期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 9, 期 39, 页码 22472-22480出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta05529a
关键词
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资金
- National Natural Science Foundation of China [21777105]
- Shenzhen Science and Technology Foundations [JCYJ20180507182040308, JCYJ20170818101137960]
The novel 3D hydrogel evaporator prepared by a simple method showed excellent evaporation rate and long-term high-performance evaporation, solving the issue of salt crystallization.
Solar interface evaporation with high thermal utilization and evaporation rate has great application potential for seawater desalination. Improving evaporation performance and inhibiting the formation of crystalline salt are the key to achieve long-term continuous and efficient solar desalination. In this study, a novel 3D hydrogel evaporator constructed from cotton, reduced graphene (rGO), sodium alginate (SA) and polyvinyl alcohol (PVA) was prepared by a simple method. The evaporator showed an excellent evaporation rate of 4.57 kg m(-2) h(-1) and kept high-performance evaporation without salt crystallization for 5 days. Based on the excellent water transport capacity and the exceptional 3D structure, the evaporator realized cold and heat dual-mode evaporation enhancing the evaporation performance and the suppression of salt crystallization by directional solution transfer. This work aimed to solve the shortage of freshwater resources by developing sustainable and high-performance solar desalination technology.
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