Table 2.

Several functionalization approaches of 2D-BNNs.

Precursors	Chemicals	Method	Purification	Product	References
BN	ddH2O	Sonication	None	BN-OH	Lin et al., 2011
BN	Alkoxyl groups	Solution phase oxygen radical functionalization	Hydrolytic defunctionalization	BN-OH	Sainsbury et al., 2012
BN	Sodium hydroxide	Ball milling method	None	BN-OH	Lee et al., 2015
BN	N3C4	Reverse reaction (elemental substitution reaction)	None	BN-OH	Weng et al., 2014
BN	PEG	Exfoliation	None	BN-NH2	Lin et al., 2009
BN	Urea	Ball milling method	None	BN-NH2	Lei et al., 2015