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Liu X, Li P, Liu Y, Zhang C, He M, Pei Z, Chen J, Shi K, Liu F, Wang W, Zhang W, Jiang P, Huang X. Hybrid Passive Cooling for Power Equipment Enabled by Metal-Organic Framework. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2409473. [PMID: 39240041 DOI: 10.1002/adma.202409473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/03/2024] [Indexed: 09/07/2024]
Abstract
While providing electrical energy for human society, power equipment also consumes electricity and generate heat. Cooling equipment consumes a significant amount of electricity, further increasing energy consumption and load on the power grid. Therefore, there is an urgent need to develop low-energy and sustainable cooling technologies for power equipment. In this study, a hybrid passive cooling composite designed to enhance heat dissipation for heavy-load power equipment is introduced. Specifically, the composite material achieves outstanding radiative cooling performance with an average solar reflectance of up to 0.98, while its excellent atmospheric water harvesting performance ensures high evaporation cooling power without the need for manual water replenishment. As a result, the composite effectively lowers the temperature of outdoor heavy-load power equipment (e.g., transformers) by 25.3 °C. The excellent heat dissipation properties of the composite make it a powerful tool in safeguarding electrical systems.
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Affiliation(s)
- Xiangyu Liu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Pengli Li
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yijie Liu
- School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Chuan Zhang
- School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Meng He
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhantao Pei
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jie Chen
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kunming Shi
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Fei Liu
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wanlin Wang
- School of Physical Sciences, Great Bay University, Dongguan, 523000, China
| | - Wang Zhang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Pingkai Jiang
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xingyi Huang
- Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Department of Polymer Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
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2
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Denk J, Liao X, Knolle W, Kahnt A, Greiner A, Schafföner S, Agarwal S, Motz G. Novel multifibrillar carbon and oxidation-stable carbon/ceramic hybrid fibers consisting of thousands of individual nanofibers with high tensile strength. Sci Rep 2024; 14:18143. [PMID: 39103502 DOI: 10.1038/s41598-024-68794-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Accepted: 07/29/2024] [Indexed: 08/07/2024] Open
Abstract
In this study, multifibrillar carbon and carbon/ceramic (C/SiCON) fibers consisting of thousands of single nanofibers are continuously manufactured. The process starts with electrospinning of polyacrylonitrile (PAN) and PAN/oligosilazane precursors resulting in poorly aligned polymer fibers. Subsequent stretching leads to parallel aligned multifibrillar fibers, which are continuously stabilized and pyrolyzed to C or C/SiCON hybrid fibers. The multifibrillar carbon fibers show a high tensile strength of 911 MPa and Young's modulus of 154 GPa, whereas the multifibrillar C/SiCON fibers initially have only tensile strengths of 407 MPa and Young's modulus of 77 GPa, due to sticking of the nanofibers during the stabilization in air. Additional curing with electron beam radiation, results in a remarkable increase in tensile strength of 707 MPa and Young's modulus of 98 GPa. The good mechanical properties are highlighted by the low linear density of the multifibrillar C/SiCON fibers (~ 1 tex) compared to conventional C and SiC fiber bundles (~ 200 tex). In combination with the large surface area of the fibers better mechanical properties of respective composites with a reduced fiber content can be achieved. In addition, the developed approach offers high potential to produce advanced endless multifibrillar carbon and C/SiCON nanofibers in an industrial scale.
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Affiliation(s)
- Jakob Denk
- Chair of Ceramic Materials Engineering, University of Bayreuth, 95440, Bayreuth, Germany
| | - Xiaojian Liao
- Macromolecular Chemistry 2 and Bavarian Polymer Institute, University of Bayreuth, 95440, Bayreuth, Germany.
| | - Wolfgang Knolle
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318, Leipzig, Germany
| | - Axel Kahnt
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318, Leipzig, Germany
| | - Andreas Greiner
- Macromolecular Chemistry 2 and Bavarian Polymer Institute, University of Bayreuth, 95440, Bayreuth, Germany
| | - Stefan Schafföner
- Chair of Ceramic Materials Engineering, University of Bayreuth, 95440, Bayreuth, Germany
| | - Seema Agarwal
- Macromolecular Chemistry 2 and Bavarian Polymer Institute, University of Bayreuth, 95440, Bayreuth, Germany.
- Bavarian Center for Battery Technology (BayBatt), University of Bayreuth, 95440, Bayreuth, Germany.
| | - Günter Motz
- Chair of Ceramic Materials Engineering, University of Bayreuth, 95440, Bayreuth, Germany.
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Yang M, Li X, Yao N, Yu J, Yin X, Zhang S, Ding B. Two-Dimensional Piezoelectric Nanofibrous Webs by Self-Polarized Assembly for High-Performance PM 0.3 Filtration. ACS NANO 2024; 18:16895-16904. [PMID: 38906832 DOI: 10.1021/acsnano.4c02731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
Particulate matter (PM) pollution has posed a serious threat to public health, especially the global spread of infectious diseases. Most existing air filtration materials are still subjected to a compromise between removal efficiency and air permeability on account of their stacking bulk structures. Here, we proposed a self-polarized assembly technique to create two-dimensional piezoelectric nanofibrous webs (PNWs) directly from polymer solutions. The strategy involves droplets deforming into ultrathin liquid films by inertial flow, liquid films evolving into web-like architectures by instantaneous phase inversion, and enhanced dipole alignment by cluster electrostatics. The assembled continuous webs exhibit integrated structural superiorities of nanoscale diameters (∼20 nm) of the internal fibers and through pores (∼100 nm). Combined with the wind-driven electrostatic property derived from the enhanced piezoelectricity, the PNW filter shows high efficiency (99.48%) and low air resistance (34 Pa) against PM0.3 as well as high transparency (84%), superlight weight (0.7 g m-2), and long-term stable service life. This creation of such versatile nanomaterials may offer insight into the design and upgrading of high-performance filters.
