Purification of boron nitride nanotubes through polymer wrapping.
An effective method was proposed to remove obstinate boron nitride phase impurities in boron nitride nanotubes (BNNTs). The method is based on strong interactions between BNNTs and a conjugated polymer wrapping them and significant weight and size difference between BNNTs and impurities. The as-grown samples and purified samples were compared through detailed characterization, using scanning electron microscopy, transmission electron microscopy, and Raman and Fourier transformed infrared spectroscopy. The results reveal that impurities are effectively removed and resultant BNNTs possess perfect crystallization.
Zhi
Chunyi
C
Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. zhi.chunyi@nims.go.jp
Bando
Yoshio
Y
Tang
Chengchun
C
Honda
Susumu
S
Sato
Kazuhiko
K
Kuwahara
Hiroaki
H
Golberg
Dmitri
D