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首页> 外文期刊>RSC Advances >A facile one-step route for production of CuO, NiO, and CuO-NiO nanoparticles and comparison of their catalytic activity for ammonium perchlorate decomposition
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A facile one-step route for production of CuO, NiO, and CuO-NiO nanoparticles and comparison of their catalytic activity for ammonium perchlorate decomposition

机译：一种简便的一步法生产CuO，NiO和CuO-NiO纳米颗粒的方法以及它们对高氯酸铵分解的催化活性的比较

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摘要

This study demonstrates a straightforward, inexpensive, high-yield, and ecofriendly route for synthesis of sphere-like CuO, NiO, and CuO-NiO (with different molar ratios) nanoparticles (NPs) through emulsion route. These NPs have been characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), dynamic light scattering (DLS), and fourier transform infrared spectroscopy (FT-IR). Then, the prepared composites (CuO/AP, NiO/AP, and CuO-NiO/AP) are compared for ammonium perchlorate (AP) decomposition. These composites' thermal decomposition is superior to that of pure AP. Besides, due to their smaller particles size, more active sites, and increased rate of heterogeneous decomposition of deprotonized HClO4 gas on the catalytic surface, CuO-NiO (1 : 1) NPs show more catalytic activity than CuO and NiO NPs. Here, AP thermal decomposition temperature decreases to around 114.3 degrees C. Also, effects of the various CuO/NiO NPs molar ratios on the AP thermal decomposition have been taken into account. Finally, with regard to the AP catalytic thermal decomposition, this study has designed the possible mechanism for the synergistic effect between the suggested NPs.
机译：这项研究证明了通过乳液法合成球形CuO，NiO和CuO-NiO（具有不同摩尔比）纳米颗粒（NPs）的直接，廉价，高产量且生态友好的途径。这些NP的特征在于扫描电子显微镜（SEM），X射线衍射（XRD），动态光散射（DLS）和傅立叶变换红外光谱（FT-IR）。然后，比较制备的复合材料（CuO / AP，NiO / AP和CuO-NiO / AP）的高氯酸铵（AP）分解。这些复合材料的热分解性能优于纯AP。此外，由于其较小的粒径，更多的活性位点以及去质子化的HClO4气体在催化表面上的异质分解速率增加，CuO-NiO（1：1）NPs比CuO和NiO NPs显示出更高的催化活性。在此，AP热分解温度降低至约114.3摄氏度。而且，已考虑到各种CuO / NiO NPs摩尔比对AP热分解的影响。最后，关于AP催化热分解，本研究设计了建议的NP之间协同作用的可能机理。

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