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Affiliation(s)
- Ming Yang
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Xiaoxi Li
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Ni Yao
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Xia Yin
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Shichao Zhang
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
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4
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Xu X, Liu S, Liu X, Yu J, Ding B. Engineering self-assembled 2D nano-network membranes through hierarchical phase separation for efficient air filtration. J Colloid Interface Sci 2024; 657:463-471. [PMID: 38070332 DOI: 10.1016/j.jcis.2023.12.014] [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: 09/22/2023] [Revised: 11/24/2023] [Accepted: 12/03/2023] [Indexed: 01/02/2024]
Abstract
Air pollution has garnered significant worldwide attention; however, the existing air filtration materials still suffer from issues related to monotonous structure and the inherent trade-off between PM rejection and air permeability. Herein, a spider web-inspired composite membrane with continuous monolayer structured 2D nano-networks tightly welded on nanofibers in the electrospun membrane scaffold is designed via a hierarchical phase separation strategy. The resultant biomimetic hierarchical-structured membranes possess the integrated features of hierarchical multiscale structures of 2D ultrafine networks composed of nanowires with a diameter of 31 nm self-assembled by nanoparticles, exceptional characteristics involving small average aperture, extremely low network thickness, high porosity and promising pore channel connectivity, combined with rich surface polar functional groups (3.02D dipole moment). Consequently, the composite membrane exhibits a high PM0.3 capture efficiency of 99.6 % and low pressure drop of 58.8 Pa, less than 0.06 % of atmosphere pressure, with outstanding long-term PM2.5 recycling filtration performance. The hierarchical phase separation-driven 2D nano-networks construction strategy, by virtue of their feasibility and tunability, holds great promise for widespread application across diverse membrane-related domains for air filtration.
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Affiliation(s)
- Xin Xu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Shude Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China.
| | - Xiaoyan Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China.
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China.
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5
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Shao Z, Shen R, Gui Z, Xie J, Jiang J, Wang X, Li W, Guo S, Liu Y, Zheng G. Ethyl cellulose/gelatin/β-cyclodextrin/curcumin nanofibrous membrane with antibacterial and formaldehyde adsorbable capabilities for lightweight and high-performance air filtration. Int J Biol Macromol 2024; 254:127862. [PMID: 37939775 DOI: 10.1016/j.ijbiomac.2023.127862] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/17/2023] [Accepted: 11/01/2023] [Indexed: 11/10/2023]
Abstract
Functionalization of bio-based nanofibers is the development tendency of high-performance air filter. However, the conventional structural optimization strategy based on high solution conductivity greatly hinders the development of fully bio-based air filter, and not conducive to sustainable development. This work fabricated fully bio-based nanofibrous membrane with formaldehyde-adsorbable and antibacterial capabilities by electrospinning low-conductivity solution for high-performance air filtration and applied to lightweight mask. The "water-like" ethyl cellulose (EC) was selected as the base polymer to "nourish" functional materials of gelatin (GE), β-cyclodextrin (βCD), and curcumin (Cur), thus forming a solution system with high binding energy differences and electrospinning into ultrafine bimodal nanofibers. The filtration efficiency for 0.3 μm NaCl particles, pressure drop, and quality factor were 99.25 %, 53 Pa, and 0.092 Pa-1, respectively; the bacteriostatic rates against Escherichia coli and Staphylococcus aureus were 99.9 % and 99.4 %, respectively; the formaldehyde adsorption capacity was 442 μg/g. This is the first report on antibacterial and formaldehyde-adsorbable high-performance air filter entirely made from bio-based materials. This simple strategy will greatly broaden the selection of materials for preparing high-performance multifunctional air filter, and promote the development of bio-based air filter.
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Affiliation(s)
- Zungui Shao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Ruimin Shen
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Zeqian Gui
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Junjie Xie
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Jiaxin Jiang
- School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Xiang Wang
- School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Wenwang Li
- School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Shumin Guo
- School of Mathematical Sciences, Xiamen University, Xiamen 361102, China
| | - Yifang Liu
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Gaofeng Zheng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China.
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6
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Gong X, Ding M, Gao P, Liu X, Yu J, Zhang S, Ding B. High-Performance Liquid-Repellent and Thermal-Wet Comfortable Membranes Using Triboelectric Nanostructured Nanofiber/Meshes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305606. [PMID: 37540196 DOI: 10.1002/adma.202305606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/21/2023] [Indexed: 08/05/2023]
Abstract
Skin-like functional membranes with liquid resistance and moisture permeability are in growing demand in various applications. However, the membranes have been facing a long-term dilemma in balancing waterproofness and breathability, as well as resisting internal liquid sweat transport, resulting in poor thermal-wet comfort. Herein, a novel electromeshing technique, based on manipulating the ejection and phase separation of charged liquids, is developed to create triboelectric nanostructured nano-mesh consisting of hydrophobic ferroelectric nanofiber/meshes and hydrophilic nanofiber/meshes. By combining the true nanoscale diameter (≈22 nm), small pore size, and high porosity, high waterproofness (129 kPa) and breathability (3736 g m-2 per day) for the membranes are achieved. Moreover, the membranes can break large water clusters into small water molecules to promote sweat absorption and release by coupling hydrophilic wicking and triboelectric field polarization, exhibiting a satisfactory water evaporation rate (0.64 g h-1 ) and thermal-wet comfort (0.7 °C cooler than the cutting-edge poly(tetrafluoroethylene) protective membranes). This work may shed new light on the design and development of advanced protective textiles.
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Affiliation(s)
- Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Mingle Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Ping Gao
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Xiaoyan Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
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7
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Gong X, Ding M, Gao P, Ji Y, Wang X, Liu XY, Yu J, Zhang S, Ding B. High-Performance Waterproof, Breathable, and Radiative Cooling Membranes Based on Nanoarchitectured Fiber/Meshworks. NANO LETTERS 2023. [PMID: 37991483 DOI: 10.1021/acs.nanolett.3c03968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Smart membranes with protection and thermal-wet comfort are highly demanded in various fields. Nevertheless, the existing membranes suffer from a tradeoff dilemma of liquid resistance and moisture permeability, as well as poor thermoregulating ability. Herein, a novel strategy, based on the synchronous occurrence of humidity-induced electrospinning and electromeshing, is developed to synthesize a dual-network structured nanofiber/mesh for personal comfort management. Manipulating the ejection, deformation, and phase separation of spinning jets and charged droplets enables the creation of nanofibrous membranes composed of radiative cooling nanofibers and 2D nanostructured meshworks. With a combination of a true-nanoscale fiber (∼70 nm) in 2D meshworks, a small pore size (0.84 μm), and a superhydrophobic surface (151.9°), the smart membranes present high liquid repellency (95.6 kPa), improved breathability (4.05 kg m-2 d-1), and remarkable cooling performance (7.9 °C cooler than commercial cotton fabrics). This strategy opens up a pathway to the design of advanced smart textiles for personal protection.
