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Ye Z, Fang T, Cong C, Chen K, Zhang D, Kong X, Wang Q, Liu S, Li M, Zhao B, Xia Z, Shang Y, Liu L, Shi E, Wei X, Cao A. Strong and Fatigue-Resistant Carbon Nanotube Composites Enabled by Amorphous/Crystalline Heterophase Shell. ACS NANO 2024. [PMID: 39189387 DOI: 10.1021/acsnano.4c05966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Lightweight materials with high strength and long cyclic lifespan are greatly demanded in practical applications, yet these properties are usually mutually exclusive. Here, we present a strong, lightweight, highly deformation-tolerant, and fatigue-resistant carbon nanotube (CNT) composite enabled by an amorphous/crystalline heterophase carbon shell. In particular, we obtain nanocrystallites with CNT-induced crystalline orientation uniformly embedded within an amorphous matrix by controlled thermal annealing. The heterophase carbon shell effectively alleviates the stress concentration and inhibits crack propagation, which renders our composite superior mechanical properties and high fatigue resistance (106 compression cycles at 20% strain with high stress of 144 kPa, or 5 × 105 cycles at 50% strain with stress up to 260 kPa). This study provides a deep understanding of amorphous-crystalline phase transition and insight into utilizing phase engineering to design and develop other high-performance functional materials such as structural materials and catalysis.
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Affiliation(s)
- Ziming Ye
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Tao Fang
- College of Engineering, Peking University, Beijing 100871, China
| | - Chaonan Cong
- College of Science, China Agricultural University, Beijing 100083, China
| | - Kun Chen
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Ding Zhang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaobing Kong
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Qi Wang
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Shizhuo Liu
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Meng Li
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Bo Zhao
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Zhiyuan Xia
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Yuanyuan Shang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Lei Liu
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Enzheng Shi
- School of Engineering, Westlake University, Hangzhou 310030, China
| | - Xiaoding Wei
- College of Engineering, Peking University, Beijing 100871, China
| | - Anyuan Cao
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
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2
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Chang X, Yang Y, Cheng X, Yin X, Yu J, Liu YT, Ding B. Multiphase Symbiotic Engineered Elastic Ceramic-Carbon Aerogels with Advanced Thermal Protection in Extreme Oxidative Environments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2406055. [PMID: 38829267 DOI: 10.1002/adma.202406055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Indexed: 06/05/2024]
Abstract
Elastic aerogels can dissipate aerodynamic forces and thermal stresses by reversible slipping or deforming to avoid sudden failure caused by stress concentration, making them the most promising candidates for thermal protection in aerospace applications. However, existing elastic aerogels face difficulties achieving reliable protection above 1500 °C in aerobic environments due to their poor thermomechanical stability and significantly increased thermal conductivity at elevated temperatures. Here, a multiphase sequence and multiscale structural engineering strategy is proposed to synthesize mullite-carbon hybrid nanofibrous aerogels. The heterogeneous symbiotic effect between components simultaneously inhibits ceramic crystalline coarsening and carbon thermal etching, thus ensuring the thermal stability of the nanofiber building blocks. Efficient load transfer and high interfacial thermal resistance at crystalline-amorphous phase boundaries on the microscopic scale, coupled with mesoscale lamellar cellular and locally closed-pore structures, achieve rapid stress dissipation and thermal energy attenuation in aerogels. This robust thermal protection material system is compatible with ultralight density (30 mg cm-3), reversible compression strain of 60%, extraordinary thermomechanical stability (up to 1600 °C in oxidative environments), and ultralow thermal conductivity (50.58 mW m-1 K-1 at 300 °C), offering new options and possibilities to cope with the harsh operating environments faced by space exploration.
