标题：One-step Solid-state Reaction for the Synthesis of Hexagonal or Rhombohedral Boron Nitride Nanoplates in Autoclaves
作者：Tingting Wang;Zhicheng Ju;Changhui Sun
作者机构：[Wang, T] Department of Chemistry, Shandong University, Jinan 250100, China;[ Ju, Z] Department of Chemistry, Shandong University, Jinan 250100, China 更多
通讯作者地址：[Qian, YT]Shandong Univ, Dept Chem, Jinan 250100, Peoples R China.
摘要：Crystalline hexagonal boron nitride (h-BN) hexagonal nanoplates were synthesized by the reaction of B2O3, NH4F, and metallic Na at 700 °C. The edge sizes of the hexagonal nanoplates are 400 nm, and the average thickness is 100 nm. As the reaction temperature was set at 500 °C, rhombohedral boron nitride (r-BN) triangular nanoplates nearly 200 nm across and about 20 nm thick were obtained. TGA analysis results reveal that thermal stability of h-BN hexagonal nanoplates was better than that of r-BN triangular nanoplates in air.