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Li Y, Zhang J, Wang A. Durable Superhydrophobic Coatings with Attapulgite for Inhibiting 5G Radome Rain Attenuation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:22446-22454. [PMID: 39387216 DOI: 10.1021/acs.langmuir.4c03432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2024]
Abstract
5G radomes are easily wetted and stained by rainfall, which greatly reduces the quality of signal transmission. Superhydrophobic coatings are expected to solve this problem because of their unique wettability, but it is still challenging to develop robust superhydrophobic coatings via simple methods. Here, we report the design of robust superhydrophobic coatings containing oxalic acid-modified attapulgite (MDP) for inhibiting rain attenuation of 5G radomes. First, a homogeneous suspension was prepared by nonsolvent-induced phase separation of a silicone-modified polyester adhesive (SMPA) solution containing fluorinated MDP (F-MDP) nanorods. Superhydrophobic coatings can be easily prepared by spraying the suspension. The effects of phase separation and the SMPA/F-MDP ratio on the surface morphology, superhydrophobicity, and stability of the coatings were systematically investigated. The micro-/nanostructure and low surface energy endow the coatings with excellent static and dynamic superhydrophobicity. Compared with previous studies, the coatings exhibit excellent mechanical stability, flexibility, chemical stability, and pressure resistance due to the combined effects of adhesion by SMPA, self-similar micro-/nanostructures, reinforcement by the MDP nanorods, etc. Consequently, the coatings show good performance in preventing rain attenuation of 5G radomes, an emerging application of Superhydrophobic coatings. We believe that the coatings have great application potential in various fields, including 5G communication.
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Affiliation(s)
- Yan Li
- Research Center of Resource Chemistry and Energy Materials, Key Laboratory of Clay Minerals of Gansu, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P.R. China
| | - Junping Zhang
- Research Center of Resource Chemistry and Energy Materials, Key Laboratory of Clay Minerals of Gansu, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Aiqin Wang
- Research Center of Resource Chemistry and Energy Materials, Key Laboratory of Clay Minerals of Gansu, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
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Guo Q, Ma J, Yin T, Jin H, Zheng J, Gao H. Superhydrophobic Non-Metallic Surfaces with Multiscale Nano/Micro-Structure: Fabrication and Application. Molecules 2024; 29:2098. [PMID: 38731589 PMCID: PMC11085871 DOI: 10.3390/molecules29092098] [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: 02/08/2024] [Revised: 04/19/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Multiscale nano/micro-structured surfaces with superhydrophobicity are abundantly observed in nature such as lotus leaves, rose petals and butterfly wings, where microstructures typically reinforce mechanical stability, while nanostructures predominantly govern wettability. To emulate such hierarchical structures in nature, various methods have been widely applied in the past few decades to the manufacture of multiscale structures which can be applied to functionalities ranging from anti-icing and water-oil separation to self-cleaning. In this review, we highlight recent advances in nano/micro-structured superhydrophobic surfaces, with particular focus on non-metallic materials as they are widely used in daily life due to their lightweight, abrasion resistance and ease of processing properties. This review is organized into three sections. First, fabrication methods of multiscale hierarchical structures are introduced with their strengths and weaknesses. Second, four main application areas of anti-icing, water-oil separation, anti-fog and self-cleaning are overviewed by assessing how and why multiscale structures need to be incorporated to carry out their performances. Finally, future directions and challenges for nano/micro-structured surfaces are presented.
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Affiliation(s)
- Qi Guo
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
| | - Jieyin Ma
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
| | - Tianjun Yin
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
| | - Haichuan Jin
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
| | - Jiaxiang Zheng
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
| | - Hui Gao
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China; (Q.G.); (J.M.); (T.Y.); (H.J.); (J.Z.)
- Ningbo Institute of Technology, Beihang University, Ningbo 315100, China
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Li Y, Yang B, Wei J, Li B, Mao M, Zhang J. Attapulgite-Based Stable Superhydrophobic Coatings for Preventing Rain Attenuation of 5G Radomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7760-7768. [PMID: 38546182 DOI: 10.1021/acs.langmuir.4c00492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Superhydrophobic coatings hold immense promise for various applications. However, their practical use is currently hindered by issues such as poor stability, high costs, and complex preparation processes. Here, we present the preparation of cost-effective and stable superhydrophobic coatings through fluorination of natural attapulgite (F-ATP) nanorods and subsequent solvent-induced phase separation of a silicone-modified polyester adhesive (SMPA) with the F-ATP nanorods dispersed in it. Phase separation of the F-ATP/SMPA system forms a uniform suspension of microaggregates, which can be easily utilized for preparing superhydrophobic coatings via spray coating. The coatings have a low-surface-energy hierarchical micro/nanostructure due to phase separation of SMPA and adhesion of F-ATP to it. Moreover, the effects of the solvent composition (i.e., phase separation degree of SMPA) and the SMPA/F-ATP mass ratio on the morphology, superhydrophobicity, and stability of the coatings were investigated. After systematic optimization, the coatings exhibit excellent static and dynamic superhydrophobicity as well as high mechanical, chemical, thermal, and UV aging stability. Finally, the coatings were applied to the 5G radome surface and showed good rain attenuation prevention performance. Thus, we are confident that the superhydrophobic coatings have great application potential due to their advantages of outstanding performance, straightforward preparation procedures, cost-effectiveness, etc.
