Journal
THERMOCHIMICA ACTA
Volume 666, Issue -, Pages 60-65Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2018.06.005
Keywords
Multilayer graphene; Al-CuO nanothermites; CuO-C reaction; Al-C bond; Reaction mechanism
Funding
- National Natural Science of China [11502247, 11502242, 11702268, 51506093]
- Open Project of State Key Laboratory of Environment-friendly Energy Materials from Southwest University of Science and Technology [14zxfk08]
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Reactions of nanothermites is complex, and the heterogeneous reaction poorly understood. In this study Al-CuO-multilayer graphene (MLG) composites were studied to explore the effects of MLG on the reaction properties, products composition and reaction mechanism of Al-CuO nanothermites. The morphology composition of Al-CuO-MLG composites before and after reaction was studied by scanning electron microscope (SEM). And detailed reaction pathways were characterized by X-ray diffraction (XRD), thermal gravimetric analysis and differential scanning calorimeter (TG-DSC) and X-ray photoelectron spectroscopy (XPS). Results indicate that the presence of MLG between nano-Al and nano-CuO particles tunes and improves reaction characteristics. A total heat of reaction of the Al-CuO-MLG (1 wt%) composites is 1679 J/g, increased by 87.5 J/g compared to that of Al-CuO composites.
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