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Li B, Xu F, Guan T, Li Y, Sun J. Self-Adhesive Self-Healing Thermochromic Ionogels for Smart Windows with Excellent Environmental and Mechanical Stability, Solar Modulation, and Antifogging Capabilities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211456. [PMID: 36848671 DOI: 10.1002/adma.202211456] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/08/2023] [Indexed: 05/19/2023]
Abstract
Current thermochromic materials used in smart windows still face challenges, such as poor mechanical and environmental stability, unsatisfactory solar modulation capacity, and low transparency. Herein, the first self-adhesive self-healing thermochromic ionogels with excellent mechanical and environmental stability, antifogging capability, transparency, and solar modulation capability by loading binary ionic liquids (ILs) into rational-designed self-healing poly(urethaneurea) with acylsemicarbazide (ASCZ) moieties that have reversible and multiple hydrogen bonds are reported and their feasibility as smart windows with reliability and long service life is demonstrated. The self-healing thermochromic ionogels can switch between transparent and opaque without leakage or shrinkage, by the constrained reversible phase separation of ILs within the ionogels. The ionogels have the highest transparency and solar modulation capability among reported thermochromic materials and such excellent solar modulation capability can be well maintained after undergoing 1000 transitions, stretches, and bends, and storage at -30 °C, 60 °C, 90% RH, and vacuum environment for 2 months. The formation of high-density hydrogen bonds among the ASCZ moieties contributes to the excellent mechanical strength of the ionogels and allows the thermochromic ionogels to spontaneously heal their damages and be fully recycled at room temperature without the loss of thermochromic capabilities.
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Affiliation(s)
- Bing Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Fuchang Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Tingting Guan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yang Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Junqi Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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2
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Zhang Z, Zhang L, Zhou Y, Cui Y, Chen Z, Liu Y, Li J, Long Y, Gao Y. Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives. Chem Rev 2023. [PMID: 37053573 DOI: 10.1021/acs.chemrev.2c00762] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.
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Affiliation(s)
- Zongtao Zhang
- School of Materials Science and Engineering, Zhengzhou University, Kexue Avenue 100, Zhengzhou 450001, China
| | - Liangmiao Zhang
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Yang Zhou
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
| | - Yuanyuan Cui
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Zhang Chen
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Yinping Liu
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
| | - Jin Li
- School of Materials Science and Engineering, Zhengzhou University, Kexue Avenue 100, Zhengzhou 450001, China
| | - Yi Long
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
- Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Yanfeng Gao
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
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3
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Self-rolling of vanadium dioxide nanomembranes for enhanced multi-level solar modulation. Nat Commun 2022; 13:7819. [PMID: 36535951 PMCID: PMC9763237 DOI: 10.1038/s41467-022-35513-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Thermochromic window develops as a competitive solution for carbon emissions due to comprehensive advantages of its passivity and effective utilization of energy. How to further enhance the solar modulation ([Formula: see text]) of thermochromic windows while ensuring high luminous transmittance ([Formula: see text]) becomes the latest challenge to touch the limit of energy efficiency. Here, we show a smart window combining mechanochromism with thermochromism by self-rolling of vanadium dioxide (VO2) nanomembranes to enhance multi-level solar modulation. The mechanochromism is introduced by the temperature-controlled regulation of curvature of rolled-up smart window, which benefits from effective strain adjustment in VO2 nanomembranes upon the phase transition. Under geometry design and optimization, the rolled-up smart window with high [Formula: see text] and [Formula: see text] is achieved for the modulation of indoor temperature self-adapted to seasons and climate. Furthermore, such rolled-up smart window enables high infrared reflectance after triggered phase transition and acts as a smart lens protective cover for strong radiation. This work supports the feasibility of self-rolling technology in smart windows and lens protection, which promises broad interest and practical applications of self-adapting devices and systems for smart building, intelligent sensors and actuators with the perspective of energy efficiency.
