivity, and dissipation factor values in the lower frequency (<103 Hz) region. The oil-impregnated sputtered pressboard presents an apparent space-charge suppression effect. Compared with the pressboard sputtered with Al2O3 film for 90 min, the pressboard sputtered with Al2O3 film for 60 min had a better space charge suppression effect. Ultra-small Al2O3 particles (<10 nm) grew on the surface of the larger nanoparticles. The nano-structured Al2O3 film sputtered on the fibre surface could act as a functional barrier layer for suppression of the charge injection and accumulation. This study offers a new perspective in favour of the application of insulation pressboard with a nano-structured function surface against space charge injection/accumulation in HVDC equipment.
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39
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McNaughter PD, Bear JC, Mayes AG, Parkin IP, O'Brien P. The in situ synthesis of PbS nanocrystals from lead(II) n-octylxanthate within a 1,3-diisopropenylbenzene-bisphenol A dimethacrylate sulfur copolymer. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170383. [PMID: 28878986 PMCID: PMC5579102 DOI: 10.1098/rsos.170383] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/18/2017] [Indexed: 05/28/2023]
Abstract
The synthesis of lead sulfide nanocrystals within a solution processable sulfur 'inverse vulcanization' polymer thin film matrix was achieved from the in situ thermal decomposition of lead(II) n-octylxanthate, [Pb(S2COOct)2]. The growth of nanocrystals within polymer thin films from single-source precursors offers a faster route to networks of nanocrystals within polymers when compared with ex situ routes. The 'inverse vulcanization' sulfur polymer described herein contains a hybrid linker system which demonstrates high solubility in organic solvents, allowing solution processing of the sulfur-based polymer, ideal for the formation of thin films. The process of nanocrystal synthesis within sulfur films was optimized by observing nanocrystal formation by X-ray photoelectron spectroscopy and X-ray diffraction. Examination of the film morphology by scanning electron microscopy showed that beyond a certain precursor concentration the nanocrystals formed were not only within the film but also on the surface suggesting a loading limit within the polymer. We envisage this material could be used as the basis of a new generation of materials where solution processed sulfur polymers act as an alternative to traditional polymers.
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Affiliation(s)
- P. D. McNaughter
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - J. C. Bear
- Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - A. G. Mayes
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - I. P. Parkin
- Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - P. O'Brien
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
- School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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40
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Al-Shatty W, Lord AM, Alexander S, Barron AR. Tunable Surface Properties of Aluminum Oxide Nanoparticles from Highly Hydrophobic to Highly Hydrophilic. ACS OMEGA 2017; 2:2507-2514. [PMID: 31457596 PMCID: PMC6641041 DOI: 10.1021/acsomega.7b00279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
The formation of materials with tunable wettability is important for applications ranging from antifouling to waterproofing surfaces. We report the use of various low-cost and nonhazardous hydrocarbon materials to tune the surface properties of aluminum oxide nanoparticles (NPs) from superhydrophilic to superhydrophobic through covalent functionalization. The hydrocarbon surfaces are compared with a fluorinated surface for wettability and surface energy properties. The role of NPs' hydrophobicity on their dynamic interfacial behavior at the oil-water interface and their ability to form stable emulsions is also explored. The spray-coated NPs provide textured surfaces (regardless of functionality), with water contact angles (θ) of 10-150° based on their surface functionality. The superhydrophobic NPs are able to reduce the interfacial tension of various oil-water interfaces by behaving as surfactants.
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Affiliation(s)
- Wafaa Al-Shatty
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Alex M. Lord
- Centre
for Nanohealth (CNH), College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP Wales, U.K.