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Affiliation(s)
- Xinyi Chang
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Yunfei Yang
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xiaota Cheng
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, 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
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Yi-Tao Liu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
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3
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Song J, Wang G, Chen L, Zhang C, Zan R, Wang Z, Rao Z, Fei L. Wide-temperature-range pressure sensing by an aramid nanofibers/reduced graphene oxide flakes composite aerogel. J Colloid Interface Sci 2024; 677:512-520. [PMID: 39106776 DOI: 10.1016/j.jcis.2024.07.231] [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: 05/20/2024] [Revised: 07/18/2024] [Accepted: 07/29/2024] [Indexed: 08/09/2024]
Abstract
Aerogel-based conductive materials have emerged as a major candidate for piezoresistive pressure sensors due to their excellent mechanical and electrical performance besides light-weighted and low-cost characteristics, showing great potential for applications in electronic skins, biomedicine, robot controlling and intelligent recognition. However, it remains a grand challenge for these piezoresistive sensors to achieve a high sensitivity across a wide working temperature range. Herein, we report a highly flexible and ultra-light composite aerogel consisting of aramid nanofibers (ANFs) and reduced graphene oxide flakes (rGOFs) for application as a high-performance pressure sensing material in a wide temperature range. By controlling the orientations of pores in the composite framework, the aerogel promotes pressure transfer by aligning its conductive channels. As a result, the ANFs/rGOFs aerogel-based piezoresistive sensor exhibits a high sensitivity of up to 7.10 kPa-1, an excellent stability over 12,000 cycles, and an ultra-wide working temperature range from -196 to 200 °C. It is anticipated that the ANFs/rGOFs composite aerogel can be used as reliable sensing materials in extreme environments.
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Affiliation(s)
- Jiapeng Song
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Guangren Wang
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Long Chen
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Chuchu Zhang
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Ruhao Zan
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Zhao Wang
- Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices, School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China.
| | - Zhenggang Rao
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Linfeng Fei
- School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, China.
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4
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Park SW, Li J, Weisensee PB. Development of a fully packaged passive thermal regulator. Sci Rep 2024; 14:16979. [PMID: 39043838 PMCID: PMC11266538 DOI: 10.1038/s41598-024-67758-4] [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: 11/20/2023] [Accepted: 07/15/2024] [Indexed: 07/25/2024] Open
Abstract
Thermal regulators are devices that can adopt either the role of a thermal insulator or a thermal conductor, depending on the thermal input conditions, and play an increasingly important role in thermal management systems. In this study, we developed and tested a new passive thermal regulator design that operates around room temperature and achieves high switching ratios. Our regulator is structurally integer, scalable, orientation-independent, resistant to vibration, and can be easily integrated into existing thermal management solutions. The working principle of the passive regulator is simple yet effective, whereby an aluminum plug attached to a bimetallic strip enters and exists a wedge-shaped gap between two conductors. We demonstrate a switching ratio of ≈ 50( - 8 + 34 ) :1 for a fully packaged prototype (≈ 320 (± 200):1 for a non-packaged regulator) operated in the open laboratory environment. Through geometric optimization using numerical simulations, we show that a switching ratio of ≈ 100( - 15 + 18 ) :1 can be easily obtained, which can be further increased by increasing the cross-sectional area of the input conductor, hence increasing the ON-state heat transfer rate. The OFF-state thermal performance is much less sensitive to the size of the conductor, making the device highly scalable.
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Affiliation(s)
- Seung Won Park
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, USA
| | - Junhui Li
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, USA
| | - Patricia B Weisensee
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, USA.
- Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, MO, USA.
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5
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Su Y, Li B, Wang Z, Legrand A, Aoyama T, Fu S, Wu Y, Otake KI, Bonn M, Wang HI, Liao Q, Urayama K, Kitagawa S, Huang L, Furukawa S, Gu C. Quasi-Homogeneous Photocatalysis in Ultrastiff Microporous Polymer Aerogels. J Am Chem Soc 2024; 146:15479-15487. [PMID: 38780095 DOI: 10.1021/jacs.4c03862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The development of efficient and low-cost catalysts is essential for photocatalysis; however, the intrinsically low photocatalytic efficiency as well as the difficulty in using and recycling photocatalysts in powder morphology greatly limit their practical performance. Herein, we describe quasi-homogeneous photocatalysis to overcome these two limitations by constructing ultrastiff, hierarchically porous, and photoactive aerogels of conjugated microporous polymers (CMPs). The CMP aerogels exhibit low density but high stiffness beyond 105 m2 s-2, outperforming most low-density materials. Extraordinary stiffness ensures their use as robust scaffolds for scaled photocatalysis and recycling without damage at the macroscopic level. A challenging but desirable reaction for direct deaminative borylation is demonstrated using CMP aerogel-based quasi-homogeneous photocatalysis with gram-scale productivity and record-high efficiency under ambient conditions. Combined terahertz and transient absorption spectroscopic studies unveil the generation of high-mobility free carriers and long-lived excitonic species in the CMP aerogels, underlying the observed superior catalytic performance.