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4
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Dai M, Zhao J, Zhang Y, Li H, Zhang L, Liu Y, Ye Z, Zhu S. Dual-Responsive Hydrogels with Three-Stage Optical Modulation for Smart Windows. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53314-53322. [PMID: 36382563 DOI: 10.1021/acsami.2c16319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Since room temperature management consumes a large amount of building energy, thermochromic smart windows have been extensively used for temperature regulation and energy management. However, the development of the smart window is still limited by its simple thermochromic performance, unreasonable thermochromic temperature, and the lack of additional stimulation conditions. In this work, a dual-responsive hydrogel was developed by introducing sodium dodecyl sulfate (SDS) and sodium chloride into the cross-linking network of poly(N-isopropylacrylamide) (PNIPAM) and polyacrylamide (PAM) for energy-saving and privacy protection. By controlling the temperature from low (<15 °C) to medium (15-28 °C) to high (>28 °C), the dual-responsive hydrogel achieved a reversible three-stage transition of opaque-transparent-translucent. The hydrogel exhibited a satisfactory solar modulation ability (Tlum = 80.3%, ΔTsol,15-18°C = 72.9%, ΔTsol,18-35°C = 42.7%) and effective IR and UV shielding at high (or low) temperatures. Moreover, compared with traditional windows, smart windows made of dual-responsive hydrogels could offer better thermal insulation and heat preservation. The electrochromic properties of the dual-responsive hydrogel presented a facile strategy to meet the needs of different situations. The dual-responsive hydrogel features energy-saving, privacy protection, three-stage optical modulation, and multistimulus responsiveness, making it an ideal smart window candidate.
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Affiliation(s)
- Mingyun Dai
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Jian Zhao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Yadong Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Haijun Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Leping Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Ying Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian116023, China
| | - Zhangying Ye
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
| | - Songming Zhu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, China
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5
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Xue Y, Yin S. Element doping: a marvelous strategy for pioneering the smart applications of VO 2. NANOSCALE 2022; 14:11054-11097. [PMID: 35900045 DOI: 10.1039/d2nr01864k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Smart materials are leading the future of materials by virtue of their autonomous response behavior to external stimuli; it is widely believed their development and application will bring a new revolution. Among them, vanadium dioxide (VO2) is a special one showing a unique multi-stimulus responsive metal-insulator transition (MIT) accompanied by a structural phase transition (SPT) with striking changes of physical properties including optical, electrical and thermal properties, etc., making it ideal for smart windows, micro-bolometers, actuators, etc. Since the attractive performances of VO2 are rooted in MIT behavior (coupled with SPT), element doping becomes a powerful tool in tailoring VO2 performance. Oriented on the practical requirements, element-doped VO2 is more promising and competitive in terms of performance, prospect, and cost. Here we focus specifically on element-doped VO2, the recent progress and potential challenges of which are discussed. We devote attention to the crucial roles of element doping in modulating the properties and driving the practicality of VO2, aiming to inspire current research to pioneer new applications of VO2.
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Affiliation(s)
- Yibei Xue
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Shu Yin
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan.
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Feng YQ, Lv ML, Yang M, Ma WX, Zhang G, Yu YZ, Wu YQ, Li HB, Liu DZ, Yang YS. Application of New Energy Thermochromic Composite Thermosensitive Materials of Smart Windows in Recent Years. Molecules 2022; 27:molecules27051638. [PMID: 35268739 PMCID: PMC8912046 DOI: 10.3390/molecules27051638] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 11/16/2022] Open
Abstract
Thermochromic smart windows technology can intelligently regulate indoor solar radiation by changing indoor light transmittance in response to thermal stimulation, thus reducing energy consumption of the building. In recent years, with the development of new energy-saving materials and the combination with practical technology, energy-saving smart windows technology has received more and more attention from scientific research. Based on the summary of thermochromic smart windows by Yi Long research groups, this review described the applications of thermal responsive organic materials in smart windows, including poly(N-isopropylacrylamide) (PNIPAm) hydrogels, hydroxypropyl cellulose (HPC) hydrogels, ionic liquids and liquid crystals. Besides, the mechanism of various organic materials and the properties of functional materials were also introduced. Finally, opportunities and challenges relating to thermochromic smart windows and prospects for future development are discussed.
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Affiliation(s)
- Yu-Qin Feng
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Mei-Ling Lv
- Department of Mechanical Electricity, Wuhan Instrument and Electronic Technical School, Wuhan 430074, China;
| | - Ming Yang
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Wen-Xia Ma
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Gang Zhang
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Yun-Zi Yu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Ya-Qi Wu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - Hai-Bo Li
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
| | - De-Zheng Liu
- Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang 441053, China
- Correspondence: (D.-Z.L.); (Y.-S.Y.)
| | - Yong-Sheng Yang
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, School of Chemistry and Engineering, Wuhan Textile University, 1 Textile Road, Wuhan 430073, China; (Y.-Q.F.); (M.Y.); (W.-X.M.); (G.Z.); (Y.-Z.Y.); (Y.-Q.W.); (H.-B.L.)
- Correspondence: (D.-Z.L.); (Y.-S.Y.)
