期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 58, 期 44, 页码 20291-20299出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b03717
关键词
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资金
- National Natural Science Foundation of China [51603190, 11572290, 11432003]
- National Natural Science Foundation of China-Henan Province Joint Funds [U1604253]
A superelastic hierarchical porous thermoplastic polyurethane (TPU) monolith with excellent hydrophobicity was facilely prepared by a thermally induced phase separation method with two cooling steps. The TPU monolith as an oil absorbent is capable to selectively absorb various oils/organic solvents from oil/water mixtures with high saturated absorption capacity (5.95-40.60 g g(-1)) and rapid absorption rate (achieving absorption equilibrium within 15 s). More importantly, the monolith exhibits remarkable superelasticity with large reversible compressibility and outstanding fatigue resistance (1500 cycles at 80% strain), allowing it to repetitively absorb oil via simple manual squeezing. Furthermore, the monolith possesses high tolerance and durability in a wide range of pH (2-12) and temperature (0-100 degrees C), even in a turbulent environment. The TPU monolith can also continuously absorb and remove oil/organic solvent from the water surface by a pump-assisted system. The above-mentioned advantages of a porous TPU monolith make it become a promising and sustainable candidate for water pollution treatment.
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