Table 3.

C1s and O1s XPS Spectra of GO and AArGO25 thin films.

C1s XPS Spectra
Sample	C–C/C=C (%)	C–O (%)	C–O–C (%)	C=O (%)	COOH (%)	C/O Ratio	FWHM of C1s
GO	27.92	34.33	5.75	0.53	-	2.17	1.52
AArGO25	33.35	31.58	4.99	0.44	0.56	2.44	1.33
O1s XPS Spectra
Sample	C–O–C (%)		C=O (%)		COOH (%)	FWHM of O1s
GO	29.23		0.44		1.8	1.29
AArGO25	26.91		0.76		1.41	1.2