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Affiliation(s)
- Yan Su
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, No. 381 Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Bo Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, PR China
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, PR China
| | - Zaoming Wang
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Alexandre Legrand
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
- Unité de Catalyse et Chimie du Solide (UCCS), CNRS, Centrale Lille, Université de Lille, Université d'Artois, UMR 8181, Lille F-59000, France
| | - Takuma Aoyama
- Department of Macromolecular Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shuai Fu
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55122, Germany
| | - Yishi Wu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing 100048, PR China
| | - Ken-Ichi Otake
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55122, Germany
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55122, Germany
- Nanophotonics, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, Utrecht 3584 CC, The Netherlands
| | - Qing Liao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing 100048, PR China
| | - Kenji Urayama
- Department of Material Chemistry, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Liangbin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, PR China
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Cheng Gu
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, No. 381 Wushan Road, Tianhe District, Guangzhou 510640, PR China
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, PR China
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6
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Wang Y, Zhang X, Liu S, Liu Y, Zhou Q, Zhu T, Miao YE, Willenbacher N, Zhang C, Liu T. Thermal-Rectified Gradient Porous Polymeric Film for Solar-Thermal Regulatory Cooling. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400102. [PMID: 38606728 DOI: 10.1002/adma.202400102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/19/2024] [Indexed: 04/13/2024]
Abstract
Solar-thermal regulation concerning thermal insulation and solar modulation is pivotal for cooling textiles and smart buildings. Nevertheless, a contradiction arises in balancing the demand to prevent external heat infiltration with the efficient dissipation of excess heat from enclosed spaces. Here, a concentration-gradient polymerization strategy is presented for fabricating a gradient porous polymeric film comprising interconnected polymeric microspheres. This method involves establishing an electric field-driven gradient distribution of charged crosslinkers in the precursor solution, followed by subsequent polymerization and freeze-drying processes. The resulting porous film exhibits a significant porosity gradient along its thickness, leading to exceptional unidirectional thermal insulation capabilities with a thermal rectification factor of 21%. The gradient porous film, with its thermal rectification properties, effectively reconciles the conflicting demands of diverse thermal conductivity for cooling unheated and spontaneously heated enclosed spaces. Consequently, the gradient porous film demonstrates remarkable enhancements in solar-thermal management, achieving temperature reductions of 3.0 and 4.1 °C for unheated and spontaneously heated enclosed spaces, respectively, compared to uniform porous films. The developed gradient-structured porous film thus holds promise for the development of thermal-rectified materials tailored to regulate solar-thermal conditions within enclosed environments.
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Affiliation(s)
- Yufeng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Xiaobo Zhang
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, 999077, P.R. China
| | - Song Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Ying Liu
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, 999077, P.R. China
| | - Qisen Zhou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Tianyi Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Yue-E Miao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Norbert Willenbacher
- Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131, Karlsruhe, Germany
| | - Chao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P.R. China
| | - Tianxi Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
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7
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Guan H, Zhang C, Tu K, Dai X, Wang X, Wang X. Wet-Stable Lamellar Wood Sponge with High Elasticity and Fatigue Resistance Enabled by Chemical Cross-Linking. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18173-18183. [PMID: 38557017 DOI: 10.1021/acsami.4c01173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The excessive consumption of fossil-based plastics and the associated environmental concerns motivate the increasing exploitation of sustainable biomass-based materials for advanced applications. Natural wood-derived lamellar wood sponges via a top-down approach have recently attracted significant attention; however, the insufficient compressive fatigue resistance and lack of structural stability in water limit their wide applications. Here, we report a facile chemical cross-linking strategy to tackle these challenges, by which the cellulose fibrils in the lamellas are covalently bridged to enhance their connectivity. The cross-linked wood sponges demonstrate high compressibility up to 70% strain and exceptional compressive fatigue resistance (∼5% plastic deformation after 10,000 cycles at 50% strain). The interfibrillar cross-linking inhibits the swelling of cellulose fibrils and preserves the arch-shaped lamellas of the sponge in water, endowing the wood sponge with excellent wet stability. Such highly elastic and wet-stable lamellar wood sponges offer a sustainable alternative to synthetic polymer-based sponges used in diverse applications.