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Affiliation(s)
- Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Mingle Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Ping Gao
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Yu Ji
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Xiao-Yan Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
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8
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Yang M, Gong X, Wang S, Tian Y, Yin X, Wang X, Yu J, Zhang S, Ding B. Two-Dimensional Nanofibrous Networks by Superspreading-Based Phase Inversion for High-Efficiency Separation. NANO LETTERS 2023; 23:10579-10586. [PMID: 37934045 DOI: 10.1021/acs.nanolett.3c03486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Two-dimensional (2D) nanomaterials have been widely applied as building blocks of nanoporous materials for high-precision separations. However, most existing 2D nanomaterials suffer from poor continuity and a lack of interior linking, resulting in deteriorated performance when assembled into macroscopic bulk structures. Here, a unique superspreading-based phase inversion technique is proposed to directly construct 2D nanofibrous networks (NFNs) from a polymer solution. By tailoring capillary behavior, polymer solution droplets evolve into ultrathin liquid films through superspreading; manipulating phase instability, subsequently, enables the liquid film to phase invert into continuous nanostructured networks. The assembled single-layered NFNs possess integrated structural superiorities of 1D nanoscale fiber diameter (∼40 nm) and 2D lateral infinity, exhibiting a weblike nanoarchitecture with extremely small through-pores (∼100 nm). Our NFNs show remarkable performances in air filtration (PM0.3 removal) and water purification (microfiltration level). This creation of such attractive 2D fibrous nanomaterials can pave the way for versatile high-performance separation applications.
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Affiliation(s)
- Ming Yang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Sai Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yucheng Tian
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xia Yin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
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9
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Sammartino C, Shokef Y, Pinchasik BE. Percolation in Networks of Liquid Diodes. J Phys Chem Lett 2023; 14:7697-7702. [PMID: 37606508 PMCID: PMC10476187 DOI: 10.1021/acs.jpclett.3c01885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/04/2023] [Indexed: 08/23/2023]
Abstract
Liquid diodes are surface structures that facilitate the spontaneous flow of liquids in a specific direction. In nature, they are used to increase water collection and uptake, reproduction, and feeding. However, large networks with directional properties are exceptional and are typically limited up to a few centimeters. Here, we simulate, design, and 3D print liquid diode networks consisting of hundreds of unit cells. We provide structural and wettability guidelines for directional transport of liquids through these networks and introduce percolation theory in order to identify the threshold between a connected network, which allows fluid to reach specific points, and a disconnected network. By constructing well-defined networks with uni- and bidirectional pathways, we experimentally demonstrate the applicability of models describing isotropically directed percolation. We accurately predict the network permeability and the liquid final state. These guidelines are highly promising for the development of structures for spontaneous, yet predictable, directional liquid transport.
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Affiliation(s)
- Camilla Sammartino
- School
of Mechanical Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Yair Shokef
- School
of Mechanical Engineering, Tel Aviv University, Tel Aviv 69978, Israel
- Center
for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv 69978, Israel
- Center
for Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 69978, Israel
- International
Institute for Sustainability with Knotted Chiral Meta Matter, Hiroshima University, Hiroshima 739-8511, Japan
| | - Bat-El Pinchasik
- School
of Mechanical Engineering, Tel Aviv University, Tel Aviv 69978, Israel
- Center
for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv 69978, Israel
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10
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Huang Y, Kasuga T, Nogi M, Koga H. Clearly transparent and air-permeable nanopaper with porous structures consisting of TEMPO-oxidized cellulose nanofibers. RSC Adv 2023; 13:21494-21501. [PMID: 37465580 PMCID: PMC10351216 DOI: 10.1039/d3ra03840h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
Optically transparent materials that are air permeable have potentially numerous applications, including in wearable devices. From the perspective of sustainable development, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibers with widths of 3-4 nm have attracted considerable attention as starting materials for the preparation of clearly transparent nanofiber paper (denoted as conventional nanopaper). However, conventional nanopaper that is prepared from a water dispersion of TEMPO-oxidized cellulose nanofibers by direct drying exhibits poor air permeability owing to its densely packed layered structure. In this study, we prepared a clearly transparent and air-permeable nanopaper by applying filtration-based solvent exchange from high-surface-tension water to low-surface-tension ethanol and hexane, followed by drying under continuous vacuum filtration. The resulting hexane-exchanged nanopaper had a porous structure with individually dispersed and thin nanofiber networks and interlayer pore spaces. Owing to the tailored porous structures, the hexane-exchanged nanopaper provides similar clear transparency (total light transmittance and haze at 600 nm: 92.9% and 7.22%, respectively) and 106 times higher air permeability (7.8 × 106 mL μm m-2 day-1 kPa-1) compared to the conventional nanopaper. This study will facilitate the development of clearly transparent and air-permeable nanopapers to extend their functional applications.
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Affiliation(s)
- Yintong Huang
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Takaaki Kasuga
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Masaya Nogi
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Hirotaka Koga
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
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11
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Yang Y, Wang H, Wang C, Chen Y, Dang B, Liu M, Zhang X, Li Y, Sun Q. Dual-Network Structured Nanofibrous Membranes with Superelevated Interception Probability for Extrafine Particles. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36907989 DOI: 10.1021/acsami.3c01385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Airborne particulate matter (PM) pollution has caused a public health threat, including nanoscale particles, especially with emerging infectious diseases and indoor and vehicular environmental pollution. However, most existing indoor air filtration units are expensive, energy-intensive, and bulky, and there is an unavoidable trade-off between low-efficiency PM0.3/pathogen interception, PM removal, and air resistance. Herein, we designed and synthesized a two-dimensional continuous cellulose-sheath/net with a unique dual-network corrugated architecture to manufacture high-efficiency air filters and even N95 particulate face mask. Combined with its sheath/net structured pores (size 100-200 nm) consisting of a cellulose framework (1-100 nm diameter), the cellulose sheath/net filter offers high-efficiency air filtration (>99.5338%, Extrafine particles; >99.9999%, PM2.5), low-pressure drops, and a robustness quality factor of >0.14 Pa-1, utilizing their ultralight weight of 30 mg/m2 and physical adhesion and sieving behaviors. Simultaneously, masks prepared with cellulose-sheath/net filters are more likely to capture and block smaller particles than the N95 standard. The synthesis of such materials with their nanoscale features and designed macrostructures may suggest new design criteria for a novel generation of high-efficiency air filter media for different applications such as personal protection products and industrial dust removal.
