Zhao Haifeng, Lv Jing, Sang Junshan, Zhu Li, Zheng Peng, Andrew Greg L, Tan Linghua
National Special Superfine Power Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, China.
Gansu Yinguang Chemical Industry Group Co., Ltd., Baiyin 730900, China.
Materials (Basel). 2018 Dec 4;11(12):2457. doi: 10.3390/ma11122457.
In this work, a mixing-calcination method was developed to facilely construct MXene/CuO nanocomposite. CuO and MXene were first dispersed in ethanol with sufficient mixing. After solvent evaporation, the dried mixture was calcinated under argon to produce a MXene/CuO nanocomposite. As characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and X-ray photoelectron spectra (XPS), CuO nanoparticles (60⁻100 nm) were uniformly distributed on the surface and edge of MXene nanosheets. Furthermore, as evaluated by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA), the high-temperature decomposition (HTD) temperature decrease of ammonium perchlorate (AP) upon addition of 1 wt% CuO (hybridized with 1 wt% MXene) was comparable with that of 2 wt% CuO alone, suggesting an enhanced catalytic activity of CuO on thermal decomposition of AP upon hybridization with MXene nanosheets. This strategy could be further applied to construct other MXene/transition metal oxide (MXene/TMO) composites with improved performance for various applications.
在本工作中，开发了一种混合煅烧方法以简便地构建MXene/CuO纳米复合材料。首先将CuO和MXene分散在乙醇中充分混合。溶剂蒸发后，将干燥的混合物在氩气气氛下煅烧以制备MXene/CuO纳米复合材料。通过X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和X射线光电子能谱（XPS）表征发现，CuO纳米颗粒（60⁻100 nm）均匀分布在MXene纳米片的表面和边缘。此外，通过差示扫描量热法（DSC）和热重分析（TGA）评估发现，添加1 wt% CuO（与1 wt% MXene杂化）时高氯酸铵（AP）的高温分解（HTD）温度降低与单独使用2 wt% CuO时相当，这表明CuO与MXene纳米片杂化后对AP热分解的催化活性增强。该策略可进一步应用于构建其他具有改进性能的MXene/过渡金属氧化物（MXene/TMO）复合材料，以用于各种应用。
