. 2022 Nov 12;8(11):e11586. doi: 10.1016/j.heliyon.2022.e11586

Table 4.

Elements determined by XPS spectra for CC2h.

Element	Binding Energy (eV)	Attribution	Reference
C	284.6	C=C	[47]
	286.3	C–O
	287.8	C=O
	288.9	O–C=O
O	531.5	C=O	[28]
O	533	C–O
Ca	347.5	Ca2p_3/2	[48]
Ca	350.8	Ca2p_1/2
P	133.6	2p_3/2	[18]