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Affiliation(s)
- Yan Li
- Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Baoping Yang
- Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
| | - Jinfei Wei
- Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Bucheng Li
- Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Mingyuan Mao
- Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Junping Zhang
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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Li Q, Zhu Y, Li Y, Yang J, Bao Z, Tian S, Wang X, Zhang L. Reusable Zwitterionic Porous Organic Polymers for Bilirubin Removal in Serum. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 38048490 DOI: 10.1021/acsami.3c11824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Herein, we report a straightforward strategy to construct reusable, hemocompatible, and highly efficient bilirubin adsorbents by installing zwitterionic modules into a porous organic polymer (POP) for hemoperfusion application. Three types of zwitterions with different amounts are used to evaluate their impacts on the characteristics of POPs, including carboxybetaine methacrylate (CB), sulfobetaine methacrylate (SB), and 2-methacryloyloxyethyl phosphorylcholine (MPC). Results show that zwitterions can improve hemocompatibility, hydrophilicity, and bilirubin uptake of the POP. Among all zwitterionic POPs, POP-CB-40% exhibits the best bilirubin uptake, ∼46.5 times enhancement compared with the non-zwitterionic POP in 100% serum. This enhancement can be attributed to the improved hydrophilicity and protein resistance ability in biological solutions. More importantly, the reusability test shows that POP-CB-40% maintains ∼99% of bilirubin uptake capacity at fifth recycling in 100% serum. Findings in this work provide a guideline for the design of biocompatible and efficient POP-based bilirubin adsorbents for hemoperfusion therapy.
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Affiliation(s)
- Qingsi Li
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Yingnan Zhu
- School of Pharmaceutical Sciences, Institute of Drug Discovery and Development, Center for Drug Safety Evaluation and Research, Zhengzhou University, Zhengzhou 450001, China
| | - Yongjian Li
- Cardiovascular Department, Tianjin Nankai Hospital, No. 122, Sanwei Road, Nankai District, Tianjin 300102, China
| | - Jing Yang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Zhun Bao
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Shu Tian
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Xiaodong Wang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
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Yin Y, Zhao L, Lin S. CO 2-philicity to CO 2-phobicity Transition on Smooth and Stochastic Rough Cu-like Substrate Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38039439 DOI: 10.1021/acs.langmuir.3c02434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2023]
Abstract
CO2 on metal substrates is essential to CO2 liquefaction and transportation of CO2, yet the manipulation of the wettability of the CO2 and the elucidation of its underlying mechanism have not been fully achieved. Here, using molecular dynamics simulations, we report CO2 wetting characteristics on both smooth and stochastic rough Cu-like substrate surfaces. The results indicate that the apparent contact angle (CA) of the CO2 droplet on the smooth surface decreases from 180° to 0° as the CO2-solid characteristic interaction energy increases from 0.002 to 0.016 eV. In addition, the CAs become greater with increasing the density of surface asperities, regardless of the intrinsic surface wettability. This is attributed to the capillary drying-out of liquid CO2 molecules in gaps between surface asperities at the three-phase contact line of the droplet, which is usually overlooked in previous theoretical studies. Notably, the intrinsically CO2-philic surface transforms to the CO2-phobic due to an increase in the density of surface rugosity. Moreover, we verify the range of applicability of the CA prediction models concerning the nanoscale asperities. This work is beneficial for fully understanding the influence of nanoscale surface topography on CO2 wettability and shedding light on the design of functionalized and patterned surfaces to manipulate CO2 wettability.
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Affiliation(s)
- Yuming Yin
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Lingling Zhao
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Shangchao Lin
- Institute of Engineering Thermophysics, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Geng H, Lupton EJ, Ma Y, Sun R, Grigsby CL, Brachi G, Li X, Zhou K, Stuckey DJ, Stevens MM. Hybrid Polypyrrole and Polydopamine Nanosheets for Precise Raman/Photoacoustic Imaging and Photothermal Therapy. Adv Healthc Mater 2023; 12:e2301148. [PMID: 37169351 PMCID: PMC11468501 DOI: 10.1002/adhm.202301148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/08/2023] [Indexed: 05/13/2023]
Abstract
The development of near-infrared light responsive conductive polymers provides a useful theranostic platform for malignant tumors by maximizing spatial resolution with deep tissue penetration for diagnosis and photothermal therapy. Herein, the self-assembly of ultrathin 2D polypyrrole nanosheets utilizing dopamine as a capping agent and a monolayer of octadecylamine as a template is demonstrated. The 2D polypyrrole-polydopamine nanostructure has tunable size distribution which shows strong absorption in the first and second near-infrared windows, enabling photoacoustic imaging and photothermal therapy. The hybrid double-layer is demonstrated to increase Raman intensity for 3D Raman imaging (up to two orders of magnitude enhancement and spatial resolution up to 1 µm). The acidic environment drives reversible doping of polypyrrole, which can be detected by Raman spectroscopy. The combined properties of the nanosheets can substantially enhance performance in dual-mode Raman and photoacoustic guided photothermal therapy, as shown by the 69% light to heat conversion efficiency and higher cytotoxicity against cancer spheroids. These pH-responsive features highlight the potential of 2D conductive polymers for applications in accurate, highly efficient theranostics.