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Affiliation(s)
- Hao Guan
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Chi Zhang
- Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Kunkun Tu
- Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
- Jiangsu Key Laboratory of Coal-Based Greenhouse Gas Control and Utilization, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China
| | - Xinjian Dai
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Xin Wang
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Xiaoqing Wang
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
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8
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Wu B, Qi Q, Liu L, Liu Y, Wang J. Wearable Aerogels for Personal Thermal Management and Smart Devices. ACS NANO 2024; 18:9798-9822. [PMID: 38551449 DOI: 10.1021/acsnano.4c00967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Extreme climates have become frequent nowadays, causing increased heat stress in human daily life. Personal thermal management (PTM), a technology that controls the human body's microenvironment, has become a promising strategy to address heat stress. While effective in ordinary environments, traditional high-performance fibers, such as ultrafine, porous, highly thermally conductive, and phase change materials, fall short when dealing with harsh conditions or large temperature fluctuations. Aerogels, a third-generation superinsulation material, have garnered extensive attention among researchers for their thermal management applications in building energy conservation, transportation, and aerospace, attributed to their extremely low densities and thermal conductivity. While aerogels have historically faced challenges related to weak mechanical strength and limited secondary processing capacity, recent advancements have witnessed notable progress in the development of wearable aerogels for PTM. This progress underscores their potential applications within extremely harsh environments, serving as self-powered smart devices and sensors. This Review offers a timely overview of wearable aerogels and their PTM applications with a particular focus on their wearability and suitability. Finally, the discussion classifies five types of PTM applications based on aerogel function: thermal insulation, heating, cooling, adaptive regulation (involving thermal insulation, heating, and cooling), and utilization of aerogels as wearable smart devices.
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Affiliation(s)
- Bing Wu
- Emergency Research Institute, Chinese Institute of Coal Science, Beijing 100013, P. R. China
| | - Qingjie Qi
- Emergency Research Institute, Chinese Institute of Coal Science, Beijing 100013, P. R. China
| | - Ling Liu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yingjie Liu
- Emergency Research Institute, Chinese Institute of Coal Science, Beijing 100013, P. R. China
| | - Jin Wang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, P. R. China
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Yan W, Qing Y, Li Z, Li L, Luo S, Wu Y, Chen D, Wu Y, Tian C. Construction of Nanofibrillar Networked Wood Aerogels Derived from Typical Softwood and Hardwood: A Comparative Study on the In Situ Formation Mechanism of Nanofibrillar Networks. Molecules 2024; 29:938. [PMID: 38474450 DOI: 10.3390/molecules29050938] [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: 12/19/2023] [Revised: 02/15/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
The construction of networks within natural wood (NW) lumens to produce porous wood aerogels (WAs) with fascinating characteristics of being lightweight, flexible, and porous is significant for the high value-added utilization of wood. Nonetheless, how wood species affect the structure and properties of WAs has not been comprehensively investigated. Herein, typical softwood of fir and hardwoods of poplar and balsa are employed to fabricate WAs with abundant nanofibrillar networks using the method of lignin removal and nanofibril's in situ regeneration. Benefiting from the avoidance of xylem ray restriction and the exposure of the cellulose framework, hardwood has a stronger tendency to form nanofibrillar networks compared to softwood. Specifically, a larger and more evenly distributed network structure is displayed in the lumens of balsa WAs (WA-3) with a low density (59 kg m-3), a high porosity (96%), and high compressive properties (strain = 40%; maximum stress = 0.42 MPa; height retention = 100%) because of the unique structure and properties of WA-3. Comparatively, the specific surface area (SSA) exhibits 25-, 27-, and 34-fold increments in the cases of fir WAs (WA-1), poplar WAs (WA-2), and WA-3. The formation of nanofibrillar networks depends on the low-density and thin cell walls of hardwood. This work offers a foundation for investigating the formation mechanisms of nanonetworks and for expanding the potential applications of WAs.
