六方氮化硼石墨烯样少层的合成。

Synthesis of hexagonal boron nitride graphene-like few layers.

机构信息

Université de Lyon, F-69000, Lyon, France.

出版信息

Nanoscale. 2014 Jul 21;6(14):7838-41. doi: 10.1039/c4nr01017e.

Abstract

Self-standing highly crystallized hexagonal boron nitride (h-BN) mono-, bi- and few-layers have been obtained for the first time via the Polymer Derived Ceramics (PDCs) route by adding lithium nitride (Li₃N) micropowders to liquid-state polyborazylene (PBN). Incorporation of Li₃N as a crystallization promoter allows the onset of crystallization of h-BN at a lower temperature (1200 °C) than under classical conditions (1800 °C). The hexagonal structure was confirmed by both electron and X-ray diffraction.

摘要

首次通过聚合物衍生陶瓷（PDC）路线，在液态聚硼氮烷（PBN）中加入氮化锂（Li₃N）微粉，得到了自支撑的高结晶六方氮化硼（h-BN）单层、双层和少层。Li₃N 的加入作为一种促进剂，使得 h-BN 的结晶起始温度比传统条件（1800°C）下更低（1200°C）。通过电子和 X 射线衍射证实了六方结构。