Kinetic Study of the Graphite Oxide Reduction: Combined Structural and Gravimetric Experiments under Isothermal and Nonisothermal Conditions

摘要: The mechanisms involved in the thermal reduction of graphite oxide (GO) are not yet clear. In present study, GO, obtained by a Brodie-based method, is monitored means time- and temperature-resolved X-ray diffraction (XRD), thermogravimetric analysis (TGA), TGA/mass spectrometry (MS) dynamic (nonisothermal) static (isothermal) modes. Two distinct were well resolved fitting isothermal TGA data to 2D diffusion autocatalytic models, which provides new insights on behavior GO. combined XRD results mode suggest that mechanism mainly occurs interlayer, whereas external surface. latter overcomes former when GO has lost about 10 wt %. compared previous studies differences found could be attributed synthetic method used obtain