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Affiliation(s)
- Wenjing Yan
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yan Qing
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zhihan Li
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lei Li
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Sha Luo
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ying Wu
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Deng Chen
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yiqiang Wu
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Cuihua Tian
- College of Materials Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
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10
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Hu P, Wu F, Ma B, Luo J, Zhang P, Tian Z, Wang J, Sun Z. Robust and Flame-Retardant Zylon Aerogel Fibers for Wearable Thermal Insulation and Sensing in Harsh Environment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310023. [PMID: 38029344 DOI: 10.1002/adma.202310023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/28/2023] [Indexed: 12/01/2023]
Abstract
The exceptional lightweight, highly porous, and insulating properties of aerogel fibers make them ideal for thermal insulation. However, current aerogel fibers face limitations due to their low resistance to harsh environments and a lack of intelligent responses. Herein, a universal strategy for creating polymer aerogel fibers using crosslinked nanofiber building blocks is proposed. This approach combines controlled proton absorption gelation spinning with a heat-induced crosslinking process. As a proof-of-concept, Zylon aerogel fibers that exhibited robust thermal stability (up to 650 °C), high flame retardancy (limiting oxygen index of 54.2%), and extreme chemical resistance are designed and synthesized. These fibers possess high porosity (98.6%), high breaking strength (8.6 MPa), and low thermal conductivity (0.036 W m-1 K-1 ). These aerogel fibers can be knotted or woven into textiles, utilized in harsh environments (-196-400 °C), and demonstrate sensitive self-powered sensing capabilities. This method of developing aerogel fibers expands the applications of high-performance polymer fibers and holds great potential for future applications in wearable smart protective fabrics.
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Affiliation(s)
- Peiying Hu
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Fushuo Wu
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Bingjie Ma
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jie Luo
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Peigen Zhang
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Zhihua Tian
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Jin Wang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - ZhengMing Sun
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
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11
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Zhang M, Fan Y, Wang N, Gao H, Zhang L, Zhao Y, Liu L. Silver nanowire-infused carbon aerogel: A multifunctional nanocellulose-derived material for personal thermal management. Carbohydr Polym 2024; 324:121470. [PMID: 37985037 DOI: 10.1016/j.carbpol.2023.121470] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 11/22/2023]
Abstract
Personal thermal management (PTM) textiles for outdoor activities have become increasingly important for addressing energy consumption and thermal comfortable. Cellulose nanofiber (CNF) aerogels have emerged as promising candidates for PTM due to the eco-friendliness, lightweight, and low thermal conductivity. However, the singular insulation capability may not be sufficient to accommodate the diverse and harsh outdoor conditions. Herein, we carbonized CNF-based aerogel to fabricate anisotropic carbon aerogels, and then incorporated silver nanowires (AgNWs) upon onside to fabricate the dual-function AgNWs/carbon aerogel. The resulting material inherits high porosity (99.3 %), high surface area (503.2 m2/g), low density (7.08 mg/cm3), and low thermal conductivity (18.2 mW·m-1·k-1 in the axial direction) to act as an ideal thermal insulator. The AgNWs coating side demonstrates low IR-emissivity (17.6 % at 7-14 μm) and the carbon aerogel side has high solar absorptivity (91.97 %). Moreover, the AgNWs/carbon aerogel shows Joule heating performance (∆T = 44.5 °C within 3 min at 5 V). The multi-heating modes enabling self-adaptable thermal comfortable under various harsh environment. Additionally, the material's breathability, permeability, and electromagnetic shielding characteristics also make it suitable candidate for advanced wearable textiles for PTM.
