Bioinspired Assembly of Carbon Nanotube into Graphene Aerogel with “Cabbagelike” Hierarchical Porous Structure for Highly Efficient Organic Pollutants Cleanup

• DOI: 10.1021/acsami.7b15322
• Publication Date: 2017-12-15T22:45:14Z
• Authors: Wenwei Zhan; Siruo Yu; Liang Gao; Feng Wang; Xue Fu; Gang Sui; Xiaoping Yang
• Keywords: Carbon fibers

Nowadays, physical absorption has become a feasible method offering an efficient and green route to remove organic pollutants from the industrial wastewater. Inspired by polydopamine (PDA) chemistry, one-dimensional PDA-functionalized multiwalled carbon nanotubes (MWCNT-PDA) were creatively introduced into graphene aerogel framework synthesize robust graphene/MWCNT-PDA composite (GCPCA). The whole forming process needed no additional reducing agents, significantly contamination emissions environment. GCPCA exhibited outstanding repeatable compressibility, ultralight weight, as well hydrophobic nature, which crucial for highly pollution absorption. MWCNTs in moderate amounts can provide aerogels with desirable structure stability extra specific surface area. Meanwhile, eventual performance of GCPCAs be improved optimizing microporous structure. In particular, novel "cabbagelike" hierarchical porous was obtained prefreezing temperature decreased −80 °C. miniaturization pore size around periphery enhanced capillary flow channels, super-absorption capacity solvents up 501 times (chloroform) its own mass. Besides, excellent reusable absorption–squeezing, absorption–combustion, absorption–distillation cycles according characteristic different solvents. Because viable synthesis method, resulting unique possess broad important application prospects, such oil cleanup treatment chemical