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7
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Niu Y, Zhou Y, Du D, Ouyang X, Yang Z, Lan W, Fan F, Zhao S, Liu Y, Chen S, Li J, Xu Q. Energy Saving and Energy Generation Smart Window with Active Control and Antifreezing Functions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105184. [PMID: 35014220 PMCID: PMC8867198 DOI: 10.1002/advs.202105184] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 06/07/2023]
Abstract
Windows are the least energy efficient part of the buildings, as building accounts for 40% of global energy consumption. Traditional smart windows can only regulate solar transmission, while all the solar energy on the window is wasted. Here, for the first time, the authors demonstrate an energy saving and energy generation integrated smart window (ESEG smart window) in a simple way by combining louver structure solar cell, thermotropic hydrogel, and indium tin oxides (ITO) glass. The ESEG smart window can achieve excellent optical properties with ≈90% luminous transmission and ≈54% solar modulation, which endows excellent energy saving performance. The outstanding photoelectric conversion efficiency (18.24%) of silicon solar cells with louver structure gives the smart window excellent energy generation ability, which is more than 100% higher than previously reported energy generation smart window. In addition, the solar cell can provide electricity to for ITO glass to turn the transmittance of hydrogel actively, as well as the effect of antifreezing. This work offers an insight into the design and preparation together with a disruptive strategy of easy fabrication, good uniformity, and scalability, which opens a new avenue to realize energy storage, energy saving, active control, and antifreezing integration in one device.
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Affiliation(s)
- Yingchun Niu
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Yang Zhou
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Daxue Du
- School of Environment and Chemical EngineeringYanshan UniversityQinhuangdao066004China
| | - Xiangcheng Ouyang
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Ziji Yang
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Wenjie Lan
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Fan Fan
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Sisi Zhao
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Yinping Liu
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Siyuan Chen
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Jiapeng Li
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
| | - Quan Xu
- State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China
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8
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Shahzad MK, Abbas Manj RZ, Abbas G, Laghari RA, Akhtar SS, Khan MA, Tahir MB, Znaidia S, Alzaid M. Influence of VO 2 based structures and smart coatings on weather resistance for boosting the thermochromic properties of smart window applications. RSC Adv 2022; 12:30985-31003. [PMID: 36349013 PMCID: PMC9619487 DOI: 10.1039/d2ra04661j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022] Open
Abstract
Vanadium dioxide (VO2)-based energy-saving smart films or coatings aroused great interest in scientific research and industry due to the reversible crystalline structural transition of VO2 from the monoclinic to tetragonal phase around room temperature, which can induce significant changes in transmittance and reflectance in the infrared (IR) range. However, there are still some obstacles for commercial application of VO2-based films or coatings in our daily life, such as the high phase transition temperature (68 °C), low luminous transmittance, solar modulation ability, and poor environmental stability. Particularly, due to its active nature chemically, VO2 is prone to gradual oxidation, causing deterioration of optical properties during very long life span of windows. In this review, the recent progress in enhancing the thermochromic properties of VO2-hybrid materials especially based on environmental stability has been summarized for the first time in terms of structural modifications such as core–shell structures for nanoparticles and nanorods and thin-films with single layer, layer-by-layer, and sandwich-like structures due to their excellent results for improving environmental stability. Moreover, future development trends have also been presented to promote the goal of commercial production of VO2 smart coatings. VO2 based energy saving smart coatings are of great interest in research and industry due to the reversible crystalline structural transition of VO2 which can induce significant transmittance and reflectance changes in the infrared range.![]()
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Affiliation(s)
- Muhammad Khuram Shahzad
- Institute of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Rana Zafar Abbas Manj
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Ghulam Abbas
- Department of Physics, Faisalabad Campus, Riphah International University, Pakistan
| | - Rashid Ali Laghari
- Interdisciplinary Research Center for Intelligent Manufacturing and Robotics, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Syed Sohail Akhtar
- Interdisciplinary Research Center for Intelligent Manufacturing and Robotics, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
- Mechanical Engineering Department, King Fahad University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Aslam Khan
- Institute of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Muhammad Bilal Tahir
- Institute of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Sami Znaidia
- College of Sciences and Arts in Mahayel Asir, Department of Physics, King Khalid University, Abha, Saudi Arabia
- Laboratoire de Recherche (LR 18ES19), Synthese Asymetrique et Ingenierie Moleculaire de Materiaux Organiques pour l’Electroniques Organiques, Faculte des Sciences de Monastir, Universite de Monastir, 5000, Tunisia
| | - Meshal Alzaid
- Physics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia
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9
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Guo X, Tan Y, Hu Y, Zafar Z, Liu X, Feng L, Zou J. Effect of microplate size on the semiconductor–metal transition in VO 2 thin films. NEW J CHEM 2022. [DOI: 10.1039/d2nj01324j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The degree of changes in resistivity (Δρ) becomes more prominent as the VO2 film microplate size grows, which is primarily attributed to a reduced probability of electron scattering with decreasing grain boundary density.
