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Recyclable carbon nanotube sponges for oil absorption

  • Xuchun Gui
  • , Hongbian Li
  • , Kunlin Wang
  • , Jinquan Wei
  • , Yi Jia
  • , Zhen Li
  • , Lili Fan
  • , Anyuan Cao
  • , Hongwei Zhu
  • , Dehai Wu
  • Tsinghua University
  • Sun Yat-Sen University
  • Peking University

Research output: Contribution to journalArticlepeer-review

300 Scopus citations

Abstract

The recyclability of carbon nanotube (CNT) sponges in terms of oil absorption was studied. The sorption capacities of these sponges are greater than 100 g g-1 for many organics and oils with viscosities of 3-200 cP, and they maintain sorption capacities of 20-40 g g-1 after 10 cycles of absorption. About 98% of absorbed oil can be recovered by squeezing or converted to heat by directly burning the oil within the sponges. The sorption process has been described by a second-order kinetic model. The results demonstrate that CNT sponges are promising oil sorbents with good recyclability.

Original languageEnglish
Pages (from-to)4798-4804
Number of pages7
JournalActa Materialia
Volume59
Issue number12
DOIs
StatePublished - Jul 2011
Externally publishedYes

Keywords

  • Carbon and graphite
  • Chemical vapor deposition (CVD)
  • Recycling

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