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Affiliation(s)
- Yushan Yang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Hanwei Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Chao Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Yipeng Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Baokang Dang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Ming Liu
- Guangxi Fenglin Wood Industry Group Co., Ltd., Nanning 530000, P. R. China
| | - Xiaochun Zhang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Yingying Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Qingfeng Sun
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
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12
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Gong X, Jin C, Liu XY, Yu J, Zhang S, Ding B. Scalable Fabrication of Electrospun True-Nanoscale Fiber Membranes for Effective Selective Separation. NANO LETTERS 2023; 23:1044-1051. [PMID: 36655867 DOI: 10.1021/acs.nanolett.2c04667] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electrospun fibers have received wide attention in various fields ranging from the environment and healthcare to energy. However, nearly all electrospun fibers suffer from a pseudonanoscale diameter, resulting in fabricated membranes with a large pore size and limited separation performance. Herein, we report a novel strategy based on manipulating the equilibrium of stretch deformation and phase separation of electrospun jets to develop true-nanoscale fibers for effective selective separation. The obtained fibers present true-nanoscale diameters (∼67 nm), 1 order of magnitude less than those of common electrospun fibers, which endows the resultant membranes with remarkable nanostructural characteristics and separation performances in areas of protective textiles (waterproofness of 113 kPa and breathability of 4.1 kg m-2 d-1), air filtration (efficiency of 99.3% and pressure drop of 127.4 Pa), and water purification (flux of 81.5 kg m-2 h-1 and salt rejection of 99.94%). This work may shed light on developing high-performance separation materials for various applications.
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Affiliation(s)
- Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Chunfeng Jin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Xiao-Yan Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, People's Republic of China
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13
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Su C, Zhang L, Zhang Y, Huang X, Ye Y, Xia Y, Gong Z, Qin X, Liu Y, Guo S. P(VDF-TrFE)/BaTiO 3 Nanofibrous Membrane with Enhanced Piezoelectricity for High PM 0.3 Filtration and Reusable Face Masks. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5845-5855. [PMID: 36652453 DOI: 10.1021/acsami.2c19569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In the background of air pollution and regular COVID-19 prevention, personal protective masks are necessary for our daily life. However, protective masks with high PM0.3 filtration usually have poor air permeability and are mostly disposable, leading to a heavy burden on the environment. In this work, a reusable membrane based on piezoelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] nanofibers embedded with BaTiO3 nanoparticles (BTO NPs) was developed. The P(VDF-TrFE)/BTO composite nanofibers not only have enhanced piezoelectricity and surface polarity but also have reduced diameters that could be beneficial for electrostatic adhesion, pole-polar interactions, and mechanical sieving to increase the PM0.3 capture capacity. Moreover, the BTO NPs also improved the charge storage capacity of the composite membrane, which could further enhance the PM0.3 filtration efficiency after corona treatment. The piezoelectric mask based on P(VDF-TrFE)/BTO composite nanofibers has high filtration efficiencies of 96% for PM0.3 and 98% for bacteria, while the pressure drop was only 182 Pa, which is lower than the commercial N95 standard of 343.2 Pa. Furthermore, the piezoelectric mask has a long and stable filtration performance after 5 cycles of 75% alcohol disinfection, demonstrating that the P(VDF-TrFE)/BTO composite membrane has a potential application in personal protective masks with comfortable and reusable properties.
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Affiliation(s)
- Cuicui Su
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Lingling Zhang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
| | - Yuanzheng Zhang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Xiaocheng Huang
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo315211, China
| | - Yumin Ye
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo315211, China
| | - Yu Xia
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Zhiyi Gong
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Xiaojuan Qin
- Department of Materials and Chemical Engineering, Taiyuan University, Taiyuan030032, China
| | - Yichao Liu
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
| | - Shishang Guo
- Hubei Yangtze Memory Laboratories, Wuhan430205, China
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
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14
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Shi S, Wang Y, Meng Q, Lan Z, Liu C, Zhou Z, Sun Q, Shen X. Conductive Cellulose-Derived Carbon Nanofibrous Membranes with Superior Softness for High-Resolution Pressure Sensing and Electrophysiology Monitoring. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1903-1913. [PMID: 36583722 DOI: 10.1021/acsami.2c19643] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Here, a strategy to overcome the stiff and brittle nature of cellulose-derived carbon nanofibrils (CCNFs) is proposed through a facile, low-cost, and scalable approach. Flexible and conformal CCNFs with a low bending rigidity below 55.4 mN and tunable conductivities of 0.14-45.5 S m-1 are developed by introducing silanol as a multieffect additive in the electrospun hybrid nanofibrous network and subsequent carbonization at a relatively high temperature (900 °C) and chemical vapor deposition of polypyrrole (PPy) on the hybrid carbon nanofibril surface. Silica acts as a lubricant in each rigid carbon fiber to improve flexibility of the CCNF structure as well as a template during cellulose carbonization to prevent the melting of carbon nanofibrils. Meanwhile, the uniform coating of PPy leads to an improvement in electrical conductivity while conserving the porous structure and compressibility of the CCNF nets. These conductive hybrid CCNF films are evaluated as mechanoreceptors and physiological sensors, which are demonstrated to be applied in intelligent electronics including electronic skin, human-machine interfaces, and epidermic electrodes. The design or working principles of the hybrid CCNFs for achieving optimum applicable effects when applied in different scenarios are revealed.
