Chao GaoZhejiang University, China
Prof. Chao Gao receivedhis Ph. D. in 2001 on Polymer Chemistry and Physics in Shanghai Jiao TongUniversity (SJTU), M.S.C., and B.Sc. both on Chemical Engineering from Hunan University,in 1998 and 1995, respectively. Since 2001, he became a faculty member in SJTU,and associate professor in 2002. Since Nov. 2003, he worked with Prof. SirHarry Kroto as a visiting scholar and post-doc research fellow in University of Sussex, UK,and then moved to Prof. Axel H. E. Müller’s group at Bayreuth University,Germany in July 2005 as an Alexander von Humboldt research fellow. In 2008, he joined Zhejiang University, and was promoted as full professor.
His research interestsinclude hyperbranched polymers, chemistry of graphene and carbon nanotubes,controlled/living polymerization and click chemistry. He co-edited a book onhyperbranched polymers (published by John, Wiley & Sons) and published morethan 100 papers with citation of more than 4500 times and H-index 33. Hisresearch of graphene fiber knot has been selected by Nature as “Images of the Year” in 2011. He was awarded or funded with National Science Fund for Distinguished Young Scholars (2013), the least dense solid Guinness World Records (2013), “Gold Kangaroo” World Innovation Award (2013), Academician of Asia-Pacific Academy of Materials (APAM) (2013), Zhejiang Youth Technology Award (2013), the Second Prize of National Natural Science Award (2009), the First Prize of Shanghai Science and Technology Award (2007), and Top 100 National Excellent Doctoral Dissertation of China (2005).He is the Regional Editor of Colloid and Polymer Science.
Title：Multifunctional Graphene Fibers&“Gao-Fe” Approach to Facile Production of Single-Layer Graphene Oxide
SymposiumB22 Fibers and Fabrics&A01 Frontier Preparation Technology
Starting Time2015-10-28 09:00:00
Ending Time2015-10-28 19:25:00
Abstract
Multifunctional Graphene Fibers
Graphene fiber (GF) is a new kind of carbon fiber (CF). GF was made from natural graphite, opening an alternative way for the fabrication of CFs. GFs have the natures of lightness, high strength, high electrical conductivity, and high thermal conductivity. As compared with the conventional CFs, GFs have much higher electrical and thermal conductivities. GFs possess the merits of easy fabrication, low cost, and large-scale production if compared with carbon nanotube fibers. Wet-spinning of graphene oxide liquid crystal dope followed by reduction gave birth to continuous GFs. Through a liquid crystal self-templating strategy, multifunctional composite fibers were achieved by wet-spinning of graphene oxide and other guests such as polymers, inorganic nanoparticles, and metallic nanoparticles. GFs can be used to fabricate yarn supercapacitors and other fiber-shaped micro-devices, promising wide applications in our real life.
“Gao-Fe” Approach to Facile Production of Single-Layer Graphene Oxide
Graphene oxide (GO) is an important precursor of graphene due to its good solubility in water and selected organic solvents. GO can be assembled into multifunctional macroscopic materials. Two strategies have been developed to prepare GO: Brodie-Staudenmaier with oxidant of KClO3-HNO3 (1859) and Hummers with oxidant of KMnO4 (1958). Both methods have disadvantages such as long reaction (10-100 h), highly toxic gases or heavy metals, high risk of explosion, and high cost of waste treatment. Recently, our group invented a new approach to prepare single layer GO with the oxidant of K2FeO4, which has been coined as “Gao-Fe” method. This method has the advantages of fast reaction (1 h), no toxic gases and heavy metals, no risk of explosion, and low cost of waste treatment. The resulting GO has the same good solubility as the case of GO prepared by the conventional methods, can form liquid crystals, and can be assembled into macroscopic materials such as fibers, films, and ultra-light weight aerogels. Uniform ultra-large GO can be also prepared, which has been produced by C6G6 company.
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