2.4. Hydrothermal preparation of HB-GNS
The prepared T-GNS (0.1 g) was doped with boron by mixing
1.5 g of boric acid (H3BO3) and 50 mL of ethanol. The solution was
sonicated for 10 min for homogenization. The solution was then
transferred into a sealed Teflon-lined 300 mL autoclave and kept at
150 C for 11 h. The boron-doped graphene nanosheets (HB-GNS)
obtained as fine black powder. The powder was collected and