論文

査読有り
2010年9月

Self-Propagating Domino-like Reactions in Oxidized Graphite

ADVANCED FUNCTIONAL MATERIALS
  • Franklin Kim
  • ,
  • Jiayan Luo
  • ,
  • Rodolfo Cruz-Silva
  • ,
  • Laura J. Cote
  • ,
  • Kwonnam Sohn
  • ,
  • Jiaxing Huang

20
17
開始ページ
2867
終了ページ
2873
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/adfm.201000736
出版者・発行元
WILEY-V C H VERLAG GMBH

Graphite oxide (GO) has received extensive interest as a precursor for the bulk production of graphene-based materials. Here, the highly energetic nature of GO, noted from the self-propagating thermal deoxygenating reaction observed in solid state, is explored. Although the resulting graphene product is quite stable against combustion even in a natural gas flame, its thermal stability is significantly reduced when contaminated with potassium salt by-products left from GO synthesis. In particular, the contaminated GO becomes highly flammable. A gentle touch with a hot soldering iron can trigger violent, catastrophic, total combustion of such GO films, which poses a serious fire hazard. This highlights the need for efficient sample purification methods. Typically, purification of GO is hindered by its tendency to gelate as the pH value increases during rinsing. A two-step, acid-acetone washing procedure is found to be effective for suppressing gelation and thus facilitating purification. Salt-induced flammability is alarming for the fire safety of large-scale manufacturing, processing, and storage of GO materials. However, the energy released from the deoxygenation of GO can also be harnessed to drive new reactions for creating graphene-based hybrid materials. Through such domino-like reactions, graphene sheets decorated with metal and metal oxide particles are synthesized using GO as the in situ power source. Enhanced electrochemical capacitance is observed for graphene sheets loaded with RuO2 nanoparticles.

Web of Science ® 被引用回数 : 253

リンク情報
DOI
https://doi.org/10.1002/adfm.201000736
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000282288600013&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/adfm.201000736
  • ISSN : 1616-301X
  • Web of Science ID : WOS:000282288600013

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