High Temperature Vacuum Annealing and Hydrogenation Modification of Exfoliated Graphite Nanoplatelets

Table 3

Raman spectroscopy results for treated and untreated samples.

Sample	D-band peak position (1/cm)	G-band peak position (1/cm)	Intensity D/G (%)
GNP	1338.6±1.7	1568.2±1.2	41±3.5
GNP annealed then exposed to air	1337.4±3.8	1567.1±1.2	42±6.1
GNP-H	1338.1±3.6	1567.2±1.2	36±8.7