Autor(en)
Ge, Jin; Shi, Lu-An; Wang, Yong-Chao; Zhao, Hao-Yu; Yao, Hong-Bin; Zhu, Yin-Bo; Zhang, Ye; Zhu, Hong-Wu; Wu, Heng-An; Yu, Shu-Hong
Titel
Joule-heated graphene-wrapped sponge enables fast clean-up of viscous crude-oil spill
Teil von
  • Nature nanotechnology, 2017-05-01, Vol.12 (5), p.434-440
Ort / Verlag
LONDON: NATURE PUBLISHING GROUP
Links zum Volltext
Quelle
TEMA - Technik und Management
Beschreibungen
The clean-up of viscous crude-oil spills is a global challenge. Hydrophobic and oleophilic oil sorbents have been demonstrated as promising candidates for oil-spill remediation. However, the sorption speeds of these oil sorbents for viscous crude oil are rather limited. Herein we report a Joule-heated graphene-wrapped sponge (GWS) to clean-up viscous crude oil at a high sorption speed. The Joule heat of the GWS reduced in situ the viscosity of the crude oil, which prominently increased the oil-diffusion coefficient in the pores of the GWS and thus speeded up the oil-sorption rate. The oil-sorption time was reduced by 94.6% compared with that of non-heated GWS. Besides, the oil-recovery speed was increased because of the viscosity decrease of crude oil. This in situ Joule self-heated sorbent design will promote the practical application of hydrophobic and oleophilic oil sorbents in the clean-up of viscous crude-oil spills.
Format
Sprache(n)
Englisch
Identifikator(en)
ISSN: 1748-3387
ISSN: 1748-3395
DOI: 10.1038/NNANO.2017.33

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