High Pressure Chemistry Group (HPChem) Research

The synthesis of materials with low-Z under extreme conditions

◆ Controllable synthesis of multi-dimensional carbon materials by physical means such as high pressure

We use high pressure combined with high temperature, light and other conditions to synthesize multi-dimensional carbon-and nitrogen-based materials from small molecules such as diamond nanowires, graphane, nanographite ribbons, etc.. Furthermore, we will also try to study the control laws of related reactions, and establish the systematical method of synthezing carbon- and nitrogen-based materials under extreme conditions. This will provides a high-pressure solution for the atomic-level controllable synthesis of material structures.

◆Synthesis of the functional material under high pressure

High pressure is an effective means to synthesize high-density modified polymer materials. We will try to synthesize functional materials with redox activity, semiconductor properties, and high energy density under high pressure, and explore their applications in semiconductors, lithium batteries, catalysis, and energetic materials etc.

◆ Reaction mechanism

The reaction path of the polymerization under high pressure can be completely different with those happened under ambient pressure. We investigate the reaction mechanism by focus onthe crystal structures and the molecular structure before and after the reaction under high pressure, using crystallographic, optical and X-ray spectroscopic methods.

Abiotic gas formation and the carbon-hydrogen cycle process in the deep earth

The inside of the earth is a high temperature and high pressure environment. Subducting plates provide a rich source of carbon and hydrogen for the deep earth. Studying the interaction of these substances in the high temperature and high pressure environment of the earth and the physical and chemical processes will provide us with an important reference for understanding the carbon-hydrogen cycle inside the earth.

研究方向

极端条件下多维碳基、氮基材料的合成

◆利用高压等物理手段可控合成多维碳材料

我们利用高压并结合变温、光照等条件从小分子出发合成诸如金刚石纳米线、石墨烷、纳米石墨带等多维碳基、氮基材料并试图研究相关反应的控制规律，建立极端条件下碳基、氮基材料合成的系统方法，为材料结构的原子级可控合成提供高压方案。

◆功能材料的探索合成

高压是合成高密度修饰聚合物材料的有效手段。我们将尝试高压下具有氧化还原活性、半导体特性以及具有高能量密度等的功能材料的合成，并探索它们在半导体、锂电池、催化以及含能材料方面的应用。

◆反应机理

高压下，处于极端受限条件下的分子的化学反应规律完全不同于常压。我们利用原位的衍射、光谱学及化学微分析的方法并结合理论计算，研究总结在高压条件下特有的化学反应规律及过程。

非生物成气与地球深部的碳-氢循环过程

◆地球深部非生物气的形成与转化

地球内部是高温高压环境。俯冲板块为地球深部提供了丰富的碳源和氢源，研究这些物质在地球内部高温高压环境下的相互作用以及物理化学过程将为我们理解地球内部的碳-氢循环提供重要的参考。