Photochemical Synthesis of Ultrafine Cubic Boron Nitride Nanoparticles under Ambient Conditions.
Cubic boron nitride (c-BN) is a super-hard material whose hardness increases dramatically with decreasing size. However, c-BN nanoparticles (NPs) with sizes less than 10 nm have never been obtained. Herein we report a simple strategy towards the synthesis of ultrafine c-BN NPs with an average size of 3.5 nm. The method, under ambient conditions, exploits a laser-induced photochemical effect and employs dioxane solution of ammonia borane (AB) as a liquid target. Meanwhile, total dehydrogenation of AB is realized by laser irradiation. Therefore, this approach shows great potential for the preparation of super-hard NPs as well as controllable dehydrogenation.
Key Laboratory of Micro- and Nano-scale Boron Nitride Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin (China).|Institute of New-Energy Materials, Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072 (China).
Hui
H
Liu
Key Laboratory of Micro- and Nano-scale Boron Nitride Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin (China).
Peng
P
Jin
Key Laboratory of Micro- and Nano-scale Boron Nitride Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin (China).
Yan-Ming
YM
Xue
Institute of New-Energy Materials, Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072 (China).
Cunku
C
Dong
Institute of New-Energy Materials, Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072 (China).
Xiang
X
Li
Key Laboratory of Micro- and Nano-scale Boron Nitride Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin (China).
Cheng-Chun
CC
Tang
Institute of New-Energy Materials, Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072 (China). xwdu@tju.edu.cn.
Xi-Wen
XW
Du
ammonia borane; cubic boron nitride; dehydrogenation; laser irradiation; nanoparticles