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Affiliation(s)
- Shitao Shi
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Yuanyuan Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Qingyu Meng
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Zhuyue Lan
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Chencong Liu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Zhu Zhou
- College of Optical Mechanical and Electrical Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Qingfeng Sun
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
| | - Xiaoping Shen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou311300, China
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15
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Chen D, Chen N, Liu F, Wang Y, Liang H, Yang Y, Yuan Q. Flexible Point-of-Care Electrodes for Ultrasensitive Detection of Bladder Tumor-Relevant miRNA in Urine. Anal Chem 2023; 95:1847-1855. [PMID: 36607132 DOI: 10.1021/acs.analchem.2c03156] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Portable point-of-care testing (POCT) is currently drawing enormous attention owing to its great potential for disease diagnosis and personal health management. Electrochemical biosensors, with the intrinsic advantages of cost-effectiveness, fast response, ease of miniaturization, and integration, are considered as one of the most promising candidates for POCT application. However, the clinical application of electrochemical biosensors-based POCT is hindered by the decreased detection sensitivity due to the low abundance of disease-relevant biomolecules in extremely complex biological samples. Herein, we construct a flexible electrochemical biosensor based on single-stranded DNA functionalized single-walled carbon nanotubes (ssDNA-SWNTs) for high sensitivity and stability detection of miRNA-21 in human urine to achieve bladder cancer (BCa) diagnosis and classification. The ssDNA-SWNT electrodes with a 2D interconnected network structure exhibit a high electrical conductivity, thus enabling the ultrasensitive detection of miRNA-21 with a detection limit of 3.0 fM. Additionally, the intrinsic flexibility of ssDNA-SWNT electrodes endows the biosensors with the capability to achieve high stability detection of miRNA-21 even under large bending deformations. In a cohort of 40 BCa patients at stages I-III and 44 negative control samples, the constructed ssDNA-SWNT biosensors could detect BCa with a 92.5% sensitivity, an 88.6% specificity, and classify the cancer stages with an overall accuracy of 81.0%. Additionally, the flexible ssDNA-SWNT biosensors could also be utilized for treatment efficiency assessment and cancer recurrence monitoring. Owing to their excellent sensitivity and stability, the designed flexible ssDNA-SWNT biosensors in this work propose a strategy to realize point-of-care detection of complex clinical samples to achieve personalized healthcare.
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Affiliation(s)
- Duo Chen
- College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, P. R. China
| | - Na Chen
- College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, P. R. China
| | - Fangning Liu
- Urology Department, Union Hospital, Tongji Medical College of Huazhong Science and Technology University, Wuhan 430000, P. R. China
| | - Yiming Wang
- College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, P. R. China
| | - Huageng Liang
- Urology Department, Union Hospital, Tongji Medical College of Huazhong Science and Technology University, Wuhan 430000, P. R. China
| | - Yanbing Yang
- College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, P. R. China
| | - Quan Yuan
- College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, P. R. China
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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16
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He J, Ma C, Yang J, Zou X, Sun B, Sun Y, Wang C. Transparent ultrathin SiO 2 nanowire aerogel displaying novel properties when interacting with water: A promising versatile functional platform. FUNDAMENTAL RESEARCH 2023; 3:118-125. [PMID: 38933571 PMCID: PMC11197594 DOI: 10.1016/j.fmre.2022.01.019] [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: 11/23/2021] [Revised: 01/23/2022] [Accepted: 01/24/2022] [Indexed: 11/17/2022] Open
Abstract
With low density, high porosity, and outstanding physicochemical stability, ceramic nanowire aerogels and sponges exhibit various interesting properties. Herein, an ultrathin silica nanowire aerogel (SiO2 NWs-A) was achieved via a facile chemical vapor deposition route. In addition to good mechanical and thermal performances, properties resulting from active water-aerogel interactions are revealed, i.e., outstanding transparency, strong capillary effect, enhanced compressive strength (a reversible strain of ∼62%), switchable wettability and robust shape retention ability when filled with water. The physical mechanism related to these interesting properties is demonstrated basically according to its unique features (distinctly reduced nanowire diameter, enriched nanoscopic gap channels, and reinforced network). To demonstrate the superiority, an advantageous solar vapor generation system (hydrophilic NWs-A/reduced graphene oxide (rGO)/ hydrophobic NWs-A) was obtained by integrating these favorable characteristics, giving rise to remarkably promoted vapor evaporation rate and energy efficiency compared to the rGO hydrophobic NWs-A device. These results contribute to the structural design and functional exploration of nanowire aerogels.
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Affiliation(s)
- Jingbo He
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
| | - Churong Ma
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, China
| | - Jin Yang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
| | - Xiaobin Zou
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
| | - Bo Sun
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
| | - Yong Sun
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
| | - Chengxin Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, China
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17
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Gong X, Yin X, Wang F, Liu X, Yu J, Zhang S, Ding B. Electrospun Nanofibrous Membranes: A Versatile Medium for Waterproof and Breathable Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205067. [PMID: 36403221 DOI: 10.1002/smll.202205067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Waterproof and breathable membranes that prevent liquid water penetration, while allowing air and moisture transmission, have attracted significant attention for various applications. Electrospun nanofiber materials with adjustable pore structures, easily tunable wettability, and good pore connectivity, have shown significant potential for constructing waterproof and breathable membranes. Herein, a systematic overview of the recent progress in the design, fabrication, and application of waterproof and breathable nanofibrous membranes is provided. The various strategies for fabricating the membranes mainly including one-step electrospinning and post-treatment of nanofibers are given as a starting point for the discussion. The different design concepts and structural characteristics of each type of waterproof and breathable membrane are comprehensively analyzed. Then, some representative applications of the membranes are highlighted, involving personal protection, desalination, medical dressing, and electronics. Finally, the challenges and future perspectives associated with waterproof and breathable nanofibrous membranes are presented.