| | - Shirin Alexander
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Andrew R. Barron
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
- Department
of Chemistry, Rice University, 6100 S Main Street, Houston, 77005 Texas, United States
- Department
of Materials Science and Nanoengineering, Rice University, 6100
Main MS-325, Houston, 77005 Texas, United States
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41
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Wen G, Guo Z, Liu W. Biomimetic polymeric superhydrophobic surfaces and nanostructures: from fabrication to applications. NANOSCALE 2017; 9:3338-3366. [PMID: 28244533 DOI: 10.1039/c7nr00096k] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Numerous research studies have contributed to the development of mature superhydrophobic systems. The fabrication and applications of polymeric superhydrophobic surfaces have been discussed and these have attracted tremendous attention over the past few years due to their excellent properties. In general, roughness and chemical composition, the two most crucial factors with respect to surface wetting, provide the basic criteria for yielding polymeric superhydrophobic materials. Furthermore, with their unique properties and flexible configurations, polymers have been one of the most efficient materials for fabricating superhydrophobic materials. This review aims to summarize the most recent progress in polymeric superhydrophobic surfaces. Significantly, the fundamental theories for designing these materials will be presented, and the original methods will be introduced, followed by a summary of multifunctional superhydrophobic polymers and their applications. The principles of these methods can be divided into two categories: the first involves adding nanoparticles to a low surface energy polymer, and the other involves combining a low surface energy material with a textured surface, followed by chemical modification. Notably, surface-initiated radical polymerization is a versatile method for a variety of vinyl monomers, resulting in controlled molecular weights and low polydispersities. The surfaces produced by these methods not only possess superhydrophobicity but also have many applications, such as self-cleaning, self-healing, anti-icing, anti-bioadhesion, oil-water separation, and even superamphiphobic surfaces. Interestingly, the combination of responsive materials and roughness enhances the responsiveness, which allows the achievement of intelligent transformation between superhydrophobicity and superhydrophilicity. Nevertheless, surfaces with poor physical and chemical properties are generally unable to withstand the severe conditions of the outside world; thus, it is necessary to optimize the performances of such materials to yield durable superhydrophobic surfaces. To sum up, some challenges and perspectives regarding the future research and development of polymeric superhydrophobic surfaces are presented.
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Affiliation(s)
- Gang Wen
- 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.
| | - Weimin Liu
- 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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42
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A facile method for preparation superhydrophobic paper with enhanced physical strength and moisture-proofing property. Carbohydr Polym 2017; 160:9-17. [DOI: 10.1016/j.carbpol.2016.12.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/26/2016] [Accepted: 12/07/2016] [Indexed: 11/20/2022]
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43
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Zhuang A, Liao R, Dixon SC, Lu Y, Sathasivam S, Parkin IP, Carmalt CJ. Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition. RSC Adv 2017. [DOI: 10.1039/c7ra04116k] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hierarchical micro/nano-structured transparent superhydrophobic polytetrafluoroethylene films with water contact angle 168°, water sliding angle <1° and visible transmittance >90% were prepared on glass via aerosol-assisted chemical vapor deposition.
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Affiliation(s)
- Aoyun Zhuang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology
- Chongqing University
- Chongqing 400044
- China
- Department of Chemistry
| | - Ruijin Liao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology
- Chongqing University
- Chongqing 400044
- China
| | | | - Yao Lu
- Department of Chemistry
- University College London
- London
- UK
| | | | - Ivan P. Parkin
- Department of Chemistry
- University College London
- London
- UK
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44
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Anderson AL, Binions R. A preferential precursor for photocatalytically active titanium dioxide thin films: Titanium bis-ammonium lactato dihydroxide as an alternative to titanium tetra iso-propoxide. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Crick CR, Noimark S, Peveler WJ, Bear JC, Ivanov AP, Edel JB, Parkin IP. Advanced Compositional Analysis of Nanoparticle-polymer Composites Using Direct Fluorescence Imaging. J Vis Exp 2016. [PMID: 27500449 DOI: 10.3791/54178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The fabrication of polymer-nanoparticle composites is extremely important in the development of many functional materials. Identifying the precise composition of these materials is essential, especially in the design of surface catalysts, where the surface concentration of the active component determines the activity of the material. Antimicrobial materials which utilize nanoparticles are a particular focus of this technology. Recently swell encapsulation has emerged as a technique for inserting antimicrobial nanoparticles into a host polymer matrix. Swell encapsulation provides the advantage of localizing the incorporation to the external surfaces of materials, which act as the active sites of these materials. However, quantification of this nanoparticle uptake is challenging. Previous studies explore the link between antimicrobial activity and surface concentration of the active component, but this is not directly visualized. Here we show a reliable method to monitor the incorporation of nanoparticles into a polymer host matrix via swell encapsulation. We show that the surface concentration of CdSe/ZnS nanoparticles can be accurately visualized through cross-sectional fluorescence imaging. Using this method, we can quantify the uptake of nanoparticles via swell encapsulation and measure the surface concentration of encapsulated particles, which is key in optimizing the activity of functional materials.
