期刊
ACTA MATERIALIA
卷 61, 期 4, 页码 1266-1273出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2012.11.002
关键词
Boron nitride nanosheets; Surface roughness; Dipole moments; Wetting; Self-cleaning
资金
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA) of the National Institute for Materials Science (NIMS), Tsukuba, Japan
- National University of Science and Technology MISTS, Moscow, Russian Federation [11.G34.31.0061]
- Grants-in-Aid for Scientific Research [23310082] Funding Source: KAKEN
Nonwetting (superhydrophobicity) is currently of great interest in advanced materials research for self-cleaning applications, although it has been a well-known phenomenon in nature (e.g. in lotus leaves) for a long time. Aiming at widening the potential applications of synthetic superhydrophobic films, we have used a noncatalytic chemical vapor deposition method to prepare superhydrophobic films consisting of boron nitride (BN) nanosheets, also known as white graphenes. A mixture of boron (B) and boron trioxide (B2O3) powder was used as a new precursor to grow such nano-rough films. The peculiar surface topography of the films induced a nonwetting behavior which was manifested by the picking up of external particles through water droplets rolling on their surface. The nonwetting tendency of the films is explained based on the interactions of the dipole moments of polar water molecules and BN nanosheets. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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