Synthesis of Multiwall Boron Nitride (BN) Nanotubes by a PVD Method Based on Vapor-Liquid-Solid Growth

Hao Guo; Yonggang Xu; Hetuo Chen; Zhengjuan Wang; Xiaojian Mao; Guohong Zhou; Jian Zhang; Shiwei Wang

doi:10.3390/ma13040915

Synthesis of Multiwall Boron Nitride (BN) Nanotubes by a PVD Method Based on Vapor-Liquid-Solid Growth

Materials (Basel). 2020 Feb 19;13(4):915. doi: 10.3390/ma13040915.

Authors

Hao Guo^{1

2}, Yonggang Xu^{1

2}, Hetuo Chen^{1

3}, Zhengjuan Wang^{1

3}, Xiaojian Mao^{1

3}, Guohong Zhou^{1

3}, Jian Zhang^{1

3}, Shiwei Wang^{1

3}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
³ CAS Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China.

Abstract

Multiwall boron nitride (BN) nanotubes were synthesized by a novel physical vapor deposition (PVD) method, in which the BN nanotubes grow on a compact substrate composed of AlN, γ-Al₂O₃, Y₂O₃, and carbon powders. The obtained BN nanotubes assemble in an orderly manner with a typical length of over one millimeter and a diameter of one-hundred nanometers. The hollow multiwall tubes have a spherical tip, which is presumed to be a liquid drop at the synthesis temperature, indicating the vapor-liquid-solid (VLS) growth mechanism.

Keywords: Boron nitride nanotubes; physical vapor deposition; vapor–liquid–solid growth.

Abstract

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