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

Wu et al. Nanoscale Research Letters 2011 6:533   doi:10.1186/1556-276X-6-533