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Affiliation(s)
- Meiling Zhang
- College of Textiles, Donghua University, Shanghai 201620, China
| | - Yinan Fan
- College of Textiles, Donghua University, Shanghai 201620, China
| | - Ni Wang
- College of Textiles, Donghua University, Shanghai 201620, China
| | - Hongguo Gao
- Shandong Technology Innovation Center of Ecological Textile, Shangdong 256623, China
| | - Lei Zhang
- Shandong Technology Innovation Center of Ecological Textile, Shangdong 256623, China
| | - Yanjiao Zhao
- College of Textiles, Donghua University, Shanghai 201620, China
| | - Lifang Liu
- College of Textiles, Donghua University, Shanghai 201620, China; Shandong Technology Innovation Center of Ecological Textile, Shangdong 256623, China.
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12
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Dong H, Li X, Cai Z, Wei S, Fan S, Ge Y, Li X, Wu Y. Strong, Lightweight, and Shape-Memory Bamboo-Derived All-Cellulose Aerogels for Versatile Scaffolds of Sustainable Multifunctional Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305857. [PMID: 37705126 DOI: 10.1002/smll.202305857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/06/2023] [Indexed: 09/15/2023]
Abstract
Strong, lightweight, and shape-memory cellulose aerogels have great potential in multifunctional applications. However, achieving the integration of these features into a cellulose aerogel without harsh chemical modifications and the addition of mechanical enhancers remains challenging. In this study, a strong, lightweight, and water-stimulated shape-memory all-cellulose aerogel (ACA) is created using a combination strategy of partial dissolution and unidirectional freezing from bamboo. Benefiting from the firm architecture of cellulose microfibers bridging cellulose nanofibers /regenerated cellulose aggregated layers and the bonding of different cellulose crystal components (cellulose Iβ and cellulose II), the ACA, with low density (60.74 mg cm-3 ), possesses high compressive modulus (radial section: 1.2 MPa, axial section: 0.96 MPa). Additionally, when stimulated with water, the ACA exhibits excellent shape-memory features, including highly reversible compression-resilience and instantaneous fold-expansion behaviors. As a versatile scaffold, ACA can be integrated with hydroxyapatite, carboxyl carbon nanotubes, and LiCl, respectively, via a simple impregnation method to yield functionalized cellulose composites for applications in thermal insulation, electromagnetic interference shielding, and piezoresistive sensors. This study provides inspiration and a reliable strategy for the elaborately structural design of functional cellulose aerogels endows application prospects in various multifunction opportunities.
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Affiliation(s)
- Hongping Dong
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Xiazhen Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Zhiyong Cai
- USDA Forest Products Laboratory, Madison, WI, 53726-2398, USA
| | - Song Wei
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Shutong Fan
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Yanglin Ge
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Xianjun Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China
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13
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Li L, Yang G, Lyu J, Sheng Z, Ma F, Zhang X. Folk arts-inspired twice-coagulated configuration-editable tough aerogels enabled by transformable gel precursors. Nat Commun 2023; 14:8450. [PMID: 38114508 PMCID: PMC10730912 DOI: 10.1038/s41467-023-44156-4] [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: 07/14/2023] [Accepted: 12/01/2023] [Indexed: 12/21/2023] Open
Abstract
Aerogels, as famous lightweight and porous nanomaterials, have attracted considerable attention in various emerging fields in recent decades, however, both low density and weak mechanical performance make their configuration-editing capability challenging. Inspired by folk arts, herein we establish a highly efficient twice-coagulated (TC) strategy to fabricate configuration-editable tough aerogels enabled by transformable gel precursors. As a proof of concept, aramid nanofibers (ANFs) and polyvinyl alcohol (PVA) are selected as the main components of aerogel, among which PVA forms a flexible configuration-editing gel network in the first coagulation process, and ANF forms a configuration-locking gel network in the second coagulation process. TC strategy guarantees the resulting aerogels with both high toughness and feasible configuration editing capability individually or simultaneously. Altogether, the resulting tough aerogels with special configuration through soft to hard modulation provide great opportunities to break through the performance limits of the aerogels and expand application areas of aerogels.
