2. Experimental
2.1. Preparation of GO, RGO, BN, and BN/RGO
GO was prepared by modified Hummers method [11].
200 mg GO was dispersed in deionized water (200 mL) by ultrasonic
vibration for 2 h. Then, 3 g ammonia and 3 mL hydrazine
hydrate (80%) were added. The reaction was heated to 100 °C and
stirred for 2 h. Finally, the product was washed and dried to obtain
RGO nanosheet.
200 mg bulk BN was dispersed in isopropyl alcohol (200 mL) by
ultrasonic vibration for 2 h. Finally, the product was washed and
dried to obtain BN nanoparticle.
20 mg bulk BN and 180 mg GO were dispersed in the mixed
solvents of isopropyl alcohol (100 mL) and deionized water
(100 mL) by ultrasonic vibration for 2 h. Then, 3 g ammonia and
3 mL hydrazine hydrate (80%) were added. The reaction was heated
to 100 °C and stirred for 2 h. Finally, the product was washed
and dried to obtain BN/RGO nanocomposites