Uniform and spherical ZrC nanoparticles derived from metal organic frameworks by one-step thermal decomposition
Uniform and spherical ZrC nanoparticles derived from metal organic frameworks by one-step thermal decomposition
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DOI：
10.1016/j.ceramint.2024.01.415
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发表时间：
2024-02
影响因子：
5.2
通讯作者：
Bichao Geng;Jian Yang;Dapeng Chen;J. Jin;Yang Wang;Lin Zhao;Jian Gu
中科院分区：
文献类型：
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作者：
Bichao Geng;Jian Yang;Dapeng Chen;J. Jin;Yang Wang;Lin Zhao;Jian Gu
采用新型无定形金属锆-有机骨架（aZMOFs），在1500℃下一步热分解制备了ZrC纳米颗粒。考察了不同金属/连接剂比例和溶剂类型对合成的ZrC纳米粒子的影响。从相纯度、粒度、TG-DTA分析和形貌等方面对所合成的ZrC纳米颗粒进行了性能分析，结果表明所合成的ZrC纳米颗粒纯度高，呈球形，粒径分布均匀（100±21 nm）。值得注意的是，DMF溶剂的部分蒸馏水取代放大了锆与连接剂之间的配位，从而通过碳热还原提高了多余碳的消耗。本研究为制备超高温陶瓷纳米颗粒作为纤维增强超高温陶瓷复合材料的基体提供了一种具有潜在成本效益的合成方法。
The ZrC nanoparticles were successfully fabricated using a novel amorphous zirconium metal-organic frameworks (aZMOFs) by one-step thermal decomposition at 1500 °C. The effects of different metal/linker ratios and solvent types on the synthesized ZrC nanoparticles were investigated. The property analysis of the particle in terms of phase purity, particle size, TG-DTA analysis and morphology indicated the as-synthesized ZrC nanoparticles with high purity, spherical shape and uniform particle size distribution (100 ± 21 nm). Notably, the partial distilled water substitution of DMF solvent amplifies the coordination between zirconium and linker, which leads to improving the consumption of excess carbon via carbothermal reduction. The current research provides a potential cost-effective synthesis method of preparing ultra-high temperature ceramic (UHTC) nanoparticles as matrices for fiber reinforced UHTC composites.