Biomass-Directed Synthesis of 20 g High-Quality Boron Nitride Nanosheets for Thermoconductive Polymeric Composites

详细信息    查看全文

• 作者：Xue-Bin Wang ; Qunhong Weng ; Xi Wang ; Xia Li ; Jun Zhang ; Fei Liu ; Xiang-Fen Jiang ; Hongxuan Guo ; Ningsheng Xu ; Dmitri Golberg ; Yoshio Bando
• 刊名：ACS Nano
• 出版年：2014
• 出版时间：September 23, 2014
• 年：2014
• 卷：8
• 期：9
• 页码：9081-9088
• 全文大小：614K
• ISSN：1936-086X

文摘

Electrically insulating boron nitride (BN) nanosheets possess thermal conductivity similar to and thermal and chemical stabilities superior to those of electrically conductive graphenes. Currently the production and application of BN nanosheets are rather limited due to the complexity of the BN binary compound growth, as opposed to massive graphene production. Here we have developed the original strategy 鈥渂iomass-directed on-site synthesis鈥?toward mass production of high-crystal-quality BN nanosheets. The strikingly effective, reliable, and high-throughput (dozens of grams) synthesis is directed by diverse biomass sources through the carbothermal reduction of gaseous boron oxide species. The produced BN nanosheets are single crystalline, laterally large, and atomically thin. Additionally, they assemble themselves into the same macroscopic shapes peculiar to original biomasses. The nanosheets are further utilized for making thermoconductive and electrically insulating epoxy/BN composites with a 14-fold increase in thermal conductivity, which are envisaged to be particularly valuable for future high-performance electronic packaging materials.

Keywords:

boron nitride; nanosheet; carbothermal reaction; synthesis; composite