石墨相C3N4压致结构相变研究

李雪飞; 马艳梅; 沈龙海; 张剑; 类伟巍; 刘伟; 邹广田

doi:10.11858/gywlxb.2010.01.012

石墨相C3N4压致结构相变研究

doi: 10.11858/gywlxb.2010.01.012

1.
吉林师范大学教育技术与传播学院，吉林四平 136000；
2.
吉林大学超硬材料国家重点实验室，吉林长春 130012

详细信息

通讯作者:
张剑

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出版历程
- 收稿日期: 2008-12-12
- 修回日期: 2009-03-30
- 发布日期: 2010-02-15

Study on the Pressure-Induced Phase Transition of g-C3N4

1.
School of Education Technology and Communications, Jilin Normal University, Siping 136000, China;
2.
National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

More Information

Corresponding author: ZHANG Jian

摘要

摘要: 将有机物三聚氰胺（C3N6H6）高温热解，得到了石墨相C3N4（g-C3N4）。利用同步辐射X射线衍射和金刚石对顶砧（DAC）高压技术，在室温下对g-C3N4进行了结构变化研究。实验结果表明，在16.57 GPa压力范围内，g-C3N4发生了压致结构相变，在6.6 GPa压力下，晶体结构由原来的石墨相转变为三斜相。使用Birch-Murnagha等温状态方程拟合出了样品的等温状态方程。
- g-C3N4 /
- 结构相变 /
- 同步辐射 /
- 高压
Abstract: Graphitic carbon nitride (g-C3N4) is prepared by pyrolysis of melamine. At room temperature, the structure change of the g-C3N4 is investigdted by in situ high pressure angle-dispersive X-ray diffraction with a synchrotron radiation source, which is in a diamond-anvil cell. The results show that structural phase transition occurred in g-C3N4 within 16.57 GPa pressure range. The crystal structure changes from graphitic to triclinic structure at 6.6 GPa. The isothermal equation of the state of C3N4 is fitted using the Birch-Murnagha equation of state.
- g-C3N4 /
- structural phase transition /
- synchrotron radiation /
- high pressure

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参考文献(10)

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