Hexagonal boron nitride hollow capsules with collapsed surfaces: Chemical vapor deposition with single-source precursor ammonium fluoroborate
Li Xiaopeng1, Zhang Jun1, Yu Chao1, Liu Xiaoxi1, Abbas Saleem1, Li Jie1, Xue Yanming2, †, 
, Tang Chengchun1, ‡,
, Tang Chengchun1, ‡, Characterization of the samples obtained at 1050 °C: (a) TEM image of the sample without washing by NaOH solution, (b) and (c) TEM images of the sample after washing; (d) and (e) HRTEM images of the sample in (c); (f) EELS spectrum of the washed sample; and (g) XRD pattern of the washed sample.
