Mechanically activated catalyst mixing for high-yield ...
The ball milling was conducted on a custom-built vertical milling machine and lasted for 150 h at a speed of 110 rpm at room temperature. The milled powder was then heated up to 1,100°C in N 2 + 15% H 2 or 1,300°C in NH 3 for 3 to 6 h to produce BNNTs.
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