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A facile approach was developed to prepare boron nitride nanosheets (BNNSs) by directly exfoliating hexagonal boron nitride (h-BN) intercalated with concentrated H2SO4, subsequently the rapid heating effect of H2SO4 mixing with water. The obtained BNNSs were characterized. It was demonstrated that bulk h-BN powder was successfully exfoliated by this new method. Transmission electron microscopy and...
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