Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue

Table 1 Standard binding energy values

Samples^a	Fe 2p_3/2	O 1s	Si 2p	N 1s	Ti 2p _3/2
Naked Fe₃O₄ nanoparticles	710.9	531.5
APTES-coated Fe₃O₄ nanoparticles	710.5	531.5	102.5	399.5
Hybrid nanoparticles (FT-3)	710.0	530.0	101.4	400.7	458.3
Standard value	710.5^b	531.4^c, 529.9^d	103.3^e	399.8^f	458.8^g

Standard binding energy values for Fe 2p, Si 2p, N 1s, O 1s, and Ti 2p and those resolved in the naked, amino-functionalized, and titania coating ultrafine Fe₃O₄ nanoparticles. ^aUnit for binding energy: eV; ^bFe in Fe₃O₄; ^cO in Fe₃O₄; ^dO in TiO₂; ^eSi in SiO₂; ^fN in N-C group; ^g Ti in TiO₂, Δ = 5.54 eV