Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation
Abstract Taking abundant and sustainable solar energy as the only energy source, solar‐powered interface evaporation has been regarded as a promising method to alleviate the pressure of freshwater shortage. However, the uptake of clean water from brine is constantly accompanied by evaporation of wat...
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| Format: | Article |
| Language: | English |
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Wiley
2023-09-01
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| Series: | Global Challenges |
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| Online Access: | https://doi.org/10.1002/gch2.202300046 |
| _version_ | 1797676479410077696 |
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| author | Dan Wei Xiaoyu Cao Miaomiao Ma Zexiang Zhao Jing Zhang Xinyu Dong Chengbing Wang |
| author_facet | Dan Wei Xiaoyu Cao Miaomiao Ma Zexiang Zhao Jing Zhang Xinyu Dong Chengbing Wang |
| author_sort | Dan Wei |
| collection | DOAJ |
| description | Abstract Taking abundant and sustainable solar energy as the only energy source, solar‐powered interface evaporation has been regarded as a promising method to alleviate the pressure of freshwater shortage. However, the uptake of clean water from brine is constantly accompanied by evaporation of water and condensation of vapor, which inevitably generates salt solid, preventing further continuous and stable evaporation. The most direct method is to fabricate a photothermal material with salt self‐resistance by using the reflux of salt ions. Here, a superhydrophilic interconnected biomass carbon absorber (SBCA) is prepared by freeze‐drying and carbonization, realizing strong liquid pumping, and self‐blocking salt. In combination with superior broadband light absorption (94.91%), high porosity (95.9%), superhydrophilicity, and excellent thermal localization, an evaporation device with excellent evaporation rate (2.45 kg m−2 h−1 under 1 kW m−2) is successfully proposed. In the meantime, the porous skeleton and rapid water transport can enhance the diffusion of salt ions and slow down the rate of salt deposition. As a result, no salt deposition is found on the SBCA surface after continuous irradiation at 1 kW m−2 for 15 h. The design can provide a convenient and low‐cost efficient strategy for solar steam generators to address clean water acquisition. |
| first_indexed | 2024-03-11T22:29:42Z |
| format | Article |
| id | doaj.art-4834ad40bba846be8541d269f8d5947c |
| institution | Directory Open Access Journal |
| issn | 2056-6646 |
| language | English |
| last_indexed | 2024-03-11T22:29:42Z |
| publishDate | 2023-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Global Challenges |
| spelling | doaj.art-4834ad40bba846be8541d269f8d5947c2023-09-23T07:13:45ZengWileyGlobal Challenges2056-66462023-09-0179n/an/a10.1002/gch2.202300046Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam GenerationDan Wei0Xiaoyu Cao1Miaomiao Ma2Zexiang Zhao3Jing Zhang4Xinyu Dong5Chengbing Wang6School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaSchool of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Xi'an Shaanxi 710021 ChinaAbstract Taking abundant and sustainable solar energy as the only energy source, solar‐powered interface evaporation has been regarded as a promising method to alleviate the pressure of freshwater shortage. However, the uptake of clean water from brine is constantly accompanied by evaporation of water and condensation of vapor, which inevitably generates salt solid, preventing further continuous and stable evaporation. The most direct method is to fabricate a photothermal material with salt self‐resistance by using the reflux of salt ions. Here, a superhydrophilic interconnected biomass carbon absorber (SBCA) is prepared by freeze‐drying and carbonization, realizing strong liquid pumping, and self‐blocking salt. In combination with superior broadband light absorption (94.91%), high porosity (95.9%), superhydrophilicity, and excellent thermal localization, an evaporation device with excellent evaporation rate (2.45 kg m−2 h−1 under 1 kW m−2) is successfully proposed. In the meantime, the porous skeleton and rapid water transport can enhance the diffusion of salt ions and slow down the rate of salt deposition. As a result, no salt deposition is found on the SBCA surface after continuous irradiation at 1 kW m−2 for 15 h. The design can provide a convenient and low‐cost efficient strategy for solar steam generators to address clean water acquisition.https://doi.org/10.1002/gch2.202300046desalinationporous carbon materialssolar interface evaporation |
| spellingShingle | Dan Wei Xiaoyu Cao Miaomiao Ma Zexiang Zhao Jing Zhang Xinyu Dong Chengbing Wang Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation Global Challenges desalination porous carbon materials solar interface evaporation |
| title | Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation |
| title_full | Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation |
| title_fullStr | Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation |
| title_full_unstemmed | Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation |
| title_short | Superhydrophilic Interconnected Biomass‐Based Absorbers Toward High‐Speed Evaporation for Solar Steam Generation |
| title_sort | superhydrophilic interconnected biomass based absorbers toward high speed evaporation for solar steam generation |
| topic | desalination porous carbon materials solar interface evaporation |
| url | https://doi.org/10.1002/gch2.202300046 |
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