钼硫碘纳米线结构特性和化学改性的理论研究(英文)

A Theoretical Investigation of the Structural Properties of Chemically Modified Mo-S-I Nanowires

采用第一性原理密度泛函理论研究了纳米线结构的钼硫碘材料. 结构的理论模拟结果显示, 钼硫碘纳米线机械性能很高, 且其形变过程中显示出一种特殊的磁滞现象. 形成能、投影态密度以及电荷密度的计算结果显示, 使用电负性接近硫的碳元素可对钼硫碘纳米线化学改性同时不失去其良好的结构性能和电子性能. 该结果为化学改性钼硫碘纳米线材料应用于催化提供了依据. 这些钼硫碘纳米线材料将在纳米电子学、纳米机械学、催化、纳米限域等研究中有潜在应用.

Molybdenum-based materials are good catalysts.The structural properties of a chemically modified MoSI nanowire were investigated by density functional theory calculations.The structural simulation showed that MoSI nanowires have good flexibility and showed hysteresis in its structural evolution.The formation energy,projected density of states,and charge density showed that the chemical modification of MoSI nanowires is possible without losing useful structural and electronic properties useful for applications in catalysis.We suggest potential applications for MoSI nanowire materials in nanoelectronics,nanoelectromechanical,catalysis,and nano-confinement investigations.