本文以裂解-质谱联用、SEM、XRD、UV、Raman光谱技术,探讨了氧化石墨烯(graphene oxide GO)工艺制备中高温阶段的温度对GO性质的影响及GO对环境温度的稳定性.GO的分散性实验显示:制备温度控制在70～90℃范围内,制备出GO的分散性较好；SEM显示:80℃时所制备的GO能以单层形式分散在水溶液中,而120℃则为多层聚集体分散；裂解-质谱联用实验显示:GO在100℃及以上将出现脱羧反应,使GO不稳定；XRD、UV、Raman实验均证实:制备温度在120℃或更高时,GO不能被制备.因此,Hummers法制备GO,高温阶段应控制在70～90℃之间.XRD实验结果还显示:GO固态时,在120℃或更高温度下不能稳定存放.
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