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Affiliation(s)
| | - Sacha Noimark
- Department of Medical Physics and Biomedical Engineering, University College London; Department of Chemistry, University College London
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46
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Gao J, Uribe-Romo FJ, Saathoff JD, Arslan H, Crick CR, Hein SJ, Itin B, Clancy P, Dichtel WR, Loo YL. Ambipolar Transport in Solution-Synthesized Graphene Nanoribbons. ACS NANO 2016; 10:4847-4856. [PMID: 27046054 DOI: 10.1021/acsnano.6b00643] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Graphene nanoribbons (GNRs) with robust electronic band gaps are promising candidate materials for nanometer-scale electronic circuits. Realizing their full potential, however, will depend on the ability to access GNRs with prescribed widths and edge structures and an understanding of their fundamental electronic properties. We report field-effect devices exhibiting ambipolar transport in accumulation mode composed of solution-synthesized GNRs with straight armchair edges. Temperature-dependent electrical measurements specify thermally activated charge transport, which we attribute to inter-ribbon hopping. With access to structurally precise materials in practical quantities and by overcoming processing difficulties in making electrical contacts to these materials, we have demonstrated critical steps toward nanoelectric devices based on solution-synthesized GNRs.
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Affiliation(s)
- Jia Gao
- Department of Chemical and Biological Engineering, Princeton University , Princeton, New Jersey 08544, United States
| | | | | | | | | | | | - Boris Itin
- The New York Structural Biology Center , 89 Convent Avenue, New York, New York 10027, United States
| | | | | | - Yueh-Lin Loo
- Department of Chemical and Biological Engineering, Princeton University , Princeton, New Jersey 08544, United States
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47
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Kim BR, Kim DH, Kim YD. Superhydrophobic, flexible and gas-permeable membrane prepared by a simple one-step vapor deposition. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0017-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Alexander S, Eastoe J, Lord AM, Guittard F, Barron AR. Branched Hydrocarbon Low Surface Energy Materials for Superhydrophobic Nanoparticle Derived Surfaces. ACS APPLIED MATERIALS & INTERFACES 2016; 8:660-666. [PMID: 26641156 DOI: 10.1021/acsami.5b09784] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a new class of superhydrophobic surfaces created from low-cost and easily synthesized aluminum oxide nanoparticles functionalized carboxylic acids having highly branched hydrocarbon (HC) chains. These branched chains are new low surface energy materials (LSEMs) which can replace environmentally hazardous and expensive fluorocarbons (FCs). Regardless of coating method and curing temperature, the resulting textured surfaces develop water contact angles (θ) of ∼155° and root-mean-square roughnesses (Rq) ≈ 85 nm, being comparable with equivalent FC functionalized surfaces (θ = 157° and Rq = 100 nm). The functionalized nanoparticles may be coated onto a variety of substrates to generate different superhydrophobic materials.
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Affiliation(s)
- Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Alex M Lord
- Centre for Nanohealth (CNH), College of Engineering, Swansea University , Singleton Park, SA2 8PP Wales, United Kingdom
| | - Frédéric Guittard
- Group Surfaces & Interfaces, University of Nice Sophia Antipolis and CNRS, LPMC , Parc Valrose, 06100 Nice, France
| | - Andrew R Barron
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
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49
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Wang H, Zhang X, Liu Z, Zhu Y, Wu S, Zhu Y. A superrobust superhydrophobic PSU composite coating with self-cleaning properties, wear resistance and corrosion resistance. RSC Adv 2016. [DOI: 10.1039/c5ra22396b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, a superhydrophobic polysulfone (PSU) composite coating with a high water contact angle (WCA) of 159° and a low slide angle (SA) of only 3.5° has been fabricated through a simple thermal spraying method.
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Affiliation(s)
- Huaiyuan Wang
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
| | - Xiguang Zhang
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
| | - Zhanjian Liu
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
| | - Yixing Zhu
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
| | - Shiqi Wu
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
| | - Yanji Zhu
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China 163318
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50
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Wee LH, Meledina M, Turner S, Custers K, Kerkhofs S, Sree SP, Gobechiya E, Kirschhock CEA, Van Tendeloo G, Martens JA. Anatase TiO2 nanoparticle coating on porous COK-12 platelets as highly active and reusable photocatalysts. RSC Adv 2016. [DOI: 10.1039/c6ra06141a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Coating of anatase TiO2 nanoparticles on ordered mesoporous silica COK-12 platelets for effective photodegradation of various organic pollutants under UV light irradiation.
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Affiliation(s)
- L. H. Wee
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| | - M. Meledina
- Electron Microscopy for Materials Science
- University of Antwerp
- Antwerp
- Belgium
| | - S. Turner
- Electron Microscopy for Materials Science
- University of Antwerp
- Antwerp
- Belgium
| | - K. Custers
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| | - S. Kerkhofs
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| | - S. P. Sree
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| | - E. Gobechiya
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| | | | - G. Van Tendeloo
- Electron Microscopy for Materials Science
- University of Antwerp
- Antwerp
- Belgium
| | - J. A. Martens
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- Leuven
- Belgium
| |
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