Boron nitride hollow nanospheres: Synthesis, formation mechanism and dielectric property

B. Zhong, X. H. Tang, X. X. Huang*, L. Xia, X. D. Zhang, C. J. Wang, G. W. Wen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Boron nitride (BN) hollow nanospheres have been successfully fabricated by pyrolyzing vapors decomposed from ammonia borane (NH3BH3) at 1300 °C. The final products have been extensively characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The BN hollow nanospheres were ranging from 100 to 300 nm in diameter and around 30-100 nm in thickness. The internal structure of the products was found dependent on the reaction temperatures. A possible formation mechanism of the BN hollow nanospheres was proposed on the basis of the experimental observations. Dielectric measurements in the X-band microwave frequencies (8-12 GHz) showed that the dielectric loss of the paraffin filled by the BN hollow nanospheres was lower than that filled by regular BN powders, which indicated that the BN hollow nanospheres could be potentially used as low-density fillers for microwave radomes.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalMaterials Research Bulletin
Volume64
DOIs
Publication statusPublished - Apr 2015
Externally publishedYes

Keywords

  • A. Inorganic compounds
  • A. Nanostructures
  • B. Chemical synthesis
  • B. Vapor deposition
  • D. Dielectric properties

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