期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 10, 页码 4074-4078出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ee01532j
关键词
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资金
- Australia Research Council (ARC) [DP110102311, FT100100192]
- Monash University
We have demonstrated a new strategy for enhancing solar evaporation by using floating light-absorbing materials. Floating Fe3O4/C magnetic particles with an average size of 500 nm were synthesized by carbonization of poly(furfuryl alcohol) (PFA) incorporated with Fe3O4 nanoparticles. The Fe3O4/C particles had a BET surface area of 429 m(2) g(-1), and a density of 1.44 g cm(-3). Because of their hydrophobicity and a bulk packing density of 0.53 g cm(-3), Fe3O4/C particles were floatable on water. Our results indicated that these Fe3O4/C particles enhanced the water evaporation rate by as much as a factor of 2.3 in the solar evaporation of 3.5% salt water. In addition, Fe3O4/C particles were easily recycled using a magnet, and stable after being recycled three times. Our work provides a low-cost and highly effective way for accelerating solar evaporation for industrial applications such as solar desalination, salt production, brine management and wastewater treatment.
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