美国莱斯大学Tour, James M.团队报道了克级固体材料的闪中闪合成。相关研究成果发表在2024年8月8日出版的《自然—化学》。

可持续制造优先考虑能源效率、最低用水量、可扩展性和生产多种材料的能力，这对于推进无机材料生产同时保持环保意识至关重要。然而，目前的制造实践尚未完全满足这些要求。

该文中，研究人员描述了一种闪中闪焦耳加热（FWF）技术，这是一种非平衡、超快的热传导方法，用于制备十种过渡金属二硫化物、三种第十四族二硫化物和九种非过渡金属二卤化物材料，每种材料在环境条件下在5秒内制备。与其他合成方法相比，FWF在易于实现图形可扩展性和可持续制造标准方面具有巨大优势。

此外，FWF能够生产相选择性和单晶块状粉末，这是任何其他合成方法都很少观察到的现象。此外，FWF MoSe₂在摩擦学方面优于商用MoSe₂，展示了FWF材料的质量。原子替代和掺杂的能力进一步突显了FWF作为通用体无机材料合成协议的多功能性。

附：英文原文

Title: Flash-within-flash synthesis of gram-scale solid-state materials

Author: Choi, Chi Hun William, Shin, Jaeho, Eddy, Lucas, Granja, Victoria, Wyss, Kevin M., Damasceno, Brbara, Guo, Hua, Gao, Guanhui, Zhao, Yufeng, Higgs, C. Fred, Han, Yimo, Tour, James M.

Issue&Volume: 2024-08-08

Abstract: Sustainable manufacturing that prioritizes energy efficiency, minimal water use, scalability and the ability to generate diverse materials is essential to advance inorganic materials production while maintaining environmental consciousness. However, current manufacturing practices are not yet equipped to fully meet these requirements. Here we describe a flash-within-flash Joule heating (FWF) technique—a non-equilibrium, ultrafast heat conduction method—to prepare ten transition metal dichalcogenides, three group XIV dichalcogenides and nine non-transition metal dichalcogenide materials, each in under 5s while in ambient conditions. FWF achieves enormous advantages in facile gram scalability and in sustainable manufacturing criteria when compared with other synthesis methods. Also, FWF allows the production of phase-selective and single-crystalline bulk powders, a phenomenon rarely observed by any other synthesis method. Furthermore, FWF MoSe2 outperformed commercially available MoSe2 in tribology, showcasing the quality of FWF materials. The capability for atom substitution and doping further highlights the versatility of FWF as a general bulk inorganic materials synthesis protocol.

DOI: 10.1038/s41557-024-01598-7

Source: https://www.nature.com/articles/s41557-024-01598-7