Thermodynamic and Kinetic Analysis of Lowtemperature Thermal Reduction of Graphene Oxide

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• 作者：Kuibo Yin ; Haitao Li ; Yidong Xia ; Hengchang Bi ; Jun Sun ; Zhiguo Liu&#8230
• 关键词：Graphene oxide ; Activation energy ; Thermal deoxygenation
• 刊名：Nano-Micro Letters
• 出版年：2011
• 出版时间：March 2011
• 年：2011
• 卷：3
• 期：1
• 页码：51-55
• 全文大小：146KB
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• 作者单位：Kuibo Yin (19)
  Haitao Li (29)
  Yidong Xia (29)
  Hengchang Bi (19)
  Jun Sun (19)
  Zhiguo Liu (29)
  Litao Sun (19)
  
  19. SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, P. R. China
  29. Department of Materials Science and Engineering, National Lab of Solid State Microstructure, Nanjing University, Nanjing, 210093, P. R. China
  
• 刊物类别：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
• 刊物主题：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
• 出版者：Springer Berlin Heidelberg
• ISSN：2150-5551

文摘

The thermodynamic state and kinetic process of low-temperature deoxygenation reaction of graphene oxide (GO) have been investigated for better understanding on the reduction mechanism by using Differential Scanning Calorimetry (DSC), Thermogravimetry-Mass Spectrometry (TG-MS), and X-ray Photo-electron Spectroscopy (XPS). It is found that the thermal reduction reaction of GO is exothermic with degassing of CO2, CO and H₂O. Graphene is thermodynamically more stable than GO. The deoxygenation reaction of GO is kinetically controlled and the activation energy for GO is calculated to be 167kJ/mol (1.73 eV/atom). Keywords Graphene oxide Activation energy Thermal deoxygenation