Stable Aqueous Suspension and Self-Assembly of Graphite Nanoplatelets Coated with Various Polyelectrolytes

Table 2

Atomic concentration of the surface of xGnP before and after PE modification.

	C1s	O1s	S2p	N1s	Zr3d
xGnP	92.38	6.38			0.25
SPS-xGnP	94.31	4.51	0.76		0.22
SPS-xGnP redispersed*	91.71	6.44	0.79		0.20
PEI-xGnP	91.84	4.73		3.19	0.25
PEI-xGnP redispersed*	90.69	5.79		3.24	0.28

*The xGnP was redispersed in DI water with mild sonication for 10–15 minutes, and then filtrated and dried before XPS measurement.