期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 51, 页码 44732-44739出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b16198
关键词
boron nitride; foam; ultrasonic-assisted self-assembly; large sizes; absorption; thermal insulation
资金
- National Natural Science Foundation of China [51772075, 51572068, 51402086, 51372066]
- Natural Science Foundation of Hebei Province [E2016202122]
- Hundred Talents Program of Hebei Province [E2014100011]
As a kind of macroscopic boron nitride (BN) architectures, ultralight BN cellular materials with high porosity and great resilience would have a broad range of applications in energy and environment areas. However, creating such BN cellular materials in large sizes has still been proven challenging. Here, we report on the unique self-assembly of one-dimensional porous BN microfibers into an integral three-dimensional BN foam with open-cell cellular architectures. An ultrasonic-assisted self-assembly, freeze-drying, and high-temperature pyrolysis process has been developed for the preparation of cellular BN foam with a large size and desired shape. The developed BN foam has low density, high porosity (similar to 99.3%), great resilience, and excellent hydrophobic-lipophilic nature. The foam also exhibits excellent absorption capacities for a wide range of organic solvents and oils (wt % of similar to 5130-7820%), as well as a high recovery efficiency (similar to 94%). Moreover, the unique hierarchical porous structure enables the foam to demonstrate a very low thermal conductivity (similar to 0.035 W/K/m). The excellent thermal insulation performance, superior mechanical property, and superb chemical and thermal stability enable the developed BN foam as an integrating multifunctional material in a broad range of high-end applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据