Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating
Abstract Switchable radiative cooling/heating holds great promise for mitigating the global energy and environmental crisis. Here, we reported a cost‐effective, high‐strength Janus film through surface optical engineering waste paper with one side decorated by a hydrophobic polymeric cooling coating...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
|
| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.676 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832588269377814528 |
|---|---|
| author | Zifan Song Zipeng Zhang Xueting Zhang Jingyang Liu Wanjie Wang Jianfeng Wang Xiuxiu Jin |
| author_facet | Zifan Song Zipeng Zhang Xueting Zhang Jingyang Liu Wanjie Wang Jianfeng Wang Xiuxiu Jin |
| author_sort | Zifan Song |
| collection | DOAJ |
| description | Abstract Switchable radiative cooling/heating holds great promise for mitigating the global energy and environmental crisis. Here, we reported a cost‐effective, high‐strength Janus film through surface optical engineering waste paper with one side decorated by a hydrophobic polymeric cooling coating consisting of micro/nanopore/particle hierarchical structure and the other side coated with hydrophilic MXene nanosheets for heating. The cooling surface demonstrates high solar reflectivity (96.3%) and infrared emissivity (95.5%), resulting in daytime/nighttime sub‐ambient radiative cooling of 6°C/8°C with the theoretical cooling power of 100.6 and 138.5 W m−2, respectively. The heating surface exhibits high solar absorptivity (83.7%) and low infrared emissivity (15.2%), resulting in excellent radiative heating capacity for vehicle charging pile (~6.2°C) and solar heating performance. Impressively, the mechanical strength of Janus film increased greatly by 563% compared with that of pristine waste paper, which is helpful for its practical applications in various scenarios for switchable radiative thermal management through mechanical flipping. Energy‐saving simulation results reveal that significant total energy savings of up to 32.4 MJ m−2 can be achieved annually (corresponding to the 12.4% saving ratio), showing the immense importance of reducing carbon footprint and promoting carbon neutrality. |
| format | Article |
| id | doaj-art-45db7323e4534c7da9de45b13ce17f63 |
| institution | Kabale University |
| issn | 2637-9368 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj-art-45db7323e4534c7da9de45b13ce17f632025-01-24T13:35:41ZengWileyCarbon Energy2637-93682025-01-0171n/an/a10.1002/cey2.676Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heatingZifan Song0Zipeng Zhang1Xueting Zhang2Jingyang Liu3Wanjie Wang4Jianfeng Wang5Xiuxiu Jin6Henan Eye Hospital People's Hospital of Zhengzhou University, Henan Provincial People's Hospital Zhengzhou ChinaSchool of Materials Science and Engineering Zhengzhou ChinaSchool of Materials Science and Engineering Zhengzhou ChinaHenan Eye Hospital People's Hospital of Zhengzhou University, Henan Provincial People's Hospital Zhengzhou ChinaSchool of Materials Science and Engineering Zhengzhou ChinaSchool of Materials Science and Engineering Zhengzhou ChinaHenan Eye Hospital People's Hospital of Zhengzhou University, Henan Provincial People's Hospital Zhengzhou ChinaAbstract Switchable radiative cooling/heating holds great promise for mitigating the global energy and environmental crisis. Here, we reported a cost‐effective, high‐strength Janus film through surface optical engineering waste paper with one side decorated by a hydrophobic polymeric cooling coating consisting of micro/nanopore/particle hierarchical structure and the other side coated with hydrophilic MXene nanosheets for heating. The cooling surface demonstrates high solar reflectivity (96.3%) and infrared emissivity (95.5%), resulting in daytime/nighttime sub‐ambient radiative cooling of 6°C/8°C with the theoretical cooling power of 100.6 and 138.5 W m−2, respectively. The heating surface exhibits high solar absorptivity (83.7%) and low infrared emissivity (15.2%), resulting in excellent radiative heating capacity for vehicle charging pile (~6.2°C) and solar heating performance. Impressively, the mechanical strength of Janus film increased greatly by 563% compared with that of pristine waste paper, which is helpful for its practical applications in various scenarios for switchable radiative thermal management through mechanical flipping. Energy‐saving simulation results reveal that significant total energy savings of up to 32.4 MJ m−2 can be achieved annually (corresponding to the 12.4% saving ratio), showing the immense importance of reducing carbon footprint and promoting carbon neutrality.https://doi.org/10.1002/cey2.676hierarchical nano‐micro structurehigh strengthJanus optical nanoengineeringswitchable radiative cooling/heating |
| spellingShingle | Zifan Song Zipeng Zhang Xueting Zhang Jingyang Liu Wanjie Wang Jianfeng Wang Xiuxiu Jin Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating Carbon Energy hierarchical nano‐micro structure high strength Janus optical nanoengineering switchable radiative cooling/heating |
| title | Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating |
| title_full | Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating |
| title_fullStr | Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating |
| title_full_unstemmed | Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating |
| title_short | Hierarchically structured, Janus optical nanoengineered wastepaper for switchable radiative cooling/heating |
| title_sort | hierarchically structured janus optical nanoengineered wastepaper for switchable radiative cooling heating |
| topic | hierarchical nano‐micro structure high strength Janus optical nanoengineering switchable radiative cooling/heating |
| url | https://doi.org/10.1002/cey2.676 |
| work_keys_str_mv | AT zifansong hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT zipengzhang hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT xuetingzhang hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT jingyangliu hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT wanjiewang hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT jianfengwang hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating AT xiuxiujin hierarchicallystructuredjanusopticalnanoengineeredwastepaperforswitchableradiativecoolingheating |