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Affiliation(s)
- Lishan Li
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, PR China
| | - Guandu Yang
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, PR China
- Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, PR China
| | - Jing Lyu
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, PR China
| | - Zhizhi Sheng
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, PR China
| | - Fengguo Ma
- Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, PR China
| | - Xuetong Zhang
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, PR China.
- Division of Surgery & Interventional Science, University College London, London, UK.
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14
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Xue T, Zhu C, Yu D, Zhang X, Lai F, Zhang L, Zhang C, Fan W, Liu T. Fast and scalable production of crosslinked polyimide aerogel fibers for ultrathin thermoregulating clothes. Nat Commun 2023; 14:8378. [PMID: 38104160 PMCID: PMC10725485 DOI: 10.1038/s41467-023-43663-8] [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: 06/26/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023] Open
Abstract
Polyimide aerogel fibers hold promise for intelligent thermal management fabrics, but their scalable production faces challenges due to the sluggish gelation kinetics and the weak backbone strength. Herein, a strategy is developed for fast and scalable fabrication of crosslinked polyimide (CPI) aerogel fibers by wet-spinning and ambient pressure drying via UV-enhanced dynamic gelation strategy. This strategy enables fast sol-gel transition of photosensitive polyimide, resulting in a strongly-crosslinked gel skeleton that effectively maintains the fiber shape and porous nanostructure. Continuous production of CPI aerogel fibers (length of hundreds of meters) with high specific modulus (390.9 kN m kg-1) can be achieved within 7 h, more efficiently than previous methods (>48 h). Moreover, the CPI aerogel fabric demonstrates almost the same thermal insulating performance as down, but is about 1/8 the thickness of down. The strategy opens a promisingly wide-space for fast and scalable fabrication of ultrathin fabrics for personal thermal management.
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Affiliation(s)
- Tiantian Xue
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China
| | - Chenyu Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China
| | - Dingyi Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China
| | - Xu Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Feili Lai
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Longsheng Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Chao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China
| | - Wei Fan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
| | - Tianxi Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
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15
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Zhang X, Yu J, Zhao C, Si Y. Engineering Covalent Heterointerface Enables Superelastic Amorphous SiC Meta-Aerogels. ACS NANO 2023; 17:21813-21821. [PMID: 37909358 DOI: 10.1021/acsnano.3c07780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
SiC is an exceptionally competitive material for porous ceramics owing to its excellent high-temperature mechanical stability. However, SiC porous ceramics suffer from serious structural damage and mechanical degradation under thermal shock due to the hard SiC microstructure and weak bonding networks. Here, we report a scalable interface-engineering protocol to reliably assemble flexible amorphous SiC nanofibers into lamellar cellular meta-aerogels by designing a covalent heterointerface. This approach allows the construction of a strong binding architecture within the resilient nanofiber skeleton network, thereby achieving structurally stable, mechanically robust, and durable SiC porous ceramics. The optimized amorphous SiC meta-aerogels (a-SiC MAs) exhibit the integrated properties of ultralight with a density of 4.84 mg cm-3, temperature-invariant superelastic, fatigue-resistant at low 5% permanent deformation after 1000 cycles of compression, and ultralow thermal conductivity (19 mW m-1 K-1). These characteristics provide a-SiC MAs potential application value in the thermal protection field.
