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The recyclability of carbon nanotube (CNT) sponges in terms of oil absorption was studied. The sorption capacities of these sponges are greater than 100gg –1 for many organics and oils with viscosities of 3–200cP, and they maintain sorption capacities of 20–40gg –1 after 10 cycles of absorption. About 98% of absorbed oil can be recovered by squeezing or converted to heat by directly...
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