期刊
SOLAR ENERGY
卷 227, 期 -, 页码 303-311出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2021.09.024
关键词
Wood-derived aerogel; Solar desalination; Photothermal conversion; Low-cost; Salt-rejecting
资金
- Natural Science Foundation of Hainan Province [2019RC005]
- National Natural Science Foundation of China [22061014, 21761010]
- Hainan University start-up fund (KYQD) [KYQD (ZR)1806]
- Haikou Science and Technology Project [2020-033]
- Open Funds of the State Key Laboratory of Rare Earth Resource Utilization [RERU2021001, RERU2021020]
This study presents a flexible cellulose aerogel made from natural wood, which serves as an efficient and stable solar evaporator with the capability to resist salt accumulation and self-clean. It shows high solar steam efficiency and stable evaporation rate, making it a promising continuous and stable installation for solar desalination.
Interface solar-driven evaporation is a very promising technology used in solar energy harvesting, seawater desalination and water purification. However, salt accumulation is still a serious problem that hinders the longterm stable operation of the evaporator. Herein, we use natural wood with inherent porosity to develop a flexible cellulose aerogel, which can be used as efficient and stable solar evaporator for desalination after simple surface carbonization. This aerogel evaporator achieves a solar steam efficiency of 83.4% and an evaporation rate of 1.40 kg m- 2 h-1 under the sunlight intensity of 1 kW m- 2. In the simulated evaporation experiment for 7 days, the evaporator shows a stable evaporation rate (about 1.39 kg m- 2 h-1), indicating the potential for long-term operation. In addition, the evaporator has the ability to resist salt accumulation and self-cleaning. The low cost, simple preparation and multiple functions make the evaporator promising to be a continuous and stable installation for solar desalination.
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