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Affiliation(s)
- Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Xia Yin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Fei Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Xiaoyan Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 200051, China
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18
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Liu H, Yu J, Zhang S, Ding B. Air-Conditioned Masks Using Nanofibrous Networks for Daytime Radiative Cooling. NANO LETTERS 2022; 22:9485-9492. [PMID: 36469697 DOI: 10.1021/acs.nanolett.2c03585] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Face masks, as effective measures for passive air pollution control, are of fundamental importance, especially with the outbreak of emerging infectious diseases. Most existing masks are dense or thick, resulting in a lack of thermal/humidity comfort level; despite being worn tightly, they show limited PM0.3/pathogen removal. Here, we use a facile strategy to create air-conditioned masks using heterogeneous nanofibrous networks, based on an electrospinning/netting technique. Manipulation of the phase separation and self-assembly of charged jet/droplets by control of humidity-induced double diffusion and Taylor cone instability allows for the generation of air-conditioned masks consisting of radiative cooling wrinkled nanofibers and 2D nanostructured networks. Our masks show desirable microenvironment with high-efficiency PM0.3 removal (>99.988%), low air resistance (0.07% of atmospheric pressure), and remarkable radiative cooling capacity (∼2.8 °C temperature and ∼10% humidity drop), making high-performance filtration and temperature/humidity management "always online". This work should make possible the development of high-performance, energy-saving, and scalable fiber textiles for various applications.
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Affiliation(s)
- Hui Liu
- Innovation Center for Textile Science and Technology, College of Materials Science and Engineering, Donghua University, Shanghai201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Materials Science and Engineering, Donghua University, Shanghai201620, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Materials Science and Engineering, Donghua University, Shanghai201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Materials Science and Engineering, Donghua University, Shanghai201620, China
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19
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Nan X, Wang X, Kang T, Zhang J, Dong L, Dong J, Xia P, Wei D. Review of Flexible Wearable Sensor Devices for Biomedical Application. MICROMACHINES 2022; 13:1395. [PMID: 36144018 PMCID: PMC9505309 DOI: 10.3390/mi13091395] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 05/26/2023]
Abstract
With the development of cross-fertilisation in various disciplines, flexible wearable sensing technologies have emerged, bringing together many disciplines, such as biomedicine, materials science, control science, and communication technology. Over the past few years, the development of multiple types of flexible wearable devices that are widely used for the detection of human physiological signals has proven that flexible wearable devices have strong biocompatibility and a great potential for further development. These include electronic skin patches, soft robots, bio-batteries, and personalised medical devices. In this review, we present an updated overview of emerging flexible wearable sensor devices for biomedical applications and a comprehensive summary of the research progress and potential of flexible sensors. First, we describe the selection and fabrication of flexible materials and their excellent electrochemical properties. We evaluate the mechanisms by which these sensor devices work, and then we categorise and compare the unique advantages of a variety of sensor devices from the perspective of in vitro and in vivo sensing, as well as some exciting applications in the human body. Finally, we summarise the opportunities and challenges in the field of flexible wearable devices.
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Affiliation(s)
- Xueli Nan
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xin Wang
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
| | - Tongtong Kang
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
| | - Jiale Zhang
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
| | - Lanxiao Dong
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
| | - Jinfeng Dong
- School of Automation and Software Engineering, Shanxi University, Taiyuan 030006, China
| | - Peng Xia
- School of Mathematical Sciences, Shanxi University, Taiyuan 030006, China
| | - Donglai Wei
- School of Mathematical Sciences, Shanxi University, Taiyuan 030006, China
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20
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Wang L, Yao H, Chi F, Yan J, Cheng H, Li Y, Jiang L, Qu L. Spatial-Interleaving Graphene Supercapacitor with High Area Energy Density and Mechanical Flexibility. ACS NANO 2022; 16:12813-12821. [PMID: 35914233 DOI: 10.1021/acsnano.2c04989] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The booming portable electronics market has raised huge demands for the development of supercapacitors with mechanical flexibility and high power density in the finite area; however, this is still unsatisfied by the currently thickness-confined sandwich design or the in-plane interdigital configuration with limited mechanical features. Here, a spatial-interleaving supercapacitor (SI-SC) is first designed and constructed, in which the graphene microelectrodes are reversely stacked layer by layer within a three-dimensional (3D) space. Because each microelectrode matches well with four counter microelectrodes and all 3D spatial-interleaving microelectrodes have narrow interspaces that maintain the efficient ions transport in the whole device, this SI-SC has a prominent liner capacitance increase along with the device thickness. As a result, the high specific areal capacitance of 36.46 mF cm-2 and 5.34 μWh cm-2 energy density is achieved on the 100 μm thick device. Especially, the microelectrodes in each layer are interdigitated, ensuring the outstanding mechanical flexibility of SI-SC, with ∼98.7% performance retention after 104 cycles of bending tests, realizing the excellent integration of high area energy density and mechanical flexibility in the finite area. Furthermore, the SI-SC units can be easily integrated into wearable electronics to power wristwatches, light-emitting diodes (LEDs), calculators, and so on for practical applications.
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Affiliation(s)
- Lifeng Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Houze Yao
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Fengyao Chi
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Jianfeng Yan
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Huhu Cheng
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Yan Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Lan Jiang
- Laser Micro-/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Liangti Qu
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
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21
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Cheng X, Liu YT, Si Y, Yu J, Ding B. Direct synthesis of highly stretchable ceramic nanofibrous aerogels via 3D reaction electrospinning. Nat Commun 2022; 13:2637. [PMID: 35552405 PMCID: PMC9098874 DOI: 10.1038/s41467-022-30435-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/26/2022] [Indexed: 12/03/2022] Open
Abstract
Ceramic aerogels are attractive for many applications due to their ultralow density, high porosity, and multifunctionality but are limited by the typical trade-off relationship between mechanical properties and thermal stability when used in extreme environments. In this work, we design and synthesize ceramic nanofibrous aerogels with three-dimensional (3D) interwoven crimped-nanofibre structures that endow the aerogels with superior mechanical performances and high thermal stability. These ceramic aerogels are synthesized by a direct and facile route, 3D reaction electrospinning. They display robust structural stability with structure-derived mechanical ultra-stretchability up to 100% tensile strain and superior restoring capacity up to 40% tensile strain, 95% bending strain and 60% compressive strain, high thermal stability from −196 to 1400 °C, repeatable stretchability at working temperatures up to 1300 °C, and a low thermal conductivity of 0.0228 W m−1 K−1 in air. This work would enable the innovative design of high-performance ceramic aerogels for various applications. Ceramic aerogels are generally brittle and often tend to structurally collapse under large external tensile strain. Here the authors synthesize large-scale stretchable ceramic aerogels with interwoven crimped nanofibers by combining electrohydrodynamic method and 3D reaction electrospinning.
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Affiliation(s)
- Xiaota Cheng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Yi-Tao Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Yang Si
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China.
