期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 612, 期 -, 页码 88-96出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.12.064
关键词
Photothermal conversion; Bionic mushroom; Self-floating integrated structure; Tree transpiration; Graphene aerogel
资金
- Natural Science Foundation of Shandong Province [ZR2021YQ32]
- National Natural Science Foundation of China [21776147, 21606140, 52002198]
- Taishan Scholar Project of Shandong Province [tsqn201909117]
- Qing-dao Municipal Science and Technology Bureau, China [19-6-1-91-nsh]
- International Science & Technology Cooperation Program of China [2014DFA60150]
This study presents a bionic mushroom solar steam generator (BMSSG) for efficient seawater desalination, utilizing a wooden strip and graphene aerogels. The BMSSG achieves a high evaporation rate and self-floating capability, providing a low-cost and scalable solution with potential for practical applications in the future.
Solar desalination is considered as a promising approach to solve the shortage of fresh water resources. In this work, inspired by the transpiration of trees, a self-floating and integrated bionic mushroom solar steam generator (BMSSG) is proposed for highly efficient water evaporation. A wooden strip is used to mimic the stipe of the mushroom for water transportation, meanwhile polyvinyl alcohol (PVA) modified graphene aerogels (GA) is used to imitate the pileus of the mushroom for photothermal conversion. After optimizing compositions of the aerogel and sizes of the wooden strip, a high evaporation rate of 1.67 kg m (-2) h (-1) is obtained, outcompeting most of other wood-based evaporators. Compared to traditional interfacial evaporation devices, BMSSG is an integrated structure without a thermal insulation layer and an absorbent wick, which not only increases the compactness that is good for stability and reliability, but also reduces the manufacturing cost. Moreover, the BMSSG can self-float on the water like a roly-poly. These advantages indicate that BMSSG will play a significant role in seawater desalination. The feasibility as well as stability and recyclability of the BMSSG for seawater desalination are demonstrated. This bioinspired design provides a low-cost and scalable SSG, which will have a profound impact in future practical applications. (C) 2021 Elsevier Inc. All rights reserved.
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