Fig. 3

a–d Form, (e–h) morphology and i–l structure images of reaction products at 2, 4, 8 and 12 bar when the chamber is full of N2. BNNTs were dominant product at 8 and 12 bar and h-BN was dominant product at 2 and 4 bar
a–d Form, (e–h) morphology and i–l structure images of reaction products at 2, 4, 8 and 12 bar when the chamber is full of N2. BNNTs were dominant product at 8 and 12 bar and h-BN was dominant product at 2 and 4 bar