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           Fabrication of nano-structure materials

Spongy graphene as a highly efficient and recyclable sorbent

(a~b) Low magnified and high magnified images of spongy graphene, respectively. (c~e) Wettability for water and dodecane, respectively.
(a) Dynamic absorption of spongy graphene towards dodecane (intervals: 20 seconds). (b) Recyclability of spongy graphene for Toluene and Dodecane. Spongy graphene could be regenerated (>10 times) by heat treatment yielding the full release of adsorbates (>99%). (c) Absorption efficiency of spongy graphene. Spongy graphene shows highly efficient absorption of not only petroleum products and fats, but also common toxic solvents.
Publications: 1.Hengchang Bi, Xiao Xie, Kuibo Yin, Yilong Zhou, Shu Wan, Longbing He, Feng Xu, Florian Banhart, Litao Sun, and Rodney S. Ruoff “Spongy Graphene as a Highly Efficient and Recyclable Sorbent for Oils and Organic Solvents" Advanced Functional Materials 22, 4421-4425 (2012)  
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