Aqueous dispersion of hexagonal boron nitride via plasma processing in hydroquinone solution

Plasma processing in solution with hydroquinone additive was performed for aqueous dispersion of hexagonal boron nitride, and the effect of hydroquinone additive was determined by analyzing the zeta potential distribution. The hydroquinone additive enhanced plasma modification in solution to produce well-dispersed h-BN particles separated by centrifugation. The mean zeta potential improved up to -50 mV at neutrality and maintained in a pH range 6–9. Infrared absorption spectra suggested that the dispersed h-BN particles were modified with hydroxyl functional groups by plasmas in solution.