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Affiliation(s)
- Xitao Guo
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
| | - Yonghao Tan
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
| | - Yupei Hu
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
| | - Zainab Zafar
- National Centre for Physics, Islamabad, 44000, Pakistan
| | - Xin Liu
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
| | - Lin Feng
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
| | - Jijun Zou
- School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
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10
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Molloro LH, Tain S, Belachew N, Owusu KA, Zhao X. 3D mesoporous structure assembled from monoclinic M-phase VO 2 nanoflakes with enhanced thermochromic performance. RSC Adv 2021; 11:13556-13563. [PMID: 35423886 PMCID: PMC8697583 DOI: 10.1039/d1ra01558c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/06/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, 3D mesoporous structures assembled from monoclinic M-phase VO2 nanoflakes were successfully synthesized for enhanced thermochromic performance.
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Affiliation(s)
- Liboro Hundito Molloro
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
- Department of Chemistry
| | - Shouqin Tain
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
| | - Neway Belachew
- Department of Chemistry
- Debre Berhan University
- Debre Berhan
- Ethiopia
| | - Kwadwo Asare Owusu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
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11
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Wang Y, Wei W, Qu K, Shi Y, Li L, Guo X, Gao Y. Smart Window Based on Temperature-Responsive Starch Hydrogel with a Dynamic Regulation Mode. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Wei
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Kai Qu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yulin Shi
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi 832000, China
| | - Li Li
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi 832000, China
| | - Yanfeng Gao
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
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12
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Xie Y, Guan F, Li Z, Meng Y, Cheng J, Li L, Pei Q. A Phase-Changing Polymer Film for Broadband Smart Window Applications. Macromol Rapid Commun 2020; 41:e2000290. [PMID: 32691931 DOI: 10.1002/marc.202000290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 12/21/2022]
Abstract
Smart windows (SWs) with tunable opacity are sought to regulate solar-irradiation and privacy protection. A new smart window material based on a phase-changing polymer that can be reversibly switched between a semicrystalline, opaque state and an amorphous, transparent state is introduced. The polymer film is a network of the phase-changing poly(stearyl acrylate) crosslinked with a poly(ethylene oxide) oligomer. The two constituent polymers show strong phase separation. The transmission switching of the resulting copolymer film is resulted from the combination of three different mechanisms: reversible phase changing of the poly(stearyl acrylate) component, phase separation between the two distinct constituent polymers, and a large change of refractive index of the phase-changing polymer during the amorphous-to-semicrystalline transition. The opaqueness switching can be reversed and repeated for more than 500 cycles of heating and cooling. A silver nanowire (AgNW)-based transparent heater is combined with the SW film to control the semicrystalline-to-amorphous phase transition. The resulting smart window exhibits a high infrared transmittance modulation (ΔTIR ) of 80.4% and solar transmittance modulation (ΔTsolar ) of 70.2%, which significantly outperform existing thermochromic smart windows.
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Affiliation(s)
- Yu Xie
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Fangyi Guan
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhou Li
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Yuan Meng
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
| | - Jiang Cheng
- Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, Research Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, P. R. China
| | - Lu Li
- Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, Research Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, P. R. China
| | - Qibing Pei
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA
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Tungsten-Doped VO 2/Starch Derivative Hybrid Nanothermochromic Hydrogel for Smart Window. NANOMATERIALS 2019; 9:nano9070970. [PMID: 31269772 PMCID: PMC6669878 DOI: 10.3390/nano9070970] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 11/17/2022]
Abstract
Highly efficient energy-saving windows with high solar modulation properties (ΔTsol) are the everlasting pursuit of research for industrial applications in the smart window field. Hybridization is an effective means of improving both ΔTsol and luminous transmittance (Tlum). In this paper, hybrid thermochromic films were synthesized using tungsten-doped VO2 nanoparticles (NPs) and starch derivatives. Thermoresponsive 2-hydroxy-3-butoxypropyl starch (HBPS) was prepared with a low critical solution temperature (LCST) varying from 32 to 21 °C by the substitution of reactive groups. The hybrid film was obtained by dispersing W-doped VO2 NPs in HBPS hydrogels, which exhibiting remarkable solar modulation property (ΔTsol = 34.3%) with a high average luminous transmittance (Tlum, average = 53.9%).
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