An easy soft-template route to synthesis of wormhole-like mesoporous tungsten carbide/carbon composites

作者：Xia, Liaoyuan^*; Zhang, Mingqiu; Rong, Minzhi; Guo, Kunkun; Hu, Yunchu; Wu, Yiqiang; Czigany, Tibor

来源：Composites Science and Technology, 2012, 72(14): 1651-1655.

DOI：10.1016/j.compscitech.2012.07.007

• Hybrid composites
• Nano composites
• Wormhole-like mesostructure
• Sol-gel methods

Wormhole-like mesoporous tungsten carbide/carbon (WC/C) composites can be prepared by an easy method that combines emulsion processing with triblock copolymer self-assembly strategy, followed by a high-temperature carbothermal reduction. X-ray diffraction, transmission electron microscopy, X-ray spectroscopy, thermogravimetric analysis and N-2 sorption techniques were employed to characterize the mesoporous WC/C composites. The results show that the resultant materials have a wormhole-like mesostructure containing nanoscale (similar to 40 nm) tungsten carbide particles, and high surface areas (up to 314.9 cm(2)/g). It is proposed that a general assemble procedures are responsible for the wormhole-like mesoporous WC/C composites.

• 出版日期2012-9-17
• 单位中南林业科技大学; 湖南大学; 中山大学