pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows
Thermoresponsive hydrogels have been designed for smart windows to dynamically modulate solar radiation, but their inherent drawbacks of long response time and imperfectly matched phase transition temperature have limited their wide applications. This work reports a novel composite hydrogel consisti...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Science Press
2024-03-01
|
| Series: | National Science Open |
| Subjects: | |
| Online Access: | https://www.sciengine.com/doi/10.1360/nso/20230071 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850232708925489152 |
|---|---|
| author | Zhong Sai Xue Yuxuan Wang Kuanwen Li Haoyang Lu Yanghua Pang Zhenqian Jiang Tengyao Tan Gang |
| author_facet | Zhong Sai Xue Yuxuan Wang Kuanwen Li Haoyang Lu Yanghua Pang Zhenqian Jiang Tengyao Tan Gang |
| author_sort | Zhong Sai |
| collection | DOAJ |
| description | Thermoresponsive hydrogels have been designed for smart windows to dynamically modulate solar radiation, but their inherent drawbacks of long response time and imperfectly matched phase transition temperature have limited their wide applications. This work reports a novel composite hydrogel consisting of hydroxypropyl cellulose, polyacrylic acid, and carbon quantum dots with intriguing features of tunable transition temperature and enhanced switching speed. The composite hydrogel demonstrated flexible tunability in transition temperature by controlling the hydrogen ion concentration and a fast response speed by dopping with carbon dots for efficient photothermal conversion. The building energy simulation was carried out to investigate the impacts of transition temperature variations and solar regulations on the space cooling/heating loads under different climate conditions, revealing the necessity of tunability of both transition temperature and solar transmittance in thermochromic smart windows. This novel design of thermochromic composite hydrogel provides insight into theoretical and experimental support for future adaptive building envelopes. |
| format | Article |
| id | doaj-art-2057c5d671f446348e6b51b1f6da8506 |
| institution | OA Journals |
| issn | 2097-1168 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Science Press |
| record_format | Article |
| series | National Science Open |
| spelling | doaj-art-2057c5d671f446348e6b51b1f6da85062025-08-20T02:03:06ZengScience PressNational Science Open2097-11682024-03-01310.1360/nso/20230071eb33e642pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windowsZhong Sai0Xue Yuxuan1Wang Kuanwen2Li Haoyang3Lu Yanghua4Pang Zhenqian5Jiang Tengyao6Tan Gang7["School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China"]["School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China"]["School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China"]["The Smart Materials for Architecture Research Lab, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China"]["The Smart Materials for Architecture Research Lab, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China"]["College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China","The Smart Materials for Architecture Research Lab, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China"]["School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China"]["College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China","The Smart Materials for Architecture Research Lab, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China"]Thermoresponsive hydrogels have been designed for smart windows to dynamically modulate solar radiation, but their inherent drawbacks of long response time and imperfectly matched phase transition temperature have limited their wide applications. This work reports a novel composite hydrogel consisting of hydroxypropyl cellulose, polyacrylic acid, and carbon quantum dots with intriguing features of tunable transition temperature and enhanced switching speed. The composite hydrogel demonstrated flexible tunability in transition temperature by controlling the hydrogen ion concentration and a fast response speed by dopping with carbon dots for efficient photothermal conversion. The building energy simulation was carried out to investigate the impacts of transition temperature variations and solar regulations on the space cooling/heating loads under different climate conditions, revealing the necessity of tunability of both transition temperature and solar transmittance in thermochromic smart windows. This novel design of thermochromic composite hydrogel provides insight into theoretical and experimental support for future adaptive building envelopes.https://www.sciengine.com/doi/10.1360/nso/20230071thermochromic hydrogeltransition temperaturecarbon quantum dotslower critical solution temperature tunabilitybuilding energy efficiency |
| spellingShingle | Zhong Sai Xue Yuxuan Wang Kuanwen Li Haoyang Lu Yanghua Pang Zhenqian Jiang Tengyao Tan Gang pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows National Science Open thermochromic hydrogel transition temperature carbon quantum dots lower critical solution temperature tunability building energy efficiency |
| title | pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| title_full | pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| title_fullStr | pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| title_full_unstemmed | pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| title_short | pH-sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| title_sort | ph sensitive tunable thermochromic hydrogel with carbon quantum dots for smart windows |
| topic | thermochromic hydrogel transition temperature carbon quantum dots lower critical solution temperature tunability building energy efficiency |
| url | https://www.sciengine.com/doi/10.1360/nso/20230071 |
| work_keys_str_mv | AT zhongsai phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT xueyuxuan phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT wangkuanwen phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT lihaoyang phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT luyanghua phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT pangzhenqian phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT jiangtengyao phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows AT tangang phsensitivetunablethermochromichydrogelwithcarbonquantumdotsforsmartwindows |