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China.
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22
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Tang N, Chen Y, Li Y, Yu B. 2D Polymer Nanonets: Controllable Constructions and Functional Applications. Macromol Rapid Commun 2022; 43:e2200250. [PMID: 35524950 DOI: 10.1002/marc.202200250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/24/2022] [Indexed: 11/12/2022]
Abstract
Two-dimensional (2D) polymer nanonets have demonstrated great potential in various application fields due to their integrated advantages of ultrafine diameter, small pore size, high porosity, excellent interconnectivity, and large specific surface area. Here, a comprehensive overview of the controlled constructions of the polymer nanonets derived from electrospinning/netting, direct electronetting, self-assembly of cellulose nanofibers, and nonsolvent-induced phase separation is provided. Then, the widely researched multifunctional applications of polymer nanonets in filtration, sensor, tissue engineering, and electricity are also given. Finally, the challenges and possible directions for further developing the polymer nanonets are also intensively highlighted. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ning Tang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yu Chen
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yuyao Li
- School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Bin Yu
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
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23
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Photocatalytic efficiency of graphene/nickel oxide nanocomposites towards the degradation of anionic and cationic dye molecules under visible light. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Wu H, Cai H, Zhang S, Yu J, Ding B. Ultralight, Superelastic, and Washable Nanofibrous Sponges with Rigid-Flexible Coupling Architecture Enable Reusable Warmth Retention. NANO LETTERS 2022; 22:830-837. [PMID: 35005975 DOI: 10.1021/acs.nanolett.1c04571] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanofibrous sponges enable promising potentials in warmth retention but are impeded by short service life and nonwashability, owing to their inadequate mechanical properties. Herein, a scalable strategy is reported to develop ultralight, superelastic, and washable micro/nanofibrous sponges (MNFSs) with a rigid-flexible coupling architecture created by bridging high-modulus polyethylene terephthalate microfibers with flexible polyacrylonitrile nanofibers via robust bonding structures. Meanwhile, the in situ doping of fluoropolymer endows micro/nanofibers with desirable amphiphobicity. The resultant MNFSs present high resilience, superior compressive fatigue resistance (5.7% residual strain at 1000th), low-temperature-resistant superelasticity (up to -196 °C), and unique washing-invariant superelasticity. Moreover, the fascinating structures of high porosity, high tortuosity, and small pores enable MNFSs both ultralight property (7.5 mg cm-3) and effective warmth retention (28.51 mW m-1 K-1). Additionally, the MNFSs possess remarkable antifouling, robust stability, and long service life. The work might provide an avenue to develop mechanically robust nanofibrous sponges for various applications.
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Affiliation(s)
- Hongyan Wu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Hang Cai
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
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25
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Wang C, Meng N, Babar AA, Gong X, Liu G, Wang X, Yu J, Ding B. Highly Transparent Nanofibrous Membranes Used as Transparent Masks for Efficient PM 0.3 Removal. ACS NANO 2022; 16:119-128. [PMID: 34870426 DOI: 10.1021/acsnano.1c09055] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Currently, the quest for highly transparent and flexible fibrous membranes with robust mechanical characteristics, high breathability, and good filtration performance is rapidly rising because of their potential use in the fields of electronics, energy, environment, medical, and health. However, it is still an extremely challenging task to realize transparent fibrous membranes due to serious surface light reflection and internal light scattering. Here, we report the design and development of a simple and effective topological structure to create porous, breathable, and high visible light transmitting fibrous membranes (HLTFMs). The resultant HLTFMs exhibit good optical performance (up to 90% transmittance) and high porosities (>80%). The formation of such useful structure with high light transmittance has been revealed by electric field simulation, and the mechanism of fibrous membrane structure to achieve high light transmittance has been proposed. Moreover, transparent masks have been prepared to evaluate the filtration performance and analyze their feasibility to meet requirement of facial recognition systems. The prepared masks display high transparency (>80%), low pressure drop (<100 Pa) and high filtration efficiency (>90%). Furthermore, the person wearing this mask can be successfully identified by facial recognition systems. Therefore, this work provides an idea for the development of transparent, breathable, and high-performance fibrous membranes.
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Affiliation(s)
- Chao Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Na Meng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Gaohui Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
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Manabe K, Nakano M, Norikane Y. Green Superlubricity Enabled by Only One Water Droplet on Plant Oil-Infused Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14878-14888. [PMID: 34894693 DOI: 10.1021/acs.langmuir.1c02689] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The increase in energy loss due to friction and the use of large amounts of lubricants to improve it are major challenges we face from a global environmental perspective. Pitcher-plant-inspired liquid-infused surfaces (LISs) are emerging super-repellent surfaces against liquids. However, their coefficient of friction (CoF) against solids is higher than that of conventional lubricant surfaces. Herein, we demonstrate superlubricity with a single water droplet placed on a LIS holding oleic acid, a component of plant oil. When a water droplet is placed on the fluid layer, the CoF under reciprocating and rotating friction is 0.012 and 0.0098, respectively. A force in the direction opposite to the loading due to the Laplace pressure on the droplet and an autonomous positional movement of the water accompanied by the optimization of surface energy maintain the fluid-lubrication state and prevent direct contact between the surface and the friction material, resulting in a decrease of the dependence of the CoF on the friction velocity. The key technology here will not only present a novel strategy for preparing LISs against solids but also serve as a step toward a sustainable green strategy for friction reduction and lubrication, which would greatly reduce energy loss and environmental degradation.
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Affiliation(s)
- Kengo Manabe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Miki Nakano
- Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
| | - Yasuo Norikane
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
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27
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Zhang R, Gong X, Wang S, Tian Y, Liu Y, Zhang S, Yu J, Ding B. Superelastic and Fire-Retardant Nano-/Microfibrous Sponges for High-Efficiency Warmth Retention. ACS APPLIED MATERIALS & INTERFACES 2021; 13:58027-58035. [PMID: 34821147 DOI: 10.1021/acsami.1c19850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Warmth retention equipment for personal cold protection is highly demanded in freezing weather; however, most present warmth retention materials suffer from high thermal conductivity, weak mechanical properties, and strong flammability, resulting in serious security risks. Herein, we report a facile strategy to fabricate nano-/microfibrous sponges with superelasticity, robust flame retardation, and effective warmth retention performance via direct electrospinning. The three-dimensional fluffy sponges with low volume density and high porosity are constructed by accurately regulating the relative humidity; meanwhile, the mechanically robust polyamide-imide nanofibers with high limit oxygen index (LOI) are innovatively introduced to improve the structural stability and flammability of the nano-/microfibrous sponges. Strikingly, the developed nano-/microfibrous sponges exhibit ultralight characteristics (6.9 mg cm-3), superelasticity (∼0% plastic deformation after 100 compression tests), effective flame retardant with LOI of 26.2%, and good heat preservation ability (thermal conductivity of 24.6 mW m-1 K-1). This work may shed light on designing superelastic and flame-retardant warmth retention materials for various applications.
