CuMOF@MXene能量复合材料的非绑定相互作用驱动形态演变:热稳定性和燃烧性能的协同优化
Ke-Juan Meng1, Xinwen Ma1, Kunyu Xiong1
1Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|July 14, 2025
概括
合成了新的金属有机框架 (MOF) 和MXene复合材料,由于界面相互作用,显示了增强的热稳定性和燃烧性能. 这些混合材料为先进的应用提供了可调节的特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学 化学 化学
背景情况:
- 混合材料,特别是金属有机框架 (MOF) @MXene复合材料,正因其调节性特性而受到关注.
- 了解界面相互作用是设计先进复合材料的关键.
研究的目的:
- 合成基于铜的新能源MOF (CuMOF) 和MXene复合材料 (CuMOF@MXx).
- 研究介面"Ti─O···Cu"非结合相互作用对这些复合材料的形态,热性能和燃烧性能所起的作用.
- 阐明这些界面相互作用背后的机制.
主要方法:
- 简单的一步热水合成CuMOF@MXx复合材料.
- 实验性表征包括同时进行的热重力测量-微分扫描热量测量 (TG-DSC).
- 非同热运动分析和理论计算以验证界面相互作用.
主要成果:
- 成功合成了 CuMOF@MXx 复合材料,其形态多样化,从花样结构转变为球形结构,MXene 含量增加.
- 验证影响复合材料性质的"Ti─O····Cu"非结合相互作用.
- 与纯CuMOF (314.9 °C,202.56 kJ mol-1) 相比,CuMOF@MX4具有更好的热稳定性 (较高的失控反应温度:354.2 °C) 和激活能量 (211.58 kJ mol-1).
- CuMOF@MXx复合材料显示出更强烈和更快的燃烧.
结论:
- CuMOF和Ti3C2Tx MXene之间的界面非结合相互作用在调节复合材料的结构和特性方面发挥着至关重要的作用.
- 合成的CuMOF@MXx复合材料显示了增强的热稳定性和燃烧性能.
- 这项研究提供了对MOF@MXene混合材料界面相互作用机制的见解.
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