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Affiliation(s)
- Hongya Geng
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
- Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmStockholm 171 11Sweden
- Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Emily J. Lupton
- UCL Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Yun Ma
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
| | - Rujie Sun
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
| | - Christopher L. Grigsby
- Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmStockholm 171 11Sweden
| | - Giulia Brachi
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
| | - Xiaorui Li
- Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Kun Zhou
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
| | - Daniel J. Stuckey
- UCL Centre for Advanced Biomedical ImagingDivision of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Molly M. Stevens
- Department of MaterialsDepartment of BioengineeringInstitute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
- Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmStockholm 171 11Sweden
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Liu X, Li S, Wu Y, Guo T, Xie J, Tao J, Dong L, Ran Q. Robust All-Waterborne Superhydrophobic Coating with Photothermal Deicing and Passive Anti-icing Properties. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44305-44313. [PMID: 37698376 DOI: 10.1021/acsami.3c09150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
The compelling integration of superhydrophobic coatings with light-to-heat conversion capabilities has garnered substantial interest due to their dual functionality encompassing passive anti-icing and deicing attributes. However, the insufficient mechanical stability and the environmental and human health concerns stemming from the extensive use of organic solvents limit their practical application. In this study, an all-waterborne superhydrophobic photothermal coating (PCPAS) was prepared through the synergy of composite micro-nanoparticles derived from carbon nanotubes (CNT), polydopamine (PDA), and Ag particles with fluorine-containing polyacrylic emulsion (PFA). The PDA provided active sites for Ag+ reduction reaction and enhanced the interfacial interaction between CNT and Ag particles. The interfacial enhancement enabled the coating to maintain stable superhydrophobicity after 260 times sandpaper abrasion and 240 times tape peeling. Simultaneously, the composite micro-nanoparticle's light-to-heat conversion ability gave the coating excellent anti-icing/deicing capabilities. Under the condition of -20 °C, the freezing time of 30 μL of water droplets was extended to 392 s, and 2 × 2 × 2 cm ice cubes placed on the surface of the coating could completely melt after only 1142 s under simulated sunlight irradiation with a 1 kW/m2 intensity. In addition, the coating also had suitable self-cleaning properties and substrate applicability. The comprehensive attributes of this all-waterborne photothermal superhydrophobic coating render it a promising contender for anti-icing and deicing applications in challenging outdoor environments.
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Affiliation(s)
- Xudong Liu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Shenzhen Li
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Yuanlong Wu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Tengfei Guo
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Junhao Xie
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Jinqiu Tao
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Lei Dong
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Qianping Ran
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
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Saleh HM, Hassan AI. Synthesis and Characterization of Nanomaterials for Application in Cost-Effective Electrochemical Devices. SUSTAINABILITY 2023; 15:10891. [DOI: 10.3390/su151410891] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/10/2025]
Abstract
Nanomaterials have gained significant attention as a remarkable class of materials due to their unique properties and the fact that they encompass a wide range of samples with at least one dimension ranging from 1 to 100 nm. The deliberate design of nanoparticles enables the achievement of extremely large surface areas. In the field of cost-effective electrochemical devices for energy storage and conversion applications, nanomaterials have emerged as a key area of research. Their exceptional physical and chemical properties have led to extensive investigations aimed at improving the performance and cost-effectiveness of electrochemical devices, including batteries, supercapacitors, and fuel cells. The continuous development and enhancement of these high-performance materials are driven by the demand for enhanced productivity, connectivity, and sustainability at a reduced cost. This review focuses on the electrochemical performance of electrodes, energy storage, and electrochemical sensors (ES) based on nanotechnology. It discusses the application of nanotechnology in electrochemistry for water purification and the fate of substances in water, while also introducing green nanotechnology and cost-effective, high-fidelity product creation through electrochemical methods. The study emphasizes the synthesis of novel nanomaterials, such as metal–organic frameworks (MOFs), covalent organic frameworks (COFs), and MXenes, with applications in electrochemical devices. Furthermore, it explores the integration of nanostructures with electrochemical systems in economically significant and future applications, along with the challenges faced by nanotechnology-based industries. The paper also explores the interplay between nanomaterials and biosensors, which play a vital role in electrochemical devices. Overall, this review provides a comprehensive overview of the significance of nanomaterials in the development of cost-effective electrochemical devices for energy storage and conversion. It highlights the need for further research in this rapidly evolving field and serves as a valuable resource for researchers and engineers interested in the latest advancements in nanomaterials for electrochemical devices.
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Affiliation(s)
- Hosam M. Saleh
- Radioisotope Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo 11787, Egypt
| | - Amal I. Hassan
- Radioisotope Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo 11787, Egypt
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