Biomass-directed synthesis of 20 g high-quality boron nitride nanosheets for thermoconductive polymeric composites.
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 "biomass-directed on-site synthesis" 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.
['Wang|Xue-Bin|XB|', 'Weng|Qunhong|Q|', 'Wang|Xi|X|', 'Li|Xia|X|', 'Zhang|Jun|J|', 'Liu|Fei|F|', 'Jiang|Xiang-Fen|XF|', 'Guo|Hongxuan|H|', 'Xu|Ningsheng|N|', 'Golberg|Dmitri|D|', 'Bando|Yoshio|Y|']
D018533:Biomass D001896:Boron Compounds D017097:Electric Impedance D004852:Epoxy Compounds D049329:Nanostructures D036103:Nanotechnology D010084:Oxidation-Reduction D011108:Polymers D019064:Product Packaging D013814:Thermal Conductivity
synthesis boron nitride nanosheet composite carbothermal reaction