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Affiliation(s)
- Xuan Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Cunyi Zhao
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Yang Si
- 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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16
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Zhou J, Chen L, Wu J, Lu Z, Liu F, Chen X, Xue P, Li C, Wei L, Wu G, Li Q, Zhang Q. High-Sensitivity Self-Powered Photodetector Fibers Using Hierarchical Heterojunction Photoelectrodes Enable Wearable Amphibious Optoelectronic Textiles. NANO LETTERS 2023. [PMID: 37962986 DOI: 10.1021/acs.nanolett.3c03851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Fiber-shaped photodetectors (FPDs) with multidirectional light absorption properties offer exciting opportunities for intelligent optoelectronic textiles. However, achieving FPDs capable of working in ampule environments, especially with high sensitivity, remains a fundamental challenge. Here, quasi-solid-state twisted-fiber photoelectrochemical photodetectors (FPPDs) consisting of photoanode, gel electrolyte, and counter electrode are successfully assembled. In situ decorated n-type one-dimensional (1D) TiO2 nanowire arrays with 2D Ni-Fe metal-organic framework (NiFeMOF) nanosheets serve as hierarchical heterojunction photoanodes, thereby optimizing carrier transfer dynamics at the photoanode/electrolyte interface. As expected, the resulting self-powered FPPD exhibits 88.6 mA W-1 high responsiveness and a < 30 ms fast response time. Significantly, our FPPD can operate in both terrestrial and aquatic environments thanks to its intrinsic ionic properties, making it a versatile tool for detecting ultraviolet light on land and facilitating optical communication underwater. These high-sensitivity self-powered FPPDs with hierarchical heterojunction photoelectrodes hold promise for the development of wearable amphibious optoelectronic textiles.
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Affiliation(s)
- Jianxian Zhou
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
- University of Science and Technology of China, Hefei 230026, China
| | - Long Chen
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jiajun Wu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Zecheng Lu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Fan Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Xuedan Chen
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Pan Xue
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chunsheng Li
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Lei Wei
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Guan Wu
- National Engineering Lab for Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Qingwen Li
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
- University of Science and Technology of China, Hefei 230026, China
| | - Qichong Zhang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
- University of Science and Technology of China, Hefei 230026, China
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17
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Gao F, Tong Z, Xiao W, Liu Q, Lu J, Hou Y, He Q, Gao X, Cheng D, Zhan X, Ma Y, Zhang Q. Structural Engineering of Hierarchical Aerogels Hybrid Networks for Efficient Thermal Comfort Management and Versatile Protection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301164. [PMID: 36919943 DOI: 10.1002/smll.202301164] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/20/2023] [Indexed: 06/18/2023]
Abstract
In recent years, growing concerns regarding energy efficiency and heat mitigation, along with the critical goal of carbon neutrality, have drawn human attention to the zero-energy-consumption cooling technique. Passive daytime radiative cooling (PDRC) can be an invaluable tool for combating climate change by dispersing ambient heat directly into outer space instead of just transferring it across the surface. Although significant progress has been made in cooling mechanisms, materials design, and application exploration, PDRC faces challenges regarding functionality, durability, and commercialization. Herein, a silica nanofiber aerogels (SNAs) functionalized poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-HFP)) membrane (SFP membrane), inspired by constructional engineering is constructed. As-prepared membranes with flexible network structure combined hierarchical structure design and practicability principal. As the host material for thermal comfort management (TCM) and versatile protection, the SFP membrane features a large surface area, porous structure, and a robust skeleton that can render excellent mechanical properties. Importantly, the SFP membrane can keep exceptional solar reflectivity (0.95) and strong mid-infrared emittance (0.98) drop the temperature to 12.5 °C below ambient and 96 W m-2 cooling power under typical solar intensities over 910 W m-2 . This work provides a promising avenue for high performance aerogel membranes that can be created for use in a wide variety of applications.
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Affiliation(s)
- Feng Gao
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zheming Tong
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Weiqiang Xiao
- Research department of technology center, Zhejiang China Tobacco Industry Co., Ltd, Hangzhou, 310027, China
| | - Quan Liu
- Special polymer research institute, Quzhou Research Institute Zhejiang University, Quzhou, 324000, China
| | - Jianguo Lu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yang Hou
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
- Special polymer research institute, Quzhou Research Institute Zhejiang University, Quzhou, 324000, China
| | - Qinggang He
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Gao
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Dangguo Cheng
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
- Special polymer research institute, Quzhou Research Institute Zhejiang University, Quzhou, 324000, China
| | - Xiaoli Zhan
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
- Special polymer research institute, Quzhou Research Institute Zhejiang University, Quzhou, 324000, China
| | - Yaoguang Ma
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310058, China
| | - Qinghua Zhang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou, 310027, China
- Special polymer research institute, Quzhou Research Institute Zhejiang University, Quzhou, 324000, China
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