期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 2021, 期 10, 页码 982-988出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202001068
关键词
Thermal oxidation etching; g-C3N4; CuO composites; Thermal decomposition of ammonium perchlorate; Catalytic effect; Catalytic mechanism
A composite catalyst of thermal oxidation etching assisted g-C3N4 nanosheets/CuO was prepared, showing significant catalytic activity in lowering the decomposition temperature of ammonium perchlorate and increasing the heat released during decomposition. This novel strategy of constructing composite catalyst could have significant potential in the solid propellant field.
The thermal oxidation etching assisted g-C3N4 nanosheets/CuO was prepared through a facile co-precipitation strategy. In this work, the structure, morphology, and composition of g-C3N4 (UCN, prepared by urea), g-C3N4 nanosheets (TCN, prepared by thermal oxidation etching of UCN), g-C3N4/CuO (UCN/CuO), g-C3N4 nanosheets/CuO (TCN/CuO) were characterized via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Furthermore, the catalytic effect of the obtained samples on the thermal decomposition of ammonium perchlorate (AP) was examined by thermal gravimetric analysis (TGA). As a result, in the case of 5 wt% TCN/CuO, the high decomposition temperature of AP decreased by 120.6 degrees C, which is much lower than that of UCN, TCN, CuO and UCN/CuO. In addition, the exothermic heat released from the decomposition of AP increased from 430.64 J g(-1) to 2856.08 J g(-1). This evident catalytic activity may be related to the synergistic effect of CuO and TCN. This work provides a novel strategy for the construction of composite catalyst for the thermal decomposition of AP, which is supposed to possess significant potential in the solid propellant field.
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