Application of electron microscopy and X-ray diffraction to graphite oxide and its decomposition products Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/j9602384s

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  • Graphite oxides which had been prepared from three different size graphite particles by the modified Brodie method were observed with the electron microscope. The thermal decomposition products of the oxides, obtained by heating them at 240° and 300°, were observed using the electron microscope and x-ray diffraction. Graphite oxide was seen (using the electron microscope) to consist of flexible, irregularly shaped sheets. The decomposition products were observed as irregularly shaped sheets, somewhat folded, torn or split, and at higher temperatures as amorphous carbon. X-ray diffraction patterns of the decomposition products allow the qualitative evaluation of the change in the composition of the various samples. The level of oxidation obtained is due to the original graphite particle size and to the number of oxidation steps to which a sample is subjected. At the higher temperature the decomposition products consist of unoxidized graphite and amorphous carbon.
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