2001 Monodispersed hard carbon spherules with uniform nanopores

In this work, sugar was selected as the precursor. The typical preparation process can be described simply in two steps, namely dewatering at low temperatures and carbonization at high temperatures. In the dewatering process,aqueous sugar solution of 1.5 mol/ l was filled in a stainless steel autoclave with a fill rate of 90%. After 5 h hydrothermal treatment at 190℃, the obtained black powder was further carbonized in a tube furnace in argon atmosphere. The argon flow rate, final temperature and heating rate of the furnace were 25 ml/min, 1000℃ and 1℃/min below 500℃, 5℃/min above 500℃, respectively.




转载本文请联系原作者获取授权，同时请注明本文来自胡滨科学网博客。
链接地址：https://m.sciencenet.cn/blog-5494-555948.html


下一篇：carbon and ZnO