Effect of preparation methods on the structure and catalytic thermal decomposition application of graphene/Fe2O3 nanocomposites
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- 作者：Yuanfei Lan ; Jingke Deng ; Guoping Li…
- 关键词：Graphene ; Fe2O3 ; Supercritical CO2 ; Catalytic thermal decomposition
- 刊名：Journal of Thermal Analysis and Calorimetry
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：127
- 期：3
- 页码：2173-2179
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
- 出版者：Springer Netherlands
- ISSN：1588-2926
- 卷排序：127
文摘
The graphene/Fe2O3 nanocomposites were prepared by the sol–gel method and then dried naturally in air or supercritical CO2. X-ray diffraction, scanning electron microscopy and specific surface area analysis were used to characterize the structure of the nanocomposites. The nanocomposites dried with supercritical CO2 have larger specific area and porous structure. The catalytic properties of the graphene/Fe2O3 nanocomposites for ammonium perchlorate were investigated by differential scanning calorimetry. When the nanocomposites were added, not only the thermal decomposition temperature of ammonium perchlorate was decreased, but also the exothermic heat was increased. Comparing the two drying methods, the graphene/Fe2O3 nanocomposites dried with supercritical CO2 showed better catalytic effects.