材料科学
相(物质)
熔盐
管式炉
最大相位
化学工程
大气(单位)
表征(材料科学)
Crystal(编程语言)
纳米技术
陶瓷
冶金
有机化学
热力学
计算机科学
工程类
化学
物理
程序设计语言
作者
Anmin Liu,Qiyue Yang,Xuefeng Ren,Fanning Meng,Liguo Gao,Mengfan Gao,Yanan Yang,Tingli Ma,Gang Wu
标识
DOI:10.1016/j.ceramint.2019.11.008
摘要
Ti3C2, produced by selective etching of Al from MAX-phase Ti3AlC2, is the most widely studied two-dimensional MXene material in many research fields. However, the synthesis of highly pure Ti3AlC2 typically requires high temperatures, resulting in high-energy demands and high production costs. To reduce the synthesis temperature, we present a new NaCl-assisted approach for synthesizing Ti3AlC2. Ti3AlC2 was synthesized from a Ti2AlC–TiC mixture at 1150 °C under an argon atmosphere in a tube furnace. The successful synthesis of highly pure Ti3AlC2 with an ideal crystal structure and the subsequent preparation of Ti3C2 were confirmed by material characterization and simulation results. This molten-salt-assisted method is more efficient in terms of energy and cost because it lowers the synthesis temperature of MAX-phase Ti3AlC2 by 200 °C. When assisted by appropriate kind or quantity of molten-salt, the synthesis temperature and synthesis time may be further reduced. These findings may provide a new approach for lower-temperature synthesis of other MAX-phase materials and greatly widen the applications of MAX and MXene materials.
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