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

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• 作者：Liaoyuan Xia ; Mingqiu Zhang ; Minzhi Rong ; Kunkun Guo ; Yunchu Hu ; Yiqiang Wu ; Tibor Czigany
• 关键词：A. Hybrid composites ; A. Nano composites ; A. Wormhole-like mesostructure ; E. Sol&ndash ; gel methods
• 刊名：Composites Science and Technology
• 出版年：2012
• 出版时间：17 September, 2012
• 年：2012
• 卷：72
• 期：14
• 页码：1651-1655
• 全文大小：809 K

文摘

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 N₂ 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 (¡«40 nm) tungsten carbide particles, and high surface areas (up to 314.9 cm²/g). It is proposed that a general assemble procedures are responsible for the wormhole-like mesoporous WC/C composites.