Table 3.

Characteristic XPS peaks for Ag-MNPs at different concentrations of the Ag ion.

x	Bond	Binding energy (eV)	Atomic (%)	Assignment	Ref
0.0	Fe2p	710.6	33.99	Fe 2p3/2	[66,67]
		713.87	15.58	Fe 2p3/2	[68]
		718.62	13.53	Fe3+	[69]
		723.62	20.33	Fe 2p1/2	[66,67]
		726.99	10.31	Fe 2p1/2	[68]
		732.09	6.25
	O1s	529.72	84.28	Fe–O	[70,71]
		531.34	15.72	Fe–OH	[66]
0.2	Fe2p	710.76	24.62	Fe 2p3/2	[66,67]
		713.69	19.03	Fe 2p3/2	[68]
		717.31	10.76	Fe3+	[69]
		720.57	10.13	Fe3+	[69]
		724.43	17.98	Fe 2p1/2	[66,67]
		727.86	11.04	Fe 2p1/2	[68]
		732.46	6.44
	O1s	529.54	40.71	Fe–O	[70,71]
		531.14	39.98	Fe–OH	[70]
		532.9	7.01	FeO–OH	[70]
		533.93	12.3
	Ag3d	367.73	61.41	Ag 3d5/2	[72]
		373.58	38.59	Ag 3d3/2	[72]