Zhang Jian, Lin Lin, Cui Hang
College of Science, Beihua University, Jilin 132013, China.
Jilin Provincial Key Laboratory of Wooden Materials Science and Engineering, Beihua University, Jilin 132013, China.
Nanomaterials (Basel). 2020 Sep 9;10(9):1780. doi: 10.3390/nano10091780.
Noble metal nitrides (NMNs) have important theoretical significance and potential application prospects due to their high bulk modulus and remarkable electrical properties. However, NMNs can only be synthesized under extreme conditions of ultrahigh pressure and temperature, and nanoscaled NMNs have not been reported. In this work, as typical NMNs, PtN nanoparticles were synthesized at 5 GPa and 750 K by the method of plasma-assisted laser-heating diamond anvil cell. The significantly reduced synthesis condition benefited from the ingenious design of the precursor and the remarkable chemical activity of the ultrafine Pt nanoparticles. This study, combining nanomaterials with high-pressure and -temperature (HPHT) techniques, provides a novel process for the preparation of NMN nanomaterials, and a new direction for the synthesis of superhard materials.
贵金属氮化物（NMNs）因其高体模量和卓越的电学性能而具有重要的理论意义和潜在的应用前景。然而，NMNs只能在超高压和高温的极端条件下合成，且尚未有纳米级NMNs的报道。在本工作中，作为典型的NMNs，通过等离子体辅助激光加热金刚石对顶砧池方法在5 GPa和750 K下合成了PtN纳米颗粒。合成条件的显著降低得益于前驱体的巧妙设计以及超细Pt纳米颗粒的显著化学活性。本研究将纳米材料与高温高压（HPHT）技术相结合，为NMN纳米材料的制备提供了一种新方法，也为超硬材料的合成开辟了新方向。
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