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Affiliation(s)
- Ruihong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Sai Wang
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Yucheng Tian
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Yitao Liu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
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28
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Flexible ceramic nanofibrous sponges with hierarchically entangled graphene networks enable noise absorption. Nat Commun 2021; 12:6599. [PMID: 34782622 PMCID: PMC8593031 DOI: 10.1038/s41467-021-26890-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
Traffic noise pollution has posed a huge burden to the global economy, ecological environment and human health. However, most present traffic noise reduction materials suffer from a narrow absorbing band, large weight and poor temperature resistance. Here, we demonstrate a facile strategy to create flexible ceramic nanofibrous sponges (FCNSs) with hierarchically entangled graphene networks, which integrate unique hierarchical structures of opened cells, closed-cell walls and entangled networks. Under the precondition of independent of chemical crosslinking, high enhancement in buckling and compression performances of FCNSs is achieved by forming hierarchically entangled structures in all three-dimensional space. Moreover, the FCNSs show enhanced broadband noise absorption performance (noise reduction coefficient of 0.56 in 63-6300 Hz) and lightweight feature (9.3 mg cm-3), together with robust temperature-invariant stability from -100 to 500 °C. This strategy paves the way for the design of advanced fibrous materials for highly efficient noise absorption.
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29
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Zhou W, Gong X, Li Y, Si Y, Zhang S, Yu J, Ding B. Waterborne electrospinning of fluorine-free stretchable nanofiber membranes with waterproof and breathable capabilities for protective textiles. J Colloid Interface Sci 2021; 602:105-114. [PMID: 34118600 DOI: 10.1016/j.jcis.2021.05.171] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 12/24/2022]
Abstract
HYPOTHESIS Smart membranes with robust liquid water resistance and water vapor transmission capabilities have attracted growing attentions in personal protective equipment and environmental protection. However, current fluorine-free waterproof and breathable nanofibrous membranes are usually prepared through toxic solvent-based electrospinning, which raises great concerns about their environmental impacts. EXPERIMENTS We develop environmentally friendly fluorine-free polyurethane nanofibrous membranes with robust waterproof and breathable performances via waterborne electrospinning without post-coating treatment. The incorporation of the low surface energy long-chain alkyls and polycarbodiimide crosslinker imparts the interconnective porous channels with high hydrophobicity to waterborne fluorine-free polyurethane nanofibrous membranes. FINDINGS The waterborne fluorine-free nanofibrous membranes show high water contact angle of 137.1°, robust hydrostatic pressure of 35.9 kPa, desirable water vapor transmission rate of 4885 g m-2 d-1, excellent air permeability of 19.9 mm s-1, good tensile elongation of 372.4%, and remarkable elasticity of 56.9%, thus offering strong potential for protective textiles and leaving no toxic solvent residues. This work could also serve as a guide for the design of green and high-performance fibrous materials used for medical hygiene, wearable electronics, water desalination, and oil/water separation.
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Affiliation(s)
- Wen Zhou
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yang Li
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yang Si
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China.
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China.
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30
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Hang C, Ding L, Cheng S, Dong R, Qi J, Liu X, Liu Q, Zhang Y, Jiang X. A Soft and Absorbable Temporary Epicardial Pacing Wire. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101447. [PMID: 34302396 DOI: 10.1002/adma.202101447] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/18/2021] [Indexed: 06/13/2023]
Abstract
Existing temporary epicardial pacing wires (TPWs) are rigid and non-absorbable, such that they can cause severe complications after cardiac surgery. Here, a soft and absorbable temporary epicardial pacing wire (saTPW) for effectively correcting abnormal heart rates in a rabbit model, such as bradycardia and ventricular premature beat, is developed. The saTPW exhibits excellent conductivity, flexibility, cycling stability (>100 000 cycles), and less inflammatory response during two-month subcutaneous implantation in a rat model. The saTPW which consists of poly(l-lactide-co-ε-caprolactone) and liquid metal, can degrade about 13% (mass loss) in the rats over a two-month subcutaneous implantation. It can be absorbed over time in the body. The cytocompatibility and absorbability avoid secondary injuries caused by remaining wires which are permanently left in the body. The saTPW will provide a great platform for diagnosis and treatments in cardiovascular diseases by delivering the physiological signal and applying electrical stimulation for therapy.
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Affiliation(s)
- Chen Hang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Li Ding
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Shiyu Cheng
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
| | - Ruihua Dong
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Jie Qi
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Xiaoyan Liu
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Qian Liu
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Yan Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen, Guangdong, 518055, P. R. China
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
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Recent Advances on Properties and Utility of Nanomaterials Generated from Industrial and Biological Activities. CRYSTALS 2021. [DOI: 10.3390/cryst11060634] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Today is the era of nanoscience and nanotechnology, which find applications in the field of medicine, electronics, and environmental remediation. Even though nanotechnology is in its emerging phase, it continues to provide solutions to numerous challenges. Nanotechnology and nanoparticles are found to be very effective because of their unique chemical and physical properties and high surface area, but their high cost is one of the major hurdles to its wider application. So, the synthesis of nanomaterials, especially 2D nanomaterials from industrial, agricultural, and other biological activities, could provide a cost-effective technique. The nanomaterials synthesized from such waste not only minimize pollution, but also provide an eco-friendly approach towards the utilization of the waste. In the present review work, emphasis has been given to the types of nanomaterials, different methods for the synthesis of 2D nanomaterials from the waste generated from industries, agriculture, and their application in electronics, medicine, and catalysis.
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